U-518 2nd War Patrol

Translation by Christine Hillmann with help from Jerry Mason and Ken Dunn

Departed
Date
Arrived
Date
Days at Sea
Lorient
11 Jan 1943
Lorient
27 April 1943
107

 

Click the icon to download a KMZ file displaying the U-boat track, significant events and locations for this patrol.  You must have Google Earth loaded on your computer to view this file.  Download Google Earth here

Ships Attacked
Date
KTB Time
Position
Ship
Tons
Nationality
Convoy
18 Feb 43
08.05 - 08.35
12°51'S, 37°51'W
BRASILOIDE
6,075
Brazilian
 
1 Mar 43
06.52 - 12.15
12°27'S, 37°03'W
FITZ-JOHN PORTER
7,176
American
BT-6
20 Mar 43
04.27 - 05.10
13°33'S, 37°21'W
MARISO
7,659
Netherlander
 
25 Mar 43
07.07
11°45'S, 35°45'W
INDUSTRIA
1,688
Swedish
 
     
 Total = 22,598
   
Note:  The positions in the table above and in the Google Earth patrol summary are derived from the KTB and in many cases do not match those set forth in authoritative references such as Jürgen Rohwer, Axis Submarine Successes of World War Two or the Uboat.net website.  The goal here is to present the picture relative to the U-boat and not the absolute position that the ship was attacked or sank.


 
 
           
           
           
           
           
              
           
                K  r  i  e  g  s  t  a  g  e  b  u  c  h  
                _________________________  
                     of Unterseebootes "U-518"  
           
                             2nd War Patrol  
           
       
 
 
Beginning:  16.12.42
Ending:       27.4.43
 
 
 
                                 Time:               D.G.Z.  
                                 All naval squares  
                                 War Patrol in accordance with Operations Order 53  
           
           
           
                                 Kommandant:  Kapitänleutnant Wißmann.  
           
           
           
     
                         Distribution: 2 x O.K.M.
  1 x B.d.U.-Op.-
  1 x Kmdr.Adm.Uboote.
  1 x F.d.U.-West.-
  1 x F.d.U.-Ausbl.-
  1 x 2.Uflottille.
  1 x 27.Uflottille.
 
           
           
           
           
        © U-boat Archive 2014  - all rights reserved  
Click the flag to view the above page from the original German KTB
 
- 1 -
 
           
           
           
           
    16.12.42
Lorient
Cleared the boat.  
    17.12.42
"
Boat shifted and moved on the slipway to Shelter B 3.  Overhaul work.  
    29.12.42
"
Boat launched and shifted to berth K 14 for further overhaul work.  
    03.01.43
"
Dummy torpedoes fired.  Boat shifted to berth B 5.  
    04.01.43 - 06.01.43
"
Pierside testing, torpedo loading, fuel loading, degaussing, sea trial, trim test.  
    07.01.43
"
On the slipway for repair of leaks.  
    08.01.43 - 09.01.43
"
Provisions loading, final adjustment and overhaul.  
    10.01.43
"
Final trim test.  
   
                                               
    11.01.43
   
    16.30
Lorient
Cast off for 2nd war patrol, Operations Order "Atlantic" No. 53 in effect.  
      S 4, Sea 3, overcast, rain, Vis. medium  
    17.00   Taken under escort by Speerbrecher.   
    19.15   Point Laterne:  Convoy ended.  Continued outbound transit alone in accordance with Outbound Orders via Point 352, 346a, Lade, Kern.  
    20.00 Bay of Biscay  BF 6173    
      SSW 7, Sea 5, overcast, rain, Vis. bad, dark night, medium-high SW-swell, faint marine phosphorescence    
    20.35   Point 352.  
    23.00   Point 346a.  
                                                       
    12.01.43      
    00.00 Bay of Biscay  BF 5267    
      SSW 7-8, Sea 7, overcast, rain, Vis. medium, medium bright night, medium-high SW-swell,, faint marine phosphorescence    
    02.15   Point Lade.  
    04.00 Bay of Biscay  BF 5523    
      SSW 8, Sea 7, overcast, Vis. medium, dark night, high SW-swell, no marine phosphorescence    
           
Sun and Moon Data 11.01.43
Sun and Moon Data 12.01.43
 
- 2 -
 
           
           
           
    continued      
    12.01.43      
    08.00 Bay of Biscay  BF 5524    
      SW 7-8, Sea 7, overcast, Vis. medium, high SW-swell, no marine phosphorescence    
    08.33   Dived.  
        Proceeded submerged at depth A -50 meters.  
    12.00 Bay of Biscay  BF 5541 Point Kern.  
        Went to depth A -40 meters, began transit through the Bay of Biscay on SW-course.  
        Day's run:  Surfaced 105 nm, Submerged 11 nm.  
    16.00 Bay of Biscay  BF 5466    
    19.15   Surfaced.  
    20.00 Bay of Biscay  BF 5491    
      WbyN 6, Sea 5, 3/10, Vis. changing, occasional hail and rain showers, faint marine phosphorescence    
                                                       
    13.01.43      
    00.00 Bay of Biscay  BF 5721    
      W 4, Sea 3, 6/10, rain, Vis. changing, moonlit night, no marine phosphorescence    
    04.00 Bay of Biscay  BF 5741    
      WSW 4, Sea 4, 4/10, Vis. medium. medium-bright night, faint marine phosphorescence    
    08.00 Bay of Biscay  BF 4991    
      SW 4, Sea 4, 5/10, Vis. medium, medium-bright night    
    08.39   "Crash dive" for training.  Deep dive test to depth A +40 meters.  No incidents.  
        Proceeded submerged.  
    12.00 Bay of Biscay  BF 4985 Day's run:  Surfaced 97 nm, Submerged 29 nm.  
    16.00          "             BF 4976    
           
    19.25   Surfaced.  
    20.00          "             BF 4974    
      W 7, Sea 6, overcast, Vis. medium, medium-bright night, no marine phosphorescence    
                                                       
    14.01.42      
    00.00 Bay of Biscay  BF 4892    
      W 7, Sea 6, 4/10, Vis. medium, medium-bright night, faint marine phosphorescence, high W-swell    
           
Sun and Moon Data 12.01.43
Sun and Moon Data 13.01.43
Sun and Moon Data 14.01.43
 
- 3 -
 
           
           
           
    continued      
    14.01.42      
    02.10   Fu.M.B. out of service, cable broken.  
    02.15   Dived.  Proceeded submerged.  
    04.00 Bay of Biscay  BF 4889    
    08.00          "             BF 7233    
    12.00          "             BF 7231 Day's run:  Surfaced 41 nm, Submerged 50 nm.  
    16.00          "             BF 7223    
    19.32   Surfaced.  
    20.00 Bay of Biscay  BF 7215    
      W 5, Sea 4, 3/10, Vis. good, moonlit night, no marine phosphorescence    
    20.55   Difference between dead reckoning and actual position after a navigation fix:  130°T, 3 nm.  
    21.20          "             BF 7217 "Crash dive" for aircraft, large land-based aircraft passed directly ahead, altitude about 600-800 meters.  Nothing heard in the Fu.M.B., inspection showed that the cable had broken again.  
    23.20   Surfaced.  
                                                       
    15.01.43      
    00.00 Bay of Biscay  BF 7162    
      WNW 5, Sea 4, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 Bay of Biscay  BF 7157    
      W 3, Sea 2, 4/10, Vis. changing, medium-bright night, no marine phosphorescence    
    08.00 North Atlantic  BE 9399    
      SW 4, Sea 4, 6/10, Vis. good, medium-bright night    
    08.35   Difference between dead reckoning and actual position after a navigation fix:  230°T, 1 nm.  
    08.50   "Crash dive" for training.  Proceeded submerged.  
    12.00 North Atlantic  BE 9396 Day's run:  Surfaced 84 nm, Submerged 40 nm.  
    16.00           "            BE 9388    
    19.38   Surfaced.  
    20.00           "            BE 9379    
      SSW 4, Sea 3-4, overcast, Vis. good, moonlit night    
                                                       
    16.01.43      
    00.00 North Atlantic  BE 9298    
      S 4, Sea 3, overcast, rain, Vis. medium, moonlit night, no marine phosphorescence    
           
Sun and Moon Data 14.01.43
Sun and Moon Data 15.01.43
Sun and Moon Data 16.01.43
 
- 4 -
 
           
           
           
           
    16.01.43      
    04.00 North Atlantic  BE 9287 Incoming Radio Message:  1836/15/50:  
      SSW 3, Sea 2-3, 4/10, Vis. changing, no marine phosphorescence 1.  "Schwandtke", "Wissmann" head for square DG 92.  
      2.  . . . .  
    08.00 North Atlantic  BE 9198    
      SSW 2-3, Sea 2, 9/10, Vis. medium    
    09.12   Dived.  Proceeded submerged.  
    12.00 North Atlantic  BE 9189 Day's run:  Surfaced 103 nm, Submerged 31 nm.  
    16.00           "            BE 9187    
    19.47   Surfaced.  
    20.00 North Atlantic  BE 9178 Fu.M.B. cable broken again twice.  
      NNW 5, Sea 4, 9/10, Vis. good, high NW-swell The newly delivered Fu.M.B. cable from the Kriegsmarine Werft-Lorient is bad.  In five nights it has already broken four times, on the contrary the first cable I was equipped with in Hamburg never broke.  
                                                       
    17.01.43      
    00.00 North Atlantic  BE 8634    
      NNW 6, Sea 5, 5/10, Vis. good, moonlit night, no marine phosphorescence, high NW-swell    
    04.00 North Atlantic  BE 8643    
      NW 4, Sea 3-4, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    08.00 North Atlantic  BE 8568    
      NW 3, Sea 2-3, 8/10, Vis. medium    
    09.05   Difference between dead reckoning and actual position after a navigation fix:  0°T, 15 nm.  
    09.56 - 10.39   Test dive.  
    12.00 North Atlantic  BE 8555 Day's run:  Surfaced 119 nm, Submerged 26 nm.  
      SW 3-4, Sea 3, 9/10, Vis. good    
    16.00 North Atlantic  BE 8572    
      S 4, Sea 3-4, overcast, rain showers, Vis. good    
    18.10   Incoming Radio Message:  1628/17/79:  
        1.  . . . .  
        2.  "Poser" and "Wissmann" are reminded of passing report.  
        3.  . . . .  
    20.00 North Atlantic  BE 8733    
      SSW 5, Sea 4, overcast, Vis. medium    
           
           
           
Sun and Moon Data 21.01.43
Sun and Moon Data 22.01.43
Sun and Moon Data 23.01.43
 
- 5 -
 
           
           
           
    continued      
    17.01.43      
    21.40   Outgoing Radio Message:  2142/17/98:  
        Position naval square BE 8735, S 6, 1003 mb, falling, overcast, Vis. medium.  Fu.M.B. cable supplied by Kriegsmarine Werft Lorient is bad, already broken four times.  Cable received in Hamburg for 1st war patrol was much better.  Am missing Serial No. 75, 77, 79, 80 from 12th, 93, 99 from 13th.        - Wissmann -  
                                                       
    18.01.43      
    00.00 North Atlantic  BE 8763    
      SSW 3, Sea 2, overcast, rain showers, Vis. medium, faint marine phosphorescence    
    04.00 North Atlantic  BE 8785    
      SSW 3, Sea 2, overcast, rain, Vis. medium, medium-bright night, faint marine phosphorescence    
    08.00 North Atlantic  CF 2235    
      SSW 3, Sea 2, overcast, Vis. medium    
    09.43 - 10.33   Test dive.  
    12.00 North Atlantic  CF 2295 Day's run:  Surfaced 146 nm, Submerged 3 nm.  
      SW 3-4, Sea 3, 4/10, Vis. good    
    16.00 North Atlantic  CF 2534    
      SW 4, Sea 3, 7/10, Vis. medium to good    
    20.00 North Atlantic  CF 2559    
      SSW 6, Sea 5, overcast, rain, Vis. changing    
                                                       
    19.01.43      
    00.00 North Atlantic  CF 2588    
      SW 7, Sea 6, 8/10, rain, Vis. changing, moonlit night, no marine phosphorescence, high SW-swell    
    04.00 North Atlantic  CF 2824    
      W 7, Sea 6, 7/10, Vis. changing, moonlit night, no marine phosphorescence, high confused swell    
           
           
           
           
Sun and Moon Data 17.01.43
Sun and Moon Data 18.01.43
Sun and Moon Data 19.01.43
 
- 6 -
 
           
           
           
    continued      
    19.01.43      
    08.00 North Atlantic  CF 2846    
      SW 6, Sea 5, 8/10, Vis. changing, slight marine phosphorescence    
    09.38 - 10.20   Test dive.  
    12.00 North Atlantic  CF 2875 Day's run:  Surfaced 116 nm, Submerged 3 nm.  
      WSW 5, Sea 4, 5/10, Vis. good    
    16.00 North Atlantic  CF 5218    
      WSW 4, Sea 3, 5/10, isolated rain showers, Vis. good    
    19.25   Incoming Radio Message 1703/19/151:  
        1.  "Schwandtke", "Bargsten", "Becker", "Wissmann" head for naval square 72 of the large square east of square DT at economical cruising speed.  
        2.  . . . .  
    20.00 North Atlantic  CF 5248    
      SW 3-4, Sea 3, 4/10, Vis. medium to good    
                                                       
    20.01.43      
    00.00 North Atlantic  CF 5278    
      WSW 3, Sea 2, 8/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  CF 5542    
      SW 3-4, Sea 3, 4/10, rain showers, Vis. changing, moonlit night, no marine phosphorescence, heavy summer lightening    
    08.00 North Atlantic  CF 5575    
      SW 3, Sea 2-3, 7/10, Vis. changing    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  4°T, 25 nm.  
    09.18 - 09.40   Test dive.  
    12.00 North Atlantic  CF 5572 Day's run:  Surfaced 128 nm, Submerged 2 nm.  
      WSW 4, Sea 2, 6/10, Vis. good    
    16.00 North Atlantic  CF 5818    
      SW 3-4, Sea 3, 7/10, Vis. good    
    20.00 North Atlantic  CF 5872    
      W 3, Sea 2-3, 7/10, Vis. good    
                                                       
           
Sun and Moon Data 19.01.43
Sun and Moon Data 20.01.43
 
- 7 -
 
           
           
           
           
    21.01.43      
    00.00 North Atlantic  CF 8215    
      NW 3, Sea 2-3, 7/10, rain shower, Vis. good, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  CF 8272    
      WNW 3, Sea 2, 4/10, Vis. good, moonlit night, no marine phosphorescence    
    08.00 North Atlantic  CF 8515    
      WNW 3, Sea 2, 8/10, Vis. good, slight marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  102°T, 10 nm.  
    09.25 - 10.11   Test dive.  
    12.00 North Atlantic  CF 8573 Day's run:  Surfaced 154 nm, Submerged 3 nm.  
      WNW 3, Sea 2-3, 7/10, Vis. good    
    16.00 North Atlantic  CF 8816    
      WNW 3, Sea 2-3, 7/10, Vis. good    
    20.00 North Atlantic  CF 8873    
      SW 3, Sea 2-3, overcast, rain, Vis. medium    
                                                       
    22.01.43      
    00.00 North Atlantic  DH 1319    
      SSW 2, Sea 1-2, overcast, rain, Vis. changing, no marine phosphorescence    
    00.30   Incoming Radio Message 2239/21/399:  
        Occupy NS strips between the latitude of the squares 7135 lower edge and 7195 upper edge, together with the longitude of the squares 7156 right edge and 7355 left edge starting from the west:  "Wissmann", "Schwandtke", "Becker" and "Bargsten" equal spacing.  "Markworth" occupy area between the named latitudes adjoining to the east up to the coast.  All naval squares in the large square east of square DT.  
        2.  In the named area expect NS convoy traffic and fast independents.  Countering this traffic is of utmost importance to the Africa Front.  
    04.00 North Atlantic  DH 1373    
      W 2-3, Sea 2, 9/10, Vis. good, moonlit night, no marine phosphorescence    
           
           
           
Sun and Moon Data 21.01.43
Sun and Moon Data 22.01.43
 
- 8 -
 
           
           
           
    continued      
    22.01.43      
    08.00 North Atlantic  DH 1619    
      SW 2, Sea 1-2, 9/10, Vis. medium, hazy    
    09.22 - 09.55   Test dive.  
    12.00 North Atlantic  DH 1673 Day's run:  Surfaced 164 nm, Submerged 2 nm.  
      SW 2, Sea 1, 6/10, Vis. good    
    14.33   Difference between dead reckoning and actual position after a navigation fix:  0°T, 4 nm.  
    16.00 North Atlantic  DH 1919    
      W 2, Sea 1, 6/10, Vis. good    
    20.00 North Atlantic  DH 1976    
      W 2, Sea 1, 3/10, Vis. good    
                                                       
    23.01.42      
    00.00 North Atlantic  DH 4343    
      W 1, Sea 0-1, 4/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 North Atlantic, DH 4379    
      W 1, Sea 0-1, 1/10, Vis. good, moonlit night, no marine phosphorescence    
    08.00 North Atlantic  DH 4649    
      W 1, Sea 0-1, 5/10, Vis. good, moonlit    
    08.45   Difference between dead reckoning and actual position after a navigation fix:  55°T, 8 nm.  
    09.10 - 09.49   Test dive.  
    12.00 North Atlantic  DH 4687 Day's run:  Surfaced 170 nm, Submerged 2.5 nm.  
      SSE 0-1, Sea 0, 2/10, Vis. good    
    16.00 North Atlantic  DH 4957    
      ENE 1, Sea 0-1, 4/10, Vis. good    
    20.00 North Atlantic  DH 4987    
      E 1-2, Sea 0-1, 3/10, Vis. good    
                                                       
    24.01.43      
    00.00 North Atlantic  DH 7346    
      E 1-2, Sea 0-1, 7/10, Vis. good, moonlit night, no marine phosphorescence    
           
           
           
Sun and Moon Data 22.01.43
Sun and Moon Data 23.01.43
Sun and Moon Data 24.01.43
 
- 9 -
 
           
           
           
    continued      
    24.01.43      
    04.00 North Atlantic DH 7613    
      E 1-2, Sea 1, 9/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 North Atlantic  DH 7649    
      E 1-2, Sea 1, overcast, Vis. good    
    09.18 - 10.11   Test dive.  
    12.00 North Atlantic DH 7916 Day's run:  Surfaced 173 nm, Submerged 3 nm.  
      E 1-2, Sea 1, overcast Vis. good    
    16.00 North Atlantic  DH 7973    
      E 1-2, Sea 1, overcast, Vis. good    
    20.00 Central Atlantic  DT 3317    
      E 2-3, Sea 1-2, 2/10, Vis. good    
    20.35   Difference between dead reckoning and actual position after a navigation fix:  245°T, 10 nm.  
                                                       
    25.01.43      
    00.00 Central Atlantic  DT 3296    
      E 3, Sea 2, 5/10, Vis. good, dark night, heavy marine phosphorescence    
    04.00 Central Atlantic  DT 3642    
      ENE 3, Sea 2, 9/10, moonlit night, Vis. good, no marine phosphorescence    
    08.00 Central Atlantic  DT 3676    
      ENE 3, Sea 2, 6/10, moonlit, Vis. good    
    08.37   Difference between dead reckoning and actual position after a navigation fix:  205°T, 2.5 nm.  
    09.06 - 10.07   Test dive.  
    12.00 Central Atlantic  DT 3927 Day's run:  Surfaced 171 nm, Submerged 3.5 nm.  
      ENE 3, Sea 2, 5/10, Vis. good    
    16.00 Central Atlantic  DT 3986    
      ENE 3, Sea 2-3, 4/10, Vis. good    
    20.00 Central Atlantic  DT 3987    
      NE 3, Sea 2-3, 2/10, Vis. good    
    20.32   Difference between dead reckoning and actual position after a navigation fix:  0°T, 11 nm.  
                                                       
           
Sun and Moon Data 24.01.43
Sun and Moon Data 25.01.43
 
- 10 -
 
           
           
           
           
    26.01.43      
    00.00 Central Atlantic  DT 6369    
      NE 3, Sea 2-3, 1/10, Vis. good, medium-bright night    
    04.00 Central Atlantic  DU 4411    
      NE 3, Sea 2-3, 1/10, Vis. good, moonlit night, no marine phosphorescence    
    08.00 Central Atlantic  DU 4446    
      NE 3, Sea 2, 2/10, Vis. good, moonlit night    
    08.30   Difference between dead reckoning and actual position after a navigation fix:  196°T, 5 nm.  
    09.04 - 09.59   Test dive.  
    12.00 Central Atlantic  DU 4721 Day's run:  Surfaced 160 nm, Submerged 3 nm.  
      NE 3, Sea 2, 1/10, Vis. good    
    16.00 Central Atlantic  DU 4758    
      NE 2-3, Sea 2, blue sky, Vis. good    
    20.00 Central Atlantic  DU 7137 Entered the operations area, intend alternating on E-W courses back and forth in position in my part of the NS-line.  
      ENE 1-2, Sea 1, blue sky, Vis. good  
    20.35   Difference between dead reckoning and actual position after a navigation fix:  135°T, 4 nm.  
                                                       
    27.01.43      
    00.00 Central Atlantic  DU 7243    
      NE 1-2, Sea 1, blue sky, Vis. medium, hazy, marine phosphorescence    
    04.00 Central Atlantic  DU 7158    
      ENE 2, Sea 1, blue sky, Vis. good, moonlit night, no marine phosphorescence    
    08.00 Central Atlantic  DU 7274    
      ENE 2, Sea 1, blue sky, Vis. good, moonlit    
    08.25   Difference between dead reckoning and actual position after a navigation fix:  110°T, 12 nm.  
    09.13 - 09.37   Test dive.  
    12.00 Central Atlantic  DU 7191 Day's run:  Surfaced 166 nm, Submerged 2 nm.  
      E 3, Sea 2-3, blue sky, Vis. medium, hazy    
    16.00 Central Atlantic  DU 7247    
      E 3, Sea 2-3, blue sky, Vis. medium, hazy    
    20.00 Central Atlantic  DU 7153    
      E 2-3, Sea 2, 1/10, Vis. medium, hazy    
                                                       
           
           
Sun and Moon Data 26.01.43
Sun and Moon Data 27.01.43
 
- 11 -
 
           
           
           
           
    28.01.43      
    00.00 Central Atlantic  DU 7165    
      E 2, Sea 1, blue sky, hazy, Vis. low, medium-bright night, marine phosphorescence    
    00.30   Incoming Radio Message 1833/27/344:  
        1.  "Wissmann", "Schwandtke", "Becker", "Bargsten", "Markworth" form Group "Rochen".  
        2.  This evening from attack area advance with day's run 150 nm to the north to pass through first position line:  square 4351 to square 5185, second position line:  square 2231 to square 2365.  All naval squares in the large square east of DT.  
        3.  Subsequently occupy as attack area with depth 15 nm.  "Wissmann" square 9595, "Schwandtke" 9912, "Becker" 9566, "Bargsten" 9672, "Markworth" 9687.  All DH.  Expect convoy traffic in NE-SW direction.  
        Changed course accordingly.  
    04.00 Central Atlantic  DU 7211    
      ENE 2, Sea 1-2, blue sky, hazy, Vis. medium, faint marine phosphorescence, moonlit night    
    08.00 Central Atlantic  DU 4849    
      NE 1-2, Sea 1, blue sky, Vis. medium, hazy, moonlit night    
    08.30   Difference between dead reckoning and actual position after a navigation fix:  168°T, 10 nm.  
    08.57 - 09.16   Test dive.  
    12.00 Central Atlantic  DU 4852 Day's run:  Surfaced 145 nm, Submerged 1.5 nm.  
      NE 1-2, Sea 1, blue sky, hazy, Vis. medium to good    
    16.00 Central Atlantic  DU 4594    
      ENE 2, Sea 1, blue sky, hazy, Vis. medium    
    20.00 Central Atlantic  DU 4563    
      NE 1, Sea 0-1, blue sky, hazy, Vis. medium    
    20.24   Difference between dead reckoning and actual position after a navigation fix:  293°T, 11 nm.  
    22.00   Incoming Radio Message 1949/28/354:  
        1.  "Hartenstein", "Neitzel", "Wissmann" head for square EJ 70.  
        2.  . . . .  
        Changed course to the south.  
                                                       
    29.01.43      
    00.00 Central Atlantic  DU 4534    
      NE 1, Sea 0-1, blue sky, dark night, marine phosphorescence, Vis. medium    
           
           
           
Sun and Moon Data 28.01.43
Sun and Moon Data 29.01.43
 
- 12 -
 
           
           
           
           
    29.01.43      
    04.00 Central Atlantic  DU 4549    
      NE 1, Sea 0-1, blue sky, Vis. medium, hazy, moonlit night, no marine phosphorescence    
    08.00 Central Atlantic  DU 4733    
      ENE 1, Sea 0-1, blue sky, Vis. medium, hazy, moonlit night    
    08.25   Difference between dead reckoning and actual position after a navigation fix:  95°T, 6 nm.  
    08.57 - 09.42   Test dive.  
    12.00 Central Atlantic  DU 4763 Day's run:  Surfaced 170 nm, Submerged 2 nm.  
      E 1, Sea 0-1, blue sky, hazy, Vis. medium    
    16.00 Central Atlantic  DU 4776    
      E 1, Sea 0-1, overcastblue sky    
    20.00 Central Atlantic  DT 9335    
      ENE 1, Sea 0-1, blue sky, Vis. medium    
    20.33   Difference between dead reckoning and actual position after a navigation fix:  138°T, 5 nm.  
                                                       
    30.01.43      
    00.00 Central Atlantic  DT 9361    
      NNE 1-2, Sea 1, blue sky, Vis. medium, dark night, marine phosphorescence    
    04.00 Central Atlantic  DT 9356    
      NNE 2, Sea 1-2, blue sky, hazy, Vis. medium, moonlit night, no marine phosphorescence    
    08.00 Central Atlantic  DT 9358    
      NE 3, Sea 2, blue sky, Vis. medium, moonlit    
    08.58 - 09.28   Test dive.  
    12.00 Central Atlantic  DT 9611 Day's run:  Surfaced 115 nm, Submerged 2 nm.  
      ENE 3, Sea 2-3, overcast, Vis. good    
    16.00 Central Atlantic  DT 9563 Incoming Radio Message 1501/30/374:  
      ENE 2-3, Sea 1-2, overcast, hazy, Vis. medium to good To my U-boat men:  
      Today by order of the Führer I have taken over the High Command of the Kriegsmarine.  I will continue to lead the U-boat war myself. (3 installments follow at greater intervals).  
    19.30   Change of the Oberbefehlshabers is announced to the crew, afterwards a glass of champagne is drunk to the new Oberbefehlshaber, to mark the momentous occasion.  
           
           
Sun and Moon Data 29.01.43
Sun and Moon Data 30.01.43
 
- 13 -
 
           
           
           
    continued      
    30.01.43      
    20.00 Central Atlantic  DT 9576    
      NE 3, Sea 2, 9/10, Vis. medium    
                                                       
    31.01.43      
    00.00 Central Atlantic  DT 9578    
      NE 3, Sea 2, overcast, hazy, Vis. low, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  DT 9733    
      NE 3, Sea 2, overcast, Vis. good, dark night, faint marine phosphorescence    
    08.00 Central Atlantic  DT 9735    
      NE 2-3, Sea 2, overcast, Vis. good, medium-bright night, faint marine phosphorescence    
    08.58 - 09.53   Test dive.  
    12.00 Central Atlantic  DT 9756 Day's run:  Surfaced 109 nm, Submerged 3 nm.  
      NE 2-3, Sea 1-2, overcast, Vis. medium to good    
    15.07   Difference between dead reckoning and actual position after a navigation fix:  300°T, 31 nm.  
    16.00 Central Atlantic  DT 6992    
      NE 2-3, Sea 1-2, overcast, Vis. good    
    20.00 Central Atlantic  EJ 2337    
      NE 2, Sea 1-2, 8/10, Vis. medium, medium-bright night, faint marine phosphorescence    
                                                       
    01.02.43      
    00.00 Central Atlantic  EJ 2358    
      NE 2, Sea 1-2, overcast, Vis. medium, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  EJ 2383    
      NE 2, Sea 1-2, 9/10, Vis. medium, dark night, marine phosphorescence    
    08.00 Central Atlantic  EJ 2388    
      NE 2, Sea 1-2, overcast, Vis. medium, medium-bright night, marine phosphorescence    
           
           
Sun and Moon Data 30.01.43
Sun and Moon Data 31.01.43
Sun and Moon Data 01.02.43
 
- 14 -
 
           
           
           
    continued      
    01.02.43      
    08.35   Difference between dead reckoning and actual position after a navigation fix:  160°T, 11 nm.  
    08.56 - 09.25   Test dive.  
    12.00 Central Atlantic  EJ 2658 Day's run:  Surfaced 115 nm, Submerged 2 nm.  
      NE 2-3, Sea 2, 8/10, Vis. good    
    13.15   Incoming Radio Message 1236/1/395:  
        New objective for "Wissmann" naval square FJ 30.  
    16.00 Central Atlantic  EJ 2915    
      NE 2-3, Sea 2, 7/10, Vis. good    
    20.00 Central Atlantic  EJ 2868    
      NNE 2, Sea 1, 9/10, Vis. good    
    20.54   Difference between dead reckoning and actual position after a navigation fix:  340°T, 12 nm.  
                                                       
    02.02.43      
    00.00 Central Atlantic  EJ 2881    
      NE 2, Sea 1-2, blue sky, Vis. good, dark night, heavy marine phosphorescence    
    04.00 Central Atlantic  EJ 5211    
      NE 2, Sea 1, 3/10, Vis. medium, medium-bright night, heavy marine phosphorescence    
    08.00 Central Atlantic  EJ 5153    
      NE 2, Sea 1, blue sky, Vis. medium, medium-bright night, faint marine phosphorescence    
    08.45   Difference between dead reckoning and actual position after a navigation fix:  263°T, 8 nm.  
    09.08 - 09.44   Test dive.  
    12.00 Central Atlantic  EJ 5175 Day's run:  Surfaced 168 nm, Submerged 2 nm.  
      NE 3, Sea 2, blue sky, Vis. medium, hazy    
    16.00 Central Atlantic  EJ 4669    
      NE 3, Sea 2, 3/10, Vis. medium, hazy    
    20.00 Central Atlantic  EJ 4694    
      NE 3, Sea 2, blue sky, Vis. medium, hazy    
    21.05   Difference between dead reckoning and actual position after a navigation fix:  305°T, 6 nm.  
                                                       
           
           
           
           
Sun and Moon Data 01.02.43
Sun and Moon Data 02.02.43
 
- 15 -
 
           
           
           
           
    03.02.43      
    00.00 Central Atlantic  EJ 4927    
      NNE 3, Sea 2, blue sky, Vis. medium, hazy, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  EJ 4972    
      NNE 3-4, Sea 2-3, blue sky, Vis. medium, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  EJ 7236    
      NNE 2-3, Sea 2, 1/10, Vis. medium to good, medium-bright night, faint marine phosphorescence    
    09.08 - 09.44   Test dive.  
    12.00 Central Atlantic  EJ 7267 Day's run:  Surfaced 169 nm, Submerged 2 nm.  
      NNE 3, Sea 2, 3/10, Vis. medium    
    15.10   Difference between dead reckoning and actual position after a navigation fix:  90°T, 2.5 nm.  
    16.00 Central Atlantic  EJ 7525    
      NNE 3, Sea 2, 3/10, Vis. medium    
    20.00 Central Atlantic  EJ 7549    
      NE 2-3, Sea 2, 4/10, Vis. medium    
                                                       
    04.02.43      
    00.00 Central Atlantic  EJ 7811    
      NE 2-3, Sea 2, blue sky, Vis. medium, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  EJ 7768    
      E 2, Sea 2, 9/10, Vis. medium, heavy marine phosphorescence    
    08.00 Central Atlantic  ES 1123    
      E 2-3, Sea 2, 7/10, Vis. medium, hazy, heavy marine phosphorescence    
    09.18 - 10.01   Test dive.  
    12.00 Central Atlantic  ES 1154 Day's run:  Surfaced 166 nm, Submerged 2.5 nm.  
      E 1-2, Sea 0-1, 8/10, Vis. medium, hazy    
    16.00 Central Atlantic  ES 1178    
      ENE 1, Sea 0-1, 4/10, Vis. medium, hazy    
    16.03   Difference between dead reckoning and actual position after a navigation fix:  25°T, 8 nm.  
           
Sun and Moon Data 03.02.43
Sun and Moon Data 04.02.43
 
- 16 -
 
           
           
           
    continued      
    04.02.43      
    20.00 Central Atlantic  ES 1414    
      ENE 1, Sea 0-1, 5/10, Vis. medium    
                                                       
    05.02.43      
    00.00 Central Atlantic  ER 3668    
      ENE 1, Sea 0-1, blue sky, Vis. medium, marine phosphorescence    
    04.00 Central Atlantic  ER 3923    
      NE 1-2, Sea 0-1, 3/10, Vis. medium, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  ER 3956    
      NE 1-2, Sea 0-1, 3/10, Vis. medium, medium-bright night, faint marine phosphorescence    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  90°T, 12 nm.  
    09.19 - 09.56   Test dive.  
    12.00 Central Atlantic  ER 3988 Day's run:  Surfaced 159 nm, Submerged 2 nm.  
      NE 2, Sea 1, 3/10, Vis. good    
    14.30   Incoming Radio Message 1253/5/335:  
        To "Wissmann" Officer Only  
        1.  Free to maneuver from FC 77 south along the coast up to FJ lower edge.  All naval squares.  
        2.  Expect medium to heavy air and detection.  
        3.  You are free to enter territorial waters, penetrating harbors and bombarding the same is forbidden  
        I could not wish for a better operations area than this.  
    16.00 Central Atlantic  ER 6343    
      NE 2, Sea 2, 2/10, Vis. good    
    20.00 Central Atlantic  ER 6377    
      NNE 2-3, Sea 1-2, 4/10, Vis. good    
                                                       
    06.02.43      
    00.00 Central Atlantic  ER 6562    
      NNE 2-3, Sea 1-2, 6/10, Vis. medium, medium-bright night, faint marine phosphorescence    
           
           
           
           
           
Sun and Moon Data 04.02.43
Sun and Moon Data 05.02.43
Sun and Moon Data 06.02.43
 
- 17 -
 
           
           
           
    continued      
    06.02.43      
    04.00 Central Atlantic  ER 6586    
      NE 2, Sea 1, 3/10, Vis. medium, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic ER 6853    
      NE 2-3, Sea 1-2, 3/10, Vis. medium, faint marine phosphorescence, heavy marine phosphorescence    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  113°T, 2.5 nm.  
    09.28 - 10.02   Test dive.  
    12.00 Central Atlantic  ER 6886 Day's run:  Surfaced 163 nm, Submerged 2 nm.  
      NE 2, Sea 1, 8/10, Vis. medium    
    16.00 Central Atlantic  ER 9252    
      NE 3, Sea 2, 4/10, Vis. good    
    20.00 Central Atlantic  ER 9288    
      ENE 2-3, Sea 2, overcast, Vis. medium to good, rain    
                                                       
    07.02.43      
    00.00 Central Atlantic  ER 9552    
      E 2, Sea 1, 7/10, Vis. good, medium-bright night, faint marine phosphorescence, heavy summer lightening    
    04.00 Central Atlantic  ER 9587    
      E 2, Sea 1-2, overcast, rain, Vis. medium, dark night, marine phosphorescence    
    08.00 Central Atlantic  ER 9851    
      E 2, Sea 1-2, 6/10, Vis. bad, dark night, marine phosphorescence    
    09.20 - 09.53   Test dive.  
    12.00 Central Atlantic  ER 9876 Day's run:  Surfaced 159 nm, Submerged 2 nm.  
      ESE 3, Sea 2, 9/10, Vis. good    
    16.00 Central Atlantic  FC 3219    
      ESE 1-2, Sea 1, 4/10, Vis. good    
    18.10   Difference between dead reckoning and actual position after a navigation fix:  262°T, 12 nm.  
           
Sun and Moon Data 06.02.43
Sun and Moon Data 07.02.43
 
- 18 -
 
           
           
           
    continued      
    07.02.43      
    20.00 Central Atlantic  FC 3274    
      E 1-2, Sea 1, 5/10, dark night, Vis. medium    
                                                       
    08.02.43      
    00.00 Central Atlantic  FC 3436    
      E 2, Sea 1, 1/10, dark night, Vis. medium    
    04.00 Central Atlantic  FC 3469    
      E 2-3, Sea 1-2, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FC 3736 Difference between dead reckoning and actual position after a navigation fix:  320°T, 5 nm.  
      E 2-3, Sea 1-2, 4/10, Vis. good  
    09.05 - 10.15   Test dive.  
    12.00 Central Atlantic  FC 3765 Day's run:  Surfaced 143 nm, Submerged 3 nm.  
      SE 2-3, Sea 2, 5/10, Vis. good    
    14.20 FC 3792 Equator Christening.  
    16.00 Central Atlantic  FC 3795    
      SSE 2-3, Sea 2, 4/10, Vis. good    
    20.00 Central Atlantic  FC 3795    
      SSE 3, Sea 2-3, 4/10, Vis. good    
                                                       
    09.02.43      
    00.00 Central Atlantic  FC 6123    
      SE 3, Sea 2-3, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FC 6142    
      SE 3-4. Sea 2-3, 1/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FC 5392    
      SE 2-3, Sea 2, 2/10, Vis. good, faint marine phosphorescence    
    09.19 - 09.46   Test dive.  
           
Sun and Moon Data 07.02.43
Sun and Moon Data 08.02.43
Sun and Moon Data 09.02.43
 
- 19 -
 
           
           
           
    continued      
    09.02.43      
    12.00 Central Atlantic  FC 5388 Day's run:  Surfaced 118 nm, Submerged 2 nm.  
      SE 2-3, Sea 2, 2/10, Vis. good    
    15.52                          FC 5618 Crash dive for aircraft, large land-based aircraft to starboard in parallel flight.  
    16.00 Central Atlantic  FC 5618    
    16.34   Surfaced.  
    20.00 Central Atlantic  FC 5568    
      E 2, Sea 1, 3/10, Vis. good    
    21.47   Difference between dead reckoning and actual position after a navigation fix:  269°T, 15 nm.  
                                                       
    10.02.43      
    00.00 Central Atlantic  FC 5499    
      ESE 2, Sea 1, 2/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 Central Atlantic  FC 5729    
      E 2-3, Sea 2, 2/10, Vis. good, marine phosphorescence    
    08.00 Central Atlantic  FC 5772    
      E 2-3, Sea 1-2, 3/10, Vis. changing, marine phosphorescence    
    08.52   Difference between dead reckoning and actual position after a navigation fix:  256°T, 3 nm.  
    09.18 - 09.58   Test dive.  
    12.00 Central Atlantic  FC 7326 Day's run:  Surfaced 159 nm, Submerged 4 nm.  
      SE 2, Sea 1-2, 4/10, Vis. good    
    16.00 Central Atlantic  FC 7349 In the torpedo fire control system the bearing transmitter of the UZO to the torpedo tubes has failed permanently, for days ongoing attempts to repair the malfunction have been unsuccessful.  
      SE 2, Sea 1-2, 3/10, Vis. good  
    20.00 Central Atlantic  FC 7532    
      ESE 2, Sea 1-2, 4/10, Vis. good    
    21.57   Difference between dead reckoning and actual position after a navigation fix:  35°T, 10 nm.  
                                                       
    11.02.43      
    00.00 Central Atlantic  FC 7532    
      ESE 2-3, Sea 2, 2/10, Vis. good, bright moonlit night, no marine phosphorescence    
           
           
           
Sun and Moon Data 09.02.43
Sun and Moon Data 10.02.43
Sun and Moon Data 11.02.43
 
- 20 -
 
           
           
           
    continued      
    11.02.43      
    04.00 Central Atlantic    
      FC 7523    
      SE 2-3, Sea 2, 4/10, Vis. good, moonlit night, faint marine phosphorescence    
    08.00 Central Atlantic  FC 7522    
      ENE 3, Sea 2, 4/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.05   Light in sight to starboard, astern, 345°T, turned towards.  
    08.15   It is a brightly illuminated steamer, apparently neutral, course 190-200°, speed 8-9 knots.  
    08.40   It is the Swiss chartered Greek steamer "NEREUS" with correct markings.  Turned away, ran off.  
    08.46   Difference between dead reckoning and actual position after a navigation fix:  275°T, 10 nm.  
    09.00 - 10.22   Test dive.  
        Entered the operations area, intend initially to head for the 200 meter line at the NE-corner of Brazil.  
    12.00 Central Atlantic  FC 7527 Day's run:  Surfaced 92 nm, Submerged 2 nm.  
      E 2, Sea 1-2, 4/10, Vis. good    
    12.02   "Crash dive" for aircraft, biplane, land-based aircraft.  
    13.10   Surfaced.  
    16.00 Central Atlantic  FC 7548    
      E 2, Sea 1-2, 2/10, Vis. good    
    16.59                          FC 7572 "Crash dive" for aircraft, large land-based aircraft.  
    17.51   Surfaced.  
    18.19                          FC 7574 "Crash dive" for aircraft, large land-based aircraft, probably the same aircraft as at 16.59 hours.  
        Intend to remain submerged until darkness.  
    18.35                          FC 7574 Faint propeller sounds to starboard bearing 75°R, 280°T.  
    18.50   Nothing seen at periscope depth.  
    19.05   Sound bearing shifts slowly ahead and grows louder.  
    19.25                          FC 7577 A passenger freighter in sight in the periscope, bearing 240°T, bow left, target angle 80°, range 6000 meters, in front of it 1 destroyer, behind it 1 additional destroyer heard.  Convoy steers 140°, runs at about 12 knots.  
    19.30   Can no longer get in position for a submerged attack.  Intend to attack on the surface at night.  Holding contact up to twilight appears possible without difficulties with the good sound conditions.  
           
Sun and Moon Data 11.02.43
 
- 21 -
 
           
           
           
    continued      
    11.02.43      
    20.00 Central Atlantic  FC 7577    
    20.28   Sound bearings suddenly became fainter.  
    20.30   At periscope depth, steamer smokestack is still clearly visible, positioned on the same bearing as the mast, therefore target angle is 180°.  The stern destroyer is heard clearly in the listening gear, however can not be found in the periscope.  
    20.45   Turned to follow submerged.  
    21.06   Sound bearings grow weaker and inexact.  
    21.10   Surfaced, too late, nothing more is seen of the steamer or the destroyers.  
    21.15   Pursued in the direction of the last sound bearing.  
    22.10 E 2, Sea 1-2, 4/10, Vis. good Difference between dead reckoning and actual position after a navigation fix:  0°T, 10 nm.  
    22.30   Because up to now nothing is found, dived to listen.  Nothing heard.  
    23.14   Surfaced, pursuit broken off, because there are no further indications.  
                                                       
    12.02.43      
    00.00 Central Atlantic  FC 7816 Intend to steer along the coast on the 200-meter line in legs to the south  
      E 2, Sea 1-2, 3/10, Vis. good, moonlit night, faint marine phosphorescence  
    04.00 Central Atlantic  FC 7845    
      ENE 3, Sea 2, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FC 7879    
      ENE 3, Sea 2, 4/10, Vis good, medium-bright night, faint marine phosphorescence    
    08.02   Difference between dead reckoning and actual position after a navigation fix:  146°T, 4 nm.  
    09.24   Dived.  
        Expect heavy air reconnaissance, therefore will remain submerged initially, to remain unnoticed at all cost.  The apparently good sound conditions appear to guarantee  that traffic will be detected submerged.  
    12.00 Central Atlantic  FJ 3227 Day's run:  Surfaced 124 nm, Submerged 15 nm.  
    15.27 - 15.46   Boat ventilated.  
    16.00 Central Atlantic  FJ 3255    
           
           
Sun and Moon Data 11.02.43
Sun and Moon Data 12.02.43
 
- 22 -
 
           
           
           
    continued      
    12.02.43      
    20.00 Central Atlantic  FJ 3259 In the boat temperatures up to 45°C, nearly unbearable.  
    21.56   Surfaced.  
    22.03   Difference between dead reckoning and actual position after a navigation fix:  80°T, 10 nm.  
        Intend to continue on the 200-meter line in legs to the south to search for traffic.  
                                                       
    13.02.43      
    00.00 Central Atlantic  FJ 3297    
      E 3, Sea 2, 4/10, Vis. good, moonlit night, faint marine phosphorescence    
    04.00 Central Atlantic  FJ 3537    
      SE 2-3, Sea 2, 3/10, Vis. good, moonlit night    
    08.00 Central Atlantic  FJ 3593    
      SE 2, Sea 1, 2/10, Vis. good, faint marine phosphorescence    
    09.17 - 10.27   Test dive.  
        Intend to continue on the surface, to determine the exact air situation.  
    12.00 Central Atlantic  FJ 3594 Day's run:  Surfaced 84 nm, Submerged 29 nm.  
      SSE 2, Sea 1, 4/10, Vis. good    
    16.00 Central Atlantic  FJ 3675    
      SE 2, Sea 1, 4/10, Vis. good    
    20.00 Central Atlantic  FJ 3595    
      ESE 2, Sea 1-2, 4/10, Vis. good    
    22.06   Difference between dead reckoning and actual position after a navigation fix:  0°T, 2 nm.  
        Intend to advance directly off Pernambuco [Recife] tonight.  
                                                       
    14.02.43      
    00.00 Central Atlantic  FJ 3832    
      ESE 2, Sea 1, 6/10, Vis. good, moonlit night, no marine phosphorescence    
           
           
Sun and Moon Data 12.02.43
Sun and Moon Data 13.02.43
Sun and Moon Data 14.02.43
 
- 23 -
 
           
           
           
    continued      
    14.02.43      
    02.30   Lights from Pernambuco [Recife] and Olinda in sight.  Apparently the lighthouses are not burning or are dimmed.  
    04.00 Central Atlantic  FJ 3858 I have before me an enormous sea of lights, Pernambuco lies brightly illuminated there.  No ships, no shadows are seen.  
      ESE 2, Sea 1, 2/10, Vis. good, moonlit night, faint marine phosphorescence  
    04.30   Am positioned directly off Pernambuco [Recife] between the 20 and 10 meter lines.  Nothing but a vast sea of lights.  The roadstead is easy to make out, no ships, no shadows.  It is a pity.  
    04.38   Turned away, ran off.  
    08.00 Central Atlantic  FJ 6232    
      ESE 2, Sea 1, 1/10, Vis. good, medium-bright night, faint marine phosphorescence  
    08.50   Difference between dead reckoning and actual position after a navigation fix:  150°T, 7 nm.  
    09.16 - 10.15   Test dive.  
        Intend to continue to the south in legs along the 200-meter line as before.  
    12.00 Central Atlantic  FJ 6256 Day's run:  Surfaced 177 nm, Submerged 3 nm.  
      ESE 2, Sea 1, 4/10, Vis. good    
    15.57                          FJ 6285 "Crash dive" for flying boat.  
    16.00 Central Atlantic  FJ 6285    
    16.35   In an all around sweep before surfacing the flying boat (type Consolidated) is seen in the periscope.  Thus the enemy had seen me, searched for me and waited for me to surface.  He'll wait in vain.  Went deep.  
    18.16   Surfaced.  
    18.32                          FJ 6285 "Crash dive" for flying boat from port astern approaching out of a cloud.  
    18.35   2 aircraft bombs at depth A -45 and A -42 meters.  No significant damage.  In these circumstances remained submerged until darkness.  
    20.00 Central Atlantic  FJ 6289    
    22.08   Surfaced.  
    22.11   "Crash dive" for flying boat abeam to starboard, in the twilight still easily distinguished.  
        The fellow is stubborn.  
    23.16   Surfaced.  
        Intend to change areas emphatically because we have been noticed.  
           
Sun and Moon Data 14.02.43
 
- 24 -
 
           
           
           
    continued      
    14.02.43      
    23.45                          FJ 6526 Light to starboard abeam, bearing 200°T.  Turned towards.  
    23.50   An illuminated steamer, apparently a neutral, is pointed towards me.  
                                                       
    15.02.43      
    00.00 Central Atlantic  FJ 6526 Let steamer come on.  
      ESE 3, Sea 2, 3/10, Vis. good, moonlit night    
    00.30   Steamer steers 20°, runs about 12 knots.  Is an Argentinean tanker, estimated 8000 GRT.  Correct neutrality markings.  
    00.40   Ran off.  
    00.50   Incoming Radio Message 1857/14/369:  
        1.  . . . .  
        2.  . . . .  
        3.  "Wissmann" report situation, if noticed or if traffic observations are at hand.  
        Because as yet I have no observations and am just changing areas, I do not transmit immediately.  
    04.00 Central Atlantic  FJ 6642    
      ESE 3, Sea 2, 4/10, Vis. good, medium-bright night, no marine phosphorescence    
    08.00 Central Atlantic  FJ 6664    
      ESE 2-3, Sea 2, 2/10, Vis. good, faint marine phosphorescence    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  60°T, 8 nm.  
    09.31   Dived.  
        On the basis of previous experience I see the area as heavily patrolled by air and decide to remain submerged by day, particularly since the cloud cover is very unfavorable.  
    12.00 Central Atlantic  FJ 6692 Day's run:  Surfaced 111 nm, Submerged 27 nm.  
    16.00                          FJ 6689    
    16.49 - 17.12   Ventilated the boat.  
    20.00                          FJ 6922    
    22.14 ENE 2, Sea 1, 3/10, Vis. good Surfaced.  
    22.20   Difference between dead reckoning and actual position after a navigation fix:  230°T, 5 nm.  
                                                       
           
Sun and Moon Data 14.02.43
Sun and Moon Data 15.02.43
 
- 25 -
 
           
           
           
           
    16.02.43      
    00.00 Central Atlantic  FJ 6918 Junkers compressor out of service.  Can not be repaired with on board means.  
      ENE 2, Sea 1, 3/10, Vis. good, moonlit night, no marine phosphorescence  
    04.00 Central Atlantic  FJ 6867    
      ENE 2, Sea 1-2, 6/10, Vis. good, moonlit night    
    08.00 Central Atlantic  FJ 6875    
      ENE 2, Sea 1, 4/10, Vis. good, medium-bright night, faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  10°T, 8 nm.  
    09.31   Dived.  
    12.00 Central Atlantic  FJ 6877 Day's run:  Surfaced 80 nm, Submerged 30 nm.  
    13.35                           FJ 6877 Propeller sounds bearing 230°T, 100°T.  
    13.45   At periscope depth, Argentinean freighter in sight, 5000 GRT, bearing 340°R, 110°T, bow right target angle 95-100°, range 3500 meters.  Regular size neutrality markings.  Freighter is loaded, going towards Argentina, seems perfect.  Although stopping and inspecting the steamer is desirable, I see them off.  In this area I think it is impracticable.  
    14.00   Turned off.  
    16.00 Central Atlantic  FJ 9133    
    17.05 - 17.32   Boat ventilated.  
    20.00                          FJ 9132    
    22.17   Surfaced.  
    22.20   Difference between dead reckoning and actual position after a navigation fix:  60°T, 4 nm.  
                                                       
    17.02.43      
    00.00 Central Atlantic  FJ 9126    
      ENE 2-3, Sea 1-2, 4/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 Central Atlantic  FJ 9145    
      NE 2, Sea 1, 3/10, Vis. good, moonlit night, faint marine phosphorescence    
           
           
           
Sun and Moon Data 16.02.43
Sun and Moon Data 17.02.43
 
- 26 -
 
           
           
           
    continued      
    17.02.43      
    08.00 Central Atlantic  FJ 8383    
      NE 2, Sea 1, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  310°T, 6 nm.  
    09.38   Dived.  
    12.00 Central Atlantic  FJ 8387 Day's run:  Surfaced 74 nm, Submerged 28 nm.  
    16.00             "            FJ 8613    
    17.29 - 17.54   Boat ventilated.  
    20.00             "            FJ 8615    
    22.24   Surfaced.  
    22.30   Difference between dead reckoning and actual position after a navigation fix:  185°T, 5 nm.  
        Intend to go towards the coast during the night to go back and forth in position with E -W courses on the 200-meter line.  
                                                       
    18.02.43      
    00.00 Central Atlantic  FJ 8535    
      E 2, Sea 1, 4/10, Vis. good, moonlit night, faint marine phosphorescence    
    04.00 Central Atlantic  FJ 8525    
      E 2, Sea 1, 7/10, Vis. good, moonlit night, no marine phosphorescence    
    05.15                           FJ 8524 Shadow in sight to port ahead, bearing 60°T.  Turn towards.  
    05.20   Shadow is a steamer, this time at long last an enemy.  
    05.23   Maneuvered out of the moon sector and began maneuver ahead.  Enemy steers southwesterly course, runs at 12-13 knots.  
    05.55   Enemy steers 220°, runs 12 knots.  Considered a large freighter of 6-7000 GRT.  
    06.30   At Action Stations.  
        Intend to shoot a two fan from the bow tubes, because shooting range will not be less than 3000 meters due to the bright moonlight.  
    06.41 E 1-2, Sea 1, 3/10, Vis. good, moonlit night Ran in for bow approach.  Due to failure of the bearing transmitter from the UZO to the torpedo data computer must shoot with fixed angle.  
        Steamer lies very high out, seems empty.  I let depth 2 meters be set without any concern in the calm sea.  
           
Sun and Moon Data 17.02.43
Sun and Moon Data 18.02.43
 
- 27 -
 
           
           
           
    continued      
    18.02.43      
    06.59   Two-fan from tubes I and IV.  
        Fixed angle 0°, target speed 12 knots, target angle left 80°, range 3000 meters, depth 2 meters.   
        Immediately after leaving the tubes both torpedoes broke the surface, then again went deep, emerged once again, and so on. Fan passed behind, passing the steamer's wake both torpedoes emerged one more time.  Fan missed because the torpedoes lost speed by jumping out.  So a mess.  This results only from the depth 2 meters, despite the calmest sea.  
        Steamer has not noticed, also the steamer still doesn't notice when after 10 minutes running time both torpedoes detonate at end of run.  It is a modern freighter, like the American type C 2, estimated 8000 GRT.  It is larger and longer then I first assumed.  
    07.15   New maneuver ahead.  
    08.00 Central Atlantic  FJ 8577 The moon sets.  I can get closer.  Intend a single shot from the bow tubes.  
      E 1, Sea 0-1, 4/10, Vis. good, medium-bright night  
    08.03   Turn for bow shot.  This time depth 3 meters.  
    08.05   Shot from tube III.  
        Fixed angle 0°, target angle left 110°, target speed 13 knots, range 1000 meters, depth 3 meters.  
    08.06   After 1 minute 6 seconds running time hit in foreship under the forward mast.  High explosion column, Steamer settles deeper forward, turns off to starboard and stops.  A part of the crew takes to the boats.  
    08.13   Steamer transmits on the 600-meter wave with a shaky hand:  sss o sss o de pulp pulp pulp lat 12°28' long 37°51'.  
    08.15   Steamer gives no indications of sinking.  Decide on a coup de grâce.  
    08.19   Coup de grâce from tube V.  
        After 49.5 seconds running time hit at the forward edge of the bridge.  Again a high explosion column.  Steamer settles again a bit deeper.  
    08.30   Steamer foreship is broken off and sunk.  The aftership however including the bridge to the stern floats.  Offers an amazing picture.  I decide on another coup de grâce.   
    08.35   Coup de grâce from tube VI.  
        After 35 seconds running time hit at the after edge of the bridge.  High explosion column.  The after part of the steamer sinks slowly.  
           
           
           
           
Sun and Moon Data 18.02.43
 
- 28 -
 
           
           
           
    continue      
    18.02.43      
    08.43                           FJ 8577 The after part of the steamer sinks over the stern, the location of fracture standing steeply upwards.  
    08.45   Ran off.  
    09.07   Dived.  
    12.00 Central Atlantic  FJ 8579 Day's run:  Surfaced 88 nm, Submerged 36 nm.  
    16.00            "             FL 8582    
    20.00            "             FL 8567    
    22.40   Surfaced.  
        Intend to set off to inspect and repair the outer tube door of tube II, which had been reported out of service and leaking the after the attack in the morning.  
    22.50   Difference between dead reckoning and actual position after a navigation fix:  50°T, 8 nm.  
                                                       
    19.02.43      
    00.00 Central Atlantic  FJ 8641    
      E 1-2, Sea 1, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    02.45                           FJ 8651 Horizontal detection on 129 cm.  Initially faint, then steady tone, swells quickly to volume 5.  Occasionally interrupted.  
    02.48   Dived.  
    04.00 Central Atlantic  FJ 8652    
    05.13   Surfaced.  
    08.00 Central Atlantic  FJ 8637    
      E 2, Sea 1, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    08.45   Difference between dead reckoning and actual position after a navigation fix:  265°T, 9 nm.  
    09.14   Dived.  
    12.00 Central Atlantic  FJ 8639 Day's run:  Surfaced 46 nm, Submerged 45 nm.  
    16.00            "             FJ 9414    
    17.27 - 17.52   Boat ventilated.  
    20.00            "             FJ 9416    
    22.27   Surfaced.  
    22.36   Difference between dead reckoning and actual position after a navigation fix:  50°T, 4.5 nm.  
                                                       
           
Sun and Moon Data 18.02.43
Sun and Moon Data 19.02.43
 
- 29 -
 
           
           
           
           
    20.02.43      
    00.00 Central Atlantic  FJ 9422    
      ENE 2, Sea 1, 4/10, Vis. good, moonlit night    
    01.00   Incoming Radio Message 0950/19/312:  
        "Klausen" and "Wissmann" report situation immediately.  
        Must first complete the repair of the outer tube door.  
    04.00 Central Atlantic  FJ 9199    
      E 3, Sea 2, 5/10, Vis. good, moonlit night Considering the impression of the first 8 days the following situation report was prepared:  
    05.15   Outgoing Radio Message 0517/20/:  
        Up to now 8 days in the operations area, only occasional escorted and unescorted independents proceeding along the 200-meter line.  Neutral traffic further offset.  Exact situation still not determined.  18 February FJ 8577 modern freighter 8000 GRT, 220°, 13 knots, sunk.  Heavy day land-based air, sometimes continuous air, night air with detection initially after sinking.  10 + 8 torpedoes, 125 cbm, FJ 9199, set off for outer tube door repair.  All naval squares.  
                                                           - Wissmann -  
    07.30   Inspection of the outer tube door of tube II showed that the outer tube door linkage is probably broken in main ballast tank 8.  Tube II therefore out of service.  It was attempted to force closed the outer tube door fairing from the outside but without success.  
    08.00 Central Atlantic  FJ 9196    
      E 2, Sea 2, 8/10, Vis. good, moonlit night, no marine phosphorescence    
    09.30   Since 07.40 hours continually attempted to send the situation report, nothing heard from the Communications Center.  
    09.40   Dived.  
        Intend to continue work on the outer tube door the following night.  Because I got into severe danger on the last patrol because of a leaking outer tube door, I think it is very important to eliminate this risk factor.  
    12.00 Central Atlantic  FJ 9169 Day's run:  Surfaced 58 nm, Submerged 32 nm.  
    16.00            "             FJ 9244    
    18.01 - 18.17   Boat ventilated.  
    20.00            "             FJ 9245    
           
           
           
Sun and Moon Data 20.02.43
 
- 30 -
 
           
           
           
           
    20.02.43      
    22.21   Surfaced.  
    22.30   Difference between dead reckoning and actual position after a navigation fix:  290°T, 12 nm.  
                                                       
    21.02.43      
    00.00 Central Atlantic  FJ 9244 Work on the outer tube door for tube II is again underway.  
      E 2-3, Sea 1-2, 3/10, Vis. good, moonlit night    
    03.35   Outgoing Radio Message 03.37/21/:  
        (Wording same as the day before with corrected position and fuel inventory)  
    04.00 Central Atlantic FJ 9162    
      E 3, Sea 2-3, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    07.00   Work on the outer tube door fairing completed successfully,  Outer tube door is tight.  
    07.24   Situation report sent and apparently heard.  
    08.00 Central Atlantic  FJ 9152    
      E 3, Sea 2-3, 2/10, Vis. good, moonlit night    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  272°T, 20 nm.  
    09.37   Dived.  
        Intend to go to the coast again.  
    12.00 Central Atlantic  FJ 9118 Day's run:  Surfaced 51 nm, Submerged 26 nm.  
    16.00            "             FJ 8339    
    20.00            "             FJ 8338    
    22.20   Surfaced.  
    22.25   Difference between dead reckoning and actual position after a navigation fix:  74°T, 10 nm.  
        Intend some days in the northern part of square FJ on the 200-meter line with E-W courses back and forth in position.  Suspect NE-SW steering traffic there.  
                                                       
    22.02.43      
    00.00 Central Atlantic  FJ 8325    
      E 1, Sea 0-1, 9/10, Vis. good, moonlit night, no marine phosphorescence    
           
Sun and Moon Data 20.02.43
Sun and Moon Data 21.02.43
Sun and Moon Data 22.02.43
 
- 31 -
 
           
           
           
    continued      
    22.02.43      
    04.00 Central Atlantic  FJ 8315    
      E 2, Sea 1-2, 2/10, Vis. good, moonlit night    
    08.00 Central Atlantic  FJ 8311    
      E 2, Sea 1-2, 4/10, Vis. good, moonlit night    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  225°T, 5 nm.  
    09.44   Dived.  
    12.00 Central Atlantic  FJ 8312 Day's run:  Surfaced 61 nm, Submerged 27 nm.  
    16.00            "             FJ 8316    
    20.00            "             FJ 8324    
    22.37   Surfaced.  
                                                       
    23.02.43      
    00.00 Central Atlantic  FJ 8326    
      E 1-2, Sea 1, 3/10, Vis. good, moonlit night, no marine phosphorescence    
    03.08   Difference between dead reckoning and actual position after a navigation fix:  43°T, 3.5 nm.  
    04.00 Central Atlantic  FJ 5967    
      E 2, Sea 1, 5/10, Vis. good, moonlit night    
    08.00 Central Atlantic  FJ 5991    
      E 3, Sea 2, 8/10, Vis. good, moonlit night    
    08.42   Difference between dead reckoning and actual position after a navigation fix:  176°T, 5 nm.  
    09.26   Dived.  
    12.00 Central Atlantic  FJ 5992 Day's run:  Surfaced 63 nm, Submerged 26 nm.  
    16.00            "             FJ 5969    
    20.00            "             FJ 6748    
    22.15   Surfaced.  
    22.20   Difference between dead reckoning and actual position after a navigation fix:  45°T, 10 nm.  
                                                       
    24.02.43      
    00.00 Central Atlantic  FJ 6748    
      ESE 2, Sea 1, 5/10, Vis. good, moonlit night, faint marine phosphorescence    
           
           
           
Sun and Moon Data 22.02.43
Sun and Moon Data 23.02.43
Sun and Moon Data 24.02.43
 
- 32 -
 
           
           
           
    continued      
    24.02.43      
    04.00 Central Atlantic  FJ 5969    
      ESE 2, Sea 1, 4/10, Vis. good, moonlit night    
    05.45                          FJ 5993 Shadow in sight ahead to starboard bearing 30°R (160°T).  Comes quickly out and shifts quickly to port.  
    05.58   Turned behind, apparently large, very fast vessel.  Distance 5 nm, was bigger.  
    06.00   Went to "AK".  
        Enemy steers general course 40° and zig zags every 10 minutes 30° to each side with stubborn regularity.  Enemy runs very fast.  
    07.00   Can not get closer with "AK" although I do not take the zig zags and run on the general course behind the enemy.  On the contrary, the range gets bigger.  
    07.05   Hunt broken off due to hopelessness.  
    07.10   Enemy out of sight.  By plotting enemy runs at 20 knots.  
    08.00 Central Atlantic  FJ 6772    
      E 1-2, Sea 1, 3/10, Vis. good, moonlit night    
    08.55   Difference between dead reckoning and actual position after a navigation fix:  253°T, 8 nm.  
    09.31   Dived.  
    12.00 Central Atlantic  FJ 5939 Day's run:  Surfaced 83 nm, Submerged 35 nm.  
    16.00            "             FJ 8331    
    20.00            "             FJ 8326    
    22.11   Surfaced.  
    22.20   Difference between dead reckoning and actual position after a navigation fix:  265°T, 8 nm.  
                                                       
    25.02.43      
    00.00 Central Atlantic  FJ 8228    
      E 1, Sea 0-1, 4/10, Vis. good, medium-bright night, faint marine phosphorescence    
    00.45   Fu.M.B. out of service, cable broken, repaired.  
    03.00   Incoming Radio Message 1830/24/324:  
        1.  . . . .  
        2.  . . . .  
        3.  "Wissmann" on return transit expect supply if necessary.  
           
           
Sun and Moon Data 24.02.43
Sun and Moon Data 25.02.43
 
- 33 -
 
           
           
           
    continued      
    25.02.43      
    04.00 Central Atlantic  FJ 8346    
      E 2, Sea 1, 2/10, Vis. good, bright moonlit night    
    08.00 Central Atlantic  FJ 8374    
      E 2, Sea 1, 4/10, Vis. good, moonlit night    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  255°T, 5 nm.  
    09.32   Dived.  
    12.00 Central Atlantic  FJ 8532 Day's run:  Surfaced 65 nm, Submerged 29 nm.  
    16.00            "             FJ 8534    
    20.00            "             FJ 8529    
    22.20   Surfaced.  
    22.24   Difference between dead reckoning and actual position after a navigation fix:  150°T, 3 nm.  
                                                       
    26.02.43      
    00.00 Central Atlantic  FJ 8558    
      ESE 2, Sea 1, 1/10, Vis. good, marine phosphorescence    
    04.00 Central Atlantic  FJ 8571    
      E 2, Sea 1, 5/10, Vis. good, moonlit night, no marine phosphorescence    
    05.38                          FJ 8493 Shadow astern bearing 185°R, 95°T.  
    05.40   Turned towards.  Shadow comes quickly out.  Vessel is small, slender, short forecastle, high bridge, long flat aftership, probably a destroyer or gun boat.  
    06.02   Enemy steers 230-240°, runs 12 knots.  Vessel is a destroyer or gunboat, now clearly recognized.  (Type "MATTE GROSSO")  
    06.16   Turned away, ran off.  
      [Weyer's Taschenbuch der Kriegesflotten] Consider attacking inappropriate, because prospects for success are very slight due to the low draft (according to Weyer 2.3 meters).  Besides, my orders are to destroy the enemy's commercial shipping capacity.   In my opinion, an attack on a destroyer can only be considered if the shot opportunity is very favorable or if the destroyer complicates an attack on merchant ships.  In this case it was not worthwhile.  
    08.00 Central Atlantic  FJ 8495    
      E 2, Sea 1-2, 6/10, Vis. good, moonlit night, no marine phosphorescence    
           
Sun and Moon Data 25.02.43
Sun and Moon Data 26.02.43
 
- 34 -
 
           
           
           
    continued      
    26.02.43      
    09.33   Dived.  
        Intend to go further to the south as far as Bahia.  
    12.00 Central Atlantic  FJ 8732 Day's run:  Surfaced 82 nm, Submerged 29 nm.  
    16.00            "             FJ 8736    
    20.00            "             FJ 8814    
    22.18   Surfaced.  
    22.25   Difference between dead reckoning and actual position after a navigation fix:  225°T, 4 nm.  
                                                       
    27.02.43      
    00.00 Central Atlantic  FJ 8762    
      E 2, Sea 1, 6/10, Vis. medium, medium-bright night, faint marine phosphorescence    
    00.25   Fu.M.B. out of service, cable broken, repaired.  
    04.00 Central Atlantic  FJ 8726    
      E 1, Sea 0-1, 6/10, Vis. good, moonlit night, faint marine phosphorescence    
    08.00 Central Atlantic  FJ 8731    
      ESE 1-2, Sea 1, overcast, Vis. medium-good, medium-bright night    
    09.20   Dived.  
        Intend some days back and forth in position off Bahia [Salvador].  
    09.50 - 10.05   At periscope depth, nothing seen.  
    12.00 Central Atlantic  FJ 8726 Day's run:  Surfaced 60 nm, Submerged 32 nm.  
    12.30 - 12.40   At periscope depth, starboard ahead a three-masted gaff schooner, otherwise nothing.  
    16.00 - 16.15            "             FJ 8728 At periscope depth, nothing seen.  
    18.40 - 18.50   At periscope depth, to starboard now two three-masted schooners, one ahead to starboard, one astern to starboard, otherwise nothing  
    20.00            "             FJ 8743 At periscope depth, now 3 three-masted gaff schooners, all to starboard, otherwise nothing  
    22.20   Surfaced.  
    22.48                          FJ 8748 Horizontally polarized detection at 110 cm.  Dived.  Either the sailing vessels were guards with gear or it was a land detection  
                                                       
           
Sun and Moon Data 26.02.43
Sun and Moon Data 27.02.43
 
- 35 -
 
           
           
           
           
    28.02.43      
    00.00 Central Atlantic  FJ 8748    
    00.17 ESE 1-2, Sea 1, 2/10, Vis. good, faint marine phosphorescence and summer lightening Surfaced.  
    04.00 Central Atlantic  FJ 8751 Off Bahia, no traffic.  
      ESE 1-2, Sea 1, 4/10, Vis. good, faint marine phosphorescence and summer lightening    
    07.15   Fu.M.B. out of service, cable broken, repaired.  
    08.00 Central Atlantic  FJ 8723    
      ESE 1-2, Sea 1, 6/10, Vis. changing, moonlit, faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  145°T, 5.5 nm.  
    09.15   Dived.  
    12.00 Central Atlantic  FJ 8753 Day's run:  Surfaced 50 nm, Submerged 48 nm.  
    13.40                          FJ 8728 Propeller sounds ahead bearing 310°R, 270°T.  
    13.50   At periscope depth, to port ahead, bearing 305°R (265°T) two steamers, bow left 10°, range 6000 meters, further to starboard 1 destroyer, target angle 0°.  
        On looking more carefully several steamer masts distinguished: thus, a convoy running out of Bahia.  
    14.00   Convoy is still forming.  It still makes very low speed.  
        Because I am positioned directly off the harbor, I refrain from an immediate underwater attack in favor of a more promising night attack on the surface.  Holding contact or promptly finding the convoy again seems quite certain to me.  
    14.20   Run submerged ahead of the convoy which is still forming.  
    15.50   At periscope depth, convoy has formed, steers 90°, runs at 8 knots.  
    16.00 Central Atlantic  FJ 8729 Convoy shifts slowly ahead.  Attempt initially to maintain contact submerged.  
    16.50   At periscope depth, convoy continues to shift ahead.  I count about 18 ships and 5 patrol vessels.  1 steamer straggles.  
    18.00   At periscope depth, convoy slowly shifts ahead, slower than plotted so the straggler moves up.  Apparently the convoy waited on him.  
        Pursuit continues in the listening gear.  
    19.00   At periscope depth, quite thick smoke clouds are still seen, again somewhat shifted ahead.  
           
           
           
Sun and Moon Data 28.02.43
 
- 36 -
 
           
           
           
    continued      
    28.02.43      
    19.30   At periscope depth, an aircraft in sight over the convoy.  
    20.00 Central Atlantic  FJ 8738    
    20.30   Convoy is still clearly audible.  At periscope depth faint smoke clouds can still be seen.  
        Intend to surface at first in the evening twilight and then pursue from behind because of the expected continuous air.  Find the convoy with certainty and remain unnoticed.  
    20.55   Last sound bearing.  
    22.10   Surfaced, pursued.  Difference between dead reckoning and actual position after a navigation fix:  325°T, 3.5 nm.  
        The convoy has probably made a zig zag to the NE in the evening twilight, I intend initially to run to the position where the convoy should be.  Dive there to listen.  I will have caught up so much by then that I must hear it.  
                                                       
    01.03.43      
    00.00 Central Atlantic  FJ 8819    
      ESE 1, Sea 0-1, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    00.31   Dived to listen.  
    00.40   Perfect sound bearing 300°R, 30°T.  
    00.50   Surfaced, pursued in the direction of the sound bearing.  As I had assumed, the convoy has zig zagged to the NE.  
    02.40                          FJ 8597 Convoy in sight directly ahead.  
    03.00   Convoy is ahead of me in double line ahead, very widely separated, steers general course 30°, zig zags 20-30° to each side, so that he is sometimes in echelon and sometimes in double line ahead, runs at 8 knots.  Screen positioned ahead, behind and in the center.  
    03.25   At action stations.  
    04.00 Central Atlantic  FJ 8595 I count a total of 23 shadows.  Steamers are apparently unloaded, they lie very high out.  Because I still want to attack before moonrise, I decide to pursue the convoy from behind.  I am positioned astern to port of the convoy, no escort in the vicinity.  
      E 1, Sea 0-1, 2/10, Vis. good, medium-bright night, faint marine phosphorescence  
           
           
Sun and Moon Data 28.02.43
Sun and Moon Data 01.03.43
 
- 37 -
 
           
           
           
    continued      
    01.03.43      
    04.03   Run in for the first approach.  Intend a double shot from the bow tubes on a freighter of 6000 GRT, unloaded, that has just zigged favorably and then immediately turn for a double stern shot on a freighter of 7000 GRT, also unloaded.  Double shot, because the steamer is difficult to sink on the basis of experience.  On the basis of experience with depth 2 meters on 18 February I let depth 3 meters be set.  There is a very slight Trade Wind, Sea 1, very slight almost imperceptible swell.  Nevertheless set depth 3 meters, to prevent at all costs surface runner and springing out of the torpedo.  
    04.28   Double shot from tube I and IV.  
        Fixed angle 320°, target angle right 110°, target speed 8.5 knots, range 1500 meters, depth 3 meters.  
    04.29   Turned for stern shot.  
    04.33   Double shot from tubes V and VI.  
        Fixed angle 180°, target angle left 80°, target speed 8.5 knots, range 1500 meters, depth 3 meters.  
        Also these torpedoes do not hit.  One from each salvo sprang out again.  
        It is incomprehensible, misses are not possible with the exact shooting data.  Therefore the torpedoes must have under run the target.   If only I had torpedoes with Pi 2.  
    04.59   Run with the convoy, no escort vessel disturbs me.  Reloaded torpedo tubes.  
    05.36   Ran in for second approach on the 7000 GRT freighter, to me it seems to lie deeper than others nearby.  I still let depth 3 meters be set.  In complete calm I can approach to a good shooting position.  Because, meanwhile, the moon has risen, I must remain a little bit further away.  
    06.13   Double shot from tube I and IV.  
        Fixed angle 0°, target angle left 110°, target speed 8 knots, range 3000 meters, depth 3 meters.  
        This time the torpedoes apparently run correctly. Nevertheless nothing happens.  Miss as a result of target angle and incorrect speed estimate is ruled out.  Torpedoes must have passed below again.  Must I watch while this big opportunity slowly passes unused?  
        I decide to take a single shot with depth 2 meters on the same steamer with the same shooting data.  
           
           
Sun and Moon Data 01.03.43
 
- 38 -
 
           
           
           
    continued      
    01.03.43      
    06.34   Run in for a third approach.  
    06.52   Shot from tube VI.  
        Fixed angle 180°, target angle left 90°, target speed 8 knots, range 2000 meters, depth 2 meters.  
        Torpedo again springs out several times, however hits after 2 minutes 39 seconds in the aftership.  Heavy detonation cloud.  Steamer remains on an even keel and shoots red light rockets in my direction.  Rear destroyer comes on below a thick smoke cloud towards me.  Convoy zig zags several tens of degrees away.  
    07.00   Evaded on the dark horizon.  
    07.15   Destroyer gives up and stops.  Still ran somewhat further away.  
    07.25   Again turned behind the convoy.  Still have 3 torpedoes below deck.  Should I still try an approach on the convoy or instead remain with the wounded steamer and sink him completely?  
    07.35   Defeated and and affected by the just experienced hours I decide on the latter.  I want to sink at least one steamer, because only a sunken steamer is destroyed and a success in the U-boat war.  
        The destroyer still stands back and forth with the steamer.  
    07.55   Dived.  Because in the meanwhile, the moonlight has gotten very light intend to run in submerged and to give the coup de grâce at dawn, in the process to fire at the destroyer at a favorable opportunity.  
    08.00 Central Atlantic  FJ 8566    
      E 1, Sea 0-1, 3/10, Vis. good, moonlit night    
    08.30   Strong, destroyer propeller sounds to port growing louder.   Sound bearing stands.  Sounds shift very slowly astern, stop abruptly.  
    09.30   At periscope depth.  Steamer still lies there, destroyer can not be seen.  Suspect he is on the other side of the steamer.  Go around the steamer's stern.  
    09.53   At periscope depth.  Also on the other side of the steamer there is no destroyer.  Probably he has run off behind the convoy.   
        Ran in for a coup de grâce.  
           
           
           
Sun and Moon Data 01.03.43
 
- 39 -
 
           
           
           
    continued      
    01.03.43      
    10.20   At periscope depth.  While turning for the coup de grâce flying boat in sight over the steamer.  This is all I need.  Went deep and ran off a little bit.  
    10.50   At periscope depth.  Flying boat is no longer seen.  
    11.00   Again ran in for coup de grâce.  
    12.00 Central Atlantic  FJ 8566 Day's run:  Surfaced 106 nm, Submerged 43 nm.  
    12.15   Coup de grâce from tube III.  
        Shooting angle 0°, target speed 0 knots, range 1500 meters, depth 2 meters.  
        After 2 minutes 33 seconds hit at the after edge of the bridge.  The steamer does not move.  The bridge has collapsed.  
        I can not afford to wait any longer, the steamer must go.  
    12.21   Coup de grâce from tube I.  
        Shooting angle 0°, target speed 0 knots, range 1500 meters, depth 2 meters.  
        After 2 minutes 5 seconds hit at the forward edge of the bridge.  Steamer starts to sink slowly.  
        Also both torpedoes were followed by me in the periscope, both were observed jumping out several times.  
    12.25   Steamer sinks over the sternpost.  
        Ran off.  
        This paltry result from a night in a convoy with an untrained screen is very crushing.  
        Intend to remain submerged for the rest of the day to reload upper deck torpedoes the following night and then pursue from behind the convoy. By plotting I can catch him if I am not forced to submerge too often, before he turns to the NW in FC70.  
    16.00 Central Atlantic  FJ 8645    
    20.00            "             FJ 8651    
    22.12   Surfaced.  
    22.16   Difference between dead reckoning and actual position after a navigation fix:  350°T, 8 nm.  
                                                       
    02.03.43      
    00.00 Central Atlantic  FJ 8636 Begin to reload.  
      ESE 1, Sea 0-1, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FJ 8636    
      ESE 1, Sea 0-1, 1/10, Vis. good, medium-bright night    
           
Sun and Moon Data 01.03.43
Sun and Moon Data 02.03.43
 
- 40 -
 
           
           
           
    continued      
    02.03.43      
    05.30   Outgoing Radio Message 0535/2/190/378:  
        1.  28 February 14.00 hours convoy FJ 8719 course 0°, 8 knots, 18 empty steamers, 5 escort vessels.  03.00 hours convoy FJ 8597 course 30°, 07.00 hours FJ 8566 course NE.  1 freighter 7000 GRT sunk.  FJ 9411, 1 + 8 torpedoes, loading, 100 cbm, intend to pursue, all naval squares.  
        2.  Officer only.  Of 14 Etos 8 missed due to irregular depth keeping.  Shooting data perfect.  Set depth 2 and 3 meters undependable with Sea 1 and very slight swell on 6-8000 GRT freighter, unloaded or in ballast.  Torpedoes jumped out several times.  Believe thereby under ran and loss of speed.  Depth keeping apparatus normal during work through.  
    08.00 Central Atlantic  FJ 8636    
      E 1, Sea 0-1, 3/10, Vis. good, moonlit, faint marine phosphorescence    
    08.24   Radio Message sent and understood.  
    08.30   Reloading completed.  
    08.55   Difference between dead reckoning and actual position after a navigation fix:  120°T, 10 nm.  
    09.20 - 10.20   Test dive.  
        Ran behind the convoy at 2 x HF.  
    11.18                          FJ 9412 "Crash dive" for aircraft in approach.  
        Have been seen, must therefore remain submerged longer.  
    12.00 Central Atlantic  FJ 9412 Day's run:  Surfaced 41 nm, Submerged 43 nm.  
    14.34   Surfaced.  Again took up the chase.  
    15.45                          FJ 9188 "Crash dive" for aircraft.  
        Getting ahead with this heavy air is impossible.  An examination of the chart shows that I can no longer reach the convoy before it gets to the corner in FC 70.  Broke off.  
        The greatest opportunity of this patrol has passed by.  
    16.00 Central Atlantic  FJ 9188    
    20.00            "             FJ 9186    
    22.09   Surfaced.  
    22.20   Difference between dead reckoning and actual position after a navigation fix:  30°T, 3 nm.  
    23.05   Outgoing Radio Message 2305/2/383:  
        1.  Forced to submerge by continuous air.  Pursuit hopeless, broken off.  
        2.  7 days in FJ 80,  except for convoy no traffic.  Slight seas, off main harbor detection.  
        3.  Day heavy, regular air, also set off.  
        4.  FJ 9192, going to FJ 30, naval squares.  Am missing Serial No. 353 of 25 February, 306, 15, 18 of 26 February and 346 of 27 February.  
                                                     - Wissmann -  
           
Sun and Moon Data 02.03.43
 
- 41 -
 
           
           
           
           
    03.03.43      
    00.00 Central Atlantic  FJ 9167    
      NE 1, Sea 0-1, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FJ 9122    
      NE 1-2, Sea 1, 2/10, Vis. good, faint marine phosphorescence    
    08.00 Central Atlantic  FJ 6751    
      NE 1-2, Sea 1, 4/10, Vis. good, medium-bright night. faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  325°T, 8 nm.  
    09.33   Dived.  
    12.00 Central Atlantic  FJ 6727 Day's run:  Surfaced 97 nm, Submerged 27 nm.  
    16.00            "             FJ 6725    
    20.00            "             FJ 6723    
    22.04   Surfaced.  
                                                       
    04.03.43      
    00.00 Central Atlantic  FJ 6499    
      ESE 2, Sea 1-2, 8/10, Vis. good, dark night, marine phosphorescence    
    04.00 Central Atlantic  FJ 6557    
      E 2, Sea 1, 4/10, Vis. good, medium-bright, marine phosphorescence    
    08.00 Central Atlantic  FJ 6562    
      E 2, Sea 1, 2/10, Vis. good, medium-bright night, marine phosphorescence    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  120°T, 3 nm.  
    09.29   Dived.  
    12.00 Central Atlantic  FJ 6536 Day's run:  Surfaced 76 nm, Submerged 33 nm.  
    16.00            "             FJ 6533    
    20.00            "             FJ 6374    
    22.03   Surfaced.  
    22.10   Difference between dead reckoning and actual position after a navigation fix:  40°T, 6 nm.  
                                                       
    05.03.43      
    00.00 Central Atlantic  FJ 6265    
      E 2, Sea 1, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
           
           
           
           
Sun and Moon Data 03.03.43
Sun and Moon Data 04.03.43
Sun and Moon Data 05.03.43
 
- 42 -
 
           
           
           
    continued      
    05.03.43      
    01.10                          FJ 6265 Light in sight to starboard ahead, 25°R, 335°T.  Turned towards it.  A brightly lit steamer.  
    02.00   It is an Argentinean freighter, 5-6000 GRT, course 180°, speed 10 knots, perfect markings.  
    02.05   Incoming Radio Message 1647/4/395:  
        To "Wissmann":  Italian boat sinkings:  1st on 2 March Brazilian in FR 43 course 200°, 12 knots.  2nd on 3 March large American in FQ 23, course 230°, 16 knots.  
        He was lucky.  
    04.00 Central Atlantic  FJ 6225    
      E 2, Sea 1, 6/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FJ 3899    
      E 2-3, Sea 2, 5/10, Vis. good, faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  280°T, 4 nm.  
    09.16   Dived.  
    09.30                          FJ 3896 Propeller sounds to starboard ahead, 35°R, 95°T.  
        Sounds shift slowly ahead.  
    10.00   At periscope depth nothing seen.
Sounds shift further ahead.
 
    10.30   At periscope depth nothing seen.  
    10.41   Surfaced.  Smoke cloud ahead, 55°T.  Turned to run towards. Vessel shifts out to port, very slowly.  
    11.40   Smoke stack and mast are out.  Vessel has bow left, broad target angle, steers therefore a northerly course.  
    11.49   Vessel has changed course, is not bow right, steering southerly course.  
    12.00 Central Atlantic  FJ 3972 Day's run:  Surfaced 103 nm, Submerged 27 nm.  
      E 2-3, Sea 2, 3/10, Vis. good    
    12.05   Vessel has changed course again, now steers an easterly course.  Smokes heavily.  Vessel has a very thin smokestack and a very high mast.  
    12.33   Vessel has changed bows again, lies now on a SW course sharply towards me.  
    12.36   Vessel is out up to the bridge.  He is a patrol vessel, small, fishing trawler type vessel.  
    12.38   Dived.  
    12.45   At periscope depth.  Smoke feather and quite faintly the mast tips are distinguished.  
    13.00   Vessel does not come closer.  
           
           
           
           
Sun and Moon Data 05.03.43
 
- 43 -
 
           
           
           
    continued      
    05.03.43      
    13.15   Propeller sounds are again faint and do not shift.  At periscope depth only a faint smoke haze can be seen.  Therefore moved further off.  Afterwards back and forth in position.  
    16.00 Central Atlantic  FJ 3943    
    20.00            "             FJ 3916    
    21.58   Surfaced.  
    22.05   Difference between dead reckoning and actual position after a navigation fix:  35°T, 5 nm.  
                                                       
    06.03.43      
    00.00 Central Atlantic  FJ 3681    
      ENE 2, Sea 1, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FJ 3628    
      ENE 2, Sea 1, 7/10, Vis. good, marine phosphorescence    
    08.00 Central Atlantic  FJ 3383    
      ENE 2, Sea 1, 5/10, Vis. medium, medium-bright night, marine phosphorescence    
    09.28 - 10.31   Test dive.  
        Intend to try once more to remain on the surface to search.  
    10.54                          FJ 3356 "Crash dive" for 2 aircraft to port astern in approach.  
        Remained submerged.  
    12.00 Central Atlantic  FJ 3356 Day's run:  Surfaced 101 nm, Submerged 34 nm.  
    16.00            "             FJ 3355    
    20.00            "             FJ 3351    
    21.55   Surfaced.  
                                                       
    07.03.43      
    00.00 Central Atlantic  FJ 3239    
      Wind calm, Sea 0, 1/10, Vis. good, ,marine phosphorescence    
    00.09   Light in sight to starboard ahead bearing 30°R, 320°T.  Turned towards.  A brightly lit steamer.  
    01.00   It is the Argentinean tanker of "13 December", course 180°, speed 12 knots.  
           
Sun and Moon Data 05.03.43
Sun and Moon Data 06.03.43
Sun and Moon Data 07.03.43
 
- 44 -
 
           
           
           
    continued      
    07.03.43      
    02.55                          FJ 3225 Illuminated aircraft to port ahead passing by to starboard astern.  
    04.00 Central Atlantic  FJ 3213    
      E 1-2, Sea 0-1, 2/10, medium-bright night, Vis. medium, faint marine phosphorescence    
    08.00 Central Atlantic  FC 7867    
      E 1-2, Sea 0-1, 1/10, Vis. good, medium-bright night, faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  315°T, 6 nm.  
    09.26   Dived.  
        Intend to go to FC 75 and spend several days there back and forth in position.  
    12.00 Central Atlantic  FC 7863 Day's run:  Surfaced 100 nm, Submerged 24 nm.  
    16.00            "             FC 7917    
    20.00            "             FC7839    
    21.58   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  163°T, 1 nm.  
                                                       
    08.03.43      
    00.00 Central Atlantic  FC 7828    
      E 1, Sea 0-1, 2/10, Vis. medium to good, medium-bright night, faint marine phosphorescence    
    02.15   Fu.M.B. out of service, cable broken, repaired.  
    04.00 Central Atlantic  FC 7815    
      E 2, Sea 1, 4/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FC 7584    
      E 1-2, Sea 1, 2/10, Vis. good, faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  320°T, 5 nm.  
    09.26   Dived.  
    12.00 Central Atlantic  FC 7584 Day's run:  Surfaced 76 nm, Submerged 34 nm.  
    16.00            "             FC 7578    
    20.00            "             FC 7496    
    21.59   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  310°T, 7 nm.  
                                                       
           
Sun and Moon Data 07.03.43
Sun and Moon Data 08.03.43
 
- 45 -
 
           
           
           
           
    09.03.43 Central Atlantic  FC 7463 I very much hope to find something here at the corner where traffic must pass.  
      E 2, Sea 1, 2/10, Vis. good, medium-bright night, heavy marine phosphorescence  
    04.00 Central Atlantic  FC 7496    
      ESE 2, Sea 1-2, 2/10, Vis. good, faint marine phosphorescence, summer lightening    
    08.00 Central Atlantic  FC 7493    
      ESE 2, Sea 1-2, 3/10, Vis. medium, medium-bright night, faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  280°T, 12 nm.  
    09.15                          FC 7493 Vessel in sight to starboard astern, bearing 150°R, 324°T sharp target angle.  
    09.22   Dived.  
    09.26   At periscope depth, tanker in sight, bow left 40°, range 6000 meters.  Enemy course 150°, speed 9 knots.  
    09.50   To Action Stations.  
    09.55   Tanker is again a neutral.  It is the Argentinean tanker "JUVENAL"  
    10.16   Dismissed from Action Stations.  
    10.34                          FC 7493 New sound bearing 254°R, 68°T.  
        At periscope depth, freighter in sight, bow left 85°, range 5000 meters, course 310°, 10 knots.  
    10.45   Again it is an Argentinean.  
    12.00 Central Atlantic  FC 7493 Day's run:  Surfaced 72 nm, Submerged 38 nm.  
    14.02                           FC 7496 Sound bearing 350°R, 160°T.  At periscope depth, tanker in sight.  
    14.20   Argentinean tanker ("FLORENTINO AMEGHINO")  
        The third neutral in one day!  
    16.00 Central Atlantic  FC 7499    
    20.00            "             FC 7577    
    21.59   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  145°T, 3 nm.  
    22.20   Fu.M.B. out of service, cable broken, repaired.  
                                                       
           
           
           
           
Sun and Moon Data 09.03.43
 
- 46 -
 
           
           
           
           
    10.03.43      
    00.00 Central Atlantic  FC 7573    
      ESE 2-3, Sea 2, 1/10, Vis. good    
    04.00 Central Atlantic  FC 7564    
      SE 2-3, Sea 1-2, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FC 7573    
      SE 2-3, Sea 1-2, 3/10, Vis. good, medium-bright night, marine phosphorescence    
    08.54                          FC 7575 Horizontally polarized detection on 139 cm.  
    08.56   Dived.  
    12.00 Central Atlantic  FC 7573 Day's run:  Surfaced 66 nm, Submerged 29 nm.  
    16.00            "             FC 7581    
    20.00            "             FC 7581    
    21.55   Surfaced.  
                                                       
    11.03.43      
    00.00 Central Atlantic  FC 7578    
      E 2-3, Sea 1-2, 2/10, Vis. medium to good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FC 7578    
      E 2-3, Sea 1-2, 4/10, Vis. good, medium-bright night, marine phosphorescence    
    08.00 Central Atlantic  FC 7559    
      E 2-3, Sea 1-2, 4/10, Vis. good, heavy marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  20°T, 5 nm.  
    09.24   Dived.  
    12.00 Central Atlantic  FC 7582 Day's run:  Surfaced 82 nm, Submerged 28 nm.  
    16.00            "             FC 7573    
    20.00            "             FC 7575    
    22.01   Surfaced.  Difference between dead reckoning and actual position after a navigation fix:  302°T, 3 nm.  
                                                       
           
Sun and Moon Data 10.03.43
Sun and Moon Data 11.03.43
 
- 47 -
 
           
           
           
           
    12.03.43      
    00.00 Central Atlantic  FC 7575    
      E 2, Sea 1, 5/10, Vis. good, medium-bright night, faint marine phosphorescence, summer lightening    
    04.00 Central Atlantic  FC 7555    
      E 2-3, Sea 1-2, 5/10, Vis. good, faint marine phosphorescence    
    08.00 Central Atlantic  FC 7535    
      E 2-3, Sea 1-2, 5/10, Vis. medium to good    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  230°T, 4 nm.  
    09.28   Dived.  
    12.00 Central Atlantic  FC 7529 Day's run:  Surfaced 68 nm, Submerged 42 nm.  
    16.00            "             FC 7543    
    20.00            "             FC 7545    
    21.59   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  269°T, 3 nm.  
    23.00   Fu.M.B. out of service, cable broken, repaired.  
                                                       
    13.03.43      
    00.00 Central Atlantic  FC 7574    
      E 2, Sea 1-2, 3/10, Vis. good, rain shower, moonlit night    
    04.00 Central Atlantic  FC 7819    
      E 2, Sea 1, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FC 7855    
      E 2-3, Sea 1-2, 7/10, Vis. good, rain showers    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  282°T, 6 nm.  
    08.55                          FC 7855 Shadow in sight, to starboard astern bearing 160°R, 290°T.  
        It is a steamer, comes out very quickly and was very large and pronounced.  Considered a modern freighter, about 7000 GRT, had bow right target angle 80°, thus steering 30°.  
        Because morning twilight has already begun, I run off.  Steamer is nearly completely out.  
    09.05   Steamer has zig zagged, apparently lies sharply towards me.  Because it is quickly getting light, I run further off.  Steamer runs at high speed.  
           
           
           
Sun and Moon Data 12.03.43
Sun and Moon Data 13.03.43
 
- 48 -
 
           
           
           
    continued      
    13.03.43      
    09.14   Steamer is suddenly out of sight.  Turn on a parallel course.  
        Apparently I had been directly on his NE zigzag, so that he did not approach just now, but has zig zagged away and, because he is very fast, he passed out of sight in his own diesel smoke, glimmering and unsteady air.  
    09.17   Pursued.  
    09.30   In the mean time it is become completely bright, visibility is very good, nevertheless nothing is seen of the steamer.  
    10.00   Because still nothing is seen, dived to listen.  
    10.10   Quite faint sound bearing to starboard ahead, true bearing NW.  
    10.15   Because the steamer is a fast runner, by plotting he runs at 15-17 knots, I do not take up his pursuit.  With the heavy air and my low speed excess there is no prospect of success.  
    12.00 Central Atlantic  FC 7852 Day's run:  Surfaced 75 nm, Submerged 37 nm.  
    16.00            "             FC 7858    
    20.00            "             FC 7882    
    22.00   Surfaced.  
                                                       
    14.03.43      
    00.00 Central Atlantic  FJ 3221    
      SE 3, Sea 2, 3/10, Vis. good, moonlit night    
    00.30   Incoming Radio Message 2101/13/120:  
        1.  . . . .  
        2.  "Wissmann", "Lauzemis", report situation, also "Piening" if noticed.  
        Because I am positioned directly off the coast, I can not transmit.  
    04.00 Central Atlantic  FJ 3251    
      E 3, Sea 2, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FJ 3283    
      E 3, Sea 2-3, 3/10, Vis. good, faint marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  258°T, 3 nm.  
           
           
           
           
Sun and Moon Data 13.03.43
Sun and Moon Data 14.03.43
 
- 49 -
 
           
           
           
    continued      
    14.03.43      
    09.25   Dived.  
    12.00 Central Atlantic  FJ 3294 Day's run:  Surfaced 57 nm, Submerged 30 nm.  
    16.00            "             FJ 3296    
    20.00            "             FJ 3374    
    21.56   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  125°T, 3.5 nm.  
                                                       
    15.03.43      
    00.00 Central Atlantic  FJ 3379 Incoming Radio Message 2105/14/354:  
      ESE 2, Sea 1, 4/10, Vis. good, moonlit night, no marine phosphorescence 1.  . . . .  
      2.  "Wissmann" report situation.  
      3.  . . . .  
        Because I have been asked to report two times I decide to send a Radio Message on alternate frequency.  
    01.15   Outgoing Radio Message 0114/15/:  
        1.  Since 5 March in FJ 30 and FC 70, focal point FC 75.  13 March FC 7855 independent course N, 16 knots, no success.  Otherwise only sometimes heavy Argentine traffic on S and NW courses, correct markings.  
        2.  Defense as before.  
        3.  FJ 3621, trade wind weather 4, 9 torpedoes, 75 cbm.  
                                                              - Wissmann -  
    04.00 Central Atlantic  FJ 3628    
      ESE 2-3, Sea 2, 4/10, Vis. good, bright moonlit night    
    05.04   Radio Message sent on alternate frequency, nothing heard.  
    05.23   Sent yet again, again not heard.  As a consequence:  
    07.09                          FJ 3649 Horizontally polarized detection on 140 cm.  
    07.10   Dived.  
        It is a real travesty that those who should hear me have not heard me, and those who should not hear me have heard me, despite alternate frequency.  
        Because while diving the Fu.M.B. cable was broken again, remained submerged.  
    08.00 Central Atlantic  FJ 3648    
           
Sun and Moon Data 14.03.43
Sun and Moon Data 15.03.43
 
- 50 -
 
           
           
           
    continued      
    15.03.43      
    12.00 Central Atlantic  FJ 3676 Day's run:  Surfaced 58 nm, Submerged 35 nm.  
    16.00            "             FJ 3921    
    20.00            "             FJ 3925    
    22.03   Surfaced.  Difference between dead reckoning and actual position after a navigation fix:  95°T, 8 nm.  
                                                       
    16.03.43      
    00.00 Central Atlantic  FJ 3955 Because I have been detected with certainty in the northern part of my operating area, I intend to return to FJ 80.  I will wait one more night to send the situation report, to set off somewhat to the south and to transmit.  
      ESE 2, Sea 1-2, 3/10, Vis. good, moonlit night, no marine phosphorescence  
    03.00   Incoming Radio Message 1839/15/392:  
        1.  "Nietzel" and "Wissmann" report situation.  
        2.  . . . .  
    04.00 Central Atlantic  FJ 6312    
      ESE 2, Sea 1, 2/10, Vis. good, moonlit night, faint marine phosphorescence    
    06.40                           FJ 6239 Light in sight to starboard ahead bearing 45°R, 265°T.  Turned towards.  It can only be an Argentinean.  
    07.40   It is indeed an Argentinean freighter again, 5-6000 GRT, course 20°, speed 10 knots.  
    07.50   Turned off.  
    08.00 Central Atlantic  FJ 6262    
      ESE 1-2, Sea 0-1, 1/10, Vis. good, medium-bright night, faint marine phosphorescence    
    09.23   Dived.  
    12.00 Central Atlantic  FJ 6282 Day's run:  Surfaced 97 nm, Submerged 35 nm.  
    16.00            "             FJ 6289    
    20.00            "             FJ 6526    
    21.56   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  174°T, 3 nm.  
                                                       
    17.03.43      
    00.00 Central Atlantic  FJ 6568    
      ESE 2, Sea 1, 2/10, Vis. good, moonlit night    
           
Sun and Moon Data 15.03.43
Sun and Moon Data 16.03.43
Sun and Moon Data 17.03.43
 
- 51 -
 
           
           
           
    continued      
    17.03.43      
    04.00 Central Atlantic  FJ 6911 Incoming Radio Message 2245/16/335:  
      E 2-3, Sea 1-2, 5/10, Vis. good, rain showers, moonlit night, faint marine phosphorescence 1.  "Lüdden" and "Fiedler" tonight report weather by Short Signal, "Hartenstein", "Piening" and "Wissmann" brief traffic report and position.  
      2.  . . . .  
        Will transmit now, transmission danger must be accepted.  
    05.10   Outgoing Radio Message 0514/17/:  
        Since 5 March in FJ 30 and FC 70, focal point FC 75.  13 March FC 7855 independent, course N, 16 knots, no success.  Otherwise only occasionally heavy Argentinean traffic on S and NW courses, correct markings.  Defense as before, multiple night air detections on 140 cm.  FJ 6911 trade wind weather 4, 9 torpedoes, 73 cbm, going to FJ 80.  
                                                              - Wissmann -  
    06.30   Radio Message sent and understood.  
    08.00 Central Atlantic  FJ 6944    
      ESE 1-2, Sea 1, 2/10, Vis. good, marine phosphorescence    
    09.02   Dived.  
    12.00 Central Atlantic  FJ 6868 Day's run:  Surfaced 81 nm, Submerged 36 nm.  
    16.00            "             FJ 6867    
    20.00            "             FJ 6883    
    21.57   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  174°T, 4 nm.  
                                                       
    18.03.43      
    00.00 Central Atlantic  FJ 9212    
      E 1-2, Sea 0-1, 4/10, Vis. good, moonlit night, no marine phosphorescence    
    00.44                          FJ 9215 Brief horizontally polarized detection on 140 cm, remained on the surface, no steady tone, no attack.  
    01.10   Fu.M.B. out of service, cable broken.  
    01.13   Dived, due to the acute air danger submerged during the cable repair.  
    01.52   Surfaced.  
    04.00 Central Atlantic  FJ 9137    
      E 1-2, Sea 0-1, 3/10, Vis. good, moonlit night    
           
           
Sun and Moon Data 17.03.43
Sun and Moon Data 18.03.43
 
- 52 -
 
           
           
           
    continued      
    18.03.43      
    08.00 Central Atlantic  FJ 9146    
      E 1-2, Sea 0-1, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.55   Difference between dead reckoning and actual position after a navigation fix:  310°T, 6 nm.  
    09.16   Dived.  
    12.00 Central Atlantic  FJ 9147 Day's run:  Surfaced 83 nm, Submerged 28 nm.  
    14.55                          FJ 8393 Propeller sounds bearing 93°R, 333°T.  
    15.10   At periscope depth, several smoke clouds, a patrol vessel mast in sight, shifting slowly to the south, therefore a southbound convoy.  
    15.33   Air escort over the convoy, flying boat (type Consolidated) turns toward me.  Went deep.  
    16.00 Central Atlantic  FJ 8392 Convoy plotted by sound bearings.  General course 230°, convoy speed 7-8 knots.  
    18.30   Sound bearings are fainter.  
        At periscope depth, nothing more seen.  
    19.30   Sound bearing disappears.  Remained submerged.  
        Because it can only be going to Bahia, I can certainly find it again when I surface at darkness.  
    20.00 Central Atlantic  FJ 8394    
    21.58   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  45°T, 8 nm.  
        Pursued behind the convoy, must get in sight at 02.00 hours.  
                                                       
    19.03.43      
    00.00 Central Atlantic  FJ 8615    
      ESE 1, Sea 0-1, 1/10, Vis. good, moonlit night    
    01.20   Convoy in sight to port ahead bearing 340°R, 217°T, about 6-8 nm away.  
    02.30   Positioned to port astern of the convoy.  Convoy consists of 8 steamers and 6 destroyers.  Apparently steamers proceed in 2 columns.  Escorts positioned all around.  Behind a heavily zig zagging, especially large sweeper.  (We later learn through prisoners statements that it is the small Brazilian cruiser "BAHIA".  Had I only known that!).  Because of the bright moonlight (2 days before the full moon) and numerous escorts, I can not get close enough for a surface night attack, therefore intend a submerged night attack.  
           
           
Sun and Moon Data 18.03.43
Sun and Moon Data 19.03.43
 
- 53 -
 
           
           
           
    continued      
    19.03.43      
    02.35   Maneuvered ahead at the limit of visibility on the port side of the convoy.  
    03.00   I come only slowly ahead.  Convoy smokes quite heavily, it has increased speed for an hour, by matching speed apparently runs to arrive off Bahia in any case by the beginning of day.  (later confirmed by prisoner statements).  
    03.30   Enemy speed by plotting 11-12 knots.  
    04.00 Central Atlantic  FJ 8588 The large sweeper aft and the port flank escort force me to stand off quite far.  
      ESE 1, Sea 0-1, 2/10, Vis. good, moonlit night, no marine phosphorescence  
    05.00   Because I can still not get ahead, intend to close the flank and shoot a long range fan.  
    05.15   At Action Station.  Angled in.  
    05.30   Convoy lies before me at a sharp target angle in broad formation, apparently zig zagged towards.  
    05.37   Ran ahead of the convoy.  
        Because I do not have a complete overview of the situation at the moment, I cannot decide whether I should attack on the surface or submerged.  
    05.54   I decide after some hemming and hawing on a submerged attack.  
    05.57   Dived, convoy at target angle left 10° to right 10°, about 6000 meters distant.  
    06.02   At periscope depth.  
        In the mean time it has gotten so dark, that I can no longer see exactly.  The moon is positioned unfavorably and sets slowly.  Dark clouds cover the sky.  
    06.12   I have been submerged for 15 minutes, in this time the convoy has closed to 2500-3000 meters.  I can no longer see.  Propeller sounds are heard all around.  Except for two large blurred shadows I can not find anything in the darkness.  
        Went deep.  Must abandon the underwater attack due to the defective lighting and let the convoy run over me.  
        Nevertheless had I remained only on the surface, I could still not have arrived in shooting position.  
    06.30   Convoy slowly moves around me.  
    07.00   Convoy has passed over me.  
    07.05   At periscope depth.  Moon has set, it is pitch black.  
    07.10   Shadow in sight to starboard ahead bearing 45°R, 275°T, can not make out the target angle exactly, seems however sharp target angle and once again go deep.  
           
           
           
Sun and Moon Data 19.03.43
 
- 54 -
 
           
           
           
    continued      
    19.03.43      
    07.30   At periscope depth, shadow to starboard ahead, lies apparently off, it is growing smaller.  
    07.47   Surfaced, shadow ahead to starboard, otherwise nothing seen.  
    07.50   Stand now again hopelessly behind the convoy. I regard another pursuit to directly off the harbor, one hour before it gets light, as senseless and hopeless.  
        Turned off to the east.  
    08.00 Central Atlantic  FJ 8817    
      E 1, Sea 0-1, 3/10, Vis. good, no marine phosphorescence    
    08.05   New shadow abeam to starboard, turned towards.  
    08.13   Shadow is a steamer with a broad target angle.  Also in this case pursuit appears hopeless to me.  I regard it now as correct to remain unnoticed and to wait for a departing steamer later, than to attempt an attack starting from a very unfavorable position and give myself away.  
    08.15   Turned away to the east.  
    09.00   Difference between dead reckoning and actual position after a navigation fix:  230°T, 2.5 nm.  
    09.17   Dived.  
    12.00 Central Atlantic  FJ 8819 Day's run:  Surfaced 124 nm, Submerged 34 nm.  
    16.00            "             FJ 8828    
    20.00            "             FJ 8829    
    22.10   Surfaced.  
    22.20   Difference between dead reckoning and actual position after a navigation fix:  23°T, 2.5 nm.  
        Intend to wait on a departing steamer off Bahia on SW and NE courses.  
                                                       
    20.03.43      
    00.00 Central Atlantic  FJ 8852    
      E 1, Sea 0-1, 3/10, Vis. good, moonlit night    
    01.50                          FJ 8846 Smoke cloud in sight to starboard ahead 50°R, 290°T.  Turned towards.  Shadow comes closer, seems fast and small.  
    02.20   Initially thought to be a patrol vessel and turned away.  Vessel seems to turn after me.  Ran off sidestepping.  
           
           
           
Sun and Moon Data 19.03.43
Sun and Moon Data 20.03.43
 
- 55 -
 
           
           
           
    continued      
    20.03.43      
    02.50   Vessel slowly becomes broader and does not follow us.  
    03.00   Vessel is a steamer, course 115°, 12 knots, does not zig zag.  
    03.50   At Action Stations.  
        Intend a submerged night attack in the bright moonlight.  
    04.00 Central Atlantic  FJ 8883    
      E 1, Sea 0-1, 3/10, Vis. good, moonlit night, no marine phosphorescence    
    04.02   Dived, steamer is bow right 10°, about 6000 meters away.  
    04.05   At periscope depth.  
    04.07   Turned for a bow shot.  
    04.15   Steamer has a sharper target angle than estimated at first, he lies now at target angle 0° towards me.  
    04.16   Turned away, switched to a stern shot.  Steamer is quite large, estimated at 7000 GRT.  
    04.27   Shot from tube V.  
        Target angle right 88°, target speed 12 knots, range 1200 meters, depth 2 meters.  
        After 57 seconds running time hit forward, steamer settles forward somewhat deeper, reduces RPM, stops, then goes again and turns towards me.  
    04.35   Steamer turns again, apparently on opposite course and runs at nearly full speed.  Intend a second stern shot.  
    04.38   Shot from tube VI.  
        Target angle 91°, target speed 11 knots, range 600 meters, depth 2 meters.  
        After 36.6 seconds running time hit again forward, high dark explosion column.  Steamer settles forward again somewhat deeper, stops and lists a bit to the port side, rights itself quickly again and remains lying on an even keel.  Part of the crew goes to the boats.  Lights can still be seen on the steamer.   
    05.00   Steamer still gives no indication of sinking.  I decide on a coup de grâce.  
    05.10   Coup de grâce from tube IV.  
        Shooting angle 0°, target speed 0 knots, range 1000 meters, depth 2 meters.  
        After 66.6 seconds running time hit again forward, however aim point was aft 30 meters.  The steamer still does not budge.  
    05.38                          FJ 8383 The steamer tilts forward and sinks over the forestem.  
    06.15   Surfaced, went to the boats.  
           
           
           
Sun and Moon Data 20.03.43
 
- 56 -
 
           
           
           
    continued      
    20.03.43      
    07.00   First Officer and Radio Officer taken over, Captain could not be found.  
        Steamer was the Dutch "MARISO", 7659 GRT, built in Germany.  Was with yesterday's convoy from New York via the Windward Passage, via Aruba, Trinidad, along the coast to Bahia.  Sailed from there bound for Alexandria via Cape Town.  Cargo inventory was 4 large 4-engined aircraft, 8 heavy and 6 light tanks, ammunition, explosives, automobile and aircraft tires, destined for Turkey (according to statements of the prisoners).  
        The lifeboat from which the First Officer and the Radio Officer were taken over had 2 masts and was equipped with a radio.  Attempting to transmit as we lay alongside.  Equipment was destroyed.  
    07.14   Ran off.  
    08.00 Central Atlantic  FJ 8894    
      ESE 1, Sea 0-1, 5/10, Vis. good, moonlit night.    
    09.17   Dived.  
    12.00 Central Atlantic  FJ 8895 Day's run:  Surfaced 80 nm, Submerged 32 nm.  
    16.00            "             FJ 8899    
    20.00            "             FJ 8977    
    22.09   Surfaced.  
        Intend to continue searching here.  
                                                       
    21.03.43      
    00.00 Central Atlantic  FQ 2236    
      ESE 1-2, Sea 0-1, 3/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 Central Atlantic  FQ 2259    
      ESE 1-2, Sea 0-1, 3/10, Vis. good, moonlit night    
    08.00 Central Atlantic  FQ 2278    
      ESE 1-2, Sea 1, 4/10, Vis. good, moonlit night    
    08.10                          FQ 2278 Horizontally polarized detection at 140 cm, rising steady tone.  
    08.11   Dived.  
    12.00 Central Atlantic  FQ 2275 Day's run:  Surfaced 74 nm, Submerged 28 nm.  
           
           
Sun and Moon Data 20.03.43
Sun and Moon Data 21.03.43
 
- 57 -
 
           
           
           
    continued      
    21.03.43      
    16.00 Central Atlantic  FQ 2272    
    20.00            "             FQ 2245    
    22.14   Surfaced.  
    22.20   Difference between dead reckoning and actual position after a navigation fix:  342°T, 6 nm.  
                                                       
    22.03.43      
    00.00 Central Atlantic  FQ 2215    
      E 1, Sea 0-1, 2/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 Central Atlantic  FJ 8848    
      E 2, Sea 1, 8/10, rain showers, Vis. good, moonlight night    
    08.00 Central Atlantic  FJ 8845    
      E 2, Sea 1, 3/10, rain showers, Vis. good, moonlit    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  85°T, 2.5 nm.  
    09.28   Dived.  
    12.00 Central Atlantic  FJ 8872 Day's run:  Surfaced 74 nm, Submerged 31 nm.  
    16.00            "             FJ 8878    
    20.00            "             FQ 2212    
    22.10   Surfaced.  
    22.15   Difference between dead reckoning and actual position after a navigation fix:  285°T, 2 nm.  
                                                       
    23.03.43      
    00.00 Central Atlantic  FQ 2136    
      E 2, Sea 1, 7/10, Vis. good, moonlit night    
    04.00 Central Atlantic  FJ 8887    
      E 2, Sea 1, 4/10, Vis. good, moonlit night, no marine phosphorescence    
    08.00 Central Atlantic  FJ 8844    
      E 1, Sea 0-1, 2/10, Vis. good, moonlit    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  264°T, 8 nm.  
    09.09   Dived.  
    12.00 Central Atlantic  FJ 8817 Day's run:  Surfaced 77 nm, Submerged 30 nm.  
    16.00            "             FJ 8815    
    20.00            "             FJ 8813    
           
           
Sun and Moon Data 21.03.43
Sun and Moon Data 22.03.43
Sun and Moon Data 23.03.43
 
- 58 -
 
           
           
           
    continued      
    23.03.43      
    22.10   Surfaced.  
    22.15   Difference between dead reckoning and actual position after a navigation fix:  48°T, 4.5 nm.  
                                                       
    24.03.43      
    00.00 Central Atlantic  FJ 8585 Because my fuel is slowly dwindling, I intend to go slowly to the north along the determined convoy route.  
      E 2, Sea 1, 3/10, Vis. good, moonlit night, no marine phosphorescence  
    04.00 Central Atlantic  FJ 8562    
      E 2, Sea 1, 4/10, Vis. good, moonlit night    
    06.15                          FJ 8614 Brief horizontally polarized detection on 125 cm.  
    06.20   Detection comes again, was rising continuous tone.  
    06.22   Dived.  
    07.38   Surfaced.  
    08.00 Central Atlantic  FJ 8612    
      E 1, Sea 0-1, 2/10, Vis. good, moonlit    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  40°T, 5 nm.  
    09.15   Dived.  
    12.00 Central Atlantic  FJ 8379 Day's run:  Surfaced 68 nm, Submerged 33 nm.  
    16.00            "             FJ 8381    
    20.00            "             FJ 8359    
    22.07   Surfaced.  
    22.10                          FJ 9181 Difference between dead reckoning and actual position after a navigation fix:  40°T, 5 nm.  
    22.46                          FJ 8361 Horizontally polarized detection at 140 cm, steady tones.  
    22.47   Dived.  
    23.58   Surfaced.  
                                                       
    25.03.43      
    00.00 Central Atlantic  FJ 8361    
      E 2, Sea 1-2, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    00.25                          FJ 8361 Horizontally polarized detection at 140 cm, steady tone.  
    00.26   Dived.  
        Apparently I am detected on the convoy route.  Course change with the intention of setting off somewhat.  
           
           
           
           
Sun and Moon Data 23.03.43
Sun and Moon Data 24.03.43
Sun and Moon Data 25.03.43
 
- 59 -
 
           
           
           
    continued      
    25.03.43      
    02.10   Surfaced.  
    04.00 Central Atlantic  FJ 9142    
      E 2-3, Sea 1-2, 5/10, Vis. good, moonlit night    
    05.30                          FJ 9151 Light in sight to port ahead bearing 350°R, 80°T.  It is a steamer with set navigation lights.  Steering southerly course, runs at medium speed.  
        Steamer has only steaming lights and side lanterns set.  He carries no other lights or markings.  In accordance with Standing Kriegsmarine Order No. 101 B II 5 c I can attack him without warning.  
    05.50   Maneuvered ahead.  Steamer steers 200°, runs at 12 knots, yaws heavily, however, does not zig zag.  Estimate normal freighter of 5000 GRT.  
    06.40   At Action Stations.  
        Intend due to the bright moon a two-fan at 3-4000 meters.  
    07.03   Ran in for attack.  
    07.07   Fan from tubes I and III.  
        Fixed angle 0°, target speed 12 knots, target angle right 80°, depth 3 meters.  
        After 1 minute 44 seconds running time hit in the foreship.  High, dark explosion column, lights on the steamer, boats are lowered.  Steamer settles deeper forward.  
        By the running time the steamer was 2100 meters away, therefore the range was greatly over estimated.  
        Steamer attempts to transmit, however gets only a couple of characters out.  
    07.15   Steamer sinks over the forestem.  
    07.16   Went to the boats.  
    07.50   Captain, First Officer and Engineering Officer taken over.  Departed.  
        Steamer was the Swedish "INDUSTRIA" 1600 GRT, so a let down.  Too bad about the second torpedo.  Steamer was loaded with piece goods, from Philadelphia for Rio de Janeiro.  By the big crates which had stood on deck and by the greatly overestimated range he was estimated as much bigger.  I had not expected such small ships here.  
    08.00 Central Atlantic  FJ 9181    
      E 2-3, Sea 1-2, 4/10, rain showers, Vis. good, moonlit, no marine phosphorescence    
    09.00   Difference between dead reckoning and actual position after a navigation fix:  185°T, 2 nm.  
    09.18   Dived.  
    12.00 Central Atlantic  FJ 9164 Day's run:  Surfaced 63 nm, Submerged 51 nm.  
           
           
Sun and Moon Data 25.03.43
 
- 60 -
 
           
           
           
    continued      
    25.03.43      
    16.00 Central Atlantic  FJ 9161    
    20.00            "             FJ 9138    
    21.58   Surfaced.  
    22.00   Difference between dead reckoning and actual position after a navigation fix:  210°T, 1.5 nm.  
                                                       
    26.03.43      
    00.00 Central Atlantic  FJ 9133    
      E 2, Sea 1-2, 6/10, Vis. medium to good, medium-bright night, no marine phosphorescence    
    04.00 Central Atlantic  FJ 6872    
      E 3, Sea 2, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    08.00 Central Atlantic  FJ 6824    
      E 2-3, Sea 2, 1/10, Vis. good, moonlit    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  85°T, 6 nm.  
    09.12   Dived.  
    12.00 Central Atlantic  FJ 6589 Day's run:  Surfaced 69 nm, Submerged 30 nm.  
    16.00            "             FJ 6594    
    20.00            "             FJ 6592    
    21.53   Surfaced.  
    22.25                          FJ 6569 Horizontally polarized detection at 140 cm, dived.  
    23.04   Surfaced.  
                                                       
    27.03.43      
    00.00 Central Atlantic  FJ 6644    
      E 2-3, Sea 1, 4/10, Vis. medium to good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FJ 6621    
      E 2, Sea 1-2, 7/10, Vis. good, moonlit night    
    05.00   Incoming Radio Message  1352/24/303:  
        1.  . . . .  
        2.  "Wissmann" begin return transit and report.  Head for square DG 50.  Same objective for Hartenstein.  
        3.  . . . .  
    08.00 Central Atlantic  FJ 6391    
      E 2, Sea 1-2, 7/10, Vis. changing, moonlit    
    08.45   Difference between dead reckoning and actual position after a navigation fix:  45°T, 6 nm.  
    09.07   Dived.  
    12.00 Central Atlantic  FJ 6365 Day's run:  Surfaced 72 nm, Submerged 30 nm.  
           
           
Sun and Moon Data 25.03.43
Sun and Moon Data 26.03.43
Sun and Moon Data 27.03.43
 
- 61 -
 
           
           
           
    continued      
    27.03.43      
    16.00 Central Atlantic  FJ 6363    
    20.00            "             FK 4117    
    21.55   Surfaced.  
                                                       
    28.03.43      
    00.00 Central Atlantic  FK 4144 Still intend to spend on night off Pernambuco to operate on traffic for Cape Town.  
      E 2-3, Sea 2, 3/10, Vis. good, faint marine phosphorescence  
    03.00   Incoming Radio Message 1858/27/341:  
        1.  . . . .  
        2.  . . . .  
        3.  "Wissmann", "Hartenstein", report position and fuel.  
        Intend to transmit first in the following night.  
    04.00 Central Atlantic  FK 4118    
      E 2-3, Sea 1-2, 8/10, rain showers, Vis. changing, dark night, marine phosphorescence    
    08.00 Central Atlantic  FK 4127    
      E 2-3, Sea 1-2, 8/10, rain showers, Vis. good, moonlit, no marine phosphorescence    
    08.50   Difference between dead reckoning and actual position after a navigation fix:  60°T, 5 nm.  
    09.14   Dived.  
    12.00 Central Atlantic  FK 4123 Day's run:  Surfaced 71 nm, Submerged 30 nm.  
    16.00            "             FK 1797    
    20.00            "             FK 1795    
    21.51   Surfaced.  
        Outgoing Radio Message 2151/28/:  
        20 March FJ 8883 "MARISO" 110°, 12 knots, 25 March FJ 9181 "INDUSTRIA" 200°, 12 knots, sunk.  5 prisoners on board.  Return transit.  FK 1796, 48 cbm, Trade Wind weather 4, 1 plus 3 torpedoes, request new cable for Metox.  
                                                           - Wissmann -  
                                                       
    29.03.43      
    00.00 Central Atlantic  FK 1847    
      ENE 2-3, Sea 1-2, 7/10, Vis. good, medium-bright night, marine phosphorescence    
    00.15   Radio Message sent and understood.  
           
           
           
           
Sun and Moon Data 27.03.43
Sun and Moon Data 28.03.43
Sun and Moon Data 29.03.43
 
- 62 -
 
           
           
           
    continued      
    29.03.43      
    01.40   Incoming Radio Message 2214/28/374:  
        1. . . .  
        2.  "Hartenstein", "Wissmann", report position.  
        3.  . . . .  
        Already done.  
    02.00   Time set to German Summer Time (1 hour ahead).  
    04.00 Central Atlantic  FK 1819    
      E 2-3, Sea 1-2, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  FK 1588    
      E 2-3, Sea 1-2, 5/10, rain showers, Vis. good, moonlit    
    09.40   Difference between dead reckoning and actual position after a navigation fix:  215°T, 6 nm.  
    10.08   Dived.  
    12.00 Central Atlantic  FK 1583 Day's run:  Surfaced 69 nm, Submerged 27 nm.  
    16.00            "             FK 1567    
    20.00            "             FK 1565    
    22.50   Surfaced.  Difference between dead reckoning and actual position after a navigation fix:  138°T, 6 nm.  
                                                       
    30.03.43      
    00.00 Central Atlantic  FK 1641    
      E 2, Sea 1, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FK 1613    
      E 2, Sea 1, C 2, Vis. good, faint marine phosphorescence    
    04.50                          FK 1384 Illuminated aircraft to port ahead, course approximately south.  
    08.00 Central Atlantic  FK 1359    
      E 2, Sea 1, 7/10, Vis. medium to good, medium-bright night, faint marine phosphorescence    
    09.40   Difference between dead reckoning and actual position after a navigation fix:  215°T, 2 nm.  
    10.26   Dived.  
    12.00 Central Atlantic  FK 1361 Day's run:  Surfaced 69 nm, Submerged 32 nm.  
    16.00            "             FK 1338    
    17.23 - 18.06   Boat ventilated.  
    20.00            "             FK 1333    
           
           
           
           
           
Sun and Moon Data 29.03.43
Sun and Moon Data 30.03.43
 
- 63 -
 
           
           
           
    continued      
    30.03.43      
    22.36   Surfaced.  
    22.40   Difference between dead reckoning and actual position after a navigation fix:  150°T, 2 nm.  
                                                       
    31.03.43      
    00.00 Central Atlantic  FC 9778    
      E 1-2, Sea 1, 2/10, Vis. good, faint marine phosphorescence    
    01.26                          FC 9773 Horizontally polarized detection on 140 cm, dived.  
    04.00 Central Atlantic  FC 9773 Surfaced.  
      E 1-2, Sea 1, 4/10, Vis. good, heavy marine phosphorescence, medium-bright night    
    08.00 Central Atlantic  FC 9731    
      E 2, Sea 1, 9/10, Vis. good, medium-bright night, heavy marine phosphorescence    
    09.30   Difference between dead reckoning and actual position after a navigation fix:  80°T, 2 nm.  
    10.12   Dived.  
        Because the cloud deck is very unfavorable and in the previous night again air with detection, will remain submerged once again.  
    12.00 Central Atlantic  FC 9493 Day's run:  Surfaced 75 nm, Submerged 38 nm.  
    16.00            "             FC 9545    
    20.00            "             FC 9543    
    22.28   Surfaced.  
                                                       
    01.04.43      
    00.00 Central Atlantic  FC 9522    
      NE 1-2, Sea 1, 6/10, Vis. good, medium-bright night, marine phosphorescence and summer lightening    
    04.00 Central Atlantic  FC 9265    
      NE 1-2, Sea 0-1, 8/10, rain showers, Vis. good, medium-bright night, faint marine phosphorescence, summer lightening    
    08.00 Central Atlantic  FC 6892    
      NE 1-2, Sea 0-1, 5/10, Vis. changing, marine phosphorescence and summer lightening    
           
           
Sun and Moon Data 30.04.43
Sun and Moon Data 31.04.43
Sun and Moon Data 01.04.43
 
- 64 -
 
           
           
           
    continued      
    01.04.43      
    10.13 - 10.40   Test dive.  
    12.00 Central Atlantic  FC 6835 Day's run:  Surfaced 121 nm, Submerged 34 nm.  
      NE 1-2, Sea 0-1, 7/10, Vis. good Finally again on the surface.  The climate was very unfavorable these past 7-1/2 weeks at the coast, dived by day, the crew was sometimes stressed to the limits of their physical capacity.  
    16.00 Central Atlantic  FC 6592  
      E 2, Sea 1, 8/10, Vis. good  
    20.00 Central Atlantic  FC 6535    
      ENE 1-2, Sea 1, 7/10, rain showers, Vis. good    
    22.25   Difference between dead reckoning and actual position after a navigation fix:  266°T, 20 nm.  
                                                       
    02.04.43      
    00.00 Central Atlantic  FC 6282    
      NE 2, Sea 1, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  FC 6225    
      NE 2, Sea 1, 7/10, rain showers, Vis. changing, faint marine phosphorescence    
    08.00 Central Atlantic  FC 3882    
      NE 2, Sea 1, 5/10, rain showers, Vis. changing, marine phosphorescence    
    12.00 Central Atlantic  FC 3825 Day's run:  Surfaced 162 nm, Submerged . / .  
      NE 2, Sea 1, 5/10, rain showers, Vis. good    
    16.00 Central Atlantic  FC 3558    
      E 2, Sea 1-2, 9/10, rain showers, Vis. changing    
    16.07   St. Paul's Rocks abeam to starboard, distance 800 meters.  
    20.00 Central Atlantic  FC 3525    
      E 2, Sea 1, 10/10, Vis. good    
                                                       
    03.04.43      
    00.00 Central Atlantic  FC 3258    
      NE 2, Sea 1-2, 9/10, rain showers, Vis. changing, marine phosphorescence and summer lightening    
           
Sun and Moon Data 01.04.43
Sun and Moon Data 02.04.43
Sun and Moon Data 03.04.43
 
- 65 -
 
           
           
           
    continued      
    03.04.43      
    04.00 Central Atlantic  FC 3222    
      NE 2, Sea 1, 8/10, rain showers, Vis. good, medium-bright night, marine phosphorescence and summer lightening.    
    08.00 Central Atlantic  ER 9858    
      NE 2, Sea 1, 8/10, rain showers, Vis. good, medium-bright night, marine phosphorescence    
    09.35   Difference between dead reckoning and actual position after a navigation fix:  63°T, 10 nm.  
    10.12 - 10.45   Test dive  
    12.00 Central Atlantic  ER 9823 Day's run:  Surfaced 163 nm, Submerged 2 nm.  
      NE 3, Sea 2-3, 5/10, Vis. good    
    16.00 Central Atlantic  ER 9556    
      NE 3, Sea 2-3, 6/10, Vis. good    
    20.00 Central Atlantic  ER 9523    
      NE 3, Sea 2-3, overcast, Vis. good    
                                                       
    04.04.43      
    00.00 Central Atlantic  ER 9259    
      NE 3, Sea 2-3, 7/10, Vis. good, medium-bright night, marine phosphorescence    
    04.00 Central Atlantic  ER 9223    
      NNE 2-3, Sea 1, 8/10, rain showers, Vis. good, medium-bright night, marine phosphorescence and summer lightening    
    08.00 Central Atlantic  ER 6859    
      NNE 2, Sea 1-2, 6/10, Vis. good, strong marine phosphorescence    
    10.08 - 10.40   Test dive.  
    12.00 Central Atlantic  ER 6826 Day's run:  Surfaced 154 nm, Submerged 2.5 nm.  
      NNE 2, Sea 1, 7/10, Vis. good    
    16.00 Central Atlantic  ER 6559    
      NNE 2, Sea 1, 4/10, Vis. good    
    20.00 Central Atlantic  ER 6526    
      N 2, Sea 1-2, 8/10, Vis. good    
    22.30   Difference between dead reckoning and actual position after a navigation fix:  291°T, 20 nm.  
                                                       
           
           
Sun and Moon Data 03.04.43
Sun and Moon Data 04.04.43
 
- 66 -
 
           
           
           
           
    05.04.43      
    00.00 Central Atlantic  ER 6256    
      NNE 3, Sea 2, 2/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  ER 3874    
      NNE 3, Sea 2, 2/10, Vis. good, marine phosphorescence    
    08.00 Central Atlantic  ER 3846    
      NNE 2-3, Sea 1-2, 2/10, Vis. medium, medium-bright night    
    09.30   Difference between dead reckoning and actual position after a navigation fix:  90°T, 10 nm.  
    10.04 - 10.44   Test dive.  
    12.00 Central Atlantic  ER 3588 Day's run:  Surfaced 162 nm, Submerged 2.5 nm.  
      NNE 2-3, Sea 1-2, 6/10, Vis. good    
    16.00 Central Atlantic  ER 3555    
      NNE 2-3, Sea 1-2, 2/10, Vis. good    
    20.00 Central Atlantic  ER 3288    
      NNE 2, Sea 1, 3/10, Vis. good    
                                                       
    06.04.43      
    00.00 Central Atlantic  ER 3252    
      NNE 2-3, Sea 2, 4/10, Vis. good, marine phosphorescence    
    04.00 Central Atlantic  EH 9888    
      NNE 2, Sea 1, 4/10, Vis. medium to good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  EH 9852    
      NNE 2, Sea 1, 1/10, Vis. good, medium-bright night, faint marine phosphorescence    
    09.30   Difference between dead reckoning and actual position after a navigation fix:  64°T, 7 nm.  
    10.11 - 10.41   Test dive.  
    12.00 Central Atlantic  EH 9586 Day's run:  Surfaced 166 nm, Submerged 2 nm.  
      NE 2-3m Sea 1-2, 8/10, Vis. good    
    16.00 Central Atlantic  EH 9553    
      NE 2, Sea 1-2, 6/10, Vis. good    
    17.30   Incoming Radio Message 1636/6/313:  
        "Wissmann" head for square DH 44.  Approximately in the vicinity of the named square supply from U-117 on April 15.  
           
           
Sun and Moon Data 05.04.43
Sun and Moon Data 06.04.43
 
- 67 -
 
           
           
           
    continued      
    06.04.43      
    20.00 Central Atlantic  EH 9286    
      NE 2, Sea 1-2, 5/10, Vis. good    
    22.35   Difference between dead reckoning and actual position after a navigation fix:  215°T, 6 nm.  
                                                       
    07.04.43      
    00.00 Central Atlantic  EH 9252    
      NE 2, Sea 1-2, 6/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  EH 6888    
      NNE 2, Sea 1, 3/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  EH 6852    
      NNE 1-2, Sea 1, 4/10, Vis. good, faint marine phosphorescence    
    09.30   Difference between dead reckoning and actual position after a navigation fix:  260°T, 4 nm.  
    10.06 - 10.30   Test dive.  
    12.00 Central Atlantic  EH 6587 Day's run:  Surfaced 166 nm, Submerged 2 nm.  
      NNE 2, Sea 1, 6/10, Vis. good    
    16.00 Central Atlantic  EH 6551    
      NNE 3, Sea 2, 6/10, Vis. good    
    20.00 Central Atlantic  EH 6287    
      NNE 3, Sea 2, 7/10, Vis. good    
    22.40   Difference between dead reckoning and actual position after a navigation fix:  266°T, 10 nm.  
                                                       
    08.04.43      
    00.00 Central Atlantic  EH 6243    
      NE 3, Sea 2, 8/10, Vis. good, medium-bright night, no marine phosphorescence    
    04.00 Central Atlantic  EH 3876    
      NE 3, Sea 2, 6/10, Vis. medium, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  EH 3843    
      NE 3, Sea 2, 5/10, Vis. medium, faint marine phosphorescence    
    09.25   Difference between dead reckoning and actual position after a navigation fix:  140°T, 10 nm.  
           
Sun and Moon Data 06.04.43
Sun and Moon Data 07.04.43
Sun and Moon Data 08.04.43
 
- 68 -
 
           
           
           
    continued      
    08.04.43      
    10.08 - 10.49   Test dive.  
    12.00 Central Atlantic  EH 3822 Day's run:  Surfaced 162 nm, Submerged 2.5 nm.  
      NE 3, Sea 2, 4/10, Vis. good    
    16.00 Central Atlantic  EH 3558    
      NE 4-5, Sea 3, 5/10, Vis. good    
    20.00 Central Atlantic  EH 3525    
      NE 4, Sea 3, 8/10, Vis. good    
                                                       
    09.04.43      
    00.00 Central Atlantic  EH 3282    
      NE 4, Sea 3, 9/10, Vis. medium, faint marine phosphorescence    
    04.00 Central Atlantic  EH 3228    
      NE 3-4, Sea 3, 7/10, Vis. good, medium-bright night, faint marine phosphorescence    
    08.00 Central Atlantic  DS 9882    
      NE 3-4, Sea 3, 8/10, Vis. good, faint marine phosphorescence    
    09.25   Difference between dead reckoning and actual position after a navigation fix:  240°T, 4 nm.  
    10.06 - 10.38   Test dive.  
    12.00 Central Atlantic  DS 9852 Day's run:  Surfaced 143 nm, Submerged 2 nm.  
      NE 3, Sea 2, 5/10, Vis. good    
    16.00 Central Atlantic  DS 9589    
      NE 3, Sea 2, 7/10, Vis. good    
    20.00 Central Atlantic  DS 9568    
      NE 3, Sea 2, 8/10, Vis. good    
                                                       
    10.04.43      
    00.00 Central Atlantic  DS 9611    
      NE 3-4, Sea 2-3, 9/10, Vis. medium to good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  DS 9373    
      NE 3, Sea 2, 9/10, Vis. good, medium-bright night, faint marine phosphorescence    
           
           
           
           
Sun and Moon Data 08.04.43
Sun and Moon Data 09.04.43
Sun and Moon Data 10.04.43
 
- 69 -
 
           
           
           
    continued      
    10.04.43      
    08.00 Central Atlantic  DS 9352    
      NE 3, Sea 2, 4/10, Vis. good, faint marine phosphorescence    
    09.58 - 10.35   Test dive.  
    12.00 Central Atlantic  DE 6989 Day's run:  Surfaced 141 nm, Submerged 1.5 nm.  
      NE 3-4, Sea 3, 9/10, Vis. good    
    16.00 Central Atlantic  DS 6968    
      NE 3-4, Sea 3, 5/10, Vis. good    
    20.00 Central Atlantic  DT 4714    
      NE 3, Sea 2, 5/10, Vis. good    
    22.40   Difference between dead reckoning and actual position after a navigation fix:  213°T, 6 nm.  
                                                       
    11.04.43      
    00.00 Central Atlantic  DT 4478    
      NE 3, Sea 2, 5/10, Vis. good, medium-bright night, faint marine phosphorescence    
    04.00 Central Atlantic  DT 4454    
      NE 2-3, Sea 2, 8/10, dark night, faint marine phosphorescence, Vis. changing    
    08.00 Central Atlantic  DT 4425    
      NE 3-4, Sea 2-3, 9/10, Vis. changing, medium-bright night, marine phosphorescence    
    09.56 - 10.26   Test dive.  
    12.00 Central Atlantic  DT 4194 Day's run:  Surfaced 136 nm, Submerged 2 nm.  
      NE 4, Sea 3, overcast, Vis. good    
    16.00 Central Atlantic  DT 4163    
      NE 3, Sea 2-3, 8/10, Vis. good    
    20.00 Central Atlantic  DT 1878    
      NE 3-4, Sea 3, 9/10, Vis. good    
    22.30   Difference between dead reckoning and actual position after a navigation fix:  60°T, 1 nm.  
                                                       
           
Sun and Moon Data 10.04.43
Sun and Moon Data 11.04.43
 
- 70 -
 
           
           
           
           
    12.04.43      
    00.00 Central Atlantic  DT 1849    
      NE 3-4, Sea 3, overcast, Vis. good, dark night, marine phosphorescence    
    04.00 Central Atlantic  DT 1828    
      NNE 3-4, Sea 3, overcast, Vis. medium, medium-bright night, marine phosphorescence    
    08.00 Central Atlantic  DT 1597    
      NNE 4, Sea 3, overcast, Vis. good, dark night, faint marine phosphorescence    
    09.49 - 10.27   Test dive.  
    12.00 Central Atlantic  DT 1568 Day's run:  Surfaced 130 nm, Submerged 2 nm.  
      NNE 4, Sea 3, overcast, Vis. good Incoming Radio Message 0924/12/391:  
      To "Neumann".  Report arrival square DH 4455.  There supply "Wissmann" for economical return transit plus a cable.  After completion "Neumann" go to square DG 8555.  
    16.00 Central Atlantic  DT 1614    
      NNE 3-4, Sea 2-3, 8/10, Vis. good    
    20.00 Central Atlantic  DT 1376    
      NNE 3, Sea 2-3, overcast, Vis. good    
                                                       
    13.04.43      
    00.00 Central Atlantic  DT 1354    
      NNE 3, Sea 2-3, overcast, Vis. medium, medium-bright night, marine phosphorescence    
    04.00 Central Atlantic  DT 1323    
      NNE 3-4, Sea 3, overcast, Vis. good, medium-bright night, faint marine phosphorescence    
    05.01   Incoming Radio Message 0431/13/305:  
        "Neumann" is expected at the meeting point on 16 April 09.00 hours.  Short Signal heard with volume 5.  
    08.00 Central Atlantic  DG 9881    
      NNE 3, Sea 3, overcast, rain showers, Vis. good    
    09.43 - 10.22   Test dive.  
    12.00 North Atlantic  DG 9852 Day's run:  Surfaced 128 nm, Submerged 2.5 nm.  
      NNE 3, Sea 2-3, 8/10, Vis. good    
    16.00 North Atlantic  DG 9823    
      NNE 4, Sea 3, 9/10, Vis. good    
    20.00 North Atlantic  DG 9568    
      NNE 4-5, Sea 3-4, 7/10, Vis. good    
    22.30   Difference between dead reckoning and actual position after a navigation fix:  333°T, 14 nm.  
                                                       
           
Sun and Moon Data 12.04.43
Sun and Moon Data 13.04.43
 
- 71 -
 
           
           
           
           
    14.04.43      
    00.00 North Atlantic  DG 9532    
      NNE 5, Sea 4, 7/10, Vis. good, moonlit night, faint marine phosphorescence    
    04.00 North Atlantic  DG 9269    
      NNE 3-4. Sea 3, 8/10, Vis. medium, medium-bright night, marine phosphorescence    
    08.00 North Atlantic  DG 9318    
      NNE 3-4, Sea 3, 8/10, Vis. medium, medium-bright night, marine phosphorescence    
    08.40   Difference between dead reckoning and actual position after a navigation fix:  40°T, 4 nm.  
    09.29 - 10.07   Test dive.  
    12.00 North Atlantic  DG 6988 Day's run:  Surfaced 131 nm, Submerged 2.5 nm.  
      N 4-5, Sea 3-4, 3/10, Vis. good Incoming Radio Message 1059/14/322:  
      "Scheibe" on 16 April in square DH 4455 give about 10 men to "Wissmann" and the remainder of "Sturm" crew split with U-159.  Thereafter all boats return transit.  U-159 report completion.  
    16.00 North Atlantic  DG 6967    
      NE 4, Sea 3, 4/10, Vis. good    
    20.00 North Atlantic  DG 6939    
      N 4, Sea 3, 5/10, Vis. good    
    22.20   Difference between dead reckoning and actual position after a navigation fix:  195°T, 14 nm.  
                                                       
    15.04.43      
    00.00 North Atlantic  DH 4741    
      N 3, Sea 3, 10/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  DH 4718    
      NNE 2-3, Sea 2, 7/10, Vis. good, medium-bright night, marine phosphorescence    
    08.00 North Atlantic  DH 4716    
      NNE 2-3, Sea 2, 9/10, Vis. good, medium-bright night, marine phosphorescence    
    09.37   Dived, because just off the supply square, proceeding submerged.  
    12.00 North Atlantic  DH 4721 Day's run:  Surfaced 82 nm, Submerged 8 nm.  
           
Sun and Moon Data 14.04.43
Sun and Moon Data 15.04.43
 
- 72 -
 
           
           
           
    continued      
    15.04.43      
    12.11 - 12.37   Boat ventilated.  
    15.52   Surfaced to ventilate.  
    16.00 North Atlantic  DH 4487    
    16.30   Dived.  
    20.00 North Atlantic  DH 4485    
    22.16   Surfaced.  
    22.35   Difference between dead reckoning and actual position after a navigation fix:  320°T, 6 nm.  
                                                       
    16.04.43      
    00.00 North Atlantic  DH 4451    
      NNE 1, Sea 0-1, 8/10, Vis. good, moonlit night    
    04.00 North Atlantic  DH 4184    
      N 0-1, Sea 0, overcast, rain showers, moonlit night, faint marine phosphorescence    
    08.00 North Atlantic  DH 4452    
      N 0-1, Sea 0, overcast, rain showers, Vis. medium, hazy, faint marine phosphorescence    
    08.50                        DH 4455 Positioned in the center of the supply square.  Dawn begins.  
    08.55   2 U-boats in sight, starboard astern bearing 130°R, 310°T.  
        Recognition signals exchanged with U-159.  The other boat is U-117.  
    10.00   Fuel oil transfer begins with U-117.  
    12.00 North Atlantic  DH 4453 Day's run:  Surfaced 89 nm, Submerged 22 nm.  
      N 1, Sea 0-1, 8/10, Vis. good    
    12.30   35 cbm fuel oil, 1 Fu.M.B. antenna and small quantity of provisions taken over from U-117.  
    13.10   Begin transfer of lubricating oil and provisions from U-159 and U-455.  
    16.00 North Atlantic  DH 4455 12 men of the "Sturm" crew are taken over from U-455.  
      N 1, Sea 0-1, 7/10, Vis. good    
    16.10   Lubricating oil and provisions supplied by U-159 and U-455.  Continued return transit.  
    17.20 - 18.11   Test dive.  
           
           
           
           
Sun and Moon Data 15.04.43
Sun and Moon Data 16.04.43
 
- 73 -
 
           
           
           
    continued      
    16.04.43      
    20.00 North Atlantic  DH 4422    
      N 1-2, Sea 1, 7/10, Vis. good    
                                                       
    17.04.43      
    00.00 North Atlantic  DH 4155    
      N 1-2, Sea 1, 9/10, rain showers, Vis. changing, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  DH 1788    
      N 2, Sea 1-2, 6/10, Vis. changing, no marine phosphorescence    
    08.00 North Atlantic  DH 1755    
      N 2, Sea 1, 7/10, rain showers, Vis. changing, moonlit    
    09.17 - 09.45   Test dive.  
    12.00 North Atlantic  DH 1722 Day's run:  Surfaced 143 nm, Submerged 5 nm.  
      E 1-2, Sea 1, 8/10, Vis. good    
    16.00 North Atlantic  DH 1458    
      E 1-2, Sea 1, 6/10, Vis. good    
    16.14   Difference between dead reckoning and actual position after a navigation fix:  190°T, 7 nm.  
    20.00 North Atlantic  DH 1425    
      E 1-2, Sea 1, 8/10, rain showers, Vis. good    
                                                       
    18.04.43      
    00.00 North Atlantic  DH 1158    
      ENE 2, Sea 1-2, 7/10, Vis. changing, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  DH 1125    
      E 1-2, Sea 1, 4/10, Vis. good, moonlit night, marine phosphorescence    
    08.00 North Atlantic  CF 7958    
      E 1-2, Sea 1, 4/10, Vis. good, moonlit, no marine phosphorescence    
    09.08 - 09.47   Test dive.  
           
Sun and Moon Data 16.04.43
Sun and Moon Data 17.04.43
Sun and Moon Data 18.04.43
 
- 74 -
 
           
           
           
    continued      
    18.04.43      
    12.00 North Atlantic  CF 7922 Day's run:  Surfaced 163 nm, Submerged 2.5 nm.  
      NE 1-2, Sea 1, 7/10, Vis. good    
    16.00 North Atlantic  CF 7652    
      NE 2-3, Sea 1-2, 8/10, rain showers, Vis. changing, hazy    
    16.30   Difference between dead reckoning and actual position after a navigation fix:  350°T, 3 nm.  
    16.55                           CF 7625 Shadow in sight ahead to port in the haze, bearing 350°T.  Turned away hard and ran off to the limit of visibility.  
        Shadow is a steamer, freighter of about 5000 GRT.  Bow left 100°, range 5000 meters.  
        Nothing more distinguished in the haze.  
        Steamer steers a W-course, runs at medium speed, does not zig zag.  
    17.12   Steamer can ultimately only be a neutral, nevertheless maneuvered ahead, to identify exactly submerged.  
    19.23   Positioned ahead of the steamer, about 10 nm away.  Dived.  Let him come on.  
    19.50   At periscope depth, steamer in sight, course 270°, speed 10 knots.  
    20.00 North Atlantic  CF 7532    
    20.30   Steamer is from Switzerland, chartered Greek steamer "MOUNT AETNA" with perfect markings, empty, on the way to the west via the Spanish route.  Pity.  
    20.40   Turned away, ran off.  
    21.38   Surfaced.  
                                                       
    19.04.43      
    00.00 North Atlantic  CF 7293    
      NE 2, Sea 1-2, 8/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  CF 7317    
      NNE 3, Sea 2, 4/10, Vis. good, moonlit night, no marine phosphorescence    
    08.00 North Atlantic  CF 4975    
      NNE 2-3, Sea 2, 8/10, rain showers, Vis. changing, moonlit night    
           
           
Sun and Moon Data 18.04.43
Sun and Moon Data 19.04.43
 
- 75 -
 
           
           
           
    continued      
    19.04.43      
    09.13 - 09.47   Test dive.  
    12.00 North Atlantic  CF 4951 Day's run:  Surfaced 170 nm, Submerged 9.5 nm.  
      N 2-3, Sea 2, 9/10, rain showers, Vis. changing    
    16.00 North Atlantic  CF 4683    
      NE 3, Sea 2, 8/10, Vis. good    
    16.02   Difference between dead reckoning and actual position after a navigation fix:  20°T, 2.5 nm.  
        Incoming Radio Message 1237/19/109:  
        Return harbor for U-159, "Wissmann", "Würdemann", "Wiebe" is Lorient, for "Scheibe" Nazaire.  
                                                                      - F.d.U. West -  
    20.00 North Atlantic  CF 4632    
      W 1-2, Sea 0-1, 8/10, Vis. good    
                                                       
    20.04.43      
    00.00 North Atlantic  CF 5141    
      W 1-2, Sea 0-1, 6/10, Vis. good, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  CF 2773    
      NNE 1-2, Sea 1, 9/10, rain showers, moonlit night, Vis. changing    
    08.00 North Atlantic  CF 2722    
      N 0-1, Sea 0, 8/10, Vis. good    
    11.22   Dived.  
        Proceeded submerged because the cloudiness is very unfavorable and the sea is mirror flat.  
    12.00 North Atlantic  CF 2467 Day's run:  Surfaced 212 nm, Submerged 1 nm.  
    14.58 - 15.34   Boat ventilated.  
    16.00 North Atlantic  CF 2463    
    17.58 - 18.18   Boat ventilated.  
    20.00 North Atlantic  CF 2518    
    22.49   Surfaced.  
                                                       
           
           
Sun and Moon Data 19.04.43
Sun and Moon Data 20.04.43
 
- 76 -
 
           
           
           
           
    21.04.43      
    00.00 North Atlantic  CF 2522    
      Wind calm, Sea 0, overcast, rain showers, Vis. changing, moonlit night, no marine phosphorescence    
    04.00 North Atlantic  CF 2375    
      N 1, Sea 0-1, 9/10, Vis. changing, moonlit night, no marine phosphorescence    
    08.00 North Atlantic  DF 2365    
      SE 0-1, Sea 0, 8/10, Vis. good, moonlit    
    08.51   Dived.  Proceeded submerged.  
    12.00 North Atlantic  CF 3141 Day's run:  Surfaced 94.5 nm, Submerged 40.5 nm.  
    16.00           "            CF 3119    
    20.00           "            CF 3127    
    22.43   Surfaced.  
                                                       
    22.04.43      
    00.00 North Atlantic  CF 3131    
      NW 5, Sea 4, overcast, rain showers, Vis. changing, medium-bright night, faint marine phosphorescence    
    01.20   Difference between dead reckoning and actual position after a navigation fix:  90°T, 14 nm.  
    04.00 North Atlantic  BE 8983    
      NW 3, Sea 2, overcast, Vis. good, moonlit night, no marine phosphorescence    
    08.00 North Atlantic  BE 9742    
      NNW 1-2, Sea 1, overcast, rain, Vis. changing, moonlit    
    08.13   Dived.  Proceed submerged.  
    12.00 North Atlantic  BE 9743 Day's run:  Surfaced 96 nm, Submerged 36 nm.  
    16.00           "            BE 9727    
    20.00           "            BE 9725    
    22.39   Surfaced.  
                                                       
           
Sun and Moon Data 21.04.43
Sun and Moon Data 22.04.43
 
- 77 -
 
           
           
           
           
    23.04.43      
    00.00 North Atlantic  BE 9732    
      SW 2, Sea 1, overcast, Vis. medium, medium-bright night, heavy marine phosphorescence    
    04.00 North Atlantic  BE 9581    
      SW 2, Sea 1-2, overcast, rain showers, Vis. medium, moonlit night, faint marine phosphorescence    
    08.00 North Atlantic  BE 9563    
      SSW 2-3, Sea 2, overcast, hazy, Vis. medium    
    08.07   Dived.  Proceeded submerged.  
    12.00 North Atlantic  BE 9641 Day's run:  Surfaced 93.5 nm, Submerged 36.5 nm.  
    16.00           "            BE 9618    
    20.00           "            BE 9624    
    22.24   Surfaced.  
    22.30   Difference between dead reckoning and actual position after a navigation fix:  180°T, 19 nm.  
                                                       
    24.04.43      
    00.00 North Atlantic  BE 9653    
      NNW 2-3, Sea 2, 3/10, Vis. medium, medium-bright night, heavy marine phosphorescence    
    04.00 Bay of Biscay  BF 7413    
      NW 1-2, Sea 1, 5/10, Vis. good, faint marine phosphorescence    
    06.50   Difference between dead reckoning and actual position after a navigation fix:  145°T, 3 nm.  
    07.08   Dived.  Proceeded submerged.  
    08.00 Bay of Biscay  BF 7195    
    12.00          "             BF 7274 Day's run:  Surfaced 85 nm, Submerged 39 nm.  
    16.00          "             BF 7272    
    20.00          "             BF 7257    
    22.23   Surfaced.  
                                                       
    25.04.43      
    00.00 Bay of Biscay  BF 7264    
      SW 2, Sea 1-2, 9/10, Vis. medium, hazy, medium-bright night    
           
           
           
Sun and Moon Data 23.04.43
Sun and Moon Data 24.04.43
Sun and Moon Data 25.04.43
 
- 78 -
 
           
           
           
    continued      
    25.04.43      
    04.00 Bay of Biscay  BF 7325    
      SW 2, Sea 1-2, 9/10, Vis. medium, medium-bright night, faint marine phosphorescence    
    06.05   Difference between dead reckoning and actual position after a navigation fix:  220°T, 3 nm.  
    07.08   Dived.  Proceeded submerged.  
    08.00 Bay of Biscay  BF 4987    
    12.00          "             BF 4985 Day's run:  Surfaced 87 nm, Submerged 38 nm.  
    16.00          "             BF 4991    
    20.00          "             BF 4968    
    22.16   Surfaced.  
    22.25   Difference between dead reckoning and actual position after a navigation fix:  90°T, 3 nm.  
                                                       
    26.04.43      
    00.00 Bay of Biscay  BF 5742    
      W 2-3, Sea 2, 3/10, Vis. medium, heavy marine phosphorescence, medium-bright night    
    04.00 Bay of Biscay  BF 5497    
      W 1, Sea 2, 2/10, Vis. medium, heavy marine phosphorescence, medium-bright night    
    06.33   Dived.  Proceeded submerged.  
    08.00 Bay of Biscay  BF 5574    
    12.00          "             BF 5572 Day's run:  Surfaced 84 nm, Submerged 38 nm.  
    16.00          "             BF 5547    
    20.00          "             BF 5547    
    22.24   Surfaced.  
                                                       
    27.04.43      
    00.00 Bay of Biscay  BF 5543    
      NNW 1-2, Sea 1-2, 5/10, Vis. medium, faint marine phosphorescence, medium-bright night    
    04.00 Bay of Biscay  BF 5533    
      NW 2, Sea 1, 6/10, Vis. good, medium-bright night, heavy marine phosphorescence    
           
           
           
Sun and Moon Data 25.04.43
Sun and Moon Data 26.04.43
Sun and Moon Data 27.04.43
 
- 79 -
 
           
           
           
    continued      
    27.04.43      
    06.20   Point Laterne.  Taken in convoy.  
    08.00 Lorient Approaches    
      NNW 1-2, Sea 0-1, 3/10, Vis. good    
    08.20   Released from convoy.  
    08.46 Lorient-Keroman Made fast Bunker K 17.  
        Day's run:  Surfaced 100 nm, Submerged 26 nm.  
        2nd War Patrol ended.  
                                      Completed, 27 April 1943  
                                              
                                                Kapitänleutnant  
                                              and Kommandant  
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
Sun and Moon Data 27.04.43

Appendices to U-518's KTB - click on the text at left to proceed to the documents
Chart Track chart covering entire war patrol                11 January - 27 April 1943
KTBMasch KTB Maschine

 
 
 

Commentary of the Befehlshabers der Unterseeboote

                                         to the K.T.B. of "U-518" (Wißmann) from 16.12.43 - 27.4.43.

 

1.) Concerning the operation on the independent on 11 February:   When the boat surfaced, the steamer could no longer be seen, even by plotting.  Boat should have kept in visual contact through the periscope.  The one-hour pursuit was too short.  By plotting the steamer could still not be heard.   The operation was not tenacious enough.
   
2.) Concerning the attack on the independent on 18 February:   The first fan was fired at too great range.
   
3.) Concerning the convoy operation 28 February - 2 March:  The good attack opportunity at the sighting of the convoy should have been used.  Maintain visual contact on the surface as long as possible.  The time up to moonrise should have been used for attacking and not for searching.  All shots were made at too great a range.  The irregular run of the torpedoes which may have been to a lack of care would not have had such a crucial effect at lower range.  The decision to give up the convoy was wrong.  There lay the greatest opportunity.  Before an aircraft the boat needs to proceed at periscope depth, one does not go deep.  The pursuit was too timid.
   
4.) Concerning the convoy sighting on 18 March:  The boat should have surfaced and pursued.  The assumption of active air surveillance must not lead to inactivity.
   
5.) Concerning the convoy attack on 19 March:  One must be able to disregard whether or not the moon sets in a quarter of an hour and dark clouds cover the sky.  The chance to reach attack position at the convoy or later on the independent was not exploited.
   
  The Kommandant, proven on his 1st war patrol, perhaps under influence of the climate, may not have understood to exploit the great opportunities which nowadays are rarely presented to a boat.  The commander must find within himself the attitude displayed on the first war patrol.
   
Accredited Successes:  
1 Freighter 8000 GRT sunk.
1 Freighter 7000 GRT sunk.
1 Tanker 7659 GRT sunk.
1 Steamer 1688 GRT sunk.
 
 

For the Befehlshaber der Unterseeboote

  - The Chief of the Operations Department -
                      
 
 
 


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