U-172 - 5th War Patrol

Translation by Christine Hillmann with the help of Andi Forster

Departed
Date
Arrived
Date
Days at Sea
Lorient
29 May 1943
Lorient
7 September 1943
102

 

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
28 Jun 43
04.43 - 04.46
4°26'S, 27°31'W
VERNON CITY
4,748
British
OS 49
12 Jul 43
06.56 - 07.25
26°00'S, 40°37'W
AFRICAN STAR
6,507
American
15 Jul 43
20.43 - 21.16
22°55'S, 34°01'W
HARMONIC
4,558
British
24 Jul 43
20.59 - 22.09
15°00'S, 32°25'W
FORT CHILCOTIN
7,133
British
JT 2
     
 Total = 22,133
   
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.


 
- 1 -
 
           
                                                                     Copy No.  . . . .  
           
           
           
                                                       
     
 
     
                   K  r  i  e  g  s  t  a  g  e  b  u  c  h     "  1  7  2  "
 
     
   ============================================
 
     
 
     
                                5th.  W  a  r    P  a  t  r  o  l
 
     
 
     
                       From 19  April to 7  September  1943.
 
           
           
     
 
     
                                     Kommandant:  Kptlt.  E  m  m  e  r  m  a  n  n
 
           
     
Distribution:    
Oberkommando der Kriegsmarine    
-2.Abt.Skl/B.d.U. Op.-
Copy No.
1, 2 and 3
Kommandierender Admiral der Unterseeboote
"
4
Führer der Unterseeboote West
"
5
Führer der Unterseebootesausbildungsflotillen
"
6
27. Unterseebootsflottille
"
7
10. Unterseebootsflottille
"
8.
     
Enclosures:    
1 Track chart                                            with
"
2 and 3
   Torpedo firing reports
"
3, 4, 5, and 8
1  Excerpt of the Radio Log
"
2, 3, 4, 5 and 8
    Barograph strips
"
5.
 
           
                                         
           
           
        © U-boat Archive 2023 - all rights reserved  
Click the flag to view the above page from the original German KTB
 
- 2 -
 
           
           
           
           
    19.04.43
Lorient
Cleared the boat.  Provisions offload.  
    20.04.43
     "
Began shipyard period, repair work, conning tower rebuild.  
    25.04.43
     "
Hauled up at "Keroman".  
    18.05.43
     "
Undocked.  
    21.05.43
     "
Basin trials.  
    22.05.43
     "
Loaded torpedoes.  
    23.05.43
     "
Shipyard sea trial, shipyard trim test.  
    24.05.43
     "
Ending of shipyard period.  
    25.05.43
     "
Loaded provisions.  
    26.05.43
     "
Degaussing , balanced the boat  
    27.05.43
     "
Loaded gear and consumables.  
    28.05.43
     "
Final trim test.  Calibrated the radio direction finder  
    29.05.43
Lorient
   
    13.45   Cast off for 5th patrol.  
    14.00   Test dive.  
    14.30   Surfaced.  
    15.00   In Sperrbrecher convoy, proceeding together with "U-508" to point Lantern.  Crew on the upper-deck, life jackets on, bulkheads closed.  
    15.30   Mine detonation between the escort vessels.  
    16.48 Point Lantern Sperrbrecher convoy ended, escorted by three minesweepers.  Waiting for "U-530".  
    18.56   Mech.Gefr. (T) Bender transferred to "M 21" due to burns caused by an Eto short circuit.  
    20.00 BF 6172    
    20.15  

Collision of two minesweepers, the escort for the outbound route cannot continue.

 
    21.25  

Minesweepers return to port.

 
        Proceeding on Kernleder route in company with "U-508" and "U-530".  
    30.05.43      
    00.00 Biscay

Course 235°.

 
      BF 5529    
      W 2-3, Sea 1, 6/10, 1026 mb    
    02.15   Dived, proceeded submerged at depth A -30 meters.  
           
           
Sun and Moon Data 29.05.43
 
- 3 -
 
           
           
           
    continued      
    30.05.43      
    04.00 BF 5547    
    08.00 BF 5571    
    12.00 BF 5493 Day's run:    96   nm  
      46° 45.5' N                    10.5   "    
      05° 32'    W                     106.5 nm  
    12.58   Surfaced, charging transit, course 245°.  
    14.53   Dived, proceeded submerged, course 240°.  
    16.00 BF 5488 Steering for BE 97.  
    20.00 BF 5488    
    22.06   Surfaced charging transit, course 245°.  
           
    31.05.43      
    00.00 Biscay

Course 245°.

 
      BF 5714    
      W 2, Sea 1-2, 8/10, 1025 mb    
    00.10   Dived, proceeded submerged at depth A -20 meters.  
    04.00 BF 4939    
    05.51 W 2, Sea 2, 9/10, 1013 mb Surfaced charging transit.  
    07.03   Dived, underwater run at depth A - 20 meters.  
    08.00 BF 4961    
    12.00 BF 4956 Day's run:    78 nm  
      46° 06' N                     25    "    
      07° 25' W                        93 nm  
    16.00 BF 4955    
    18.31   Surfaced charging transit, course 220°.  
    20.00 BF 4973    
      W 3, Sea 3, 5/10, 1015 mb    
    21.28   Dived, proceeded submerged at depth A -20 meters, course 225°.  
    01.06.43      
    00.00 Biscay

Course 245°.

 
      BF 4978    
    04.00 BF 7323    
    05.35 W 3-4, Sea 3-4, 7/10, 1017 mb

Surfaced charging transit, course 245°.

 
           
           
           
Sun and Moon Data 30.05.43
Sun and Moon Data 31.05.43
 
- 4 -
 
           
           
           
    continued      
    01.06.43      
    04.00 BF 7323    
    05.35 W 3-4, Sea 3-4, 7/10, 1017 mb

Surfaced charging transit, course 145°.

 
    06.45   Dived, proceeded submerged at depth A -20 meters, course 245°.
    08.00 BF 7328    
    12.00 BF 7351 Day's run:    58.9 nm  
      45° 16' N                    20.1    "    
      08° 29' W                       79.0 nm  
    16.00 BF 7351    
    16.26 WSW 5, Sea 4, 3/10, 1017 mb Surfaced charging transit, course 230°.  
    18.07   Dived, proceeded submerged at depth A -30 meters, course 250°.  
    20.00 BF 7372    
           
    02.06.43      
    00.00 Biscay    
      BF 7371    
    04.00 BF 7374 Course 250°.  
    05.05 WSW 3, Sea 4, 9/10, 1016 mb Surfaced charging transit, course 250°.  
    06.30   Dived, proceeded submerged at depth A -30 meters.  
    08.00 BF 7294    
    12.00 BF 7289 Day's run:    30.5 nm  
      44° 47' N                    22.5    "    
      09° 33' W                       53.0 nm  
    16.00 BF 7288    
    16.37 WSW 3, Sea 2-3, 4/10 Surfaced.  
    16.41 BF 7288 A Halifax aircraft came out of a cloud in 30°T, range 3,000 meters.  Too late to dive, machine gun ready for action.  Approach run from an altitude of 100 meters, repelled, aircraft turned away astern, no bombs dropped.  
    16.43   During over-fly:  Crash dive!  
    16.45  

Six bombs dropped at depth A -20 meters, no failures.

 
       

Proceeded submerged at depth A -10 meters.

 
        Air vent line of tube IV leaks, defective  
           
           
Sun and Moon Data 01.06.43
Sun and Moon Data 02.06.43
 
- 5 -
 
           
           
           
    continued      
    02.06.43      
    16.45  

defective spot is in ballast tank 8; tube IV suffers the whole outboard pressure, thus the ability to dive deep is limited.  Line was flanged at the pressure hull, sealed in the tube by a bronze cone and fixed, but offers no absolute safety.

 
    20.00 BF 7287    
    22.17   Surfaced charging transit.  
    23.50   Dived, proceeded submerged at depth A -20 meters, course 240°.  
           
    03.06.43      
    00.00 Biscay Course 250°.  
      BF 7436    
      W 2, Sea 2-3, 9/10, 1025 mb    
    04.00 BF 7435    
    05.21   Surfaced charging transit.  
    05.22 BF 7438 Aircraft in sight in 160°T, passing flight, range 3,000 meters, boat remained unnoticed, no detection.  
      W 1, Sea 1, 9/10, 1023 mb  
    07.05   Dived, proceeded submerged, depth A -0 meters.  
    08.00 BF 7452    
    12.00 BF 7451 Day's run:    47.5 nm  
      44° 22' N                    20.5   "    
      11° 01' W                       68.0 nm  
    16.00 BF 7443    
    18.37 BF Surfaced charging transit, course 240°.  
    20.00 BF 7448    
      W 2, Sea 1-2, 9/10, 1026 mb    
    20.56   Dived, proceeded submerged, depth A -20 meters.  
           
    04.06.43      
    00.00 Biscay Course 250°.  
      BE 9692    
    04.00 BE 9694    
           
           
           
Sun and Moon Data 03.06.43
Sun and Moon Data 04.06.43
 
- 6 -
 
           
           
           
    continued      
    04.06.43      
    05.50 W 1-2, Sea 2, 9/10, 1025 mb Surfaced charging transit, course 250°.  
    07.16   Dived, proceeded submerged at depth A -20 meters.  
    08.00 BE 9913    
    12.00 BE 9912 Day's run:    61.0 nm  
      43° 45' N                    36.5    "    
      12° 48' W                       97.5 nm  
    16.00 BE 9836    
    17.52   Surfaced, charging transit, course 250°.  
    19.28   Incoming Radio Message:  New objective square for Emmermann is 1st naval square square in DG 40.  . . . . .  
    20.00 BE 9844    
      WSW 1-2, Sea 2, overcast, 1025 mb    
    20.17   Dived, proceeded submerged at depth A -20 meters.  
           
    05.06.43      
    00.00 Atlantic

Course 250°.

 
      West of Cape Finisterre    
      BE 9768    
    04.00 BE 9767    
    05.48   Surfaced, charging transit.  
    07.53   Dived, proceeded submerged at depth A -20 meters.  
    08.00 BE 9776    
    08.12   Incoming Radio Message:  To Emmermann:  You are reminded of passing report.  
    12.00 BE 9777 Day's run:    85 nm  
      42° 58' N                    37    "    
      15° 54' W                     122 nm  
    16.00 BE 8999    
    18.20   Surfaced charging transit, course 250°.  
    19.19   Course 240°.  
    20.00 BF 3234    
      W 1, Sea 1, 1/10, 1023 mb    
    23.56   Sent Short Signal on 36-meters:  My position is naval square CF 31.  -"U-172"-  
           
    06.06.43      
    00.00 Atlantic

 

 
           
Sun and Moon Data 04.06.43
Sun and Moon Data 05.06.43
 
- 7 -
 
           
           
           
           
    06.06.43      
    00.00 Atlantic

Course 240°, transit speed.

 
      West of Cape Finisterre    
      CF 3191    
      W 1-2, Sea 2, 9/10, 1024 mb    
    00.55   Incoming Radio Message:  Contents of Short Signal confirmed.  
    04.00 CF 3413    
    08.00 CF 2389    
    12.00 CF 2617 Day's run:    155 nm  
      41° 44' N                      13   "    
      19° 46' W                       168 nm  
    16.00 CF 2529    
    20.00 CF 2575    
           
    07.06.43      
    00.00 Atlantic Course 240°.  
      Northeast of the Azores    
      CF 2732    
      W 1-2, Sea 1, 9/10, 1025 mb    
    00.27   Outgoing Radio Message:  From Emmermann:  On 1and 2 June no very low frequency reception. Missing messages with Serial No. 73 from 30 May, 82-94, 14-35, 45-54, 60, 61 from 2 June.  
    03.16   Incoming Radio Message:  1) … 2)  Serial numbers 73 and 31 will be repeated encoded, remaining missing Serial Nos. are no longer important.  
    04.00 CF 2751    
    08.00 CF 1966    
    08.53   Test dive.  
    09.34   Surfaced.  
    12.00 CF 1986 Day's run:    156.5 nm  
      40° 23' N                         2.5    "    
      22° 47' W                        159.0 nm  
    16.00 CF 4313    
    20.00 CF 4239    
    23.56   Outgoing Radio Message on 36-meters:  From "Emmermann":   Request new Ireland Circuit plan.  
           
           
Sun and Moon Data 06.06.43
Sun and Moon Data 07.06.43
 
- 8 -
 
           
           
           
           
    07.06.43      
    20.00 CF 4329    
    23.56   Outgoing Radio Message on 36-meters:   From "Emmermann":  Request new Ireland Circuit plan.  
           
    08.06.43      
    00.00 Atlantic Course 230°.  
      Northeast of the Azores    
      CF 4253    
      SW 2, Sea 2, 8/10, 1023 mb    
    00.35   Contents of the Radio Message were confirmed.  
    04.00 CF 4273    
    08.00 CE 6632    
    08.52   Test dive, drill, deep dive attempt to depth A +70 meters, tube IV holds tight.  
    11.40   Surfaced.  
    12.00 CE 6637 Day's run:    124 nm  
      39° 05' N                         7   "    
      25° 04' W                        131 nm  
    16.00 CE 6652    
    20.00 CE 6673    
           
    09.06.43      
    00.00 Atlantic Course 228°.  
      Azores    
      CE 6599    
      NW 2, Sea 2, 8/10, 1020 mb    
    02.50   Course 215° to objective square.  
    04.00 CE 6826    
    08.00 CE 6872    
    12.00 CE 9136 Day's run:  144 nm.  
      37° 22' N    
      27° 09.5' W    
    12.15   Test dive, drill.  
    12.58   Surfaced.  
           
           
Sun and Moon Data 08.06.43
Sun and Moon Data 09.06.43
 
- 9 -
 
           
           
           
    continued      
    09.06.43      
    16.00 CE 9164    
    20.00 CE 9421    
    23.30 CE 9444 Smoke cloud in 255°T, headed for it, steamer on course 70°, at nightfall sets navigation lights, recognized as a Portuguese vessel, prescribed neutrality markings, let it go.  
    23.42   Continued transit on course 215°.  
           
    10.06.43      
    00.00 Atlantic Course 215°.  
      South of the Azores    
      CE 9447    
      NW 1, Swell 1, 1/10, 1025 mb    
    01.05   Steamer out of sight.  
    04.00 CE 8923    
    08.00 CE 8951    
    12.00 CE 8974 Day's run:    159.3 nm  
      34° 57' N                        1.7    "    
      29° 24' W                        161.0 nm  
    16.00 DG 2138    
    20.00 DG 2182    
    20.15 - 21.15   Over deck work.  
           
    11.06.43      
    00.00 Atlantic Course 215°.  
      South of the Azores    
      DG 2416    
      W 1, Sea 0-1, 2/10, 1024 mb    
    04.00 DG 1682    
    08.00 DG 1912 Course 200°.  
    08.56   Test dive.  
    09.25   Surfaced.  
           
           
           
Sun and Moon Data 10.06.43
Sun and Moon Data 11.06.43
 
- 10 -
 
           
           
           
    continued      
    11.06.43      
    12.00 DG 1865 Day's run:    192.3 nm  
      32° 33' N                        1.2   "    
      31° 59' W                       193.5 nm  
    12.47   Incoming Radio Message:  
       

1)  Supply from Czygan from 12th June in naval square DG 4455, 30 cbm each: … "Emmermann" …  Avoid sending bearing signals, report execution only after being requested to do so.

 
        2) … 3) … after refueling: … "Emmermann" and "Lange" naval square GB 20.  
        4)  "Emmermann" today at 20.00 hours change to America 1 Circuit.  
    16.00 DG 1888    
    20.00 DG 4258 Switched to America 1 Circuit.  
           
    12.06.43      
    00.00 Central Atlantic Course 215°.  
      DG 4433    
      SE 1, Sea 0-1, 3/10, 1025 mb    
    03.08 DG 4453 Green flare in 140°T.  Steered towards it, nothing observed.  
    04.00 DG 4456    
    04.17   Course 281°.  
    04.50   Stopped at meeting point.  
    08.00 DG 4455    
    09.40   Crash dive! 2 single-engine aircraft in 22°T, far away, approach run, went to A +20 meters.  Apparently the aircraft didn't notice the boat because we were up-sun.  
    10.00   Course 180°, proceeded submerged.  
    11.00   Several depth charge detonations heard.  
    12.00 DG 4459 Day's run:    135 nm  
      30° 40' N                        5   "    
      33° 35' W                       140  nm  
    14.00 DG 4459 At periscope depth.  Martlet aircraft flies over the boat at an altitude of 300 meters.  Therefore the aircraft carrier must still be in the vicinity.  Went to depth A ±0 meters and ran off to the south.  
           
           
           
Sun and Moon Data 11.06.43
Sun and Moon Data 12.06.43
 
- 11 -
 
           
           
           
    continued      
    12.06.43      
    16.00 DG 4483 In the afternoon many violent bomb and depth charge detonations heard in the vicinity.  
    20.00 DG 4486    
    23.55   Surfaced, ran off on course 180°.  
           
    13.06.43      
    00.00 Central Atlantic Awaiting report from another boat concerning air surveillance in the supply area.  Assume Czygan has been attacked.  
      DG 4723  
      SW 2, Sea 0-1, 5/10, 1024 mb  
    04.00 DG 4786 As nobody reports :  
    04.40   Outgoing Radio Message:  From Emmermann:  Constant air activity of carrier-borne aircraft over meeting point, unsuitable, setting off to the south.  
    08.00 DG 7129    
    08.40 Test dive. Depth control training, observation of the air space from periscope depth.  
    12.00 DG 7159 Day's run:    87.0 nm  
      28° 50' N                    28.5   "    
      33° 35' W                     115.5  nm  
    12.03   Surfaced.  
    12.55   Incoming Radio Message:  Supply-group Czygan meeting point transferred 100 nm to the south.  
    14.00   Proceeding on course 350° for new meeting point.  
    16.00 DG 7185    
    19.20 DG 7155 "U-530" in sight in 5°T, exchanged Recognition Signals.  
    20.00 DG 7152 Proceeded in company with U-530 on course 0° for new meeting point.  
    21.00   Boats arrived at meeting point.  Experiences exchanged. "U-530" wasn't attacked by aircraft bombs and didn't notice any air activity, so assume that Czygan has been knocked off.  
    21.00 - 23.00   On course 90° and 270° cruising back and forth in order to keep the boat underway during the day.  
           
    14.06.43 Central Atlantic    
    00.00 DG 7152

Stopped at meeting point.

 
      ENE 2, Sea 2, 5/10, 1025 mb In order to inform the command of the situation:  
           
           
           
           
Sun and Moon Data 13.06.43
 
- 12 -
 
           
           
           
    continued      
    14.06.43      
    00.00  

Outgoing Radio Message on 36-meters:  From "Emmermann":  At meeting point together with "Lange".  I assume that "Czygan" had been knocked off, on 12 June heavy bomb and depth charge attack heard in the vicinity.  Request orders.

 
    00.10   "U-530" dived in order to carry out repairs.  
    01.15   Confirmation of radio message.  
    01.18   Incoming Radio Message:  To "Emmermann".  Await orders. "Czygan" report position.  
    04.00 DG 7152    
    08.00 DG 7152    
    09.00   On course 90° and 270° cruised back and forth.  
    10.55   "U-530" in sight in 200°T.  
    12.00 DG 7151

Day's run: 77 nm.

 
      29° 01' N    
      33° 50' W    
           
    12.56  

Incoming Radio Message:

 
        1)  Previous order concerning supply for "Lange", "Kummetat" and "Friedrich" canceled, the boats are to make for DG 7777 and wait.  
        2)  "Emmermann" is to wait at meeting point until darkness is falling.  Then signal 'Yes' or 'No' announcing whether "Czygan" has arrived or not and make for DG 7777 alone or in company with "Czygan".  
    13.00   "U-530" is on her way to the new meeting point.  
    14.30   "U-530" out of sight.  
    14.49   "U-572" (Kummetat) in sight in 110°T, recognition signals exchanged, experiences exchanged.  
    16.00 DG 7152    
    16.33   "U-572" out of sight.  
    20.00 DG 7152    
    23.00   On course 190° for new meeting point.  
    23.15 - 00.30   Starboard exhaust gas valve repaired.  
           
    15.06.43      
    00.00 Central Atlantic Course 185°.  
      DG 7143    
      ENE 1-2, Sea 1, 8/10, 1024 mb    
    03.57   Sent short signal on 36-meters:  ' No'.  -"U-172"-  
           
           
Sun and Moon Data 14.06.43
 
- 13 -
 
           
           
           
    continued      
    15.06.43      
    04.00 DG 7179 Batteries charged.  
    06.11   Contents of Short Signal confirmed.  
    06.24   Incoming Radio Message:  At present unfavorable fuel situation requires the employment of some of the IX C-boats as tankers.  Therefore "Emmermann" and … are to refuel from "Lange" in DG 7777 after 15 June, 30 cbm each and 1-1 weeks provisions … Subsequently, "Lange" is to report execution and return together with "Musenberg".  The remaining boats are to head for the ordered objective squares.  
    08.00 DG 7445 Firing control exercises, upper-deck work.  
    09.15  

"Kummetat" reports U-boat in DG 7715 and was noticed.  Circled around naval square 7715 to the west.

 
    09.35   Course 235°.  
    12.00 DG 7474 Day's run:  143.5 nm.  
      27° 43.5' N    
      34° 16.0' W    
    12.15   Test dive.  
    12.35   Surfaced.  
    13.20   Incoming Radio Message: 1) … 2) … 3)   "Emmermann" today at 20.00 hours change to 'America 2'-circuit.  
    14.00   Course 180°.  
    16.00 DF 9938    
    17.16   Course 135° to the meeting point.  
    20.00 DF 9996    
    20.30   Boat arrived at meeting point.  Cruised back and forth on course 90° and 270°.  Stopped after nightfall.  
           
    16.06.43      
    00.00 Central Atlantic    
      DF 9998    
      SE 1, Sea 1, 8/10, Rain showers, 1022 mb    
    01.30   After a navigation fix course 75° to the meeting point.  
    03.15 Stopped at meeting point.    
    04.00 DG 7777    
           
           
Sun and Moon Data 15.06.43
 
- 14 -
 
           
           
           
    continued      
    16.06.43      
    08.00 DG 7777    
    09.39   After a navigation fix,course to the meeting point is 265°.  
    11.40 DF 9999 "U-530" in sight in 260°T, exchanged Recognition Signals.  
    12.00 DF 9999 Day's run:    106.7 Nm  
      26° 45.5' N                         0.8   "    
      34° 20.5' W                     107.5   Nm  
       

Hose connection established with "U-530", began fuel and provisions supply.

 
        MeOGfr. Herkner taken aboard from "U-530".  
    16.00 DF 9992    
    18.00   Provisions supply ended.  
    18.20 DF 9998

Mast tips at 255° in sight.

 
       

Hose connection detached.  Enemy's speed matched, fast independent ship, 13-14 knots, northerly course.  25 cbm of fuel taken over, lacking 5 cbm.  As I would use just as much fuel for hunting the steamer, I let U-530 hunt her, further supply dispensed with, did not wait.  Continue southward passage.

 
    19.35   Course 180°.  
    19.57 DF 9992 "U- 530" out of sight at 5°.  
    20.00   Switched to America 2 Circuit.  
    20.10   Steamer out of sight in 330°T.  
    22.17   Course 165°.  
           
    17.06.43      
    00.00 Central Atlantic Course 165°.  
      DS 1238    
      E 1, Sea 1, 9/10, 1022 mb    
    04.00 DS 1296    
    08.00 DS 1566    
    08.42   Test dive.  
    09.15   Surfaced.  
    12.00 DS 1678 Day's run:    151.5 nm  
      24° 55' N                         1.5   "    
      34° 11' W                        153.0 nm  
           
           
Sun and Moon Data 16.06.43
Sun and Moon Data 17.06.43
 
- 15 -
 
           
           
           
    continued      
    17.06.43      
    16.00 DS 1949    
    20.00 DS 4324    
           
    18.06.43      
    00.00 Central Atlantic Course 165°.  
      DS 4383    
      E 1, Sea 1, 8/10, 1021 mb    
    04.00 DS 4637    
    08.00 DS 4696    
    12.00 DS 5717 Day's run:  180 nm.  
      21° 55' N    
      33° 21' W    
    12.48   Test dive, trim regulation exercises.  
    13.30   Surfaced.  
    13.35 DS 5744 Steamer in sight in 105°T.  Speed matched, steering 247°, straight-line course, 12 knots, maneuvered ahead.  
    15.20   Dived for underwater attack.  
    15.55 DS 4944 Recognized as a neutral steamer. Spanish MAR CANTABRIO, 6,632 GRT, in ballast, correct neutrality markings, let it pass.  
    16.45   Steamer out of sight.  
    17.00   Surfaced, continued transit, course 165°.  
    20.00 DS 7338    
           
    19.06.43      
    00.00 Central Atlantic Course 165°.  
      DS 7394    
      ESE 1-2, Sea 1-2, 7/10, 1021 mb    
    04.00 DS 7635    
    08.00 DS 7696    
    12.00 DS 8741 Day's run:    171.9 nm  
      19° 10' N                         4.1   "    
      33° 20' W                        176.0 nm  
    16.00 DS 8779    
    20.00 EH 2154    
           
           
           
Sun and Moon Data 18.06.43
Sun and Moon Data 19.06.43
 
- 16 -
 
           
           
           
    continued      
    19.06.43      
    16.00 DS 8779    
    20.00 EH 2154    
           
    20.06.43      
    00.00 Central Atlantic Course 165°.  
      EH 2188    
      ESE 1-2, Sea 1-2, Overcast, 1018 mb    
    04.00 EH 2464    
    08.00 EH 2735    
    09.35   Test dive.  
    10.01   Surfaced.  
    12.00 EH 2762 Day's run:    168.9 nm  
      16° 27' N                         1.1   "    
      32° 40' W                        170.0 nm  
    16.00 EH 2799    
    20.00 EH 5241    
           
    21.06.43      
    00.00 Central Atlantic Course 162°.  
      EH 5278    
      NE 1, Sea 1, 4/10, 1019 mb    
    04.00 EH 5543    
    08.00 EH 5588    
    12.00 EH 5856 Day's run:  176 nm.  
      13° 41' N    
      31° 57' W    
    16.00 EH 8232    
    20.00 EH 8269    
           
    22.06.43      
    00.00 Central Atlantic Course 162°.  
      Southwest of Cape Verde    
      EH 8539    
      ESE 1, Sea 1, 4/10, 1017 mb    
           
Sun and Moon Data 20.06.43
Sun and Moon Data 21.06.43
 
- 17 -
 
           
           
           
    continued      
    22.06.43      
    04.00 EH 8678    
    08.00 EH 8954    
    09.33   Test dive.  
    09.53   Surfaced.  
    12.00 EH 8987 Day's run:     183.3 nm  
      10° 31' N                         0.7   "    
      31° 13' W                        184.0 nm  
    16.00 EH 2356    
    20.00 ER 2634    
           
    23.06.43      
    00.00 Central Atlantic    
      ER 2668 Course 162°.  
      NE 2, Sea 2, 9/10, 1014 mb    
    04.00 ER 2933    
    08.00 ER 3772    
    12.00 ER 6124 Day's run:  176 nm.  
      07° 38' N    
      30° 32' W    
    16.00 ER 6157    
    20.00 ER 6451    
    22.15   Admiral Triton aboard inspecting candidates for the initiation ceremony.  
    22.25   Test dive, damage control exercises.  
    23.47   Surfaced.  
           
    24.06.43      
    00.00 Central Atlantic Course 162°.  
      ER 6482    
      SSE 1, Sea 2, 6/10, 1014 mb    
    04.00 ER 6762    
    08.00 ER 6767    
    12.00 ER 6798 Day's run:     155.2 nm  
      05° 07' N                         1.3   "    
      29° 53' W                        156.5 nm  
           
Sun and Moon Data 22.06.43
Sun and Moon Data 23.06.43
Sun and Moon Data 24.06.43
 
- 18 -
 
           
           
           
    continued      
    24.06.43      
    16.00 ER 9244    
    20.00 ER 9512    
           
    25.06.43      
    00.00 Central Atlantic Course 160°.  
      ER 9546    
      SE 1-2, Sea 1-2, 4/10, 1014 mb  
    04.00 ER 9587    
    08.00 ER 9855    
    08.45   Test dive.  
    09.08   Surfaced.  
    12.00 ER 9895 Day's run:     153.1 nm  
      02° 35' N                         0.4   "    
      29° 03' W                        153.5 nm  
    12.30 ER 9894 Crash dive!  Multi-engine land-based aircraft in 210°T, northerly course, flying at high altitude.  
    14.05   Surfaced, course 150°.  
    16.00 FC 3236    
    20.00 FC 3349    
           
    26.06.43      
    00.00 Central Atlantic Course 145°.  
      East of St Pauls Rock    
      FC 3611    
      SE 1-2, Sea 1, 5/10, 1014 mb    
    04.00 FC 3655    
    08.00 FC 3921    
    12.00 FC 3928 Day's run:     140.5 nm  
      00° 18' N                         3.5   "    
      28° 25' W                        144.0 nm  
    16.00 FC 3994    
    20.00 FC 6338    
    22.15   His Majesty King Neptune aboard, initiation ceremony.  
           
           
Sun and Moon Data 25.06.43
Sun and Moon Data 26.06.43
 
- 19 -
 
           
           
           
           
    27.06.43      
    00.00 South Atlantic

Course 160°.

 
      Northeast Fernando de Noronha    
      FC 6363    
      ESE 2, Sea 2, 6/10, 1014 mb    
    04.00 FC 6393    
    08.00 FD 4414    
    09.32   Test dive.  
    10.09   Surfaced.  
    12.00 FD 4479 Day's run:     141.9 nm  
      02° 02' S                         0.6   "    
      27° 44' W                        142.5 nm  
    16.00 FD 4755    
    20.00 FD 4785

Course 175°.  Fuel/ballast tank VII converted for use as a ballast tank.

 
           
    28.06.43      
    00.00 South Atlantic

Course 175°.

 
      East of Fernando de Noronha    
      FD 7154    
      SE 2, Sea 2-3, 3/10, 1014 mb    
    04.00 FD 7421    
    05.15 FD 7427 Shadow in 245°T, turned towards, it's a freighter, zigzagging around southerly course, speed 10 knots, maneuvered ahead.  
      SE 1-2, Sea 1-2, 1/10, 1014 mb, clear, dark night  
    06.43   Double-shot from tubes I and II:  Target angle 30°, depth 4 meters and 7 meters, (tube II Pi 2) target speed 10 knots, range 1,000 meters, bow left 80°, aimed at foremost and aft masts.  
    06.44  

Hit after 57 seconds = 880 meters at the bow hold.  High dark explosion plume, steamer settled forward; lifeboats were lowered.  Interfered when emergency message was sent on 600-meter frequency.  Steamer sinks over the forestem.  Second torpedo, presumably the T3, detonated at the end of its run.

 
    07.07 FD 7458

The steamer sank.

 
        British 'CORNISH CITY", 4,952 GRT, carrying coal and coke from England to Bahia.  
           
           
Sun and Moon Data 27.06.43
 
- 20 -
 
           
           
           
    continued      
    28.06.43   British "CORNISH CITY", 4,952 GRT, carrying coal and coke from England to Bahia.  
        All attempts to get measurement results by Fu.M.G. so far unsuccessful, every offered opportunity was used, several breakdowns were repaired.  
       

Outer tube door of tube V is out of service; it cannot be opened or closed.

 
    08.00 FD 7482    
    09.38   Test dive.  
    10.13   Surfaced.  
    12.00 FD 7713 Day's run:     165.7 nm  
      04° 49' S                         0.8   "    
      27° 43' W                        166.5 nm  
    16.00 FD 7746 Outer tube door of tube V is in service again.  
    20.00 FK 3116    
    21.46   Outgoing Radio Message on 36-meters:  From "Emmermann":  Today sank CORNISH CITY, naval square FD 7458, southerly course, carrying coal to Bahia.  13 + 6 torpedoes, 163 cbm.  
    23.30   Contents of Radio Message confirmed.  
           
    29.06.43      
    00.00 South Atlantic

Course 175°.

 
      South of Fernando de Noronha    
      FK 3179    
      SE 3-4, Sea 3, 7/10, 1014 mb    
    04.00 FK 3443    
    08.00 FK 3476    
    12.00 FK 3719 Day's run:  173 nm.  
      07° 48' S    
      27° 44' W    
    16.00 FK 3776    
    20.00 FK 6149    
    30.06.43      
    00.00 South Atlantic Course 175°.  
      FK 6187    
      ESE 2, Sea 2, 2/10, 1015 mb    
           
           
           
Sun and Moon Data 28.06.43
Sun and Moon Data 29.06.43
 
- 21 -
 
           
           
           
    continued      
    30.06.43      
    04.00 FK 6451    
    08.00 FK 6487    
    08.30   Test dive.  
    09.07   Surfaced, course 180°.  
    12.00 FK 6719 Day's run:     152 nm  
      10° 25' S                         1   "    
      27° 44' W                        153 nm  
    16.00 FK 6749    
    20.00 FK 9116 Course 195°.  
           
    01.07.43      
    00.00 South Atlantic Course 195°.  
      FK 8393    
      ESE 4-5, Sea 4, 6/10, 1018 mb  
    04.00 FK 8398    
    08.00 FK 8661    
    12.00 FK 8685 Day's run:  154 nm.  
      12° 47' S    
      28° 28' W    
    16.00 FK 8919    
    20.00 FK 8975    
           
    02.07.43      
    00.00 South Atlantic Course 195°.  
      FR 2344    
      E 3, Sea 3, 3/10, 1018 mb    
    04.00 FR 2536    
    08.00 FR 2564    
    08.55   Test dive.  
    09.19   Surfaced.  
    12.00 FR 2588 Day's run:     188 nm  
      15° 38' S                         1   "    
      29° 24' W                        189 nm  
    13.50   Incoming Radio Message:  1) … 2) … 3) … 4) … 5) "Emmermann" is given freedom of action in the area between FJ 93 and GC 47 and west of the longitude of naval square FR 53.  
           
           
           
Sun and Moon Data 30.06.43
Sun and Moon Data 01.07.43
Sun and Moon Data 02.07.43
 
- 22 -
 
           
           
           
    continued      
    02.07.43      
    13.50   Incoming Radio Message:  1) … 2) … 3) … 4) … 5) "Emmermann" is given freedom of action in the area between FJ 93 and GC 47 and west of the longitude of naval square FR 53.  
    16.00 FR 2846    
    20.00 FR 2878    
           
    03.07.43      
    00.00 South Atlantic Course 195°.  
      FR 5163    
      E 3-4, Sea 3, 3/10, 1020 mb    
    04.00 FR 5191    
    08.00 FR 5425 Course 230°.  
    12.00 FR 5454 Day's run:  146.5 nm.  
      17° 51' S    
      30° 23' W    
    16.00 FR 5471    
    20.00 FR 4923    
           
    04.07.43      
    00.00 South Atlantic Course 230°.  
      FR 4927    
      E 1, Sea 1-2, 4/10, 1021 mb    
    04.00 FR 4944    
    08.00 FR 4894    
    08.35   Test dive.  
    09.15   Surfaced.  
    12.00 FR 7221 Day's run:     139.5 nm  
      19° 15' S                         1.0   "    
      32° 10' W                        140.5 nm  
    16.00 FR 7163    
    20.00 FR 7185    
    21.30 - 22.10   Over deck work.  
           
           
           
Sun and Moon Data 03.07.43
Sun and Moon Data 04.07.43
 
- 23 -
 
           
           
           
           
    05.07.43      
    00.00 South Atlantic

Course 260°.  My intention is to operate the last days before the full-moon period on traffic assumed to be running close to the coast.

 
      FQ 9633  
      ENE 1, Sea 1, 3/10, 1020 mb  
    04.00 FQ 9621    
    08.00 FQ 9531    
    11.50   Test dive.  
    12.00 FQ 9516 Day's run:     168.5 nm    Course 270°.  
      20° 13' S                         0.5   "    
      34° 56' W                        169.0 nm  
    12.14   Surfaced.  
    16.00 FQ 9435    
    20.00 FQ 9415    
           
    06.07.43      
    00.00 South Atlantic

Course 270°.

 
      FQ 8633    
      NE 1, Sea 1, 2/10, 1019 mb    
    04.00 FQ 8631    
    08.00 FQ 8612    
    10.25  

Dived, proceeded submerged at periscope depth in order to approach the coast unnoticed.

 
       

Announcement of radio message received:  To Kptlt. Emmermann:  In grateful appreciation of your heroic employment in the fight for the future of our nation you are awarded the Oak Leaves for the Knights Cross as 256th soldier of the German Armed Forces.

 
                                                                Adolf Hitler.  
    12.00 FQ 8531 Day's run:     129.0 nm  
      20° 06.5' S                         4.5   "    
      37° 15.5' W                        133.5 nm  
    16.00 FQ 8521    
    20.00 FQ 8521    
    22.00   Surfaced.  
           
           
           
Sun and Moon Data 05.07.43
Sun and Moon Data 06.07.43
 
- 24 -
 
           
           
           
           
    07.07.43      
    00.00 South Atlantic

Course 270°.

 
      East coast of Brazil    
      FQ 8432    
      NW 1, Sea 1, 2/10, 1020 mb    
    00.10   Enemy radar detection 170 cm, dived.  
    01.20   Surfaced.  
    04.00 FQ 8413    
    08.00 FQ 7632    
    10.02 FQ 7389 White lights of a fishing-boat in 240°T.  
    10.20 S 4-5, Sea 4, 8/10, 20 mb

Dived, proceeded submerged, course 315°.

 
      Vis. poor, Rain showers    
    12.00 FQ 7388 Day's run:     76     mm  
      20° 08.0' S                      31.5   "    
      39° 08.5' W                        107.5 mm  
    16.00 FQ 7622    
    20.00 FQ 7373    
    22.29   Surfaced, course 110°.  
           
    08.07.43      
    00.00 South Atlantic Course 110°.  
      Southeast of Rio Doce    
      FQ 7381    
      SSE 4, Sea 4, misty, overcast, 1022 mb    
    04.00 FQ 7398    
    08.00 FQ 8412    
    12.00 FQ 8191 Day's run:     81.5 nm  
      20° 01' S                      26.5  "    
      38° 09.5' W                       108.0 nm  
    16.00 FQ 8511    
    20.00 FQ 8522 Course 250°.  
           
           
           
           
Sun and Moon Data 07.07.43
Sun and Moon Data 08.07.43
 
- 25 -
 
           
           
           
    continued      
    08.07.43      
    20.30  

Incoming Radio Message:  1) To "Emmermann":  According to new reports there is heavy single ship and convoy traffic to FJ 8470 coming from south and east.  The harbor is also an assembly point for convoys to and from ED 99.  U-boat sighting report from FQ 5240.  2) - 5) …

 
        My intention is to operate on Rio – Capetown traffic during the full-moon period and subsequently again close to the southern coast of Bahia.  
    21.00 - 22.00   Exhaust gas valve repaired.  
           
    09.07.43      
    00.00 South Atlantic Course 250°.  
      FQ 8463    
      SSE, Sea 2-3, 4/10, 1026 mb    
    04.00 FQ 8458 Course 160°.  
    08.00 FQ 8489    
    10.15   Test dive.  
    11.13   Surfaced, course 130°.  
    12.00 FQ 8738 Day's run:     131.5 nm  
      21° 14' S                          2.5  "    
      38° 03' W                        134.0 nm  
    16.00 FQ 8845    
    20.00 FQ 8882    
    23.00   Course 180°.  
           
    10.07.43      
    00.00 South Atlantic Course 180°.  
      FQ 8899    
      SSE 2, Sea 2, 4/10, 1026 mb    
    04.00 GB 3263    
    08.00 GB 3296    
    12.00 GB 3539 Day's run:  137 nm  Course 230°.  
      22° 58.5' S    
      37° 01.0' W    
           
           
           
Sun and Moon Data 09.07.43
Sun and Moon Data 10.07.43
Sun and Moon Data 11.07.43
 
- 26 -
 
           
           
           
    continued      
    10.07.43      
    16.00 GB 3536    
    20.00 GB 3575    
           
    11.07.43      
    00.00 South Atlantic Course 230°.  
      Southeast Rio de Janeiro    
      GB 3728    
      S 0-1, Sea calm, 7/10, 1026 mb    
    01.15 GB 3749 Lights of a steamer in 200°T, neutral ship, southeasterly course, no Fu.M.G. echo.  Let it go.  
    01.58   Steamer out of sight at 130°.  
    04.00 GB 3748    
    08.00 GB 2997    
    10.10   Test dive.  
    10.40   Surfaced.  
    12.00 GB 5324 Day's run:     160.5 nm  
      24° 43' S                          1.5   "    
      39° 17' W                        162.0 nm  
    16.00 GB 5341    
    20.00 GB 5291    
           
    12.07.43      
    00.00 South Atlantic Course 230°.  
      Southeast of Rio de Janeiro    
      GB 5278    
      SSW 0-1, Sea 0, 1/10, 1025 mb    
    04.00 GB 5438    
    05.10 GB 5437 Shadow in sight int 308°T, it's a steamer zigzagging sharply from 70° to 130°, general course 105°, speed 15 - 16 knots, submerged after moonset.  
    06.56   Three- fan from tubes I, II, IV:  Three G7e torpedoes, target angle 30°, depth 4 meters, target speed 16 knots, spread 130 meters, range 500 meters, bow left 92°.  
    06.57   Hit at the engine room after 57.5 seconds = 880 meters.  Wide dark explosion plume,  
           
           
Sun and Moon Data 12.07.43
 
- 27 -
 
           
           
           
    continued      
    12.07.43      
    06.57   Light glow of fire, the type C2 steamer stopped and lowered lifeboats.  Drops by the stern.  Coup de grâce necessary.  
    07.13  

Coup de grâce from tube VI:  G7e torpedo, target angle 30°, depth 6 meters, range 1,000 meters.

 
        Missed!  Probably depth setting failure.  The torpedo ran on a straight course and could be observed nearly up to its target.  
    07.25  

Coup de grâce from tube V:  G7e, target angle 30°, depth 5 meters, range 1,500 meters.

 
        Hit aft after 66.2 sec = 1,025 meters in the aftership.  Strong detonation, glow of fire, steamer sinks rapidly over stern-post.  
    07.30 GB 5466

Steamer sunk.

 
       

American "AFRICAN STAR", 8,200 GRT, owned by American S.O. African Line, New York, with mixed cargo and ore from Rio to New York.  Completed 1940.

 
        The steamer left Rio yesterday with air escort and had instructions to steer south from Rio 105° and change course to north when far out to sea.  
    07.57   Ran off on a course of 130°.  
    08.00 GB 5544    
    12.00 GB 5585 Day's run:     149.0 nm  
      26° 12' S                          2.0  "    
      40° 11' W                        151.0 nm  
    16.00 GB 5836    
    16.03   Test dive.  
    16.25   Surfaced.  
    18.41 GB 5918

Cash dive! on sighting a land-based twin engine aircraft in 330°T, range 10,000 meters, approaching, probably didn't notice the boat.  Went to depth A +0 meters.

 
        Ran off on course 90°.  
    20.00 GB 5943    
    20.55   Surfaced.  
    21.00   Course 120°.  
           
    13.07.43      
    00.00 South Atlantic

Course 60°.

 
      Southeast of Rio de Janeiro    
      GB 5964    
      Wind still, Sea calm    
           
Sun and Moon Data 12.07.43
 
- 28 -
 
           
           
           
           
    13.07.43      
    00.00 South Atlantic    
      Southeast of Rio de Janeiro Course 60°.  
      GB 5964    
      Wind still, Sea calm, 2/10, 1028 mb    
    04.00 GB 6718    
    08.00 GB 6723    
    12.00 GB 6572 Day's run:     134.0 nm  
      25° 11' S                          6.5  "    
      37° 48' W                        140.5 nm  
    16.00 GB 6556    
    20.00 GB 6539    
    20.30  

Outgoing Radio Message:  From "Emmermann":

 
        1)  FQ 73 and to the east nothing sighted.  Only once air activity at night on 170 cm.  
        2)  On July 12th sunk "AFRICAN STAR" in GB 5466, 8,200 GRT, 105°, 15 knots, with ore and mixed cargo bound for New York.  Instructed to steer south from Rio, then 105°, and change course to north when far out to sea.  
        3)  8 + 6 torpedoes, 120 cbm, question replenishment.  Predominately calm, smooth sea, set off during moon period.  All positions naval squares.  
        4)  Goliath:  a) 5, b) 15, d) constant.  
           
    14.07.43      
    00.00 South Atlantic

Course 60°.

 
      GB 6623    
      E 0-1, Sea 0, 5/10, 1028 mb    
    04.00 GC 4144    
    08.00 GC 4158    
    12.00 GC 4163 Day's run:  158 nm.  
      24° 56' S    
      35° 18' W    
    13.16   Incoming Radio Message:  1) … 2) … 3) "Emmermann" and … probably possible to supply in ES after the middle of August.  However report when fuel inventory for reaching naval square DG 70 is still guaranteed.  
           
           
Sun and Moon Data 13.07.43
Sun and Moon Data 14.07.43
 
- 29 -
 
           
           
           
    continued      
    14.07.43      
    16.00 GC 4225    
    20.00 GC 1899    
    21.00 - 00.20   Four G7a torpedoes reloaded from the upper deck.  Fuel/ballast tank VI converted for use as a ballast tank.  
           
    15.07.43      
    00.00 South Atlantic

Course 60°.

 
      GC 1949    
      SW 1, Sea 1, 8/10, 1026 mb    
    04.00 GC 1953    
    08.00 GC 2714    
    08.10   Test dive.  
    08.40   Surfaced.  
    12.00 GC 1697 Day's run:     148.5 nm  
      23° 29' S                          1.5  "    
      33° 36' W                        150.0 nm  
    16.00 GC 1649    
    17.56 GC 1644 Mast heads in 270°T.  A steamer on northeasterly course, slightly smoking.  Maneuvered ahead.  Enemy steers course 45°, speed 11 knots.  
      SW 2, Sea 1-2, 8/10, 1023 mb  
    19.19   Dived for underwater attack.  Steamer steers on a straight course.  
    20.00 GC 1615 Perfect stern approach.  
    20.43  

Double-shot from tubes V and VI:  Two G7e torpedoes, target angle 30°, depth 4 meters, target speed 11 knots, range 900 meters, bow left 84° and 90°, aimed at foremost and aft masts.

 
        Hit at the engine room after 59 seconds = 910 meters.  Wide black explosion plume, steamer lets steam off and stops.  Has a slight list to port and launches a lifeboat.  Steamer settles down only a bit and remains on an even keel. Coup de grâce necessary.  
    21.16  

Coup de grâce from tube I:  G7a torpedo, target angle 40°, depth 5 meters, range 1,000 meters, aimed at the forward cargo hold.

 
        Hit 50 meters forward of aim point after 60 seconds = 1,225 meters.  Very wide black explosion plume, debris flying through the air.  Steamer capsizes to starboard and sinks over the forestem.  
           
           
Sun and Moon Data 15.07.43
 
- 30 -
 
           
           
           
    continued      
    15.07.43      
    21.20   Steamer sunk.  
    21.24  

Surfaced.

 
        English "HARMONIC", 4,558 GRT, with mixed cargo from Buenos Aries to Freetown.  
    21.55   Turned off on a deceptive-course of 180°.  
    22.18   Lifeboat out of sight on course 0°.  
    22.34   Course 60°.  
           
    16.07.43      
    00.00 South Atlantic Course 60°.  
      GC 1623    
      SW, Sea 2-3, 8/10, 1023 mb    
    04.00 GC 1396    
    08.00 GC 2157    
    12.00 GC 2161 Day's run:     142.3 nm  Course 300°.  
      22° 19' S                          6.2   "    
      32° 45' W                        148.5 nm  
    12.08   Test dive.  
    12.36   Surfaced.  
    16.00 GC 2116    
    19.50 FQ 9998 Mast heads in 320°T.  It's a steamer on northeasterly course, zigzagging around a course of 60°-70°.  Maneuvered ahead.  
    20.00 FQ 9998    
      SSE 3, Sea 3, 5/10, 1025 mb    
    20.16 FQ 9995 New mast heads in 40°T, directly ahead, on opposite course, target angle 10°, unable to evade, therefore operated on the new target.  Turned around, maneuvered ahead.  Can just hold position at AK against the seas, steamer zigzags strongly around course 215°, speed 15 knots.  Let myself fall back in twilight.  
    23.19 Daylight, Full moon night

Double shot fired from tubes I and III:  Two G 7a torpedoes, target angle 40°, depth 3 meters, target speed 15 knots, range 2,000 meters, bow right 80° and 85°.  Aimed at foremost and aft masts.

 
        Target is a small freighter, 1,500 - 2,000 GRT, short compact forms, short, flat funnel.  
        Missed!  
           
           
           
Sun and Moon Data 16.07.43
 
- 31 -
 
           
           
           
    continued      
    16.07.43      
        Our enemy must have seen the bubble-track in the moonlight or turning off revealed our presence.  Suddenly he turned hard towards us and opened 20mm fire.  
    23.27   Crash dive!, went to depth A +20 meters.  
        Heard one depth charge to deter us, followed by noises similar to depth sounding explosions.  
           
    17.07.43      
    00.00 South Atlantic Forced to let the vessel go, overtaking impossible due to high target speed.  
      GC 1364  
      SSE 2-3, Sea 3, 5/10    
    01.55   Surfaced.  Course 50°.  
    03.40  

Outgoing Radio Message:  From "Emmermann":

 
        1)  Yesterday unsuccessfully chased freighter on course 70°, at the same time another freighter sighted on course 215°, speed 15 knots.  In GC 1364, missed twice, was noticed when turning away, driven off.  
        2)  Sunk:  On July 7th in naval square GC 1613 HARMONIC, course 45°, with mixed cargo from Buenos Aries to Freetown.  
        3)  7 + 2 torpedoes, 110 cbm.  
    04.00 GC 2114    
    08.00 FR 7784    
    12.00 FR 7768 Day's run:     157.4 nm  
      21° 34' S                         7.6   "    
      32° 38' W                        165.0 nm  
    16.00 FR 7842    
    20.00 FR 7815    
           
    18.07.43      
    00.00 South Atlantic    
      FR 7586    
      S 4-5, Sea 4, 8/10, Rain showers, 1028 mb    
    04.00 FR 7566    
    08.00 FR 7624 Course 300°.  
    12.00 FR 7299 Day's run:  128 nm.  
      20° 05' S    
      31° 37' W    
           
           
Sun and Moon Data 17.07.43
Sun and Moon Data 18.07.43
 
- 32 -
 
           
           
           
    continued      
    18.07.43      
    12.15   Test dive.  
    13.11   Surfaced.  
    16.00 FR 7282    
    20.00 FR 7244    
           
    19.07.43      
    00.00 South Atlantic Course 300°.  
      FR 7167    
      S 3, Sea 3, 5/10, Rain showers, 1025 mb    
    04.00 FR 7113    
    08.00 FQ 6995 Course 60°.  
    12.00 FQ 6955 Day's run:     141.5 nm  
      18° 50' S                          2.0    "    
      33° 55' W                        143.5 nm  
    16.00 FQ 6929    
    20.00 FR 4711    
           
    20.07.43      
    00.00 South Atlantic Course 60°.  
      FR 4488    
      E 2, Sea 2-3, 5/10, 1023 mb    
    04.00 FR 4492    
    08.00 FR 4543    
    10.24   Test dive.  
    10.42   Surfaced.  
    12.00 FR 4526 Day's run:     135 nm  
      17° 33' S                          1   "    
      31° 58' W                        136 nm  
    16.00 FR 4298    
    20.00 FR 4382    
           
    21.07.43      
           
           
           
           
Sun and Moon Data 19.07.43
Sun and Moon Data 20.07.43
 
- 33 -
 
           
           
           
           
    21.07.43      
    00.00 South Atlantic Course 60°.  
      FR 4368    
      SE 2-3, Sea 2-3, 7/10, Rain showers, 1021 mb    
    04.00 FR 5114    
    08.00 FR 5121    
    12.00 FR 2798 Day's run:  130 nm.  
      16° 28' S    
      29° 52' W    
    16.00 FR 2846    
    20.00 FR 2864    
           
    22.07.43      
    00.00 South Atlantic Course 60°.  
      FR 2917    
      ENE 2, Sea 2, 7/10, Rain showers, 1024 mb    
    04.00 FR 2924    
    08.00 FR 2697    
    12.00 FR 2693 Day's run:  123 nm  Course 270°.  
      15 22 S    
      28 02 W    
    12.10   Test dive.  
    12.41   Surfaced.  
    16.00 FR 2676    
    16.18 - 18.58   Reloaded two G7a torpedoes from the upper deck.  Fuel/ballast tanks III and VI converted for use as ballast tanks.  
           
    20.00 FR 2671    
           
    23.07.43      
    00.00 South Atlantic Course 270°.  
      FR 2586    
      E 2, Sea 2, 7/10, 1023 mb    
           
           
Sun and Moon Data 21.07.43
Sun and Moon Data 22.07.43
 
- 34 -
 
           
           
           
    continued      
    23.07.43      
    04.00 FR 2493    
    08.00 FR 2482    
    10.05   Test dive.  
    10.30   Surfaced.  
    12.00 FR 2474 Day's run:     140.0 nm  
      15° 23' S                          3.5   "    
      30° 43' W                        143.5 nm  
    16.00 FR 1685    
    20.00 FR 1593    
           
    24.7.43      
    00.00 South Atlantic    
      FR 1584    
      SSW 1, Sea 1, 6/10, 1022 mb    
    04.00 FR 1571    
    08.00 FR 1483 Main rudder motor failed, maneuvering by hand steering gear.  
    12.00 FR 1471 Day's run:  152 nm.  
      15° 19' S    
      33° 20' W    
    13.45   Main rudder motor in service again.  
    13.57 FR 1445 Crash dive! Aircraft in 80°T, flying at very high altitude, far away.  Went to depth A meters, course 90°.  
    16.00 FR 1446 Course 90°.  
    16.37   Surfaced, course 60°.  
    17.22 FR 1456 Smoke cloud at 180°, ran towards it.  
    17.50  

Mast tips in sight at 139°, a steamer steering course 70°, shortened masts, radio antenna at the funnel.  Maneuvered ahead.

 
        Enemy changed course to 25°, speed 10 knots.  
    19.25   Dived for underwater attack.  
    20.00 FR 1439    
    20.59   Double shot from tubes II and IV:  Two G7e torpedoes, target angle 30°, depth 4 meters, enemy speed 10.5 knots, range 800 meters, bow left 84° and 86°, aimed at the foremost and aft masts.  
           
           
Sun and Moon Data 23.07.43
 
- 35 -
 
           
           
           
    continued      
    24.07.43      
    21.01   Hit after 59 seconds = 910 meters at the aft hold (aft 30 meters).  Broad dark explosion plume.  Steamer stopped, life boats are lowered. Steamer drops by the stern, but doesn't sink.  
    21.15   Three strong detonations, supposing bombs dropped from aircraft, went to A meters, when nothing happened returned to periscope depth.  
        Coup de grâce necessary.  
    22.03  

Coup de grâce from tube I:  G7a torpedo, target angle 40°, depth 5 meters, range 1,000 meters.

 
        Miss due to the failure of transmission from the attack periscope to the torpedo-fire-control apparatus, which had been checked shortly before.  Because of this wrong shot angle.  
    22.09  

Coup de grâce from tube III:  G7a torpedo, target angle 40°, depth 5 meters, range 400 meters.

 
        Hit aft after 23.2 seconds = 480 meters.  Very strong detonation, debris flying through the air.  Steamer drops rapidly by stern and sinks after a minute.  
    22.10 FR 1517 Steamer sunk.  
    22.20  

Surfaced.

 
        British "PORT CHITCHIN", 6,000 GRT, carrying ore and iron from Rio to Freetown.  Shipping Company supposedly is Hogarth S.S. Co., Glasgow.  
    22.50   Ran off on course 60°.  
    23.13   Lights and lifeboats went out of sight at 250°.  
           
    25.07.43      
    00.00 South Atlantic Course 60°.  
      FR 1297    
      ESE 2, Sea 2, 8/10, 1022 mb    
    04.00 FR 1375    
    08.00 FR 1359    
    12.00 FR 1312 Day's run:     170.0 nm  
      13° 55' S                        15.0  "    
      31° 30' W                        122.0 nm  
    13.45 FK 7978 Crash dive on sighting an aircraft in 90°T, flying at very high altitude, far away.  Went to depth A meters.  
    16.00 FK 7976 Course 70°.  
           
           
Sun and Moon Data 24.07.43
Sun and Moon Data 25.07.43
 
- 36 -
 
           
           
           
    continued      
    25.07.43      
    16.00 FK 7976 Course 70°.  
    16.45   Surfaced.  
    20.00 FK 7959    
           
    26.07.43      
    00.00 South Atlantic Course 70°.  
      FR 1339    
      E 4, Sea 4, 7/10 1019 mb    
    04.00 FR 2216    
    08.00 FR 2122    
    12.00 FR 2132 Day's run:     87.5 nm  
      13° 54' S                        7.5  "    
      30° 00' W                        95.0 nm  
    16.00 FK 8878    
    20.00 FK 8889    
           
    27.07.43      
    00.00 South Atlantic Course 70°.  
      FK 8896    
      ESE 4-5, Sea 4, 5/10, 1020 mb    
    04.00 FK 8948    
    08.00 FK 8958    
    10.00   Test dive.  
    10.22   Surfaced.  
    12.00 FK 8959 Day's run:     82    nm  
      13° 22' S                        1.5   "    
      28° 20' W                         83.5 nm  
    15.18 FK 8985 Alarm!  Aircraft in 80°T, flying at very high altitude, far away.  Went to depth A meters.  
    16.00 FK 8988    
    17.37   Surfaced.  
    20.00 FR 2322    
    22.48  

Outgoing Radio Message:  From "Emmermann":

 
        1)  Sank on 24th July in FR 1517 "PORT CHITCHIN", 6,000 GRT, course 25°, with ore and iron from Rio.  
        2)  5torpedoes, 79 cbm, question supply north of DR?  
           
           
Sun and Moon Data 26.07.43
Sun and Moon Data 27.07.43
 
- 37 -
 
           
           
           
           
    28.07.43      
    00.00 South Atlantic Course 200°.  
      FR 2346    
      S 4, Sea 4, 4/10, 1022 mb    
    04.00 FR 2379    
    08.00 FR 2641    
    10.50 FR 2567 Crash dive! Aircraft in 90°T, flying at very high altitude, far away.  Went to depth A +20 meters.  
    12.00 FR 2591 Day's run:     129.5 nm  
      15° 28' S                          8.0   "    
      29° 13' W                        137.5 nm  
    13.43   Surfaced.  
    16.00 FR 2826    
    20.00 FR 2852    
    22.20 - 00.10   Repaired exhaust gas valve, over deck work.  
    23.20  

Incoming Radio Message:

 
        1)  For "Emmermann", … supply …. about 28 August in ER 30.  Leave your patrol areas in time to reach supply point with 15 cbm of fuel remaining.  Strained provisions situation, so economize.  
        2)  . . . .  
           
    29.07.43      
    00.00 South Atlantic

Course 200°.

 
      FR 2876    
      ESE 3, Sea 2-3, 7/10, 1022 mb  
    04.00 FR 5215    
    08.00 FR 5241    
    12.00 FR 5183 Day's run:     125.7 nm  
      17° 18' S                          3.8  "    
      30° 10' W                        129.5 nm  
    16.00 FR 5443 Course 200°.  
    20.00 FR 5472    
           
           
           
           
Sun and Moon Data 28.07.43
Sun and Moon Data 29.07.43
 
- 38 -
 
           
           
           
           
    30.07.43      
    00.00 South Atlantic Course 220°.  
      FR 4696    
      E 2-3, Sea 2, 7/10, Rain showers, 1023 mb    
    04.00 FR 4931    
    04.57  

Incoming Radio Message:  To "U-172" for Kommandant:  On 24 July you completed the flotilla’s second million GRT sunk.  Congratulations and further success.  Chef and Flotilla.

 
    08.00 FR 4954    
    10.12   Test dive.  
    10.40   Surfaced.  
    11.00   Course 135°.  
    12.00 FR 4897 Day's run:     158.8 nm  
      19° 16' S                          1.2 "    
      31° 51' W                        160.0 nm  
    16.00 FR 7216    
    20.00 FR 7168    
           
    31.07.43      
    00.00 South Atlantic Course 135°.  
      FR 7179    
      ENE 1, Sea 1, 9/10, Rain showers, 1023 mb    
    04.00 FQ 9636    
    08.00 FQ 9655    
    10.00   Course 100°.  
    12.00 FQ 9682 Day's run:  166.0 nm.  
      20° 43' S    
      33° 51' W    
    16.00 FQ 9695    
    20.00 FR 7477    
           
    01.08.43      
    00.00 South Atlantic Course 100°.  
      FR 7731    
      ENE 2, Sea 2, 5/10, 1021 mb    
    04.00 FR 7816    
           
           
Sun and Moon Data 30.07.43
Sun and Moon Data 31.07.43
 
- 39 -
 
           
           
           
    continued      
    01.08.43      
    04.00 FR 7816    
    08.00 FR 7837    
    12.00 FR 7941 Day's run:  136.5 nm.  
      21° 20' S    
      31° 33' W    
    12.09   Test dive.  
    12.55   Surfaced.  
    15.18  

Incoming Radio Message:  All boats in the Caribbean, Brazilian, Freetown and Guinea coasts:

 
        1)  Will first have an overview of supply options in 3 days.
        2)  Besides the instructions to operate according to fuel reserves already received:  Depart from your operations areas for supply points ordered when a provisions inventory of 3 weeks is reached.  
        3)  Inform provisions inventory on each situation report or message regarding return passage.  
    16.00 FR 7955    
    20.00 FR 7966    
           
    02.08.43      
    00.00 South Atlantic Course 100°.  
      FR 8758    
      ENE 1, Sea 1, 1/10, 1024 mb    
    04.00 FR 8769    
    08.00 FR 8881    
    10.00   Course 290°.  
    12.00 FR 8886 Day's run:     146.7 nm  
      21° 44 S                          2.3  "    
      29° 25 W                        149.0 nm  
    16.00 FR 8768    
    20.00 FR 8751    
           
    03.08.43      
    00.00 South Atlantic Course 290°.  
      FR 7936    
           
           
Sun and Moon Data 01.08.43
Sun and Moon Data 02.08.43
 
- 40 -
 
           
           
           
           
    03.08.43      
    00.00 South Atlantic    
      FR 7936 Course 290°.  
      ESE 1, Sea 0-1, 4/10, Rain showers, 1022 mb    
    04.00 FR 7922    
    08.00 FR 7594    
    10.21   Test dive.  
    10.36   Surfaced.  
    12.00 FR 7549 Day's run:     176.5 nm  
      20° 35' S                          1.5  "    
      32° 10' W                        178.0 nm  
    16.00 FR 7464    
    20.00 FR 7454    
           
    04.08.43      
    00.00 South Atlantic Course 290°.  
      FQ 9635    
      NNE 2, Sea 2, 7/10, Rain showers, 1021 mb    
    00.41   Incoming Radio Message:  1) ... 2) ... Emmermann ... return transit in direction of naval square DF 30.  Owing to the strained supply situation all boats are ordered to economize fuel and provisions.  
    01.12   Course 50°, starting return passage.  
    01.44   Outgoing Radio Message:  From Emmermann, have begun return transit, FQ 96, 63 cbm, 7 weeks provisions.  
    04.00 FQ 9399    
    08.00 FR 7175    
    12.00 FR 7136 Day's run:  177.5 nm.  
      19° 25' S    
      32° 28' W    
    16.00 FR 4888    
    20.00 FR 4867    
           
    05.08.43      
    00.00 South Atlantic Course 50°.  
      FR 4919    
      E 2, Sea 1-2, 7/10, 22 mb    
           
Sun and Moon Data 03.08.43
Sun and Moon Data 04.08.43
 
- 41 -
 
           
           
           
           
    05.08.43      
    00.00 South Atlantic    
      FR 4919 Course 50°.  
      E 2, Sea 1-2, 7/10, 1022 mb    
    04.00 FR 4695    
    08.00 FR 5447    
    10.15   Test dive.  
    10.35   Surfaced.  
    12.00 FR 5428 Day's run:     155.2 nm  
      17° 40' S                          1.3  "    
      30° 20' W                        156.5 nm  
    16.00 FR 5426    
    18.00   Incoming Radio Message:  To Maus:  After meeting with Höltring handover of first-aid material from Emmermann in naval square 64 is intended, more to follow.  
    20.00 FR 5271    
           
    06.08.43      
    00.00 South Atlantic Course 50°.  
      FR 5227    
      ESE 2-3, Sea 2, 2/10, 1021 mb  
    04.00 FR 5235    
    08.00 FR 2979    
    08.10   Incoming Radio Message:   "Höltring", "Maus", "Emmermann" are to steer for FK 3955.   "Höltring" report by Short Signal if completing the return passage seems hopeful.  
    12.00 FR 2959 Day's run:  138 nm.  
      16° 07' S    
      28° 32' W    
    16.00 FR 2939    
    20.00 FR 3439 Fuel/ballast tank IV converted for use as a ballast tank.  
           
    07.08.43      
    00.00 South Atlantic

Course 50°.

 
      FR 3459    
      ENE 2, Sea 1-2, 5/10, 1020 mb  
           
Sun and Moon Data 05.08.43
Sun and Moon Data 06.08.43
 
- 42 -
 
           
           
           
    continued      
    07.08.43      
    04.00 FR 3463    
    08.00 FR 3279    
    09.46   Test dive.  
    10.11   Surfaced.  
    12.00 South Atlantic    
      FR 3285 Day's run:     154.8 nm  
      14° 35' S                          1.2  "    
      26° 32' W                        156.0 nm  
    16.00 FR 3347

Incoming Radio Message:  Officer-Only:

 
       

If it is return transit is hopeless for "Höltring", U-604 is to be sunk.  For this following orders:

 
       

1)  "Höltring" and "Maus" are to meeting in FK 3955.  Then are to proceed together to FL 1255.  There "Höltring" is to hand over all fuel to Maus, as well as half of the provisions.  As much as space permits, important equipment is also to be handed over. 

 
       

2)  Tonight Emmermann is to report by short signal arrival in the latter square.  There the remaining provisions are to be taken over and the crew of "Höltring" is to be shared equally between the two boats.  Subsequently U-604 is to be sunk.  After scuttling "Maus" is to report 'Yes' and both boats are to return to the base independently.

 
        3)  Further distribution of "Höltring's" crew on other boats is intended.  All positions naval squares.  
    20.00 FR 3319    
    20.06   Incoming Radio Message:  1) … 2) All boats on return passage which are short of fuel are to steer for DF 62.  In the area of 400 nm around this square all boats are to maintain radio silence except for messages of tactical importance.  
    08.08.43      
    00.00 South Atlantic

Course 50°.

 
      FK 9999 During the night several attempts to send short signal on 36-meters as well as on America 2 Circuit, was not heard.  
      E 1, Sea 1, 3/10, 1020 mb  
    04.00 FL 7748    
           
           
           
Sun and Moon Data 07.08.43
 
- 43 -
 
           
           
           
    continued      
    08.08.43      
    08.00 FL 7728    
    12.00 FL 7469 Day's run:  172 nm.   Course 10°.  
      12° 36' S    
      24° 30' W    
    16.00 FL 7514    
    19.27   Incoming Radio Message: … Emmermann report arrival at meeting point with "Höltring".  
    20.00 FL 7247    
    22.18   Outgoing Radio Message on 36-meters:  Arrival at meeting point on 10th August in the afternoon.  From    "Emmermann".  
    23.55   Confirmation of radio message.  
    09.08.43      
    00.00 South Atlantic Course 10°.  
      FL 7219    
      ENE 2-3, Sea 2-3, 3/10, 1020 mb  
    01.18   "Höltring" reports air activity in FK 39 and suggests a new meeting in FD 9555.  
    01.31   To Höltring, Maus and Emmermann:  New meeting as suggested by Höltring on 11th August at 10.00 hours in FD 9555.  
    04.00 FL 4885 Steering course 30° for new meeting point.  
    08.00 FL 4829    
    09.40   Test dive.  
    10.00   Surfaced.  
    12.00 FL 4597 Day's run:     166 nm  
      10° 02' S                          1 "    
      23° 48' W                        167 nm  
    16.00 FL 4562    
    20.00 FL 4378    
           
    10.08.43      
    00.00 South Atlantic Course 30°.  
      FL 4355    
      ESE 3-4, Sea 3, 7/10, Rain showers, 1016 mb    
           
           
           
Sun and Moon Data 08.08.43
Sun and Moon Data 09.08.43
 
- 44 -
 
           
           
           
           
    10.08.43      
    04.00 FL 4337    
    08.00 FL 1968    
    12.00 FL 2714 Day's run:  162 nm  Course 25°.  
      07° 34' S    
      22° 30' W    
    16.00 FL 2457    
    20.00 FL 2429    
           
    11.08.43      
    00.00 South Atlantic Course 25°.  
      FL 2191    
      ESE 2-3, Sea 2-3, 7/10, Rain showers, 1016 mb    
    04.00 FL 2135    
    08.00 FD 9871    
    09.49   Test dive.  
    10.08   Surfaced.  
    10.25   Course 23°.  
    12.00 FD 9819 Day's run:     168 nm  
      05° 03' S                          1  "    
      21° 31' W                        169 nm  
    16.00 FD 9581    
    17.44 FD 9555 Boat arrived at meeting point, course 290°.  
    18.10 FD 9552 Two U-boats in 280°T.  Recognition signals exchanged, "U-604" and "U-185"!  
    18.40  

Established line connection with "U-604", provisions and equipment taken over.  In addition I can take over the remaining 9 cbm of fuel.  Hose connection established.  Transfer of equipment to boat "Maus" was already concluded.

 
        "Höltring" suspects a searching group in the vicinity, yesterday he heard ASDIC impulses.  
    20.00 FD 9551    
           
           
           
Sun and Moon Data 10.08.43
Sun and Moon Data 11.08.43
 
- 45 -
 
           
           
           
    continued      
    11.08.43      
    20.04 FD 9551

Aircraft at 210°, diving from high altitude out of the haze, flying at low altitude, flying height 40 - 50 meters, approaching the two connected boats from abeam to port.

 
        Six aircraft bombs, four to port, one between the boats and one starboard of "U-604".  Opened fire with 20 mm and machine guns.  
        Defended with all machine guns, hits possible.  
       

Very strong shocks, both boats disappear in the fountains of water.  Bomb impacts at 15 and 20 meters abeam on both sides of the boat.  Diesel engines full speed, lines and hose connections cut.

 
       

Matr.Ob.Gefr. Schiemann killed by heart and neck shots while removing the muzzle plug of the 105 mm deck gun on the forecastle.

 
    20.06  

Second approach-run steep from ahead to port.  Boat is increasing speed.  Altitude 20 meters, two depth charges, one of them detonates 5 meters away behind the stern, at a depth of about 20 meters.  Strafing fire.  Boat makes a leap forward.

 
       

Matr.Ob.Gefr. Wagner seriously wounded by a shot in the chest and a grazing shot in the arm, Matr.Ob.Gefr. Meiβner slightly wounded at the eye by splinters.

 
       

Several breakdowns.  Rudder jammed to port at 10°.

 
       

All boats are zigzagging at full speed one around the other giving protection to each other.

 
       

In doing so, I'm continuously in ramming position with "U-185", which has not the slightest notion of my rudder failure.

 
        Both machine guns out of action.  The Chief Engineer reports the boat ready for diving.  
    20.15  

Crash dived when the aircraft apparently has no bombs left and is shadowing us, given the condition of the boat I can't give assistance to "Höltring".

 
       

Went to A +20 meters.

 
        Damages repaired.  Gyrocompass is still out of action.  Magnetic compass temporally out of action.  Several battery cells cracked.  
    23.00   Course to the north by magnetic compass.  
           
           
Sun and Moon Data 11.08.43
 
- 46 -
 
           
           
           
           
    12.08.43      
    00.00 South Atlantic    
      FD 9527    
    00.54  

Surfaced, damages repaired except the gyro-compass.  Course 0°.

 
    02.05   Outgoing Radio Message:  From "Emmermann":  While refueling surprised by a land-based aircraft, depth-charges and gunfire, Matr.Ob.Gefr. Schiemann was killed and one man badly wounded.  Withdrawing to the north.  Slight damage. Previously there was no air activity for several days.  Only part of the equipment from boat "Höltring" taken aboard. Suspect that there is a search group in the vicinity.  
    02.49   "Maus" reports that the aircraft was shot down and Höltring 's crew taken over.  
    02.52   Incoming Radio Message:  "Emmermann" by Officer-Only and disguised square.  Requested suggestion for meeting with Maus more northerly on the 12th in the evening.  Take over half of "Höltring's" crew as soon as possible.  
    03.46  

Outgoing Radio Message:  Suggestion for meeting will follow, at the time proceeding to the north by magnetic compass.  -From Emmermann.-

 
        Accurate fix needed.  
    04.00 FD 9273    
    08.00 FD 9136    
    12.00 FD 6787 Day's run:     143 nm  
      02° 58' S                        11  "    
      22° 15' W                         154 nm  
    16.00 FD 6744    
    20.00 FD 5931    
    20.18   Outgoing Radio Message on 36-meters:  Officer-Only:  From "Emmermann" to "Maus":  New meeting suggested in the evening of 13 August in FD 2763.  Breakdown of gyro-compass, 41 cbm.  
           
    13.08.43      
    00.00 South Atlantic

Course 345°.

 
      FD 5674    
      ESE 3, Sea 2-3, 5/10, Rain showers, 1016 mb    
    03.03   Content of the Radio Messages confirmed.  
           
           
Sun and Moon Data 12.08.43
 
- 47 -
 
           
           
           
    continued      
    13.08.43      
    04.00 FD 5562    
    08.00 FD 5286    
    12.00 FD 5227 Day's run:  181 nm.  
      00° 32' S    
      24° 02' W    
    16.00 FD 2847    
    20.00 FD 2842    
    21.15 FD 2763 Boat lay stopped at meeting point.  
           
    14.08.43      
    00.00 South Atlantic Stopped.  
      FD 2763    
      SE 2, Sea 2, 6/10, 1017 mb    
    04.00 FD 2763    
    08.00 FD 2841    
    11.13  

"U-185" in sight in 350°T.  Recognition Signals exchanged.  As there is no rubber boat available, half of "Höltring's" crew reach our boat by swimming.

 
        2 officers, 2 Ob. Feldw, five Unteroffz. and 13 men of U-604's crew taken on board.  
    12.00 FD 2761 The physician had decided to keep the seriously wounded man aboard.  
      00° 14' N  
      24° 31' W

Day's run:  103.5 nm.

 
    12.47   Proceeding on course 340°.  
    16.00 FD 2491    
    20.00 FD 2425    
    20.05   Test dive.  
    20.30   Surfaced.  
    22.11   "U-185" out of sight.  
           
    15.08.43      
    00.00 Central Atlantic

Course 340°.

 
      FD 2173    
      SSE 1-2, Sea 1, 4/10, 1020 mb  
           
           
Sun and Moon Data 13.08.43
Sun and Moon Data 14.08.43
 
- 48 -
 
           
           
           
    continued      
    15.08.43      
    04.00 FD 2114    
    08.00 ES 7968    
    09.34 ES 7962 U-185 at 235° in sight.  
    12.00 ES 7923 Day's run:     183 nm  
      03° 16' N                          2  "    
      25° 36' W                         185 nm  
    12.32   "U-185" out of sight at 240°.  
    16.00 ES 7657    
    20.00 ES 7613    
           
    16.08.43      
    00.00 Central Atlantic

Course 340°.

 
      ES 7344    
      SE 2, Sea 1-2, 7/10, 1019 mb    
    04.00 ES 7233    
    08.00 ES 4864    
      NW 2, Sea 1-2, overcast, 1020 mb    
    10.21   Incoming Radio Message:  1) … 2) "Emmermann" signal "Yes" as soon as part of "Höltring's" crew has been taken over.  
    12.00 ES 4588 Day's run 180.5 nm.  
      06° 00' N    
      26° 36' W    
    16.00 ES 4554    
    20.00 ES 4278    
    22.57   Sent Short Signal on 24-meters:  I accomplished the task, my position is ES 10.   -"U-172"-  
    23.47   Confirmation of short signal.  
           
    17.08.43      
    00.00 Central Atlantic

Course 335°.

 
      ES 4163    
      SSW 1, Sea 1, 7/10, Rain showers, 1020 mb    
           
           
           
Sun and Moon Data 15.08.43
Sun and Moon Data 16.08.43
 
- 49 -
 
           
           
           
    continued      
    17.08.43      
    04.00 ES 1797    
    08.00 ES 1753 Receiver part of the "Metox" receiver placed under lock by the Kommandant.  
    09.24   Test dive.  
    09.50   Surfaced.  
    12.00 ES 1479 Day's run:     152.8 nm  
      08° 46' N                          1.2  "    
      27° 44' W                         154.0 nm  
    16.00 ES 1418    
    20.00 ES 1418  (Corrected position after fix)    
           
    18.08.43      
    00.00 Central Atlantic

Course 335°.

 
      ER 3396    
      NW 2, Sea 1-2, 8/10, Rain showers, 1023 mb    
    04.00 ER 3361    
    08.00 EH 9989    
    12.00 EH 9942 Day's run:  166 nm.  
      10° 59' N    
      28° 42' W    
    16.00 EH 9911    
    20.00 EH 9565    
           
    19.08.43      
    00.00 Central Atlantic Course 335°.  
      EH 9523    
      N 2-3, Sea 2, 5/10, 1022 mb    
    04.00 EH 9257    
    06.00   Incoming Radio Message: 1) … 2) … 3) … "Emmermann" make for supply meeting point "Kuppisch" in DF 8635 for supply.  
    08.00 EH 9215

The condition of the seriously wounded soldier improved substantially, no longer danger to life.  Mtr.Gefr. Christiani is seriously ill, temperature of 40.5°C, probably pneumonia.

 
    09.42   Test dive.  
    10.51   Surfaced.  
    12.00 EH 67    
           
           
Sun and Moon Data 17.08.43
Sun and Moon Data 18.08.43
Sun and Moon Data 19.08.43
 
- 50 -
 
           
           
           
    continued      
    19.08.43      
    09.42   Test dive.  
    10.51   Surfaced.  
    12.00 EH 6796 Day's run:     168.5 nm  
      13° 24' N                          2.5  "    
      29° 49' W                         171.0 nm  
    16.00 EH 6737    
    19.23   Incoming Radio Message:  All returning boats are to proceed through the Biscay on the "Piening" route until further notice.  
    20.00 EH 6473    
           
    20.08.43      
    00.00 Central Atlantic    
      EH 5639 Course 335°.  
      NNE 2, Sea 2, 1/10, 1022 mb    
    04.00 EH 5394    
    08.00 EH 5352    
    12.00 EH 2979 Day's run:  179 nm.  
      16° 00' N    
      31° 18' W    
    16.00 EH 2941    
    20.00 EH 2598    
           
    21.08.43      
    00.00 Central Atlantic Course 335°.  
      EH 2519    
      NNE 1-2, Sea 0, 3/10, 1023 mb    
    04.00 EH 2274    
    08.00 EH 2138    
    09.53   Test dive.  
    10.20   Surfaced.  
    12.00 DS 8786 Day's run:     170.0 nm  
      18° 43' N                          1.5  "    
      32° 51' W                         171.5 nm  
           
           
Sun and Moon Data 19.08.43
Sun and Moon Data 20.08.43
 
- 51 -
 
           
           
           
    continued      
    21.08.43      
    16.00 DS 8751    
    20.00 DS 7698    
    20.01   Incoming Radio Message:  To Emmermann, Maus if reaching "Kuppisch 's" supply naval square is impossible even after mutual fuel balancing, "Maus" suggest new meeting with "Kuppisch" as far north as fuel reserves permit.  Take up position there to await Kuppisch who'll arrive after carrying out replenishment already ordered.  
    22.25 - 23.00  

Over deck work.

 
        B.d.U. seems to assume that the boats are proceeding together, although independent transit had been ordered.  
    22.08.43      
    00.00 Central Atlantic Course 340°.  
      DS 7656    
      ENE 2, Sea 2, 7/10, 1025 mb    
    04.00 DS 7987    
    08.00 DS 7345    
    12.00 DS 7232 Day's run:  175.5 nm.  
      21° 16' N    
      34° 25' W    
    16.00 DS 4867    
    20.00 DS 4575    
           
    23.08.43      
    00.00 Central Atlantic Course 340°.  
      DS 4517    
      ENE 3, Sea 3, 9/10, 1026 mb    
    04.00 DS 4195    
    04.45 DS 4153 Shadow in sight at 90°, turned towards it, recognized as a type IX U-boat.  Recognition signal only acknowledged only after the second time by turning away. Subsequently recognition signals exchanged.  Proceeded on my way.  Because the boat was crossing our bow, I had to evade.  According to Morse code could be "Maus".  
    06.08   Lost sight at 340°.  
           
           
Sun and Moon Data 21.08.43
Sun and Moon Data 22.08.43
 
- 52 -
 
           
           
           
    continued      
    23.08.43      
    08.00 DS 4122    
    09.49   Test dive.  
    10.07   Surfaced.  
    12.00 DS 4121 Day's run:     171     nm  
      23° 59' N                          1.5   "    
      35° 44' W                         172.5 nm  
    16.00 DS 1745    
    20.00 DR 3932    
    21.33 DR 3695 Crash dive!   Aircraft in 280°T on easterly course, very far away, flying at high altitude, presumably land-based aircraft, went to depth A meters.  
    23.23   Surfaced.  
           
    24.08.43      
    00.00 Central Atlantic Course 340°.  
      DR 3656    
      NE 1, Sea 1-2, 7/10, 1030 mb    
    04.00 DR 3387    
    08.00 DR 3345    
    12.00 DR 3231 Day's run:     161 nm  
      26° 41' N                          4   "    
      37° 12' W                         165 nm  
    16.00 DF 9754    
    16.13 DF 9746 Crash dive! Aircraft in 270°T, flying at high altitude, far away, on northeasterly course.  Proceeding submerged at depth A -30 meters.  
    17.00   Detonation heard, presumably a torpedo, or a bomb dropped from an aircraft, very far away.  Possibly "Maus"?  
    20.00 DF 9743    
    23.06   Surfaced.  
           
    25.08.43      
    00.00 Central Atlantic Course 340°.  
      DF 9716    
      ENE 2, Sea 2, 7/10, 1019 mb    
           
           
Sun and Moon Data 23.08.43
Sun and Moon Data 24.08.43
 
- 53 -
 
           
           
           
           
    25.08.43      
    00.23   Incoming Radio Message:  To "Kuppisch":  Moreover "Emmermann" and "Maus" which are arriving about 26th August are to be replenished for economical return passage.  The last two boats to be supplied so far are to wait in order to distribute between them part of the "Höltring" crew from "Emmermann" and "Maus".  Report execution when task was carried out.  Further instructions to follow.  
    03.00   Course 315°.  
    04.00 DF 9784    
    08.00 DF 9441    
    09.32 DF 8635 Two shadows in sight at 320°, "U-508" (Staats) and "U-847" (Kuppisch).  Recognition signals exchanged.  Hose connection with boat "Kuppisch" established.  
    11.00  

Starting replenishment.

 
        No men handed over to Staats.  Due to sickness (dysentery) and steering by magnetic compass, as well as intensified bridge watch, the reinforcement of the crew is welcome.  Provisions are enough for all men.  
    12.00 DF 8632

"Staats" is still waiting for "Maus".

 
      28° 27.5' N Day's run:     124 nm.  
      38° 09.0' W    
    15.25  

Refueling concluded, hose connection disconnected, 35 cbm of fuel taken over.  Continued transit on course 45°.

 
    15.34      
    16.00 DF 8399 "U-508" out of sight.  
    16.15   "U-847" out of sight.  
    20.00 DF 9146    
           
    26.08.43      
    00.00 Central Atlantic Course 45°.  
      DF 9126    
      E 1, Sea 1, 8/10, 1023 mb    
    04.00 DF 6847    
    08.00 DF 6819    
           
           
           
Sun and Moon Data 25.08.43
 
- 54 -
 
           
           
           
    continued      
    26.08.43      
    09.50   Test dive.  
    10.23   Surfaced.  
    12.00 DF 6589 Day's run:     156.7 nm  
      30° 20.5' N                          1.8  "    
      35° 57.5' W                         158.5 nm  
    16.00 DF 6586    
    20.00 DF 6618 Course 50°.  
           
    27.08.43      
    00.00 Central Atlantic Course 50°.  
      DF 6383    
      ENE 1, Sea 1, 6/10, 1023 mb    
    04.00 DF 6363    
    08.00 DG 4121    
    12.00 DG 1783 Day's run:  176.5 nm.  
      32° 21' N    
      33° 32' W    
    16.00 DG 1841    
    20.00 DG 1587    
           
    28.08.43      
    00.00 Central Atlantic Course 50°.  
      DG 1568    
      E 1-2, Sea 1-2, 4/10, 1025 mb    
    04.00 DG 1616    
    08.00 DG 1386    
    09.05   Test dive.  
    09.26   Surfaced.  
    09.30   Course 65°.  My intention is to pass east of St. Maria.  
    12.00 DG 2147 Day's run:     174.2 nm  
      34° 15' N                          1.8  "    
      30° 39' W                         176.0 nm  
    14.04      
           
           
           
Sun and Moon Data 26.08.43
Sun and Moon Data 27.08.43
Sun and Moon Data 28.08.43
 
- 55 -
 
           
           
           
    continued      
    28.08.43      
    14.04   Incoming Radio Message:  Officer-Only:  In the area CG 20, BF 74-79 at the moment strong anti-submarine activity.  It appears likely the "Piening" route is known to the enemy.  Anti-submarine groups are steering in very broad line abreast.  Boats which are on the "Piening" route are to be especially careful.  Proceed as close to the coast as possible.  The other returning boats are to by-pass the mentioned area.  
    14.50   Course 42°.  My intention is to pass west of Sao Miguel.  
    16.00 DG 2152    
    20.00 CE 8898    
           
    29.08.43      
    00.00 Central Atlantic

Course 43°.

 
      CE 8928    
      E 1, Sea 0-1, 5/10, 1024 mb    
    04.00 CE 9447    
    08.00 CE 9186    
    09.00   Course 35°.  
    12.00 CE 9217 Day's run:    254.5 nm.  
      37° 17' N    
      27° 02' W    
    16.00 CE 6858    
    20.00 CE 6595 Course 50°.  
           
    30.08.43      
    00.00 Central Atlantic Course 50°.  
      Northeast of the Azores    
      CE 6624    
      NE 1, Sea calm, 2/10, 1028 mb    
    02.12   "Staats" reports supply concluded.   "Maus" didn't arrive, Kuppisch presumably bombed.  
    04.00 CF 4247    
    08.00 CF 4231    
    08.53   Dived, proceeded submerged at depth A -30 meters.  
    12.00 CF 1895 Day's run:     138.5 nm  
                                 7.5  "    
           
           
Sun and Moon Data 29.08.43
Sun and Moon Data 30.08.43
 
- 56 -
 
           
           
           
    continued      
    30.08.43      
    12.00 CF 1895 Day's run:     138.5 nm  
      40° 19' N                          7.5  "    
      23° 43' W                         146.0 nm  
    16.00 CF 1896    
    20.00 CF 1947    
    22.29   Surfaced, proceeding on surface charging transit.  
           
    31.08.43      
    00.00 Central Atlantic Course 50°.  
      Northeast of the Azores    
      CF 1951    
      NW 1, Sea 1, 9/10, 1021 mb    
    00.18   Incoming Radio Message:  1) … on 31st August at 8.00 hours … "Emmermann" change to Ireland Circuit. 2) …  
    04.00 CF 2474    
    08.00 CF 2435    
    08.03   Dived, proceeded submerged at depth A -30 meters.  Switched to Ireland Circuit.  
    12.00 CF 2433 Day's run:     167.5 nm  
      41° 57' N                        28.5  "    
      21° 12' W                         196.0 nm  
    16.00 CF 2277    
    18.35   Incoming Radio Message:  According to aircraft and radar observations the enemy anti-submarine forces apparently were expelled from the "Piening" route.  Route is again free for returning boats.  
    19.45   Course 90° for "Piening" route.  
    20.00 CF 2275    
    22.25   Surfaced, proceeding on surface charging transit.  
    22.58  

Incoming Radio Message:  Return harbor ... U-172 … is Lorient.          From F.d.U. West

 
    01.09.43      
    00.00 Central Atlantic Course 90°.  
      West of Vigo    
      CF 2294    
      NNE 2, Sea 2, 9/10, 1026 mb    
           
           
Sun and Moon Data 30.08.43
Sun and Moon Data 31.08.43
 
- 57 -
 
           
           
           
           
    01.09.43      
    04.00 CF 2395    
    07.51   Dived, proceeded submerged at depth A -30 meters.  
    08.00 CF 3196    
    12.00 CF 3274 Day's run:     127 nm  
      42° 08' N                        32  "    
      17° 23' W                         159 nm  
    16.00 CF 3276    
    20.00 CF 3284    
    22.27   Surfaced, charging transit.  
           
    02.09.43      
    00.00 Atlantic Course 90°.  
      West of Vigo    
      CF 3295    
      NW 2-3, Sea 2, 5/10, 20 mb    
    04.00 CF 3396    
    06.15   Dived.  Proceeded submerged at depth A -20 meters.  
    08.00 CF 1194    
    12.00 CF 1195 Day's run:     120 nm  
      42° 11' N                        31  "    
      14° 01' W                         151 nm  
    16.00 CG 1274    
    20.00 CG 1275    
    22.25   Surfaced, charging transit.  
           
    03.09.43      
    00.00 Atlantic Course 90°.  
      West of Vigo    
      CG 1294    
      NNW 1, Sea 1, 1/10, 1023 mb  
    04.00 CG 1394    
    05.37   Dived, proceeded submerged at depth A -20 meters.  
    08.00 CG 2176    
    12.00 CG 2184 Day's run:     102 nm  
      42° 11' N                        32  "    
      10° 59' W                         134 nm  
           
           
Sun and Moon Data 01.09.43
Sun and Moon Data 02.09.43
Sun and Moon Data 03.09.43
 
- 58 -
 
           
           
           
    continued      
    03.09.43      
    12.00 CG 2184 Day's run:     102 nm  
      42° 11' N                        32  "    
      10° 59' W                         134 nm  
    16.00 CG 2186    
    20.00 CG 2194    
    22.30   Surfaced, charging transit.  Course 90°.  
           
    04.09.43      
    00.00 Atlantic Course 90°.  
      Southwest Cape Finisterre    
      CG 2275    
      NNE 0-1, Sea 1, 5/10, 1022 mb  
    02.07   Coastal light in sight.  Continue proceeding by bearings from coast stations.  
    03.09   Course 11°.  On 100-meter line.  
    04.00 CG 2265    
    04.41   Course 0°.  
    05.20   Course 341°.  
    06.30   Dived, proceeded submerged at depth A -50 meters.  
    08.00 BF 7897    
    11.20   Course 32°.  
    12.00 BF 7894 Day's run:     105 nm  
      43° 03' N                        32  "    
      09° 23' W                         137 nm  
    16.00 BF 7892 Course 18°.  
    18.00         "     52°.  
    20.00 BF 7869    
    22.08   Surfaced charging transit.  Course 77°.  
           
    05.09.43      
    00.00 Biscay    
      BF 7951    
      E 1, Sea 1, 9/10, 24 mb    
    00.26   Course 32°.  
    01.00   Course 52°.  
    02.07   Course 69°.  
           
           
Sun and Moon Data 04.09.43
Sun and Moon Data 05.09.43
 
- 59 -
 
           
           
           
    continued      
    05.09.43      
    01.00   Course 52°.  
    02.07          "    69°.  
    02.51          "    93°.  
    03.59          "    111°.  
    04.00 BF 8479    
    06.10   Course 85°.  
    06.15   Dived, proceeded submerged at depth A -40 meters.  
    08.00 BF 8736    
    12.00 BF 8814 Day's run:     121.5 nm  
      43° 40' N                        31.5   "    
      06° 35' W                         153   nm  
    16.00 BF 8816 Fishing boat traffic along the 200-meter line.  
    20.00 BF 8824    
    21.43   Surfaced charging transit.  
    22.34   Course 15° for point "Love".  
    22.38   Cape Penas out of sight.  
           
    06.09.43      
    00.00 Biscay Course 15°.  
      BF 8592    
      N 2-3, Sea 3, overcast, misty, 1018 mb    
    03.16  

Short signal on 36-meters:  I'm 30 hours off reception harbor.      U-172

 
    03.48   Confirmation of short signal.  
    04.00 BF 8371    
    04.08   Dived, proceeded submerged at depth A -30 meters.  
    08.00 BF 8345    
    12.00 BF 8342 Day's run:     90 nm  
      45° 15'    N                      37  "    
      05° 17.5' W                       127 nm  
    14.23   Incoming Radio Message:  Emmermann switch to Coastal Circuit immediately.  
    16.00 BF 8318 Incoming Radio Message:  Escort for U-172 positioned at point Lantern at 13.00 hours on 7 September.  
    20.00 BF 8313    
    21.40   Surfaced charging transit.  
           
Sun and Moon Data 06.09.43
Sun and Moon Data 07.09.43
 
- 60 -
 
           
           
           
           
    07.09.43      
    00.00 Biscay Course 15°.  
      BF 5846    
      ENE 1-2, Sea 1, long swells, 8/10, 1020 mb    
    02.00   Course 40°.  On harbor approach route.  
    02.30   Dived, proceeded submerged at depth A -45 meters.  
    04.00 BF 5583    
    08.00 BF 5564    
    09.00   Surfaced, on harbor approach route, course 40°.  
    12.00   Ile de Croix in sight.  
    12.30   Taken over by escort.  
    15.00 Lorient Tied up at Skorff-shelter.  
                                
                                         Kapitänleutnant and Kmdt.  
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
Sun and Moon Data 07.09.43


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