U-156 - 2nd War Patrol

Translation by Jerry Mason with the help of Andi Forster

Departed
Date
Arrived
Date
Days at Sea
Lorient
19 January 1942
Lorient
17 March 1942
58

 

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 Hit
Date
KTB Time
Position
Ship
Tons
Nationality
Convoy
16 Feb 42
08.01
12°25'N, 69°55'W
PEDERNALES (damaged)
4,317
British
16 Feb 42
08.03
12°25'N, 69°55'W
ORANJESTAD
2,396
British
16 Feb 42
09.16 - 09.30
12°30'N, 70°00'W
ARKANSAS (damaged)
6,452
American
20 Feb 42
11.31- 12.00
14°39'N, 62°33'W
DELPLATA
5,127
American
25 Feb 42
02.19 - 06.21
17°33'N, 66°57'W
LA CARRIERE
5,685
British
27 Feb 42
10.35
19°50'N, 69°40'W
MACGREGOR
2,498
British
ON-60
28 Feb 42
11.17
17°33'N, 66°57'W
OREGON
7,017
American
 
 Total = 33,492
 
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.


 
 
     
                                                                                                                   
     
     
     
     
                             
     
     
                                                                                                        
     
     
     
     
     
     
     
     
     
     
     
     
     
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Click the flag to view the above page from the original German KTB
 
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Kriegstagebuch
==========
of U-boat "U-156"
=============
2nd War Patrol.
 
           
           
                Beginning:  11 January 1942.  
                Ending:       17 March  1942.  
           
           
           
           
           
           
                        Kommandant: Kapitänleutnant    Hartenstein.  
           
           
     
:
Distribution: 2 x O.K.M.
  1 x B.d.U.
  1 x 2.A.d.Uboote
  1 x 2.U.-Flottille
 
           
           
      Produced 25.03.42 2.Ufl. 5x    
      created    
                          
           
           
           
 
- 2 -
 
           
           
           
           
    11.01.42      
    to Lorient Upkeep and armament.  
    18.01.42      
                                                         
    19.01.42 Lorient Departed.  
        Followed a sperrbrecher to Point L with "U-67" and "U-502".  
        Continued without escort to Rosabella and Cedernwald.  
    20.00 BF 6184 Mission per Operations Order 51:  
      WNW 2, Sea 1, Vis. 2-3 nm, hazy Surprise, simultaneous attack on the traffic directly off the West Indian Islands Aruba and Curacao, Codeword: Neuland.  Attack 5 hours before sunrise.  
        To 50°W normal attack instructions, west of 50° only against battleships and aircraft carriers.  
                                                         
    20.01.42      
    00.00 BF 6458    
      NW 3, Sea 2, Vis. 3-4 nm, overcast    
    02.03 Point Tanne Heading for BF 71.  Speed HF.  
    04.00 BF 5598    
      NW 3-4, Sea 3, Vis. 3-4, 1/3 overcast    
    04.10 BF 5598 Two white lights bearing 340°T, range 2 nm and 252°T, range 4 nm.  Probably fishing vessels.  
    08.00 BF 5824    
      NW 4, Sea 3, overcast, mist, Vis. 4-5 nm, WNW-Swell 3    
    09.00 BF 5818 Morning navigation fix:  46°14'N,  5°16.6'W.  
    09.06 BF 5818 Dived to proceed submerged per orders.  
    12.00 BF 5841 Day's run:  Surfaced = 155.6 nm  
                         Submerged = 6.2 nm = 161.8 nm.  
    16.00 BF 5766    
    19.58 BF 5765 Surfaced to proceed on the surface.   253°, HF.  
    20.00 BF 5763 Evening navigation fix:  46°01'N,  5°48'W.  
      WNW 1-2, Sea 1, light overcast, Vis. 8 nm Corrected ship's position after fix:  6.2 nm, 160°.  
                                                         
    21.01.42 Bay of Biscay    
    00.00 BF 5772    
      NWbyW 1, Sea 1-2, lightly cloudy, rain showers, Vis. 3-4 nm, dark    
    04.00 BF 8112    
           
Sun and Moon Data 19.01.42
Sun and Moon Data 20.01.42
Sun and Moon Data 21.01.42
 
- 3 -
 
           
           
           
    continued      
    21.01.42      
    08.00 BF 7319    
      SW 1-2, Sea 1, nearly overcast, SW-Swell 2, Vis. 5 nm, light rain    
    09.00 BF 7341 Morning navigation fix:  45°15.6'N  
                                              9° 01'W.  
    09.31 BF 7263 Dived to proceed submerged.  253°,  LF  
    12.00 BF 7256 Day's run:  Surfaced = 149.2 nm  
                         Submerged = 35.0 nm = 184.2 nm.  
    16.00 BF 7254    
      S 5, Sea 4, nearly overcast, S-Swell 2, Vis, 10 nm    
    20.00 BF 7248 lower edge    
    20.13 BF 7248 Surfaced to proceed on the surface.  
      S 1, Sea 1, cross Swell, overcast, Vis. 8 nm    
                                                         
    22.01.42 140 nm Northwest of Finisterre    
    00.00 BF 7182    
      E 1, Sea 0-1, W-Swell 1-2, lightly cloudy, Vis. 6 nm    
    02.00 BF 7176 On course 231° heading for a point 40 nm southeast of Santa Maria (Azores).  
    04.00 BE 9633 right edge    
    08.00 BE 9655    
      NE 2, Sea 1-2, nearly overcast, NNE-Swell 3, Vis. 3 nm    
    09.35 BE 9681 Morning navigation fix:  44° 4.5'N  
                                            12° 23.0'W.  
    12.00 BE 9912 Day's run:  Surfaced = 144.4 nm  
      NNE 2, Sea 2, N-Swell 2, cloudy and overcast, Vis. 14 nm                  Submerged = 24.6 nm = 169 nm.  
      Continued on one Diesel 2 x LF (250 RPM).  
    16.00 BE 9862 right edge    
      NbyE 3, Sea 2, N-Swell 3, Vis. 12 nm, 5/10 overcast    
    16.48   Navigation fix:  43° 22'N,  13° 16'W.  
    20.00 BE 9883    
      N 1, Sea 1, nearly overcast, N-Swell 2, Vis. 8 nm    
    21.45   Short Signal:  delivered on Coastal Circuit:  
        My position is quadrant BE 98.    "U-156".  
        (Was understood and confirmed.)  
                                                         
    23.01.42 West of Vigo    
    00.00 CG 1132    
      NW 1-2, Sea 1-2, lightly cloudy, NbyW-Swell 2, Vis. 5 nm, dark    
           
           
Sun and Moon Data 21.01.42
Sun and Moon Data 22.01.42
Sun and Moon Data 23.01.42
 
- 4 -
 
           
           
           
    continued      
    23.01.42      
    04.00 CG 1152    
      NbyW 2-3, Sea 2, overcast, N-Swell 2, Vis. 3 nm    
    08.00 CG 1172    
      NNW 1, Sea 1, partial overcast, Vis. 4 nm    
    09.57 CF 3396 Crash dive for training.  
    10.06   Surfaced.  Continued transit.  Switched to Ireland Circuit.  
    12.00 CF 339x [probably CF 3397] Day's run:  Surfaced = 160.1 nm  
                         Submerged = 0.4 nm = 160.5 nm.  
    15.15 CF 3628 Noon Latitude 41° 45.9N  
    16.00 CF 3627 Navigation fix:  41° 43'N  
      WNW 2-3, Sea 2, NW-Swell 3, Vis. 12 nm, overcast                         15 °50'W.  
    20.00 CF 3569 right edge    
      W 1, Sea 1, nearly overcast, Vis. 8 nm, WNW-Swell 2    
                                                         
    24.01.42      
    00.00 CF 3589    
      W 1-2, Sea 1-2, lightly cloudy, Vis. 6 nm, bright moon    
    04.00 CF 3818    
      WNW 2-3, Sea 3, WNW-Swell 3, Vis. 5 nm, lightly cloudy    
    08.00 CF 3768    
      W 2, Sea 3, partial overcast    
    12.00 CF 3787 Day's run:  171.5 nm.  
      W 3, Sea 3, nearly overcast, Vis. 12 nm, WNW-Swell 3    
    16.00 CF 5339    
      WbyN 3, Sea 2, overcast, Vis. 12 nm, WNW-Swell 3    
    19.05 CF 5356  lower edge Crash dive for training.  
    19.15   Surfaced.  Continued at economical speed, 1 Diesel 2 x LF.  
    20.00 CF 5358 right edge    
      WNW 2, Sea 2, overcast, Vis. 8 nm    
                                                         
    25.01.42      
    00.00 CF 5378    
      W 2, Sea 2, overcast, Vis. 4 nm, bright night    
    04.00 CF 5535    
      WbyN 3-4, Sea 2, WNW-Swell 3, light haze, Vis. 3 nm    
    08.00 CF 5555    
      W 2, Sea 2, overcast, Vis. 3 nm    
    12.00 CF 5575 Day's run:  Surfaced = 160.4 nm  
      WbyS 2, Sea 2, WbyN-Swell 2, Vis. 12 nm, overcast                  Submerged = 0.6 nm = 161.0 nm.  
           
Sun and Moon Data 23.01.42
Sun and Moon Data 24.01.42
Sun and Moon Data 25.01.42
 
- 5 -
 
           
           
           
    continued      
    25.01.42      
    16.00 CF 5734    
      W 2-3, Sea 2, WNW-Swell 2-3, overcast, Vis. 12 nm    
    20.00 CF 5754    
      SWbyW 1, Sea 1, overcast, Vis. 6 nm, NWbyW-Swell 2    
                                                         
    26.01.42      
    00.00 CF 5771    
      WbyS 1, Sea 1, overcast, Vis. 4 nm    
    04.00 CF 7323    
      WSW 1, Sea 2, overcast, dark, Vis. 3 nm    
    08.00 CF 7343    
      SW 1, Sea 1, overcast, Vis. 3 nm, very dark    
    12.00 CF 7293 Day's run:  Surfaced  162 nm.  
      SW 1, Sea 1, overcast, Vis. 12 nm, W-Swell 2    
    12.40 CF 7292 Crash dive for training.  
    13.18   Surfaced.  Continued transit.  
    16.00 CF 7582 lower-right    
      SW 2, Sea 1-2, W-Swell 2, overcast    
    16.18 CF 7522 Santa Maria in sight bearing 298°T, distance 52 nm.  
    20.00 CF 7542    
      SWbyS 1, Sea 1, overcast, Vis. 8 nm, W-Swell 2    
    20.20 CF 7544 Navigation fix by running fix.  
    22.45 35° 59'N On passing 25° W headed on course 248° on the Great Circle route between Antigua and Guadeloupe (Lesser Antilles), because I suspect there is less traffic here than in the Anegada Passage, therefore with the covert advance, less time required for avoidance and diving maneuvers.  
      25° 00'W  
                                                         
    27.01.42      
    00.00 CE 9683    
      SSW 1, Sea 1, overcast, Vis. 5 nm    
    04.00 CE 9675    
      SW 2, Sea 1-2, nearly overcast, light haze, Vis. 5 nm    
    08.00 CE 9834    
    10.10 CE 9851 Navigation fix:  35° 22.7'N  
                                26° 36'W.  
    12.00 CE 9845 Day's run:  Surfaced = 187.8 nm  
                         Submerged = 2.7 nm = 190.5 nm.  
        Continued transit on 1 Diesel at LF.  
    16.00 CE 9768 Noon fix:  35° 13.9'N  
      SbyE 2-3, Sea 2, S-Swell 2, heavily cloudy, Vis. 12 nm                 27° 21.0'W.  
    19.55 CE 9785 Crash dive for training.  
    20.06 SbyE 2-3, Sea 2, S-Swell 2, cloudy Surfaced,  continued transit.  
           
           
           
           
Sun and Moon Data 25.01.42
Sun and Moon Data 26.01.42
Sun and Moon Data 27.01.42
 
- 6 -
 
           
           
           
    continued      
    27.01.42      
    22.39 CE 9779 Incoming radio message:  
        "Hartenstein" switch Greenland Circuit on 28 January at 08.00 hours.  
                                                         
    28.01.42 South of the Azores    
    00.00 DG 2311    
      SE 2, Sea 2, Vis. 6 nm    
    04.00 DG 2235    
      SE 2-3, Sea 2, SSE-Swell 2, Vis. 6 nm    
    08.00 DG 2227 Switched to Greenland Circuit.  
    10.25 DG 2242 Morning navigation fix:  34°24.0'N  
                                            29°25.0'W.  
    12.00 DG 2244 Day's run:  Surfaced = 163.04 nm  
      SE 2-3, Sea 2-3, Swell 2, Vis. 12 nm, bright                  Submerged = 0.96 nm = 164 nm.  
    16.00 DG 2167    
      SE 2, Sea 2-3, Swell 2, Vis. 12 nm, bright    
    16.11 DG 2167 Noon fix:  34° 12.7'N  
                        29° 27.0'W.  
    20.00 DG 2172    
      SSE 3, Sea 2-3, SSE-Swell 3, Vis. 12 nm    
    20.35   Test dive.  
    21.05 DG 2172 Surfaced.  Continued transit on course 245°.  
                                                         
    29.01.42 Central Atlantic    
    00.00 DG 2411 Transit on the Great Circle route is not very successful.  The boat is constantly set to the south despite large corrections.  
      SSE 2-3, Sea 2, SSE-Swell 2, Vis. 6 nm  
    04.00 DG 1653    
      SSE 2, Sea 1-2, SSE-Swell 2, Vis. 5 nm    
    08.00 DG 1658    
      SSE 2, Sea 1, SSE-Swell 2, Vis 6 nm    
    12.00 DG 1595 Day's run:  Surfaced = 142.29 nm  
      SSE 1-2, Sea 1, SSE-Swell 1-2, Vis. 12 nm                  Submerged = 1.71 nm = 144.0 nm.  
    16.00 DG 1822    
      SSE 1-2, Sea 1-2, SSE-Swell 1-2, Vis. 12 nm    
    20.00 DG 1842    
      SSE 1-2, Sea 1-2, SSE-Swell 2, Vis. 12 nm    
                                                         
    30.01.42      
    00.00 DG 1767    
      SE 2-3, SSE-Swell 2, Sea 1, Vis. 6 nm    
    04.00 DG 1775    
      SE 2-3, SSE-Swell 2, Sea 2-3, Vis. 5 nm, 2/3 overcast    
           
           
Sun and Moon Data 27.01.42
Sun and Moon Data 28.01.42
Sun and Moon Data 29.01.42
Sun and Moon Data 30.01.42
 
- 7 -
 
           
           
           
    continued      
    30.01.42      
    08.00 DF 3999    
      SE 3, Sea 2-3, SSE-Swell 2-3, Vis. 5 nm, overcast    
    10.30 DF 6355 Morning navigation fix:  31° 57.0'N  
                                            34° 36.0'W.  
    12.00 DF 6327 Day's run:  Surfaced = 156 nm.  
      SE 3, Sea 3, SSE-Swell 3, Vis. 12 nm, bright    
    16.00 DF 6346    
      SE 3, Sea 3, SSE-Swell 3, Vis. 12 nm, bright    
    16.34   Noon Latitude:  31° 41.1'N  
    19.47 DF 6268    
      SE 3, Sea 3, SSE-Swell 3, Vis. 12 nm Crash dive for training.  
    20.00 DF 6268    
    20.17 DF 6268 Surfaced.  Continued transit on the Great Circle route on course 245°.  
      SE 3, Sea 2-3, SSE-Swell 3, Vis. 12 nm  
    22.30 DF 6291 Evening navigation fix:  31° 26.0'N,   
      SE 3, Sea 2-3, SSE-Swell 3, Vis. 12 nm                                    35° 52.0'W.  
                                                         
    31.01.42      
    00.00 DF 6285    
      SE 2-3, Sea 3, SSE-Swell 3, Vis. 6 nm    
    06.00 DF 6513    
      SE 2-3, Sea 3, SSE-Swell 3, Vis. 6 nm    
    08.00 DF 6436    
      SE 2, Sea 3, SSE-Swell 3, Vis. 6 nm, 1/3 overcast    
    10.50 DF 6437 Morning navigation fix:  30° 52.0'N  
                                            37° 11.0'W.  
    12.00 DF 6453 Day's run:  Surfaced = 140.17 nm  
      S 2, Sea 2-3, SSE-Swell 2-3, Vis. 12 nm                  Submerged = 1.83 nm = 142 nm.  
    16.00 DF 6448    
      SSW 2, Sea 2-3, SSE-Swell 2-3, Vis. 10 nm, overcast [hand written] adjacent meridian latitude.  
    17.00 DF 6472 Noon Latitude:  30° 30.2'N  
    20.00 DF 5696    
      SSW 2, Sea 3, SSE-Swell 2-3, Vis. 12 nm, overcast    
                                                         
    01.02.42      
    00.00 DF 5931    
      SSW 2-3, Sea 1-2, Vis. 5 nm, overcast    
    04.00 DF 5927    
      SSW 3, Sea 2, Vis. 5 nm, overcast, rain showers    
    08.00 DF 5947    
      SSW 3, Sea 2-3, Vis. 5 nm, overcast    
           
           
           
Sun and Moon Data 30.01.42
Sun and Moon Data 31.01.42
Sun and Moon Data 01.02.42
 
- 8 -
 
           
           
           
    continued      
    01.02.42      
    10.50 DF 5892 Morning navigation fix:  29° 33.0'N  
      W 3, Sea 2, Vis. 12 nm, bright, SSW-Swell 2-3                                     39° 35.0'W.  
    11.30 DF 5895 Test dive.  
    11.45   Surfaced.  Continued transit on course 245°.  
    12.00 DF 5894 Day's run:  Surfaced = 131.3 nm  
      WNW 3, Sea 2, Swell 2, Vis. 12 nm, bright                  Submerged = 0.7 nm = 132.0 nm.  
    16.00 DF 6473    
      NNW 2, NW-Swell 3, Sea 2, Vis. 12 nm, bright    
    20.00 DF 8221    
      NNW 2-3, NW-Swell 3, Sea 2-3, Vis. 12 nm    
    21.00 DF 8216 Came to course 242°.  
    23.00 DF 8163 Short Signal delivered on Ireland Circuit:  
        29° Latitude - 191 cbm.  U-156.  
        Uunderstood by home, but not interpreted.  Because the passing report was ordered for 40° W, I believe I have given own location unambiguously. (Quadrant designation would have required an additional group.)  
    23.30 DF 8163 Evening navigation fix:  29° 05.0'N,   
      NNW 2-3, NW-Swell 3, Sea 2, Vis. 10 nm, 1/2 overcast                                    40° 23.0'W.  
                                                         
    02.02.42      
    00.00 DF 8162 Short Signal delivered on Norddeich alternate frequency:  
      NNW 3, NW-Swell 3, Sea 1-2, Vis. 5 nm Have reached the prescribed line for delivery of message to control. 191 cbm  
    04.00 DF 8182                                                             U-156.  
      NNW 2, Sea 1, lightly cloudy, Vis. 15 nm, NW-Swell 3 Was not confirmed.  
    07.10   Same Short Signal delivered on Ireland Circuit.  Copied and confirmed.  
    08.00 DF 8178    
      N 1, Sea 1, lightly cloudy, Vis. 5 nm, NbyW-Swell 4    
    11.00   Morning navigation fix:  28° 22.0'N  
                                            41° 34.0'W.  
    12.00 DF 7635 Day's run:  Surfaced = 154 nm.  
      N 1, Sea 1, lightly overcast, Vis. 10 nm, N-Swell 4    
    16.00 DF 7682 The gyro compass reads approximately 10° off as a result of failed support and sagging of the gyroscope ball.  Error removed by re-torque of the contact screws, exchanging the ball and replacing the supporting fluid.  
      NbyE 2, Sea 1, 3/10 overcast, bright, Vis. 12 nm, NbyE-Swell 3  
    20.00 DF 7679    
      E 1, Sea 1, lightly cloudy, Vis. 12 nm    
    22.50 DF 7915 Evening navigation fix:  27° 35.0'N,   
                                           42° 42.5'W.  
                                                         
           
Sun and Moon Data 01.02.42
Sun and Moon Data 02.02.42
 
- 9 -
 
           
           
           
           
    03.02.42 Central Atlantic    
    00.00 DF 7836    
      ESE 1, Sea 1, lightly cloudy, NbyE-Swell 2-3    
    04.00 DF 7858    
      ENE 2, Sea 1, cloudy, Vis. 5 nm, bright moonlight    
    08.00 DF 7875    
      EbyS 1, Sea 1, cloudy, Vis. 5 nm, NEbyN-Swell 3    
    11.00 DR 1113 Morning navigation fix:  26° 31.0'N  
                                            44° 03.0'W.  
    11.52   Crash dive for training.  
    12.00 DR 1114 Day's run:  Surfaced = 169.4 nm  
                         Submerged = 0.6 nm = 170 nm.  
    12.20 DR 1114 Surfaced, continued transit.  
      E 1, Sea 1, overcast, Vis. 10 nm, ENE-Swell 2-3    
    16.00 DQ 3337    
      EbyN 3, Sea 1-2, ENE-Swell 2-3, overcast, Vis. 12 nm, rain showers    
    20.00 DQ 3346    
      EbyN 2, Sea 1, nearly overcast, EbyN-Swell 2, Vis. 12 nm    
    23.00 DQ 3288 Evening navigation fix:  26° 11'N,   
                                           45° 10'W.  
                                                         
    04.02.42      
    00.00 DQ 3287 Conducted an analysis of the gyroscope errors; conclusion:   irregular gyroscope - error between 1.5 and 9°.  As a result, failure of the Great Circle route.  
      E 1, Sea 1, partly overcast, Vis. 5 nm  
    04.00 DQ 3211    
      S 2, Sea 1, Vis. 6 nm, nearly overcast    
    08.00 DQ 3274    
    11.25 DQ 3423 Morning navigation fix:  25° 44'N  
                                            46° 25'W.  
    12.00 DO 3422 Day's run:  Surfaced = 141 nm  
      SSW 2, Sea 1-2, nearly overcast, Vis. 8 nm                  Submerged = 1 nm = 142 nm.  
    15.00   Diesel compressor failed.  Head and cylinder body for stage 2 and 3 parted.  Repair by own means is not possible.  
    16.00 DQ 3415    
      S 2, Sea 2, overcast, Vis. 12 nm, occasional rain    
    17.00   Came to course 236°.  
    18.57   Radio message received:  To Hartenstein, Müller, Rosenstiel.  
        "Neuland 176.  Attack areas in accordance with Operations Order Paragraph 10."  
    20.00 DQ 2662    
      SbyW 2, Sea 2, overcast, Vis. 12 nm    
                                                         
    05.02.42      
    00.00 DQ 2681    
      SbyW 2, Sea 1-2, nearly overcast, Vis. 5 nm, very dark    
           
Sun and Moon Data 03.02.42
Sun and Moon Data 04.02.42
Sun and Moon Data 05.02.42
 
- 10 -
 
           
           
           
    continued      
    05.02.42      
    00.00 DQ 2677    
      SSW 2, Sea 2, overcast    
    08.00 DQ 2829    
      SSW 2-3, Sea 2, overcast, Vis. 5 nm    
    12.00 DQ 2848 Day's run:  Surfaced = 141 nm.  
      SW 2, Sea 1-2, overcast, Vis. 10 nm    
    16.00 DQ 2795    
      N 3, Sea 2, overcast, Vis. 11 nm    
    19.58 DQ 5124 Dived.  
    20.13 NbyE 3-4, Sea 2-3, overcast, short Swell, Vis. 10 nm Surfaced.  
    21.15 DQ 5142 Navigation fix:  23° 38'N  
                                49° 24'W.  
        Correction 20 nm, 185°.  
                                                         
    06.02.42    
    00.00 DQ 5145    
      NNE 2-3, Sea 2, overcast, dark    
    04.00 DQ 4391    
      ENE 2, Sea 2, overcast, dust rain    
    08.00 DQ 4613    
      NE 3, Sea 2, overcast, light rain    
    10.35 DQ 4617 Morning navigation fix:  22° 39'N  
                                            50° 40'W.  
    12.00 DQ 4562 Day's run:  Surfaced = 155.1 nm  
                         Submerged = 0.9 nm = 156 nm.  
    16.00 DQ 4581    
    20.00 DQ 4732    
      NE 4, Sea 3, NNE-Swell 3, overcast, occasional rain, Vis. 8 nm                                                  
         
    07.02.42 650 nm Northeast of Guadeloupe  
    00.00 DQ 4728    
      NE 5, Sea 4, overcast, Vis. 8 nm    
    04.00 DQ 4747    
      NE 3, Sea 3, overcast, Vis. 5 nm    
    08.00 DP 6997    
      NE 2, Sea 2, 4/10 overcast, Vis. 5 nm    
    12.00 DP 9315 Day's run:  Surfaced = 159 nm.  
      NNE 2, Sea 2, lightly cloudy    
    15.10 DP 9261 Navigation fix:  20° 56'N  
                                53° 20'W.  
    16.00 DP 9256    
      NNE 2, Sea 2, lightly cloudy, Vis. 12 nm, NbyE-Swell 2    
    18.53 -   Crash dive for training.  Depth keeping practice including disorders and failures.  
    20.31 DP 9257  
      NNE 2, Sea 1-2, lightly cloudy, Vis. 12 nm    
    23.55 DP 9274    
        Evening navigation fix:  20° 30'N,   
                                           54° 03'W.  
                                                         
           
           
Sun and Moon Data 05.02.42
Sun and Moon Data 06.02.42
Sun and Moon Data 07.02.42
 
- 11 -
 
           
           
           
           
    08.02.42      
    00.00 DP 9274    
      NNE 1, Sea 1, lightly cloudy, Vis. 10 nm    
    04.00 DP 9426    
      NNE 1, Sea 1, partly overcast, Vis. 5 nm, NbyE-Swell 1    
    08.00 DP 9445    
      NE 1-2, Sea 1, lightly cloudy, Vis. 6 nm, NEbyN-Swell 1    
    11.55 DP 8667 Morning navigation fix:  19° 45'N  
                                            55° 13'W.  
    12.00 DP 8667 Day's run:  Surfaced = 151.6 nm  
      NNE 1, Sea 1, lightly cloudy, Vis. 10 nm                  Submerged = 5.4 nm = 157 nm.  
    16.00 DP 8667    
      NNE 1, Sea 1, lightly cloudy, Vis. 12 nm    
    18.40 DP 8915 Dived for steamer bearing 265°T.  Steamer course 60°; 5500 GRT, painted olive-gray, cruiser stern, stern artillery, 2 masts, 2 paired loading masts before and aft of the bridge superstructure.  No camouflage, topmasts not removed, no flags, no neutral markings, 4 lifeboats swung out.  Apparent light zig zagging up to 20° off the general course 60°.   Last observed course 80°.  
        Not attacked in accordance with Operations Order.  
    20.46 DP 8918 Surfaced.  Continued transit.  
      NNE 2, Sea 1, lightly cloudy, Vis. 12 nm    
                                                         
    09.02.42      
    00.00 DP 8864 Evening navigation fix:  18° 57'N,   
      NE 1, Sea 1, Vis, 8 nm, lightly cloudy                                    56° 02'W.  
    03.00   Came to course 244°.  
    04.00 DP 8887    
      E 1, Sea 1, lightly cloudy, Vis. 6 nm    
    08.00 EE 2133    
      E 1, Sea 1, lightly cloudy, Vis. 5 nm    
    12.00 EE 2129 Day's run:  Surfaced = 143.2 nm  
      E 1, Sea 1, lightly cloudy, Vis. 6 nm                  Submerged = 5.8 nm = 149.0 nm.  
    16.00 EE 2144    
      EbyN 1, Sea 1, lightly cloudy, Vis. 12 nm    
    20.00 EE 1383    
      ENE 1-2, Sea 1, 1/10 overcast, Vis. 12 nm    
    22.06   Crash dive for training.  Exercises for disorders and failures.  
    23.22   Surfaced.  
                                                         
           
Sun and Moon Data 08.02.42
Sun and Moon Data 09.02.42
 
- 12 -
 
           
           
           
           
    10.02.42 Northwest of Guadeloupe    
    00.00 EE 1378    
      NbyE 3, Sea 1, lightly cloudy, Vis. 8 nm    
    00.20 EE 1611 Evening navigation fix:  17° 37'N,   
                                           58° 33'W.  
    02.50   Came to course 251°.  
    04.00 EE 1526    
      NbyE 2, Sea 1-2, lightly cloudy, Vis. 5 nm    
    08.00 EE 1541    
      ENE 1-2, Sea 1, lightly cloudy, Vis. 6 nm    
    12.00 EE 1459 Morning navigation fix:  17° 05'N  
      ENE 3, Sea 1, lightly cloudy, Vis. 8 nm                                     59° 49'W.  
      Correction 9.5 nm in 218.8°.  
        Day's run:  Surfaced = 162.8 nm  
                         Submerged = 3.2 nm = 166.0 nm.  
    16.00 EE 1474    
      NE 2-3, Sea 1, cloudy, Vis. 12 nm    
    20.00 ED 3697    
      NNE 2, Sea 1, lightly cloudy, Vis. 12 nm    
    21.30 ED 3922 Dived for aircraft to the north.  Aircraft flies back and forth, probably escort for a steamer.  Confirmed by sound bearings moving to the west, to the right and left of the bearing high-speed turbines (destroyer?) heard perfectly.  
        Steamer bearing 150°T on course 350°, 5-6000 tons, white-yellow masts, bright yellow funnel with black ring.  No flags, no armament identified.  Funnel 1-1/2 x bridge, 4 ventilator heads aft of the funnel.  The formula:  i1i0si1.  
        Apparently Brazilian neutrality markings on the hull.  
        Remained submerged; intention: pass through the Guadeloupe channel at HF in darkness.  
                                                         
    11.02.42 Guadeloupe Passage    
    00.31 ED 3915 Surfaced.  Established ship's position from beacons.  Passed through Guadeloupe Passage on the French side.  
      NNE 3, Sea 1, cloudy, Vis. 8 nm  
    04.00 ED 3852    
      N 2, Sea 1, Vis. 6 nm, partly overcast    
    08.00 ED 3767    
      NNE 2, Sea 1, lightly overcast, Vis. 6 nm    
    12.00 ED 3775 Day's run:  Surfaced = 184.8 nm  
      NEbyE 3-4, Sea 2, lightly cloudy, Vis. 8 nm                  Submerged = 6.2 nm = 191 nm.  
      Morning navigation fix:  15° 59.1'N  
                                            62° 54.8'W.  
    13.16 ED 3777 Dived for steamer bearing 225°T.  
        Steamer's course 5.  Black hull, white superstructure, yellow masts, black funnel with blue ring, unarmed, no further neutrality markings and name on the bridge are no longer recognizable.  1bisi1i.  
    15.05 ED 2999 Surfaced.  Continued transit.  
           
Note:  the "formulas" on this page are the sequence of uprights as set forth in Gröner's Die Handelsflotten der Welt.  For the two ships described on this page this is kingpost/mast/kingpost/gap/stack/kingpost/mast and mast/bridge/kingpost/stack/kingpost/mast/kingpost respectively.  See the excerpt from Gröner in the Armament note pages in the KTB section.
Sun and Moon Data 10.02.42
Sun and Moon Data 11.02.42
 
- 13 -
 
           
           
           
    continued      
    11.02.42      
    16.00 ED 5335    
      ENE 3-4, Sea 2, partly overcast, Vis. 12 nm    
    20.00 ED 5328    
      ENE 3, Sea 2, partly overcast, Vis. 12 nm    
    23.10 ED 5341 Steamer in sight bearing 228°T, course 330°, avoided to the south on the surface.  
                                                         
    12.02.42 Caribbean Sea    
    00.00 ED 5265    
      ENE 3, Sea 1-2, nearly overcast, Vis. 10 nm    
    01.00 ED 5267 Evening navigation fix:  15° 17.6'N,   
                                           64° 08.2'W.  
    04.00 ED 5282    
      ENE 3, Sea 1-2, partly overcast, Vis. 5 nm    
    04.45 ED 5284 White light bearing 335°T, steamer on course 80°.  
    08.00 ED 5433    
      ENE 2, Sea 1, lightly cloudy, Vis. 5 nm    
    12.00 ED 5419 Day's run:  Surfaced = 153.7 nm  
      EbyN 3, Sea 2, cloudy, Vis. 6 nm                 Submerged = 13.3 nm = 167 nm.  
    12.20   Morning navigation fix:  14° 38.5'N  
                                            65° 35.8'W.  
    16.00 ED 4665    
      ENE 4, Sea 2, lightly cloudy, Vis. 12 nm    
    20.00 ED 4679    
      ENE 3, Sea 2, cloudy, Vis. 12 nm    
                                                         
    13.02.42      
    00.00 ED 4834    
      ENE 2, Sea 1, cloudy, Vis. 10 nm    
    01.00 ED 4828 Evening navigation fix:  13° 55'N,   
                                           67° 09'W.  
    0240      
           
           
           
           

Note: the bottom of page 13 (covering the remainder of 13 February) is missing

Sun and Moon Data 11.02.42
Sun and Moon Data 12.02.42
Sun and Moon Data 13.02.42
 
- 14 -
 
           
           
           
           
    14.02.42 Caribbean Sea    
    00.00 EC 9348    
    01.16 EC 9347 Surfaced.  Headed for the southeast point of Aruba.  Seroe Colorado (Aruba) lighthouse in sight.  
      EbyN 5, Sea 4, partly overcast, Vis. 6 nm  
    04.00 EC 9289    
      ENE 4, Sea 3, partly overcast, Vis. 4 nm    
    05.30   Colorado-lighthouse abeam 1 nm to starboard, on course 270°.  
        Ran 1 nm off the coast of Nicolas harbor, passed the port entrance 900 meters distant at low speed, explored harbor facilities.  In the harbour 4 big tankers, in the roadstead 3 small tankers.  Works brightly-illuminated.  Arrivals and departures even at night.  
    06.00   Ran northwest at LF off shore towards Oranjustad.  
    06.40 Off Oranjustad Off harbor entrance.  The habor is not very busy.   
    06.47 Hooiberg 331°, 5.5 nm Evaded a guard vessel.  
        At 07.00 hours positioned off Oranjustad.  The pier is empty.  
    07.30 Northwest Point 30°, 3 nm Departed on westerly course exploring the shipping lanes.  
    08.19 ENE 4, Sea 3, heavily cloudy, Vis. 5 nm Steamer in sight bearing 290°T on course 280°.  Came to course 105°, headed for Oranjustad.  
    09.30 Northwest Point 80°, 17 nm    
    12.00 Northwest point 52°, 5 nm Day's run:  Surfaced = 112 nm  
      ENE 5, Sea 4, partly overcast, Vis. 8 nm                  Submerged = 21 nm = 133 nm.  
    12.21 Getting light Dived to observe entrance to Oranjustad, light traffic.  
    12.48 Northwest Point 44.5°, 4.4 nm Remained submerged until darkness.  
    23.00   Tanker in sight bearing 170°T on course 250°, outbound from Nicolas harbour.  From the airport 2-4 2-motored aircraft.  Lively air traffic through the early morning.    
                                                         
    15.02.42 Off Aruba    
    01.50 Colorado 101°, 11 nm Surfaced.  On course 170° on the shipping route from Maracaibo-Nicholas Harbour.  
      ENE 5 nm, Sea 4, nearly overcast, Vis. 6 nm  
    02.30 Colorado 90°, 12 nm Attack on tanker for training.  Departed on easterly course.  
    10.00   Headed for Nicholas Harbor.  
    12.00 ENE 5, Sea 4, nearly overcast, Vis. 10 nm Day's run:  Surfaced = 27 nm  
                       Submerged = 11 nm = 38 nm.  
           
           
Sun and Moon Data 14.02.42
Sun and Moon Data 15.02.42
 
- 15 -
 
           
           
           
    continued      
    15.05.42      
    12.20 Colorado 32°, 3 nm Dived to observe the entrance to Nicholas Harbor.  Brisk traffic.  Harbor is well occupied.  Afterwards set off to the west.  
    12.40   Officer-Only radio message received:  To Neuland boats:   
        1.)  Primary task is attack on shipping.  
        2.)  After such attacks have been carried out, artillery may be used against land targets from the morning of Neuland day, if there are any favorable opportunities.  
        3.)  If no shipping targets are encountered, artillery may be used against land targets from the evening of Neuland day.  
    16.00 Hooiberg 54°, 9 nm    
    18.55 Hooiberg 72°, 22.5 nm Surfaced.  Proceeding on westerly course.  
      E 5, Sea 4, lightly cloudy, Vis. 12 nm    
    20.00 Hooiberg 69°, 27 nm Came about.  Heading for the NW-edge of Aruba at slow speed.  
      E 5, Sea 4, lightly cloudy, Vis. 12 nm Modern passenger-freighter 7000 GRT in sight.  Making for Nicolas Harbor or Willemstad on course 120°.  Evaded several yachtsmen.  
                                                         
    16.02.42      
    00.00 Hooiberg 72°, 21 nm    
      EbyN 5, Sea 4, lightly cloudy, Vis. 6 nm    
    04.00 Hooiberg 82°, 9 nm    
    05.00         "      92°, 7 nm Heading for Oranjustad on easterly course.  
    06.14   Off Oranjustad.  An illuminated tanker is loading. Proceeding to Nicolas Harbour.  
    07.35   Off Nicolas Harbour.  Approached 2 anchored tankers at LF.  
    08.01 Colorado 65°, 2 nm    
        Surface attack - Bow shot on tanker.  
       
Detonation after 48.5 seconds.
Tanker burns immediately.  3080 tons.
Ato, depth 2.5 meters, torpedo speed 40 knots, range 500 meters.  Hit amidships.
 
    08.03   Surface attack - Bow shot on tanker.  
       
Detonation after 55.2 seconds.  Tanker
Tanker burns immediately.  2740 tons.
Eto, depth 2.5 meters, torpedo speed 30 knots, range 500 meters.  Hit amidships.
 
        Came to 300° for artillery attack on refinery and tanks.  
    08.08   Artillery clear.  
    08.11   Opened fire on land targets.  
    08.12   10.5:  1st shot barrel burst.  2 seriously injured.  3.7: 16 shots.  Shots are not very well-placed at the target, because there is no night sight lighting.  
           
Sun and Moon Data 15.02.42
Sun and Moon Data 16.02.42
 
- 16 -
 
           
           
           
    continued      
    16.02.42   A single short tongue of flame observed on land.  Fire discontinued because of slight effect.  
        Headed for Oranjustad at GF.  
    08.50   Guard vessel on course Oranjustad-Nicholas Harbour passes 400 meters abeam.  Searches with weak searchlight.  Turned away.    
        Searchlights also from land.  
      Colorado 99°, 9 nm    
    08.59   Proceeding to Oranjustad  
    09.00   Matr.Gefr. Büßinger succumbed to his injuries.  The II Watch Officer's foot is off.  The bleeding has stopped..  
    09.16   Off Oranjustad.  Attempt on the tanker at the pier.  
        Surfaced bow shot on tanker.  Course at the shot 54°, no detonation, Eto, depth 3 meters, torpedo speed 30 knots, range 600 meters.  Reason for failure is uncertain.  
        New approach.  
    09.30   Surfaced bow shot on tanker, course at the shot 29°, no detonation, Eto, depth 3 meters, torpedo speed 30 knots, range 600 meters.  Reason for failure is uncertain.  
        Came about for stern shot.  
    09.43   Surfaced stern shot on tanker, course at the shot 190°, miss, after 1 minute 29.5 detonation on the beach.  
    09.46   Crash dive for aircraft, halted.  
        Alarm recanted.  Did not dive.  Departed to the north to operate by day north of the island against Mona Passage-traffic.  
        Probably none of the big tankers will depart today.  It appears advantageous to me to operate on newcomers today.  
    12.00 EC 9218 Day's run:  Surfaced = 85 nm  
      E 5, Sea 5, lightly cloudy, Vis. 6 nm, E-Swell 3                  Submerged = 28 nm = 113 nm.  
    12.28   Radio message delivered:   Defence only floodlights, aircraft and a guard vessel.  Sank 2 tankers of 3800 tons, 2 misses against tanker at pier.  Barrel burst, 2 men serious casualties, including the 2nd Watch Officer.  May I call at Martinique to put ashore?  159 cbm.  
                                                               from Hartenstein.  
        (Another boat repeats, Control understood.)  
    16.00 EC 9222 From 12.47 hours on course 60° to a holding position off Martinique.  At the same time, off Aruba and Curacao to the north, important shipping lanes searched.  Nothing sighted.  
      EbyN 4, Sea 3, nearly cloudless, Vis. 12 nm, E-Swell 3-4  
    20.00 EC 6895    
      EbyN 6, Sea 5, partly overcast, Vis. 12 nm    
                                                         
           
Sun and Moon Data 16.02.42
 
- 17 -
 
           
           
           
           
    17.02.42 North of Aruba    
    00.00 EC 6972    
      E 4, Sea 4, nearly overcast, Vis. 6 nm    
    01.00 EC 6957 Evening navigation fix:  13° 25'N  68° 57.2'W  
        Funeral service for Mtr.Gefr. Büßinger  
    03.05   Radio message received:  To Hartenstein.  
        Question concerning delivery of wounded is being looked into.  
    04.00 EC 6955    
      E 4, Sea 4, overcast, rain, Vis. 3 nm    
    07.20   Radio message received:  To Hartenstein.  
        Head for suggested island.  Delivery of wounded approved. Announce when nearby.  
    08.00 EC 6958    
      E 6, Sea 5, nearly overcast, Vis. 4 nm    
    12.00 ED 4714 Day's run:  Surfaced  112 nm.  
      EbyS 4, Sea 4, cloudy, Vis. 6 nm    
    12.30 ED 4714 Morning navigation fix:  13° 57.5'N  68° 23.5W.  
    13.35   Test dive.  
    15.14 EbyS 4, Sea 3, lightly cloudy, Vis. 12 nm Surfaced.  Continued transit.  It is laborious to gain ground against the trade wind.  Short steep seas.  Struck out on course 60° (20° deviation to the north) after experience during transit trade wind limit lies at 15° N.  Detour of 30 nm appears worth it.  
                                                         
    18.02.42    
    00.00 ED 4545 Due to cross sea from 80-120 high fuel consumption.  
    01.50 ESE 4, Sea 3, lightly cloudy, Vis. 5 nm Radio message delivered:  
      1.)  Air surveillance off Antigua.  Heavy independent traffic BB middle and upper-right, usually radiating from Trinidad.  
        2.)  In the operations area lighthouses are extinguished except for Colorado and harbour beacons.  Refinery workings were lit up brightly.  In the main harbour always 2-4 big tankers.  Outbound traffic mostly west north-west, also to the north.  Small tankers run in accordance with Gröner loaded at 4 meters draft.  Confirmed by hit.  The best reception midnight till eight o'clock.  
        3.)  Matr.Gefr. Büßinger died.  II. W.O. foot is off.  Bleeding stopped.  
        4.)  Heading for Fort de France.  150 cbm.  Position BB 94.  
                                                                 from Hartenstein.  
        (Was not understood).  
    04.00 ED 4528    
      ENE 4, Sea 3, partly overcast, light rain, Vis. 4 nm    
    08.00 ED 4532    
      ESE 3-4, Sea 3, nearly overcast, Vis. 14 nm    
           
Sun and Moon Data 17.02.42
Sun and Moon Data 18.02.42
 
- 18 -
 
           
           
           
    continued      
    18.02.42      
    12.00 ED 4375 Day's run:  Surfaced = 89 nm  
      EbyN 5-6, Sea 5, nearly overcast, Vis. 6 nm                  Submerged = 2 nm = 91 nm.  
    14.00 ED 4529 Morning navigation fix:  14° 42'N  
                                            67° 04'W.  
    16.00 E 5, Sea 5, cloudy and overcast, Vis. 12 nm    
    18.45   Came to course 100°.  The detour was worth it.  Wind in the north, a good wind strength, more calm.  
    20.00 ED 4367    
      EbyS 3-4, Sea 3, partly overcast, Vis. 12 nm    
                                                         
    19.02.42      
    00.00 ED 5147 Radio message delivered:  
      EbyN 3, Sea 5, lightly cloudy, Vis, 10 nm 1.)  Air surveillance off Antigua.  Heavy independent traffic Bruno Bruno middle and upper-right, usually radiating from Trinidad.  
        2.)  In the main harbour always two to four big tankers.  Outbound traffic mostly west north-west, also to the north.  Small tankers run in accordance with Gröner loaded at 4 meters draft.  Confirmed by hit.  Shelling shore installations with three seven only little effect.   The best reception midnight till eight o'clock.     
        3.)  Heading for Fort de France.  147 cbm.  Position Bruno Bruno 93.  Heavy trade winds.  
        4.)  Matr.Gefr. Büßinger died.  II. W.O. foot off.  Bleeding stopped.  
                                                                 from Hartenstein.  
    01.00 ED 5172 Evening navigation fix:  15° 14.5'N,   
                                           65° 36.2'W.  
    04.00 ED 5185    
      EbyN 5, Sea 5, cloudy, Vis. 4 nm    
    08.00 ED 5198    
      EbyN 5, Sea 4, lightly cloudy, Vis 4 nm    
    12.00 ED 5278 Day's run:  Surfaced = 172 nm.  
      E 5, Sea 5, lightly cloudy,    
      Vis. 6 nm    
    12.15 ED 5512 upper edge Morning navigation fix:  14° 57.8'N  
                                            64° 42.3'W.  
    13.00 ED 5513 Crash dive for training.  
    13.44   Surfaced.  Continued transit to Martinique  
    16.00 ED 5522    
      E 5, Sea 5, lightly cloudy, Vis. 12 nm    
    16.35 ED 5523 Steamer in sight bearing 55°T.  Steamer course 150°.  Turned away to the south and maneuvered ahead.  
    18.35 ED 5535 Dived.  To action stations.  
        Freighter.  3500 GRT, not loaded, painted olive-grey, no flags, no neutral markings, black cap on funnel, grey ring, white stern, 4 hatches, 1 coal hatch, 2 ventilator heads before the funnel.  
           
Sun and Moon Data 18.02.42
Sun and Moon Data 19.02.42
 
- 19 -
 
           
           
           
    continued      
    19.02.42      
    18.35   Submerged stern shot on freighter.  
       
Shooting data determined by plotting.
Miss
Eto, depth 3 meters, torpedo speed 30 knots, range 600 meters
 
        Probably under ran.  
        Submerged stern shot on freighter.  
       
Miss
Eto, depth 2 meters, torpedo speed 30 knots, range 1400 meters, undetermined
 
        This is now the 3rd missed shot after the first 2 torpedoes hit.  The steamer, according to draft, could only be had with a surface runner.  Besides, nobody can say with certainty T.V.A. and T.V (Torpedo Experimental Establishment) how deep the torpedo actually runs.  
    20.47 KD 5539 Surfaced.  Continued transit on course 91° on 1 Diesel at HF.  
      E 4, Sea 4, lightly cloudy, Vis. 5 nm  
    21.45   Radio message received:  To Hartenstein.  
        After delivery of wounded, free to maneuver.  Operations off area naval quadrant ED 11 and EN 76 and 84 might be favorable.  
    22.10   Radio message received (Officer-Only)  
        To Neuland boats:  
        USA-ships have received the following instructions:  
        1.)  Do not enter or depart from important Caribbean harbours, except during the day.  
        2.)  Ships in the Caribbean Sea are instructed to proceed completely darkened.  
                                                         
    20.02.42 West of Martinique    
    00.00 ED 5619    
      E 4, Sea 3-4, lightly cloudy, Vis. 10 nm    
    00.45 ED 5651    
    04.00 ED 5653 Evening navigation fix:  14° 40'N,  63° 41'W   
      EbyN 3-4, Sea 3, Vis. 5 nm, clear    
    08.00 ED 6441    
      EbyN 4, Sea 3, lightly cloudy, Vis. 4 nm    
    11.31 ED 6452 Steamer in sight bearing 170°T, 4000 GRT on course 300°, 4 nm distant, turned to starboard and initiated the attack.  
      Beginning of dawn Submerged bowshot on freighter.  
       
Eto, depth 2 meters, torpedo speed 30 knots, range 600 meters.
Running time:
Hit amidships.
 
        Steamer stopped, fires with stern cannon.  Well placed in azimuth, however, short.  It is already too light for a surfaced attack.  
           
           
Sun and Moon Data 19.02.42
Sun and Moon Data 20.02.42
 
- 20 -
 
           
           
           
    continued      
    20.02.42      
    11.54   Crash dive for another attack, the steamer does not sink  
    12.00 ED 6453 Submerged bow shot on freighter.  
                              Day's run:  Surfaced = 128.8 nm
Eto, depth 3 meters, torpedo speed 30 knots, range 400 meters.
Miss.
Reason undetermined.
 
                    Submerged = 7.8 nm Submerged bow shot on freighter.  
                                  = 136.0 nm.
Ato, depth 2.5 meters, torpedo speed 40 knots, range 700 meters.
Miss, deviated to the left
 
        Submerged bow shot on freighter.  
       
Eto, depth 2.5 meters, torpedo speed 30 knots, range 500 meters.
Running time:  37 seconds.
Hit not observed, the steamer fires at the periscope.
 
        Submerged stern shot on freighter.  
       
Eto, depth 2.5 meters, torpedo speed 30 knots, range 1000 meters.
Miss.
Reason undetermined.
 
        Flying boat with steamer.  4 aircraft bombs a great distance off.  The steamer occasionally shoots at the periscope, also to the wrong side.  
        Continued transit on course 90°.  
    15.49 EbyN 4, Sea 3, lightly cloudy, Vis. 12 nm Surfaced.  
    15.54 ED 6451 Crash dive for approaching flying boat bearing 260°T, continued transit at 40 meters.   
    18.00   Surfaced.  
    18.16 ED 6462 Crash dive for flying boat bearing 240°T on parallel course.  
    21.48   Surfaced.  Continued transit to Fort de France.  
    21.51 ED 6541 Steamer sighted bearing 90°T, on course 160°, 10 knots, maneuvered ahead.  
    22.15 ED 6517 Crash dive for flying boat bearing 145°T.  [illegible word] approach.  This fellow is apparently not easily lost.  Continued transit submerged until darkness.    
                                                         
    21.02.42      
    00.00 ED 6518 A makeshift chart of Fort de France is produced from the sea handbook, because no coastal chart is aboard.  
    01.55 ED 6519 Surfaced.  Continued transit at HF on course 96°.  
      E 3-4, Sea 3, lightly cloudy, Vis. 5 nm Lights of Martinique are in sight directly ahead, bow tubes, 3.7 cm S.K. and 2 cm flak are made ready, because I am not completely sure of the attitude of the Vichy French Colonial authorities.  
           
Sun and Moon Data 20.02.42
Sun and Moon Data 21.02.42
 
- 21 -
 
           
           
           
    continued      
    21.02.42   (Tower coats of arms and radar detection device are removed for secrecy reasons.)  
      Bright moonlit night    
    03.00 Headed for Fort de France.  Headed for Fot de France.  Beacons is extinguished, buoys apparently removed.  Off the entrance set navigation lights, war flag flown from the periscope.  
        At the request of the signal facility delivered:  
        "Vaisseau Allemand".  
        "Envoyet un bateau pour uns blesse, s'il vous plait"."  
        ["German vessel".  "Send a boat for a casualty, please".]  
        Negotiate in vain with guard vessel coming out (communication problems).  
        He promises to send a boat, however does not.  
    04.35   Warship's dinghy with French officers and doctor comes alongside.  Very obliging.  Hand over II W.O.  
        At the request of the French navigation lights are extinguished (apparently to avoid a sensation).  
    04.50   Departed to the west.  Intention:  First operate on shipping route Trinidad-Anegada Passage.  Afterwards shifting to the west on the Trinidad-Mona route.  Intend to reload torpedoes during the next night, if necessary under the lee of Guadeloupe.  
    06.35   Radio message delivered:  From U-156:  
        Delivery went smoothly.  The day before yesterday CM 55 empty freighter 2 faulty Etos.  Sound firing data.  Depth 3 and 2 meters.  Yesterday JK 65 2 hits.  3 misses against a stationary freighter 4000 GRT.  Sinking not observed because of flying boat.  Going to Vienna. 140 cbm. 2 + 4 Torpedoes.  
    06.40 ED 6562 Steamer in sight bearing 180°T on course 300°.  Small coastal freighter about 800-1000 tons, bridge at the rear, funnel at the stern.  No mast.  Allowed to pass because draft is too shallow for a torpedo and 10.5 cm still out of service, 3.7 cm night sight illumination (with onboard means) not yet constructed.  
    08.00 ED 6564    
      E 2, Sea 2, lightly cloudy, Vis. 4 nm, E-Swell 2    
    10.00   Proceeding on 1 Diesel at LF on course 340°.  
    12.00 ED 6515 Morning navigation fix:  14° 49.2'N  
      E 2, Sea 1, clear sky, Vis. 8 nm                                     62° 06'W.  
      Day's run:  Surfaced = 126.5 nm  
                       Submerged = 37.5 nm = 158 nm.  
    12.40 ED 6512 Crash dive for approaching flying boat bearing 140°T.  
      West of Martinique    
    13.30   Surfaced.  Continued transit on course 340°.  
    16.00 ED 6274    
      EbyN 3, Sea 1-2, Vis. 12 nm    
    20.00 ED 6163    
      E 2, Sea 1, clear sky, Vis. 12 nm    
                                                         
Sun and Moon Data 21.02.42
 
- 22 -
 
           
           
           
           
    22.02.42 West of Guadeloupe    
    00.00 ED 3797    
      EbyS 1, Sea 1, lightly cloudy, Vis. 8 nm    
    00.53 ED 3774 Came to course 270° for operations on the route Trinidad-Mona Passage.  
    02.00   4 Atos loaded from above deck, 2 hours 40 minutes from the beginning of arrangements until 4 Atos were below deck.  
    04.00 ED 3776 Removed about 38 cm of the wrecked barrel of the 10.5 cm with a steel saw.  
      EbyS 1, Sea 1, scattered clouds, Vis. 5 nm  
    08.00 ED 2995    
      EbyS 2, Sea 1, lightly cloudy, Vis. 5 nm    
    12.00 ED 2975 Day's run:  Surfaced = 154.2 nm  
      ESE 2, Sea 1, lightly cloudy, Vis. 6 nm                  Submerged = 2.8 nm = 157 nm.  
    12.10 ED 2974 Morning navigation fix:  16° 01'N  
                                            63° 56.3'W.  
    12.21 ED 2974 Test dive.  
    12.52   Surfaced.  Continued transit on 1 Diesel at LF on course 270°.  
    16.00 ED 2886    
      ESE 3, Sea 2-3, cloudy, Vis. 12 nm    
    20.00 ED 2874    
      ESE 2-3, Sea 1-2, cloudy, Vis. 12 nm    
    23.30   Cannon fired.  Result: cannon appears to be useful.  Rifling unaltered.  Recoil from the firing table - moderate.  Heavy overbalance of the breech end (approximately 40 kgs).  Therefore, very difficult to aim.  
                                                         
    23.02.42 South of Puerto Rico  
    00.00 ED 2785    
      ESE 1-2, Sea 1, lightly cloudy, Vis. 10 nm    
    01.00 ED 2776 Evening navigation fix:  16° 02.3'N,   
                                           65° 29'W.  
    04.00 ED 1996    
      ESE 1, Sea 1, partly overcast, Vis. 4 nm    
    08.00 ED 1958    
      E 1, Sea 1, cloudy, Vis. 4 nm    
    12.00 ED 1916 Day's run:  Surfaced = 164.7 nm  
      EbyN 1, Sea 1, lightly cloudy, Vis. 6 nm                  Submerged = 1.3 nm = 166 nm.  
    12.20 ED 1916 Morning navigation fix.  
        Came to course 315°.  
    14.17 ED 1675 Crash dive for approaching aircraft bearing 20°T.  
    14.45   Surfaced.  
    14.56 ED 1675 Crash dive for aircraft bearing 80°T.  Parallel course.  
    15.30 EbyN 1, Sea 1, cloudy, Vis. 12 nm Surfaced  
    20.00 ED 1564    
      EbyN 1, Sea 1, cloudy and overcast, Vis. 12 nm    
           
Sun and Moon Data 22.02.42
Sun and Moon Data 23.02.42
 
- 23 -
 
           
           
           
    continued      
    23.02.42      
    23.30 ED 1524 A steamer in sight bearing 35°T on course 120°.  Steamer zig zags heavily.  Aircraft escort.  
        Came to opposite course, maneuvered ahead.  
                                                         
    24.02.42      
    00.00 ED 1527    
      E 2, Sea 2, partly overcast, Vis. 8 nm    
    00.10 ED 1527 Crash dive for escorting aircraft.  
    00.25   Surfaced.  Again forced to submerge.  
    01.30   Continued to maneuver ahead on the surface.  Steamer runs at high speed (12 knots), zigzags 50°, sometimes on opposite course.  
    05.00 ED 1619    
    06.30 ED 1675    
    07.00 EbyS 2, Sea 2, cloudy, Vis. 5 nm After moonset approached repeatedly.  Steamer outmaneuvers every time, it is believed that the boat was detected with listening gear.  
        Settled in the wake, to take a propeller shot.  
        Surfaced - bowshot on steamer target angle  
       
180°.
Miss,
Ato, torpedo speed 40 knots, depth 2.5 meters, range = 900 meters.
 
        Attack broken off, proceeding on course 300°, for Mona.  
    12.00 ED 1555 Day's run:  Surfaced = 220.4 nm  
      SE 2, Sea 1-2, lightly cloudy, Vis. 6 nm                  Submerged = 6.6 nm = 227.0 nm.  
    12.20 ED 1551    
    16.00 ED 1512    
      SE 2-3, Sea 2, Vis. 12 nm    
    17.34 ED 1274 Crash dive for aircraft bearing 330°T.  
    18.00   Surfaced.  Continued transit.  
    18.19 ED 1274 Two tankers bearing 310°T stacked one behind the other on a southerly course.  The first a shuttle type Aruba, the other a big tanker, estimated 9000 GRT.  Slight clipper stem, wide funnel, stern mast directly ahead of the engine room bulkhead.  
        Speed determined to be 12.5-13 knots as we maneuvered ahead.  
    20.00 ED 11.99 Performance of the diesels is very gratifying:  Speed setting 2 x GF = 17 knots can be held against Sea 3 and tropical coolant temperatures hour after hour.  
      SE 3-4, Sea 3, lightly cloudy, Vis. 12 nm  
    22.00 ED 1541                                                  
           
           
Sun and Moon Data 23.02.42
Sun and Moon Data 24.02.42
 
- 24 -
 
           
           
           
           
    25.02.42      
    00.00 ED 1584    
      EbyS 2, Sea 2, partly overcast, Vis. 6 nm    
    01.38 ED 1825 Dove when ahead of the tanker at target angle 0°, because surface attack is not possible in the bright moonlight.  Estimated range at diving 4 nm.  Initiated attack.  
      bright moon  
    02.18   Submerged-bowshot on tanker.  
       
Hit heard.
(periscope dipped)
Ato, torpedo speed 40 knots, depth 2.5 meters, range = 1500 meters.
Running time:  1 minute 43 seconds.
 
    02.19   Submerged-bowshot on tanker.  
       
Hit astern between mast and engine room (as aimed)
Ato, torpedo speed 40 knots, depth 2.5 meters, range = 1500 meters.
 
        Subsequently determined the first hit struck amidships.  Running time 1 minute 43 seconds.  
        Tanker stopped, lights on deck, blew steam off, settles a little deeper . . . . . and after about ten minutes gets underway again, course 350° for Ponce, speed 9 knots.  
    02.50 News account of 25.02.42:    
      "DEL PLATA" sunk in the Caribbean Sea  
      Lisbon:  The U.S.A. steam freighter "DEL PLATA" (5127 GRT) was sunk last Friday in the eastern part of the Caribbean Sea.  This fact only became known, when a warship landed 52 men of the crew of the sunken freighter in a harbour of the Antilles.  They were sighted by a of U.S.A. aircraft.  The "DEL PLATA " was the property of the Mississippi Steamship Company, New Orleans, and provided service between New Orleans and Buenos Aires.  
        [handwritten note] Added to the account 20 February.  
    03.00 ED 1831 Surfaced in the wake, eased off to starboard and maneuvered ahead.  
      E 3, bright moon  
    05.19 ED 1559 Dived 4 nm ahead of the tanker.  Initiated attack.  
      Starry night, partly overcast Submerged bow shot on tanker  
       
Ato, torpedo speed 40 knots, range = 1000 meters.
 
        Submerged bow shot on tanker  
       
Ato, torpedo speed 40 knots, range = 1000 meters.
 
        Both missed.  After 40 seconds running time fiery glow at the stern: joy is premature.  He is shooting with the cannon at the supposed end of the torpedo tracks, turned away hard.  
        Surfaced astern of the steamer, began to maneuver ahead.  Intend to attack on the surface at moonset.    
    06.21 ED 1534 Surface - bow shot on tanker.   (last torpedo)         
       
Eto, torpedo speed 30 knots, depth 3 meters, range = 1800 meters.
Hit forward.
 
           
Sun and Moon Data 25.02.42
 
- 25 -
 
           
           
           
    continued      
    25.02.42      
       
Running time: 1 minute 33 seconds.
 
        Tanker sinks quickly, stern is out of the water, lifeboats are launched.  Foredeck sinks away.  Tanker goes vertical and sinks 2 minutes after hit.  
        All torpedoes expended.  
        Lights of Puerto Rico in sight.  
        Continued transit to Mona.  
    11.30 ED 1271 Mona in sight, came to course 355°.  
    12.00 Mona Island 274°, 16.3 nm Day's run:  Surfaced = 227.4 nm  
      SE 3, Sea 2, cloudy, Vis. 5 nm                  Submerged = 5.6 nm = 233 nm.  
    14.21 ED 1139 Dived for Motor freighter, 2000 GRT, aircraft escort, bearing 25°T on course SSW.  
        Remained submerged for the rest of the day due to continuous air traffic (apparently on the Havana-San Juan Puerto Rico route) and proximity to land.  
                                                         
    26.02.42      
    00.00 DO 7879    
    00.55 Point Borinquen 128°, 1 nm Back and forth in the north part of the Mona Passage.  
      S 2-3, Sea 1, clear, Vis. 6 nm    
    04.00 S 2, Sea 1, lightly cloudy, Vis. 4 nm    
    07.00   Eliminated after heaviness of the 10.5-cm barrel by unscrewing and welding 2 trim weights.  Manufactured night sight lighting for 3.7 SK with on board means.  
        Came to northerly course.  
    07.22 Point Borinquen 94°, 19 nm    
    12.00 DO 7844 Day's run:  Surfaced = 77 nm  
      NNE 3, Sea 2, overcast, light rain, Vis. 5 nm, N-Swell 3                  Submerged = 24 nm = 101 nm.  
    13.00   Fired 10.5 cm.  Cannon is ready for action.  
    13.17 DO 7817 Aircraft in the northeast, course NNW.  Remained on the surface.  
    14.13 DO 7763 Intend to search tonight off Puerto Rico the roadsteads of Aguadilla and Arecibo, as well as the coastal route to the north of Puerto Rico to San Juan for the use of artillery.  
        Suppose traffic on both roadsteads, because of the railway lines on the chart.  
    14.58 DO 7841 Crash dive for aircraft bearing 50°T, course W.  
    15.57   Surfaced.  
           
Sun and Moon Data 25.02.42
Sun and Moon Data 26.02.42
 
- 26 -
 
           
           
           
    continued      
    26.02.42      
    15.59 DO 7817 Aircraft bearing 250°T, course SE.  Showed our stern, continued on.  
    18.30 DO 7816 Steamer in sight course 290°.  Bird in hand.  Trailed.  
      N 2-3, Sea 1, overcast, Vis. 10 nm, N-Swell 4 Contact maintained.  Maneuvered ahead.  Intention: attack with artillery after sunset.  Fails, because of a bank of thick black clouds in the west.  Continuous contact maintained, intention: attack after moonset.  
                                                         
    27.02.42      
    00.00 DO 7617    
      N 2, Sea 1, nearly overcast, Vis. 6 nm    
    04.00 DO 7711    
      NbyE 1, Sea 1, cloudy, moonshine, light swell    
     
Radio press report: The British Tanker "LA CARRIERE" (5685 GRT) was sunk early Wednesday near Puerto Rico, after it was torpedoed by a submarine.  23 survivors of the British tanker landed on Wednesday in 2 lifeboats in Ponce, Puerto Rico.  2 other boats are still expected.
 
        This is somewhat of a disappointment:  At 1800 meters he no longer fit in the UZO.  
    08.00 E Samana 173°, 23.8 nm    
    10.35   Approached enemy freighter from an acute angle.  At range 1600 meters turned to run.  Opened fire with all weapons.  
      After moonset medium dark night, weak wind, nearly calm swell Steamer transmits on the 600 meter wave:  "sss gbnd box 23 wat 0802."  
      Interfered with own transmitter.  
        Fires once from stern artillery.  Soon burning amidships. Bombardment continued from 1200-600 meters. Size estimated to be at least 2500 GRT, likely more.  
        Lists a bit to starboard, burns from the stern.   
        Expended:  92  shots  10.5 cm  
                         112     "      3.7 cm  
    [handwritten] Southern Silverbank Observed 25-30% hits.  
    11.30 Beginning of dawn From the dark NW-Horizon a vessel shoots at long range with a cannon, it can not be recognized.  Do not intend to enter into an artillery duel with a vessel that is probably prepared in daylight.  
    11.40   Because our target seems to be sinking with certainty, bombardment ceased and ran off to the northwest on false courses.  
           
           
Sun and Moon Data 26.02.42
Sun and Moon Data 27.02.42
 
- 27 -
 
           
           
           
    continued      
    27.02.42      
    12.00 E Samana 144°, 32 nm Day's run:  Surfaced = 185 nm  
      NNE 1, Sea 1, lightly cloudy, Vis. 8 nm                  Submerged = 3.3 nm = 189 nm.  
    12.30   Morning navigation fix:  19° 56'N,  69° 23'N  
    14.00 West of Navidad Bank Came to course 120° to search on the shipping lanes to the north of the Mona Passage.  Should nothing more be found, I intend to search off the north coast of Puerto Rico to San Juan as planned for yesterday.  
    16.00 E Samana 215°, 32.5 nm    
    20.00 DO 7721    
      NNE 1, Sea 1, cloudy and overcast, Vis. 12 nm    
    22.50 DO 7763 Steamer in sight bearing 165°T, on course 355°.  
        Crash dive for aircraft bearing 210°T.  
                                                         
    28.02.42      
    00.00 DO 7763 Let tanker pass at 800 meters range.  Size 4500 GRT. Formula 1n1s.  Funnel olive-grey with a marking in the form of coat of arms shaped badge painted over the olive-grey background.  Aft of the funnel 4 ventilator heads.  Flag set but could not make out as it was dirty.  No neutral markings.  Loaded.  Could not make out armament with certainty.  On the stern perhaps a small cannon, 5 cm.  Zigzags 30° about course 355°.  
    01.20 DO 7817 Surfaced astern of tanker.  Began to maneuver ahead.  
      SSE 2, Sea 1, lightly cloudy, Vis. 5 nm, moonshine, SSE-Swell 2    
    04.00 DO 7496    
    08.00 DO 7532    
    11.17 DO 7192 Approached to 1000 meters.  Opened fire.  2 shots hit the bridge.  No counter fire.  Continued bombardment from 900-400 meters.  Did not notice the steamer was still moving at 6 knots with hard port rudder. Therefore in trying to get closer a light collision.  Forward starboard diving plane inoperative, light minor damage to the forecastle.  
        Balance weight 10.5 cm flew off after 140 shots.  Firing continued.  Recoil reaches allowable maximum. Continued firing.  Expended: 58 shots 10.5 cms, 304 shots 3.7 cm and 101 shots 2 cm.  Approximately 25-30 hits of 10.5 cm and 200 hits 3.7 cm observed. Tanker burns brightly amidships.  10.5 cms and 3.7 cm ammunition exhausted.  Later sinking assured.  
           
           
Sun and Moon Data 27.02.42
Sun and Moon Data 28.02.42
 
- 28 -
 
           
           
           
    continued      
    28.02.42   Ran off to the NE.  
        Steering Great Circle route returning to Lorient.  
    12.00 DO 7192 Day's run:  Surfaced = 228.0 nm  
      SbyE 2, Sea 1, lightly cloudy, Vis. 6 nm, SSE-Swell 2                  Submerged = 7.0 nm = 235 nm.  
    15.05 DO 7219 Crash dive for training.  
    15.45   Surfaced.  Continued transit on 1 Diesel at HF on course 51°.  On board 1300 rounds of 2 cm ammunition.  Plan:  if a steamer is found during the day on the return transit, maneuver ahead to target angle 0°, dive and visually examine armament, then at target angle 100° surface at 500 meters range, immediately suppress stern artillery with 2 cm, with Varta lamp and if necessary by radio message: Stop and Surrender.  Sink with explosive charges.  
                                                         
    01.03.42 500 nm South of Bermuda    
    00.00 DO 5711    
    00.58   Radio message delivered:  (Ireland Circuit)  
        "Linz and Vienna heavy traffic.  From Hartenstein.  Much air, likely mostly civilian traffic.  25th LA CARRIERE PT 65 sinks after 3 hits, 2 misses.  Last 40 cm of the damaged 10.5 sawed off, balance weight welded on.  27th freighter, 2500 GRT, to the north of Haiti with artillery, probably sank. Burning, sinking slowly.  28th tanker, naval quadrant DO 41, burning, riddled. Sinking can be assumed.  Out of ammunition.  Returning.  
        Naval quadrant DO 49.  101 cbm.  Following serial numbers missing . . . . . . . .  
      NNE 2, Sea 2, nearly overcast, Vis. 4 nm Steamer in sight bearing 120° on southerly course.  Showed our stern, departed to the north.  I do not intend to attack a steamer whose armament strength I do not know at night with only 2 cm flak.  Continued transit.  
    04.00 DO 5459    
    08.00 DO 5519    
    12.00 DO 5292 Day's run:  Surfaced = 261.2 nm  
                         Submerged = 2.8 nm = 264 nm.  
    12.15   Morning navigation fix:  23° 25'N,  64° 10'N  
    16.00 DO 5342    
    20.00 DO 5322    
      NEbyN 3, Sea 2, cloudy, overcast, Vis. 12 nm    
                                                         
    02.03.42      
    00.00 DO 2996    
      NbyE 2-3, Vis. 10 nm, Sea 2, N-Swell 2, heavily cloudy    
    04.00 DO 3751    
    08.00 DO 3732    
    12.00 DO 3555    
           
Sun and Moon Data 28.02.42
Sun and Moon Data 01.03.42
Sun and Moon Data 02.03.42
 
- 29 -
 
           
           
           
    continued      
    02.03.42      
    12.00   Day's run:  Surfaced = 180 nm  
    12.10   Morning navigation fix:  25° 20'N,  61° 40'N  
    13.42 DO 3553 Crash dive for training.  
      N 3, Sea 2, NNW-Swell 2-3, lightly cloudy, Vis. 12 nm    
    14.05   Surfaced.  Continued transit.  
    15.00 DO 3536    
    20.00 DO 3318    
                                                         
    03.03.42 500 nm Southeast of Bermuda    
    00.30 DP 2115 Evening navigation fix:  26° 28'N,  60° 15'N  
      NE 2, Sea 1, lightly cloudy, Vis. 10 nm    
    01.30 -   Total lunar eclipse.  
    03.30      
    04.00 DD 8997    
    08.00 DD 9744    
    12.00 DD 9489 Day's run:  Surfaced = 214.3 nm  
      SE 3, Sea 2, NW-Swell 2, cloudy, Vis. 8 nm                  Submerged = 0.7 nm = 215 nm.  
      Morning navigation fix:  27° 35'N,  58° 47'N  
   

13.20

16.00

DD 9494

DD 9812

Steamer in sight bearing 55°T on course 115°.  Turned to the south and maneuvered ahead.  Tested 2 cm flak with 20 rounds.  Fires perfectly.  Explosive ammunition made ready.   
    18.32 DD 9825 Dived 11 nm ahead of the steamer.  Allowed to overtake.  Range 600 meters.  Formula 1bis1i.  2 masts forward, 1 astern, 2 kingposts.  Camouflage paint.  Ventilators forward of the funnel.  4 small ventilators aft of the funnel.  On each side large life rafts.  2 anti-aircraft gun platforms, each apparently with 4 cm machine cannon between the smokestack and the after mast.  Initially harmless for the planned attack because they are covered.  Relatively thin smokestack.  Steam whistle astern.  Stern artillery 10.5 cm manned by 4 men in uniform.  
      SE 4, Sea 4, bright sunshine  
        No, its not right.  They can shoot before my anti-aircraft armament is ready.  Attack given up.  
    20.00 DD 9825 Surfaced.  Continued transit on course 51°.  
                                                         
    04.03.42      
    00.00 DD 9595 Evening navigation fix:  27° 40'N,  57° 10'N  
      ESE 4, Sea 3-4, nearly overcast, Vis. 8 nm    
    04.00 DD 9645    
    08.00 DD 9626    
    11.45   Morning navigation fix:  28° 48'N,  55° 47'N  
    12.00 DE 7171 Day's run:  Surfaced = 211.8 nm  
      SEbyE 3-4, Sea 3, nearly overcast, Vis. 10 nm                  Submerged = 3.2 nm = 215 nm.  
           
Sun and Moon Data 02.03.42
Sun and Moon Data 03.03.42
Sun and Moon Data 04.03.42
 
- 30 -
 
           
           
           
    continued      
    04.03.42      
    16.00 DE 7127    
    18.30 DE 7131    
    20.00 DE 4796    
                                                         
    05.03.42      
    00.00 DE 4846 Evening navigation fix:  29° 52'N,  54° 20'N  
      SEbyS 4, Sea 3-4, nearly overcast, Vis. 8 nm    
    04.00 DE 4834    
      Occasional rain    
    08.00 DE 4671    
    12.00 DE 4652 Day's run:  Surfaced = 192 nm  
      SW 3, Sea 2-3, overcast, rain showers    
    16.00 DE 4653    
      NW-Swell 3-4, Vis. 10 nm    
    18.10 DE 5178 Noon fix:  31° 12'N,  52° 02'N  
    20.00 DE 5181    
                                                         
    06.03.42 600 nm East of Bermuda    
    00.00 DE 5162 Evening navigation fix:  31° 40'N,  51° 16'N  
      NW 2, Sea 1, NW-Swell 2-3, Vis. 8 nm    
    04.00 DE 5213    
      lightly cloudy    
    08.00 DE 2891    
    11.30 DE 2942 Morning navigation fix:  32° 35'N,  49° 43'N  
    11.54 DE 2918 Crash dive for training.  
    12.00 DE 2918 Day's run:  Surfaced = 197.7 nm  
                         Submerged = 0.3 nm = 198 nm.  
    12.17 NW 2, Sea 1, NW-Swell 4, clear with light clouds, Vis. 12 nm Surfaced.  
    16.00 DE 2689    
    20.00 DE 3471    
    23.40 DE 3452 Evening navigation fix:  33° 28'N,  48° 07'N  
                                                         
    07.03.42      
    00.00 DE 3452    
      ENE 2, Sea 1, lightly cloudy, Vis. 6 nm    
    04.00 DE 3511    
    06.56 DE 3284 Steamer in sight bearing 330°T with set lights and neutrality markings, course to the Azores.  Allowed to pass.  
      Half way between Bermuda and the Azores  
    08.00 DE 3258    
    12.00 DE 3263 Day's run:  Surfaced = 197.2 nm  
      NW 2, Sea 1, NW-Swell 2, nearly overcast                  Submerged = 0.8 nm = 198 nm.  
           
           
Sun and Moon Data 04.03.42
Sun and Moon Data 05.03.42
Sun and Moon Data 06.03.42
Sun and Moon Data 07.03.42
 
- 31 -
 
           
           
           
    continued      
    07.03.42      
    12.45 DF 1177 Navigation fix:  34° 34'N,  46° 17'N  
    16.00 CD 7787    
    20.00 CD 7768    
                                                         
    08.03.42      
    00.00 CD 7819    
      WSW 4, Sea 3-4, NW-Swell 3-4, nearly overcast, light rain    
    04.00 CD 7831    
    08.00 CD 7681    
    11.15 CD 7659 Morning navigation fix:  36° 04'N,  43° 07'N  
    12.00 CD 7664 Day's run:  Surfaced = 192 nm  
      NW 5-6, Sea 5, NW-Swell 5    
    16.00 CD 8478    
      Nearly overcast, Vis. 10 nm    
    20.00 CD 8197    
    23.15 CD 8271 Evening navigation fix:  36° 48'N,  41° 24'N  
                                                         
    09.03.42      
    00.00 CD 8249    
      NW 6-7, Sea 6, Swell 5-6 Proceeding at HF into the sea.  
    04.00 CD 8238    
      cloudy and overcast, Vis. 5 nm    
    08.00 CD 5985    
      Rain showers    
    12.00 CD 6745 Day's run:  Surfaced = 233 nm  
    16.00 CD 6729    
      NW 8-9, Sea 8, overcast, heavy rain showers, Vis. 8 nm    
    17.40 CD 6735 Navigation fix:  38° 14'N,  38° 01'W  
    20.00 CD 6579    
                                                         
    10.03.42 West of the Azores    
    00.00 CD 6645    
      NW 6, Sea 5, nearly overcast, rain showers    
    04.00 CD 6628    
    08.00 CE 4678    
    10.30 CE 4184 Crash dive for training.  
    17.12   Surfaced.  Continued transit.  
    12.00 CE 4182 Day's run:  Surfaced = 211.1 nm  
      NWbyN 5, Sea 4, NW-Swell 4                  Submerged = 1.9 nm = 213 nm.  
    12.40 CE 4183 Navigation fix:  39° 33'N,  34° 46'W.  
      Nearly overcast, light rain, Vis. 12 nm    
    16.00 CE 4244    
    20.00 CE 4225    
                                                         
Sun and Moon Data 07.03.42
Sun and Moon Data 08.03.42
Sun and Moon Data 09.03.42
Sun and Moon Data 10.03.42
 
- 32 -
 
           
           
           
           
    11.03.42 Northwest of the Azores    
    00.00 CE 1977    
      NW 3, Sea 3, nearly overcast, light rain    
    04.00 CE 1968    
    08.00 CE 2726    
    10.00 CE 2578 Morning navigation fix:  41° 11'N,  30° 32'W.  
    12.00 CE 2584 Day's run:  Surfaced = 221 nm  
      NWbyW 4, Sea 3-4, nearly overcast, Vis. 10 nm    
    16.00 CE 2569    
      NW 4, Sea 3-4, cloudy, Vis. 12 nm    
    19.40   Radio message received:  
        Hartenstein on 12 March between 01.00 and 05.00 hours report weather by Weather Short Signal.  
    20.00 CE 2652    
      NW 3-4, Sea 3, nearly overcast, Vis. 12 nm    
    22.05 CE 2634 Evening navigation fix:  41° 53'N,  28° 32'W.  
                                                         
    12.03.42 North of the Azores    
    00.00 CE 3178    
      NW 4, Sea 3-4, cloudy and overcast, W-Swell 2-3, Vis. 3 nm    
    02.28   Short Weather Signal delivered on Ireland Circuit  
        Understood.  
    04.00 CE 3195    
      WbyS 3-4, Sea 3, cloudy, light rain, Vis. 4 nm    
    05.45   Radio message received:  "To Hartenstein:  
        Re-send Short Weather Signal, partially unclear.  
                                        from B.d.U. Headquarters".  
    06.28   Short Weather Signal delivered on Greenland Circuit.  Understood.  
    08.00 CE 3264    
      W 3-4, Sea 3, cloudy and overcast, Vis. 5 nm    
    09.30 CE 3263 Morning navigation fix:  42° 36'N,  25° 59'W.  
    12.00 CE 3319 Day's run:  Surfaced = 236 nm  
      W 3-4, Sea 3, cloudy, Vis. 10 nm    
    16.00 BE 7778    
      WSW 3, Sea 2-3, cloudy, Vis. 10 nm    
    18.58   Radio message received:  Hartenstein switch to Ireland Circuit on 13 March 08.00 hours  
    20.00 BE 7785    
      WSW 3, Sea 2-3, cloudy, occasional rain, Vis. 12 nm    
    22.00 BE 7791 Evening navigation fix:  43° 08'N,  23° 47'W  
                                                         
           
Sun and Moon Data 11.03.42
Sun and Moon Data 12.03.42
 
- 33 -
 
           
           
           
           
    13.03.42      
    00.00 BE 7848    
      WSW 3, Sea 2-3, nearly cloudy, Vis. 3 nm, occasional rain    
    04.00 BE 7838    
      SWbyW 2, Sea 2, nearly overcast, light rain, Vis. 4 nm    
    08.00 BE 7688 Switched to Ireland Circuit.  
      W 1, Sea 1, overcast, rain, Vis. 5 nm    
    12.00 BE 8473 Day's run:  Surfaced = 248 nm  
      WSW 2, Sea 1-2, overcast, rain, Vis. 0-12 nm    
    16.00 BE 8462    
      SWbyW 2, Sea 2, nearly overcast, Vis. 12, light rain, SW-Swell 2    
    20.00 BE 8521    
      SWbyW 2, Sea 2, cloudy, Vis. 12 nm    
    21.20 BE 8288 Radio message received:  
      Evening navigation fix: 44°46'N "Return port is Lorient for Rosenstiel, Hartenstein, Wattenberg.  
                                        18°02'W  
        Nazaire for Zahn, Pallice for Schulze . . . .  
        Boat is to use Route "Uhunest".  
                                                         
    14.03.42 200 nm Northwest of Finisterre    
    00.00 BE 8296    
      SWbyW 2-3, Sea 2-3, cloudy, Vis. 4 nm    
    04.00 BE 8359    
      SbyW 2-3, Sea 2, lightly cloudy, Vis. 4 nm    
    08.00 BE 9154 Morning navigation fix:  45° 12'N,  15° 20'W.  
    12.00 BE 9139 Day's run:  Surfaced = 243 nm  
      SWbyW 4, Sea 3, cloudy and overcast, rain, Vis. 12 nm    
    16.00 BE 9226    
      S 4, Sea 3-4, cloudy, Vis. 12 nm    
    20.00 BE 6987    
    21.20 BE 6989 Evening navigation fix:  45° 40'N,  12° 05'W.  
                                                         
    15.03.42      
    00.00 BF 4775    
      SW 4, Sea 3-4, overcast, Vis. 3 nm    
    04.00 BF 4874    
      SSW 3, Sea 3, overcast, occasional rain, Vis. 3 nm    
    08.15 BF 4894 Morning navigation fix:  45° 47'N,  8° 52'W.  
      SSW 3, Sea 3, cloudy, Vis. 6 nm    
    08.24 BF 4895 Dived to proceed submerged.  
    12.00 BF 4896 Day's run:  Surfaced = 245 nm  
                         Submerged = 12 nm = 257 nm.  
           
           
Sun and Moon Data 13.03.42
Sun and Moon Data 14.03.42
Sun and Moon Data 15.03.42
 
- 34 -
 
           
           
           
    continued      
    15.03.42 Bay of Biscay    
    16.00 BF 4972    
    20.00 BF 4981    
    20.54 BF 4982 Surfaced.  Continued transit on course 90°, at 2 x HF.  
      S 2-3, Sea 2, overcast, light rain, hazy, Vis. 5 nm    
    21.07   Short Signal delivered on Ireland Circuit:  
        "Positioned for entering port in 36 hours."  
        (understood and confirmed.)  
        Switched to Coastal Circuit.  
    22.35   White lights bearing 90°T, probably fishing vessels.  Moved off to the S from them.  
                                                         
    16.03.42 Bay of Biscay  
    08.10 SE 3, Sea 2-3, nearly overcast, light haze, Vis. 3 nm Dived.  
    20.45   Surfaced.  
    21.06   Short Signal delivered:  
        "Request Radio Beacon Group 2.  
                                                            U-156".  
        (understood and confirmed.)  
    21.30 -      
    22.00   Passed five illuminated fishing steamers near Point UHU.  
                                                         
    17.03.42      
        Proceeding on Route Uhunest and Rosa.  
    08.20 Ile de Groix Trailed a sperrbrecher.  
      Point L II Taken in convoy.  
    10.05 Lorient Made fast Lorient.  
                                                         
                                                        Kplt. and Kmdt. U-156  
           
      58 days at sea, 10050 nm.  3 Tankers, 1 Freighter sunk.  
      1 Tanker, 4 Freighters probable,          23632 GRT.  
      ======================================  
           
     
Special experiences:
1.) When the boat was fully loaded blowing out the watertight forecastle and stern made the boat ride higher in the water, saving 10 liters of fuel every hour even with 1 engine at LF; however, the closure of these spaces during the day in spite of setting a watch remains a certain source of danger
 
           
Sun and Moon Data 15.03.42
Sun and Moon Data 16.03.42
Sun and Moon Data 17.03.42
 
- 35 -
 
           
           
           
           
     
  because it is not guaranteed, particularly with "Silent Alarm" ("Get below"), that the vents are quickly opened, particularly for the watertight stern where no signal lamp exists in the Control Room.
  Suggestion: connect both spaces with the bridge air-operated fast vents, for new construction enlargement of both spaces.
2.) The transparency of the water in frequented tropical areas is so great, that when proceeding on the surface despite the bow wave from the bridge one can see the forward diving planes and at periscope depth in a sweep (periscope head above water) one can see own foredeck and stern as a terrifying shadow.
  Suggestion:  a)  Upper deck deep black, frequent touch-up painting
                     b)  Tower tub inside deep black,
                     c)  Tower exterior must remain light for night attack, but curved strongly reflecting surfaces like shaft of the periscope, aerials and Tower railings paint black
                     d)  Do not use bright wood (seals) in the upper deck.  Color does not always hold.  Demand:  That Industry or Kaiser Wilhelm Institute create durable black impregnation of the wood.
                     e)  With new construction decrease the number of the upper deck fastening points 16:1.  Color never keeps, metal plates always gleam metal-white. (metal panels of upper deck spaces, upper deck closures etc.)
                     f)  Creation of a Tower marking color which is light (possibly like teak) in the dry condition and dark when wet.  Perhaps possibly by addition of ground wood fibers which get dark when they are wet.
3.) More upper deck torpedoes:  none of the 5 boats operating there returned because of lack of fuel, but all, because they were out of torpedoes.
4.) Navigating on the Great Circle during the return transit results in no savings.  Besides, boats already proceed southwest of the Azores in the westwind area.  By pitching they lose far more speed than are gained by the current and following wind.   Boats run most economically and quickly in the calmest possible sea.  Suggestion for return transit from Mona: DO 52 - CE 68 - BF 71.
5.) Taking the following documents is desired:
  a)  Cruising handbook, to form an opinion of estimated traffic density of individual harbours and roadsteads.
  b)  Layout plan of civilian aviation routes and fields, areas of increased traffic density for example not to cruise any longer than necessary off San Juan de Puerto Rico.
  c)  Vansolow Handbook of International Law; for the timely clarification of problematic legal issues, because in this work numerous practical examples and precedent cases are specified.
 
           
           
 
- 36 -
 
           
           
           
           
     
6.) Additional installation of a dehumidifier is urgently required.  Boats must remain submerged for 13 hours for the observation of harbors.  Humidity is far more annoying than the heat.  13 hours under water in the tropics mean great impairment of the effectiveness of the crew.  Available space for dehumidifier: folding washing stand and adjacent locker in the Officers Room extension, if still necessary, shorten the table in the Officers Room.
7.) A short report concerning provisions and clothing submitted separately ito the 2. U.-Flottille
 
           
                                                         
                                                        Kplt. and Kmdt. U-156  
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           

 

Enclosures to U-156's KTB - click on the text at left to proceed to the document
Chart A Track chart covering entire war patrol                18 January 1942 to 17 March 1942
Chart B Track Chart for the period 14-16 February 1942
   
Chart C Track Chart for the period 16 January 1942
Chart D Chart noting sighting of ships and aircraft during the period 10 February to 3 March 1942

 

 
 
     
     
     
 

Commentary of the Befehlshabers der Unterseeboote

 
 
on the Kriegstagebuch of "U-156" from 11 January - 17 March 1942.
 
 

 

 
 
1.) Very well executed, first undertaking of the commander by a new boat.  The courage, attack spirit and considered actions of the commander brought the boat a beautiful initial success which unfortunately became sorely afflicted by undetermined failures.
2.) It is regrettable that the artillery attack on the oil refinery on Curacao was thwarted because of an error (Shot with tampion in place).
3.) The suggestions made by the commander will be examined.
 
     
   

Signed in draft:  D ö n i t z .

 
    Validized:  
 
          
                                                                              Leutnant zur See and Adjutant  
     
     
     
 

 


 

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