U-507 - 2nd War Patrol

Translation by Jerry Mason with the help of Ken Dunn

Departed
Date
Arrived
Date
Days at Sea
Lorient
4 April 1942
Lorient
4 June 1942
62

 

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
30 Apr 42
18.10 - 19.10
25°15'N, 79°45'W
FEDERAL
2,881
American
 
4 May 42
17.42
24°39'N, 83°51'W
NORLINDO
2,686
American
 
5 May 42
01.32
25°15'N, 84°03'W
MUNGER T. BALL
5,104
American
 
5 May 42
04.24
23°39'N, 83°57'W
JOSEPH M. CUDAHY
6,950
American
 
6 May 42
18.53 - 19.45
28°45'N, 88°22'W
ALCOA PURITAN
6,759
American
 
7 May 42
11.10 - 11.21
28°27'N, 90°14'W
ONTARIO
3,099
Honduran
8 May 42
05.35
28°09'N, 89°50'W
TORNY
2,424
Norwegian
12 May 42
22.05 - 22.07
28°51'N, 89°26'W
VIRGINIA
10,731
American
 
13 May 42
13.38 - 13.41
28°39'N, 91°02'W
GULFPRINCE (damaged)
6,561
American
 
16 May 42
early morning
26°39'N, 89°09'W
AMAPALA
4,148
Honduran
 
     
 Total = 51,343
   
Note:  The positions in the table above and in the Google Earth patrol summary are derived from the KTB and in many cases do not match those set forth in authoritative references such as Jürgen Rohwer, Axis Submarine Successes of World War Two or the Uboat.net website.  The goal here is to present the picture relative to the U-boat and not the absolute position that the ship was attacked or sank.


 
                                                                                         
 
           
           
           
           
                  
           
           
           
           
                         K  r  i  e  g  s  t  a  g  e  b  u  c  h  
                      =========================  
                          of Unterseebootes "U-507"  
           
                                    2nd War Patrol.  
           
            Beginning:  26.3.1942  
            Ending:        4.6.1942  
           
                  
                                        Time:           D.G.Z.  
                                        All Naval Squares.  
                                            
           
                           Kommandant:        Korv.Kapt. Schacht.  
           
           
                           Distribution:     2 x O.K.M.  
            1 x B.d.U.  
            1 x 2.A.d.U-Boote  
            1 x 2.U.-Flottille  
           
           
           
           
           
           
           
        © U-boat Archive 2014  - all rights reserved  
Click the flag to view the above page from the original German KTB
 
- 1 -
 
           
           
           
           
    26.03.42 Lorient    
    11.30   Crew muster by B.d.U.  
    12.30   Cast off from the Arsenal.  
    13.00   Made Fast Cernevel slip  
                                                          
    27.03.42 Lorient Boat to Cernevel Bunker for various work, crew in quarantine due to suspicion of Diphtheria.  
                                                          
    30.03.42 Lorient    
    18.00   Cast off Cernevel slip  
    20.00   Made fast Berth B 5 Arsenal.  
                                                          
    31.03.42 Lorient    
    from 08.00   Fuel oil transfer, dummy torpedo loading and firing.  
    12.00   Doctor's examination of the crew, no further Diphtheria suspected.  
    16.30   Cast off for diesel test and diving test.  
    19.45   Made fast Berth B 5 Arsenal.  
                                                          
    01.04.42 Lorient    
    from 08.00   Loading of torpedoes and artillery ammunition.  
    16.10   Cast off for degaussing and diesel testing.  
    19.15   Made fast Arsenal Berth A 3.  
                                                          
           
           
 
 
- 2 -
 
           
           
           
           
    02.04.42 Lorient    
    from 08.00   Loading of dry provisions.  
                                                          
    03.04.42 Lorient    
    09.30   Shifting from Berth A 3 to A 4.  
        Afterwards completion of the boat's outfitting.  
    17.10   Cast off.  
    17.32 - 18.20   Final trim test.  Bushing of the radio direction finder leaks heavily.  
    18.30 - 19.17   Calibration of the radio direction finder.  
    20.15   Made fast Arsenal Berth A 2.  
                                                          
    04.04.42 Lorient    
    from 08.00   Loading of fresh provisions.  
    19.56   Cast off for war patrol together with U-125.  
    20.00 SW 6, heavy rain squalls, Vis. bad    
    20.20 - 20.34   Dived in the harbor, bushing of the radio direction finder is now tight.  
    20.34   Surfaced, left the harbor without escort, because a boat of the 40th MS Flottille is not in position, outside however the Sperrbrecher is waiting for both U-boats.  
    21.00   Taken in convoy by Sperrbrecher at L 7.  
    22.15   Released from convoy at L 2.  
    24.00 SW 6, Sea 5-6, rain, Vis. 2 nm, marine phosphorescence    
                                                          
    05.04.42 Bay of Biscay Proceeded on Route Rosabella, Cedernland, Tannenwald.  
    04.00 WSW 6, Sea 5-6, changing cloudiness and Vis., few rain squalls, marine phosphorescence The boat works heavily in the sea, and takes over much water.  I only get ahead slowly.  
    06.50   Dived to proceed submerged.  
    12.00 BF 6478 Day's run:  87.5 nm, of which 74.0, 13.5 nm.  
    16.00 BF 5599    
    20.00 BF 5831    
    22.00   Surfaced.  
    24.00 BF 5824    
      SSW 3-4, confused Sea 4 from the SSW and WSW-Swell 3, few clouds                                                   
           
           
           
Sun and Moon Data 04.04.42
Sun and Moon Data 05.04.42
 
- 3 -
 
           
           
           
           
    06.04.42 Bay of Biscay On the Great Circle to assigned square in accordance with Outbound Orders.  
    01.45   Incoming Radio Message 1650/5  
        Aircraft report:  15.20 hours in square BF 8699, 3 enemy T-boats and 4 barges course 310°, about 15 knots.  Ju 88 and He 111 were tasked at night by parachute flares.  
        To reach the convoy I must make a minimum of 15 knots through the water.  This can not be achieved in the prevailing Swells.  
    04.00 BF 5739    
      SW 4, Sea and Swell 4-5, scattered clouds, bright moonshine, marine phosphorescence    
    07.10   Dived to proceed submerged.  
    08.00 BF 5742    
    12.00 BF 5744 Day's run:      117 nm, of which       72 nm,    45 nm  
        Total of:      204.5  " ,        "       146.0  "  , 58.5  ".  
    16.00 BF 4966    
    20.00 BF 4964    
    22.09   Surfaced.  
    24.00 BF 4955    
                                                          
    07.04.42 Bay of Biscay    
    04.00 BF 4946 Can hardly make progress against the sea and Swell.  The boat takes over much water.  However remained on the surface to charge the battery.  
      W 4, Sea 5-6, heavy Swell, Vis. good, isolated rain showers  
    08.00 BF 4945    
      W 4, Sea 5-6, Swell, Vis. good, isolated rain showers    
    08.40   Dived to proceed submerged.  In so doing dived to depth A +40 meters.  Port shaft bearing leaks heavily from depth A, however is tight at lesser depth.  
    12.00 BF 4869 Day's run:      72 nm, of which       27 nm,     45 nm  
        Total of:     276.5  " ,        "      173.0  "  , 103.5  ".  
    16.00 BF 4867    
    20.00 BF 4883    
    21.55   Surfaced.  It has abated somewhat, turned off 20°, to make more progress.  
    24.00 BF 4876    
      SW 2-3, Sea 3, NW-Swell, few clouds, Vis. good                                                   
         
           
Sun and Moon Data 06.04.42
Sun and Moon Data 07.04.42
 
- 4 -
 
           
           
           
           
    08.04.42 Bay of Biscay    
    04.00 BF 7212    
      W 3-4, Sea 4, NW-Swell, few clouds, Vis. good    
    08.00 BF 7134    
      W 2, Sea 3, long NW-Swell, few clouds    
    09.12 - 10.32   Test dive and crash dive exercises.  
    12.00 BF 7143 Day's run:    116 nm, of which       81 nm,     35 nm  
      SW 4, Sea 2-3, heavy W-Swell, overcast, scattered rain, Vis. good Total of:     392.5  " ,        "      254.0  "  , 138.5  "  .  
    16.00 BF 7146    
      SW 4, Sea 4-5, W-Swell 4, few clouds, Vis. good    
    19.45 BE 9392 It freshens again.  The boat holds in place, green seas run on the bridge.  Dived, to make progress.  
      SW 6, Sea 6, W-Swell 5, overcast, Vis. changing, rain showers  
    19.50   Incoming Radio Message 1847/8  To Schacht and Folkers:  
        1.)  Head for square DD 85.  
        2.)  Reminded of passing report.  
    24.00 BE 9386 Surfaced.  
      SW 5, Sea 5, overcast, rain shower, Vis. bad    
                                                          
    09.04.42 Eastern Atlantic    
    00.00   Outgoing Short Signal:  
        My position is square BE 93.  
                                                                   U-507.  
    04.00 BE 9375    
      WSW 6, Sea 6, overcast, rainy, Vis. bad    
    08.00 BE 9298    
      WSW 4, Sea 5, long Swell, overcast    
    12.00 BE 9522 Day's run:    114 nm, of which      102 nm,     12 nm  
      WSW 4, Sea 3, heavy W and NW-Swell, overcast, occasional rain Total of:     506.5  " ,        "      356.0  "  , 150.5  "  .  
    16.00 BE 9518    
      WSW 3, Sea 2, high W-Swell, cloudy, at times breaking up    
           
           
           
Sun and Moon Data 08.04.42
Sun and Moon Data 09.04.42
 
- 5 -
 
           
           
           
    continued      
    09.04.42      
    20.00 BE 9461    
      SW 3, Sea 3, W and NW-Swell    
    24.00 BE 9457    
      SSW 4, Sea 3, W and NW-Swell    
                                                          
    10.04.42 North Atlantic    
    04.00 BE 9471    
      SW 3, Sea 3, NW and W-Swell, cloudy at times breaking up, Vis. good    
    08.00 BE 8697    
      SW 3, Sea 3, light NW-Swell, overcast    
    08.37 - 09.16   Test dive.  
    12.00 BE 8913 Day's run:    150 nm, of which  148 nm,      2 nm  
      S 4, Sea 3, overcast, Vis. good Total of:     656.5  " ,        "      504  "  , 152.5  "  .  
    16.00 BE 8839    
      S 4, Sea 3, light NW-Swell, overcast, Vis. good    
    20.00 BE 8855    
      S 4-5, Sea 4, Swells, partial overcast, Vis. good    
    24.00 BE 8849    
      S 6, Sea 4, Swell 3, Vis. medium    
                                                          
    11.04.42 North Atlantic    
    04.00 BE 8793    
      S 7, 8 in squalls, Sea 7, overcast, Vis. medium    
    08.00 BE 8794    
      W 2, Sea 3, high Swell, partial overcast, Vis. good    
    09.40 - 09.50   Test dive.  
    12.00 BE 8787 Day's run:    133 nm, of which  131 nm,      2 nm  
      SSW 4. Sea 3, heavy SW-Swell, overcast, Vis. medium Total of:     789.5  " ,        "      635  "  , 154.5  "  .  
           
           
Sun and Moon Data 09.04.42
Sun and Moon Data 10.04.42
Sun and Moon Data 11.04.42
 
- 6 -
 
           
           
           
    continued      
    11.04.42      
    16.00 CF 2231    
      SSW 5, Sea 5, heavy Swell, few clouds, Vis. good    
    20.00 CF 2224    
      SW 2, Sea 4, heavy Swell, overcast, Vis. medium    
    24.00 CF 2217    
      SSW 4, Sea 3, heavy SW-Swell, overcast, Vis. medium    
                                                          
    12.04.42 Atlantic, north of the Azores    
    04.00 CF 2162    
      SW 3, Sea 2, medium SW-Swell    
    06.00   It freshens up strongly.  The boat pounds firmly in the increasing seas and oncoming Swells.  Nearly every sea goes over the boat.  Dived to proceed submerged, to make progress.  
    08.00 CF 2155    
    10.02   Surfaced.  Wind and seas have grown heavier, however have shifted.  Turned about 20° off so that I can make progress on the surface.  
    12.00 CF 2154 Day's run:      93 nm, of which   81 nm,      12 nm  
      WNW 9, Sea 6, high SW-Swell, overcast, rain squall, Vis. bad Total of:     882.5  " ,        "      716  "  , 166.5  "  .  
    16.00 CF 1396    
      W 5, Sea 7, high SW-Swell, few clouds, Vis. good    
    20.00 CF 1623    
      W 4, Sea 5, high Swell, few clouds, Vis. good    
    24.00 CF 1619    
      NW 4, Sea 3, heavy WNW-Swell    
                                                          
    13.04.42 Atlantic, north of the Azores    
    04.00 CF 1566    
      NNW 2, Sea 2, medium WNW-Swell, few clouds, Vis. good    
    08.00 CF 1583    
      NW 2, Sea 3, WNW-Swell, few clouds, Vis. good    
           
Sun and Moon Data 11.04.42
Sun and Moon Data 12.04.42
Sun and Moon Data 13.04.42
 
- 7 -
 
           
           
           
    continued      
    13.04.42      
    09.07 - 09.29   Test dive.  
    12.00 CF 1812 Day's run:      138 nm, of which    137 nm,        1 nm  
      NW 3, Sea 3, medium Swell, partial overcast, Vis. good Total of:     1020.5  " ,        "        853  "  , 167.5  "  .  
    16.00 CE 3934 Used the beautiful weather to clean the cannon and to determine the cause of the rattling noises in the over deck that were heard while monitoring during submerged cruise.  The damage was recognized and corrected (see KTB-Maschine).  During the next test dive no further sounds were heard.  
      NW 1, Sea 2, NW-Swell, partial overcast, Vis. good  
    20.00 CE 3943  
      WSW 2, Sea 2, Swell, partial overcast, Vis. good  
    24.00 CE 3868    
      SSW 2, Sea 1, NW-Swell, Vis. bad    
                                                          
    14.04.42 Atlantic, north of the Azores    
    04.00 CE 3876    
      WNW 1, Sea 1, light NW-Swell, overcast, Vis. bad, hazy    
    08.00 CE 6132    
      W 2, Sea 1, light Swell, overcast, Vis. bad    
    12.00 CE 6116 Day's run:    170 nm, of which      170 nm,        0 nm  
      W 2, Sea 0-1, light W-Swell, overcast, Vis. good Total of:   1190.5  " ,        "        1023  "  , 167.5  "  .  
    16.00 CE 5362 Lubrication of the over deck, repair of storm damage.  
      W 2, Sea 0-1, light Swell, overcast, Vis. good    
    20.00 CE 5381    
      SWbyW 2, Sea 0, partial overcast, hazy    
    22.10   Incoming Radio Message Kr. 2111/14  
        Square BE 5584 convoy 5-10 vessels and 2 escorts recognized, course S, speed 8-10 knots.  
                                                         Lerchen.  
        Am not operating on the convoy, because I am 660 nm away and there are 2 other U-boats which departed Lorient 2 days behind me which must be closer than me.  Additionally I must conserve fuel for my American mission.  
           
           
Sun and Moon Data 13.04.42
Sun and Moon Data 14.04.42
 
- 8 -
 
           
           
           
    continued      
    14.04.42      
    23.40   Incoming Radio Message 2215/14  
        To Lerchen  
        Attack free in favorable attack conditions.  Other boats will not operate on the convoy.  No contact keeper reports.  Before it gets light move off and report situation.  
    24.00 CE 5532    
      WSW 2, Sea 0, light Swell, Vis. 10 nm    
                                                          
    15.04.42 Atlantic, at the Azores passed between Flores and Faial.  
    04.00 CE 5524    
      SW 1, Sea 1, overcast, Vis. good    
    08.00 CE 5462    
      SW 3-4, Sea 2, few clouds, Vis. good    
    09.34 - 09.48   Test dive.  
    12.00 CE 5457 Day's run:    178 nm, of which       177 nm,       1 nm  
      SSW 3, Sea 3, few clouds, Vis. 15 nm Total of:   1368.5  " ,        "        1200  "  , 168.5  "  .  
    14.30   Incoming Radio Message 1319/15  
        Folkers, Schacht, Würdemann, Wattenberg.  
        Send required position and fuel report as early as the longitude of square DF 47.  
    16.00 CE 5474 Cannon exercises and cleaning.  
      SW 3, Sea 1, W-Swell, few clouds, Vis. 15 nm    
    20.00 CE 4923    
      SW 3, Sea 1, W-Swell, few clouds, Vis. 15 nm    
    24.00 CE 4915    
      SW 2-3, Sea 1, light SW-Swell, overcast, Vis. 15 nm    
                                                          
    16.04.42 Atlantic, west of the Azores    
    04.00 CE 4861    
      NW 3, Sea 2, overcast, Vis. changing    
    08.00 CE 4857    
      N 3, Sea 2, overcast, Vis. medium    
    12.00 CE 4796 Day's run:     156 nm, of which     156 nm,       0 nm  
      N 2, Sea 1, overcast, Vis. 15 nm Total of:   1524.5  " ,        "        1356  "  , 168.5  "  .  
           
Sun and Moon Data 14.04.42
Sun and Moon Data 15.04.42
Sun and Moon Data 16.04.42
 
- 9 -
 
           
           
           
    continued      
    16.04.42      
    16.00 CE 7122    
      N 2, Sea 1, few clouds, Vis. good    
    20.00 CE 7114    
      N 2, Sea 2, few clouds, Vis. good    
    24.00 CD 9352    
      NNE 0-1, Sea 0-1, few clouds, Vis. good    
                                                          
    17.04.42 Atlantic, west of the Azores    
    04.00 CD 9269    
      NE 1, Sea 1, few clouds, Vis. changing    
    08.00 CD 9285    
      NE 3, Sea 2, overcast, Vis. changing    
    09.10 - 10.55   Dived.  Afterwards main ballast and fuel oil tank 7 was blown after the fuel there was pumped into the regulating and reserve fuel oil tank.  As a consequence the boat runs about 1/2 knot faster.  
    12.00 CD 9277 Day's run:     182 nm, of which     178 nm,       4 nm  
      E 3, Sea 2, few clouds, Vis. good Total of:   1706.5  " ,        "        1534  "  , 172.5  "  .  
    16.00 CD 9425    
      E 3, Sea 2, few clouds, Vis. good    
    20.00 CD 9441    
      E 3, Sea 4, few clouds, Vis. good    
    24.00 CD 8658    
      SE 4, Sea 4, overcast    
                                                          
    18.04.42 Western Atlantic    
    04.00 CD 8596    
      ESE 4, Sea 4, overcast, Vis. changing    
    08.00 CD 8822    
      ESE 4, Sea 5, overcast, Vis. changing    
    12.00 CD 8814 Day's run:  189.5 nm, of which   189.5 nm,        0 nm  
      SSE 3, Sea 3, SE-Swell, overcast, Vis. changing Total of:   1896.0  " ,        "        1723.5  "  , 172.5  "  .  
           
Sun and Moon Data 16.04.42
Sun and Moon Data 17.04.42
Sun and Moon Data 18.04.42
 
- 10 -
 
           
           
           
    continued      
    18.04.42      
    16.00 CD 8753 Passed an empty lifeboat.  
      SbyE 2, Sea 2, Swell, overcast, rain, Vis. 8 nm    
    20.00 CD 8748    
      SbyE 2, Sea 1, light S-Swell, cloudless, Vis. 15 nm    
    24.00 CD 7994    
      SSW 1, Sea 1, few clouds, Vis. 15 nm    
                                                          
    19.04.42 Western Atlantic    
    04.00 DF 1213    
      SSE 1, Sea 1, few clouds, Vis. good    
    08.00 DF 1136    
      SE 1, Sea 1, light Swell, few clouds, Vis. good    
    09.40   Outgoing Short Signal:  
        My position is square DF 11, fuel inventory 194 cbm.  
                                                         U-507.  
        (Sent on Africa Circuit, because on alternate Greenland Circuit from Control was not understood.)  
    09.57 - 11.17   Test dive, in so doing test air shot tubes 1 and 4.  
    12.00 DF 1129 Day's run:  154 nm, of which       150 nm,        4 nm  
      SSW 1, Sea 1, light SW-Swell, overcast, Vis. 15 nm Total of:   2050  " ,        "        1873.5  "  , 176.5  "  .  
    16.00 DF 1145 Shortly after one another passed 2 barrels and much timber.  
      SSW 2, Sea 1, light W-Swell, few clouds, Vis. 15 nm    
    20.00 DE 3367    
      SSW 2, Sea 1, partial overcast, Vis. 15 nm    
    24.00 DE 3376    
      SSW 3, Sea 1, partial overcast, Vis. 15 nm    
                                                          
    20.04.42 Western Atlantic    
    04.00 DE 3352    
      SSW 1, Sea 1, partial overcast, Vis. good    
    08.00 DE 3227    
      SSW 1, Sea 1, partial overcast, Vis. good    
           
Sun and Moon Data 18.04.42
Sun and Moon Data 19.04.42
Sun and Moon Data 20.04.42
 
- 11 -
 
           
           
           
    continued      
    20.04.42      
    12.00 DE 3541 Day's run:  165 nm, of which       165 nm,        0 nm  
      S 2-3, Sea 2, partial overcast, Vis. 10 nm Total of:   2215  " ,        "        2038.5  "  , 176.5  "  .  
    16.00 DE 3459    
      SSW 3, Sea 3, overcast, Vis. 10 nm    
    18.00   Incoming Radio Message 1630/20  
        To Schacht and Würdemann  
        Head for naval square DA 90 by the shortest route.  Conserve fuel.  Fuel supply on return transit is intended, however not certain.  Notification should be timely.  
        Intend to proceed through the Caicos Passage, Old Bahama Channel, Nicholas Channel.  
    20.00 DE 3475    
      SW 4, Sea 3, overcast, occasional rain, Vis. 10 nm    
    24.00 DE 2932    
      SW 3, Sea 2, light Swell, overcast, occasional rain, Vis. 10 nm                                                   
         
    21.04.42 Western Atlantic    
    04.00 DE 2927    
      SW 2, Sea 2, overcast, Vis. good    
    05.55 DE 2942 Crash dive for 2 semi-rigid airships flying directly towards the boat at an altitude of 300 meters, one to starboard and one to port.  
      SW 3, Sea 2, Vis. changing 3-5 nm  
        Used the time submerged for test air shots from tubes 3 and 5.  
    07.52 DE 2941 Surfaced.  
      SW 3, Sea 3, partial overcast, Vis. 5 nm Outgoing Radio Message 0552/21  
      Square DE 2942 2 zeppelins, course 65°, altitude 300 meters.  
                                                         Schacht.  
        There is the possibility that it was the remote escort for a convoy that sailed from Freetown between 1 and 3 April.  
    12.00 DE 2867 Day's run:  153 nm, of which     147.5 nm,     5.5 nm  
      SSW 3, Sea 2-3, light SW-Swell, overcast, Vis. 10 nm Total of:    2368  " ,        "        2186.0  "  , 182.0  "  .  
    16.00 DE 2876    
      SW 5, Sea 5, light Swell, partial overcast, Vis. 10 nm    
    20.00 DE 5133    
      SW 4, Sea 4, overcast, Vis. 10 nm    
    24.00 DE 5153    
      SSW 2-3, Sea 2, Swell, partial overcast, Vis. 10 nm    
                                                          
           
           
Sun and Moon Data 20.04.42
Sun and Moon Data 21.04.42
 
- 12 -
 
           
           
           
           
    22.04.42 Western Atlantic    
    04.00 DE 5148    
      SSW 1, Sea 1, few clouds, Vis. good    
    08.00 DE 4395    
      SSW 1, Sea 0, partial overcast, Vis. good    
    12.00 DE 4624 Day's run:   165 nm, of which    165 nm,     0 nm  
      W 1-2, Sea 0-1, SW-Swell, partial overcast, Via. 15 nm Total of:    2533  " ,        "        2351  "  , 182  "  .  
    16.00 DE 4563    
      WNW 1, Sea 1, few clouds, Vis. 15 nm Test fired the 3.7 cm, cleaned weapons, over deck work and readjusted the exhaust gas valves.  
    20.00 DE 4558    
      WNW 1, Sea 1, few clouds, Vis. 15 nm    
    24.00 DE 4578    
      WNW 1, Sea 0-1, W-Swell 1, overcast, Vis. 15 nm                                                   
         
    23.04.42 Western Atlantic    
    04.00 DE 4734    
      No wind and Sea. overcast, Vis. good    
    08.00 DE 4743    
      No wind and Sea, partial overcast, Vis. good    
    11.16 - 12.13   Test dive, in so doing test air shot tube 4.  
    12.00 DD 6969 Day's run:   180 nm, of which    177 nm,     3 nm  
      N 0-1, no Sea,  light NNW-Swell, overcast, Vis. 10 nm Total of:    2713  " ,        "        2528  "  , 185  "  .  
    16.00 DD 6988 Both diving planes centered because the sea is calm, and the bow of the boat after blowing main ballast and reserve fuel oil tank 7 is far out.  As a result speed of advance increased about 0.2 knots, probably also saving fuel.  
      E 2, Sea 2, overcast, Vis. 10 nm  
    20.00 DD 9314    
      E 3, Sea 2, overcast, Vis. 10 nm    
    24.00 DD 9228    
      E 4, Sea 3, overcast, Vis. 10 nm    
                                                          
           
           
           
Sun and Moon Data 22.04.42
Sun and Moon Data 23.04.42
 
- 13 -
 
           
           
           
           
    24.04.42 Western Atlantic    
    04.00 DD 9244    
      E 2, Sea 1, overcast, rain showers, Vis. changing    
    08.00 DD 9183    
      SSW 3, Sea 2, few clouds, Vis. good    
    12.00 DD 9177 Day's run:   193 nm, of which    193 nm,     0 nm  
      SW 3, Sea 2, overcast, Vis. good Total of:    2906  " ,        "        2721  "  , 185  "  .  
    16.00 DD 8634    
      WSW 4, Sea 3, few clouds, Vis. 15 nm    
    20.00 DD 8651    
      SW 3, Sea 2, partial overcast, Vis. 15 nm    
    24.00 DD 8647    
      SW 3, Sea 2, partial overcast, Vis. 15 nm                                                   
         
    25.04.42 Western Atlantic    
    04.00 DD 8591    
      W 2, Sea 2, partial overcast, bright moonshine, Vis. 8 nm    
    08.00 DD 8587    
      WbyS 4, Sea 3, partial overcast, bright moonshine, Vis. 8 nm    
    12.00 DD 8736 Day's run:   149 nm, of which    149 nm,     0 nm  
      SWbyW 3, Sea 3, SW-Swell, partial overcast, Vis. 10 nm Total of:    3055  " ,        "        2870  "  , 185  "  .  
    14.55   Incoming Radio Message 1241/25  
        To Schacht and Würdemann  
        Heavy traffic is suspected in both directions from square DM 19 and 43 to square DA 6850, 8120, 5850.  Very heavy tanker traffic from both of the last points.  Attempt to interdict traffic routes in constricted areas.  Attention is called to situation reports as soon as noticed, possibly through radio repeaters.  
    16.00 DD 8737    
      W 4, Sea 3, partial overcast, occasional rain, Vis. changing    
    20.00 DD 8755    
      WbyN 4, Sea 4, partial overcast, Vis. 10 nm    
           
           
           
Sun and Moon Data 24.04.42
Sun and Moon Data 25.04.42
 
- 14 -
 
           
           
           
    continued      
    25.04.42      
    20.46 - 21.34   Test dive, in so doing test air shot tube 2.  Diving was delayed because the boat was limited in ability to dive due to a leak in the connection of the main bilge pump.  
    24.00 DD 8749                     (See K.T.B. Maschine.)  
      WNW 4, Sea 4, W-Swell, overcast, Vis. 10 nm    
                                                          
    26.04.42 Western Atlantic    
    04.00 DD 7996    
      WNW 4, Sea 3, partial overcast, bright moonshine, Vis. 8 nm    
    08.00 DD 7989    
      NW 3, Sea 2, partial overcast, bright moonshine, Vis. 8 nm    
    12.00 DO 2315 Day's run:   118 nm, of which    115 nm,     3 nm  
      NW 4, Sea 3, NNW-Swell, partial overcast, Vis. 10 nm Total of:    3173  " ,        "        2985  "  , 188  "  .  
    16.00 DO 2256    
      NW 3, Sea 2, few clouds, Vis. 15 nm    
    20.00 DO 2274    
      NW 3, Sea 2, few clouds, Vis. 15 nm    
    24.00 DO 2426    
      NW 3, Sea 2, NNW-Dwell, partial overcast, Vis. 10 nm    
                                                          
    27.04.42 Atlantic east of the Bahama Islands    
    04.00 DO 2444    
      NW 3, Sea 2, few clouds, bright moonshine, Vis. 8 nm    
    08.00 DO 1685    
      NWbyW 2, Sea 1, few clouds, Vis. good    
    12.00 DO 1911 Day's run:   183 nm, of which    183 nm,     0 nm  
      NNW 2, Sea 1, few clouds, Vis. 10 nm Total of:    3356  " ,        "        3168  "  , 188  "  .  
    13.01 - 14.09   Crash dive training.  
    16.00 DO 1829 Cannon cleaning and over deck work.  
      NNW 1, Sea 1, few clouds, Vis. 15 nm    
    20.00 DO 1847    
      N 1, Sea 1, few clouds, Vis. 15 nm    
           
           
           
Sun and Moon Data 25.04.42
Sun and Moon Data 26.04.42
Sun and Moon Data 27.04.42
 
- 15 -
 
           
           
           
    continued      
    27.04.42      
    21.00   Incoming Radio Message 1707/27  
        Due to special aircraft danger in bright full moon nights if necessary set off from the coast.  Keep M.G. C 30 ready to shoot, magazine in place.  Weapons must be well cared for and checked by test firing.  If at all possible weapons should be manned by a Gunner's Mate.  If aircraft are first detected shortly before the attack do not dive, instead shoot, increase speed, turn away hard.  If first approach fails, dive deep at AK while the aircraft is turning for the next approach.  
    24.00 DO 1788    
      NNE 2, Sea 1, few clouds, Vis. 15 nm                                                   
         
    28.04.42 Atlantic, east of the Bahama Islands    
    04.00 DN 6336    
      N 1, Sea 1, few clouds, bright moonshine, Vis. 8 nm    
    08.00 DN 6354    
      NE 1, Sea 1, few clouds, bright moonshine, Vis. 8 nm    
    12.00 DN 6295 Day's run:   184 nm, of which   180.5 nm,     3.5 nm  
      NE 1, Sea 1, few clouds, Vis. 10 nm Total of:    3540  " ,        "       3348.5  "  , 191.5  "  .  
    16.00 DN 6513    
      NE 1, Sea 1, few clouds, Vis. 15 nm    
    20.00 DN 6438    
      NE 1, Sea 1, few clouds, Vis. 15 nm    
    24.00 DN 6446    
      NE 1, Sea 1, cloudless, Vis. 10 nm, bright moonshine From today 2 cm is kept ready to shoot at night.  
                                                        
    29.04.42 West Indies Islands area    
    04.00 DN 5691    
      NE 1, Sea 1, few clouds, bright moonshine, Vis. very good    
    08.00 DN 5678    
      NE 1, Sea 0, cloudless, bright moonshine, Vis. good    
           
           
           
Sun and Moon Data 27.04.42
Sun and Moon Data 28.04.42
Sun and Moon Data 29.04.42
 
- 16 -
 
           
           
           
    continued      
    29.04.42      
    10.54 - 12.13 DN 5826 Crash dive training.  
        On surfacing Providenciales Island (Caicos) is in sight abeam to port (141°T) distance about 15 nm.  Shortly afterwards it passes out of sight again.  
    12.00 DN 5826 Day's run:   176 nm, of which       173 nm,       3 nm  
      NE 2, Sea 0-1, few clouds, Vis. 15 nm Total of:     3716  " ,        "       3521.5  "  , 194.5  "  .  
    16.00 DN 5842    
      ENE 1, Sea 1, few clouds Vis. 15 nm    
    16.45 DN 5766 Little Inagua Island in sight ahead to port (187°T).  
    19.10   Island out of sight astern to port (97°T).  Course set for Punta Lucrecia.  
    20.00 DN 5785    
      ENE 1, Sea 1, cloudless, Vis. 15 nm    
    24.00 DN 4998 Had the 600-meter wave monitored, because I have now come to the area where heavy steamer traffic is expected.  There were no results but we are not operating on a steamer.  
      ENE 2, Sea 1, few clouds, Vis. 15 nm  
           
           
    30.04.42 West Indies Islands area    
    04.00 DN 7313    
      NE 2, Sea 2, few clouds, bright moonshine, Vis. good    
    08.00 DN 7231    
      NE 2, Sea 2, partial overcast, bright moonshine, Vis. very good    
    10.33 DN 7221 Punta Lucrecia Lighthouse in sight ahead to port (241°T) at 17 nm.  Burns as in peacetime.  During the night had a current offset of about 1 knot in direction 41°T.  
        Headed to the NW within visibility range of the north coast of Cuba.  
    12.00 DN 7215 Day's run:   186 nm, of which       186 nm,       0 nm  
      NE 2, Sea 1, few clouds, Vis. 10 nm Total of:     3902  " ,        "       3707.5  "  , 194.5  "  .  
    16.00 DN 4798    
      ENE 2. Sea 1, few clouds, Vis. 15 nm    
    16.48 DN 4797 Smoke trace and 1 masts in sight 20° to starboard (315°T), bow right 20°.  It is a small tanker traveling in ballast course 115°, speed 8 knots.  Range 10 nm.  
           
Sun and Moon Data 29.04.42
Sun and Moon Data 30.04.42
 
- 17 -
 
           
           
           
    continued      
    30.04.42      
    16.55   Dived to attack.  
    18.10   Surfaced in the wake of the steamer because it is not worth a torpedo.  Steamer sunk with artillery.  After the first shot the bridge was hit after which the steamer turned towards land, however after the second hit (third shot) stopped and set out boats.  
    19.10 DN 7131 Steamer capsizes.  It was the U.S.A. tanker FEDERAL, "2881" GRT.  Shortly before he had apparently communicated with the Florida Radio Station, because he was continually asked to provide his position.  Probably the steamer had reported me.  On the other hand, my presence is also known as the sinking took place within sight of the coast.  
    22.22 DN 4771 Smoke feather in sight to port (245°T).  Steamer quickly comes over the horizon.  He has one smokestack and forward and aft each one mast with attached cargo booms.  He steers course 165° at 8 knots and on coming in sigh already had a target angle of 70°.  Attempted to get ahead at the limit of visibility.  
    22.30 DN 4775 Crash dive for flying boat type Consolidated range 3000 meters, target angle 0°.  
    22.51   Surfaced.  Steamer bears 214.5°T.  Attempted to get ahead again at GF.  
    23.13   In the vicinity of the steamer the Consolidated circles, apparently as an escort.  
        Turned stern to the aircraft.  
    23.15 DN 4771 Crash dive, because the aircraft comes towards me, range 3000 meters.  Held on to the steamer submerged by sound bearings.  Initially the bearings shift ahead, then change direction and go astern again, at the same time grow significantly weaker.  Therefore the steamer has turned towards land.  
    23.46   Surfaced.  Nothing more is seen of the steamer and aircraft.  Steamer seems to have entered Port Padre.  The air escort was probably on account of my appearance.  Continued transit in the direction of the Old Bahama Channel.  
    24.00 DN 4772    
      NE 3, Sea 2, partial overcast, Vis. 15 nm    
                                                          
           
           
Sun and Moon Data 30.04.42
 
- 18 -
 
           
           
           
           
    01.05.42 Bahama Channel    
    03.34 DM 6964 Maternillos in sight ahead to port (260°T).  Burns as in peacetime.  
    04.00 DM 6964    
      NE 2, Sea 1, few clouds, bright moonshine, Vis. very good    
           
    05.25 DM 6953 3 shadows in sight to 70° port (236°T), shifting slowly out, may be a patrol vessel line.  
    05.43 DM 6953 Dived to attack.  At shooting range recognize that it is a tugboat (tug, barge, pile driver).  Attack broken off because the target is not worth a torpedo and use of artillery is not possible due to the seas.  Moved off submerged.  
    07.20   Surfaced.  Tug bears 65°T, with course for the Bahama Bank.  Showed small silhouette and moved off on the surface, afterwards again came to course for the entrance to the Old Bahama Channel.  
    08.00 DM 6952    
      N 2, Sea 1, few clouds, bright moonshine, Vis. good    
    11.55 DM 6914 Cayo Verde ahead to port bearing 281°T, burning as in peacetime.  
    12.00 DM 6914 Day's run:   159 nm, of which   144.5 nm,   14.5 nm  
      NE 2-3, Sea 2, partial overcast, Vis. 10 nm Total of:     4061  " ,        "         3852  "  ,   209  "  .  
    12.45 DM 6833 Lobos Cay in sight ahead to starboard bearing 345°T.  Does not burn.  Probably because it was already too bright.  On passing was probably seen by the keeper because later an aircraft circled over this location the entire day.  
    12.55 DM 6831 Steamer in sight 40° to port, turned towards it.  On coming closer recognized that it was a wreck on the southern edge of Cayo Confites Island of the Palmen Group.  Again came to old course.  
    14.46 DM 6598 A small white steamer in sight ahead to port (286°T).  Quickly comes over the horizon, course apparently 125°.  
    14.52   Dived to attack.  
    15.40   Surfaced, because the steamer does not come in sight in the periscope after the expected time.  Nothing more is seen of the steamer.  Had apparently turned away, or followed.  
    15.42 DM 6594 Crash dive for aircraft type Consolidated, that approached me from port astern (bearing 170°T) target angle 0°, range 2500 meters.  
    16.00 DM 6594    
      NE 2, Sea 2, few clouds, Vis. 15 nm    
    16.45   Went to periscope depth, aircraft circles astern to port (155°T), turns suddenly and comes towards me decreasing altitude substantially.  Again went deep.  
           
           
           
Sun and Moon Data 01.05.42
 
- 19 -
 
           
           
           
    continued      
    01.05.42      
    18.55 - 19.15 DM 6583 Propeller sounds, 90 RPM, bearing 250°R (205°T), shifting ahead and disappearing in 295°R (250°T).  Apparently a follower.  Did not attack because from the experience of the previous day Consolidated probably circled above him in escort.  Instead as soon as possible I will get out of the geographically limited Bahama Channel into my assigned operations area where I expect more worthwhile targets.  
    20.00 DM 6582    
    20.35 - 21.16 DM 6582 Propeller sounds bearing 71°R (26°T) shifting astern and disappearing in 104°R (59°T).  
    21.22 - 21.42   Propeller sounds from 88°R (43°T) to 120°R (75°T).  
    22.25   Surfaced.  
    22.30 DM 6582 Crash dive for aircraft type not recognized, probably again the Consolidated range 5000 meters.  Directly ahead there was a steamer that I wanted to operate on.  Passed soon after by sound bearings.  Speed 8 knots, course 125°.  
    24.00 DM 6558    
                                                          
    02.05.42 Old Bahama Channel    
    00.41   Surfaced.  
    00.43 DM 6558 Crash dive for inbound 3-engined land-based aircraft (possibly also a Consolidated) range 3000 meters.  Came directly from behind in the wake (135°T).  I'm just about out of compressed air and batterly power.   I can no longer afford repeated crash dives therefore will remain submerged until darkness.  
    02.41 DM 6557 Surfaced.  No aircraft seen.  Moon is covered by the clouds.  Proceeded at HF to change the battery and to get out of restricted waters into my assigned operations area.  
        Cayo Paredon Lighthouse bears 245°T, burns as in peacetime.  
    04.00 DM 6545    
      E 2, Sea 1, overcast, Vis. good, bright moonlit    
    04.40 DM 6547 20° to starboard (260°T) smoke trace in sight.  Turns out to be the same white steamer from the morning.  Did not attack because it is not worthwhile. (size about 800 GRT speed 4 knots)  
    06.12 DM 6461 Cayo Caiman Lighthouse in sight ahead to port (237°T) burns as in peacetime.  
           
           
Sun and Moon Data 01.05.42
Sun and Moon Data 02.05.42
 
- 20 -
 
           
           
           
    continued      
    02.05.42      
    06.45   Again went to economical transit speed.  
    08.00 DM 6427    
      NE 2, Sea 2, few clouds, bright moonshine, Vis. good    
    08.45 DM 6427 Cayo Caiman Lighthouse out of sight astern to port (153°T).  
    09.00   A smoke trace in sight 40° to starboard (330°T).  Range 3 nm.  Steamer comes quickly over the horizon, had bow left 40°, therefore seems to have come out of the Santaren Channel.  A short time later he turns 40° to port and heads directly for me.  
    09.05   Because the moonshine is bright as day, dived to attack submerged.  Steamer is about 3000 GRT, has normal bow, 2 goal masts, bridge and smokestack on the superstructure and runs by RPM 7-8 knots.  
    09.21   Shot from tube 5.  Range 400 meters, target angle 95.5°, target speed = 8 knots, depth = 3 meters.  
        Miss.  Steamer turned at the moment of the shot.  Despite this the torpedo should have hit, because range was very low (in the periscope only half of the steamer).  Torpedo had probably under steered.  In the future to ensure that the torpedo is steered with certainty will only set depth 2 meters.  
    09.44   Surfaced.  Did not pursue because the steamer proceeded in ballast and I do not want to waste time in reaching my operations area.  Steamer disappeared zig zagging in the direction of the Old Bahama Channel.  After that the whole area seems to be alerted.  Continued on the surface to put the Cay Sal Bank behind, to get out of the air surveillance area that seems to be on the main shipping route as soon as possible.  
    12.00 DM 5633 Day's run:   136 nm, of which         96nm,   40 nm  
      E 2, Sea 1, partial overcast, Vis. 10 nm Total of:     4197  " ,        "         3948  "  ,   249  "  .  
    16.00 DM 5357    
      E 2, Sea 2, partial overcast, Vis. 10 nm    
   

17.00

 

  Aircraft type Consolidated in sight bearing 120°R (25°T), range 3000 meters, target angle left 70°.  Seems to come out of the Old Bahama Channel, because by maintaining its previous courses it must come quite close, dived, to remain undetected.  
    17.05    
         
    17.25   Surfaced.  
    17.51 DM 5371 Crash dive for aircraft type Consolidated, that comes directly towards me from 50° to starboard (315°T), range 2000 meters.  So it seems to have noticed something previously.  
    20.00 DM 5372    
           
Sun and Moon Data 02.05.42
 
- 21 -
 
           
           
           
    continued      
    02.05.42      
    20.20   Surfaced.  
    22.33 DM 5374 Crash dive for aircraft that comes towards me out of the clouds from astern (60°T), range 4000 meters.  Seems to be watching continuously.  Changed to the south side of the Nicholas Channel to lose the aircraft.  
    24.00 DM 5296    
                                                          
    03.05.42 Nicholas Channel    
    02.30   Surfaced.  The night is favorable to continue transit, the moon is still not up.  Also there are no aircraft to be seen.  It seems the Americans do not patrol this area by night.  The coastal lighthouses burn as in peacetime.  
    04.00 DM 5281    
      E 2, Sea 1, few clouds, bright moon, Vis. good    
    05.55   Smoke trace in sight 40° to port (230°T).  Range 6.5 nm.  It is a small steamer of about 2500 GRT (normal bow, mast, bridge, mast, smokestack, normal stern), on opposite course.  
    06.16   Dived to attack, because the moon is too bright for attack on the surface.  
        Due to the coastal shipping route the steamer has a course of 90°, and makes 90 RPM.  
    06.53 DM 5282 Shot from tube 2, range 1000 meters, target angle 82.5°, target speed = 9 knots, depth = 2 meters.  
        Miss  
        Due to setting an incorrect target angle (right instead of left).  
    07.12   Surfaced.  Did not pursue, because for this purpose the steamer was too small and I want to finally get out of the Channel and reef area where I am forced to spend the entire day submerged.  
    07.40   Steamer in sight 10° to port (260°T).  It is sailing in the opposite direction and has the same course as its predecessor.  Had normal bow, mast bridge, and smokestack on the superstructure, mast, normal stern.  Estimated size 3500 GRT, speed by RPM 8 knots.  Range 5.5 nm.  
    07.45   Dived to attack, because the moon is too bright for a surface attack.  
    08.00 DM 5249    
      E 2, Sea 1, few clouds, bright moonshine, Vis. good    
    08.16   Shot from tube 4, range 1000 meters, target angle 94.5°, target speed = 8 knots, depth = 2 meters.  
        Miss.  By sound bearings passed behind.  Not understood because target angle and speed  
           
           
Sun and Moon Data 02.05.42
Sun and Moon Data 03.05.42
 
- 22 -
 
           
           
           
    continued      
    03.05.42      
        were perfectly determined and a range estimate with a parallax of red 1 would have had little impact.  Passing under is not in question since the steamer was fully loaded.  One of the two torpedoes detonated after 20 minutes on the sea bottom.  
    08.37   Surfaced.  Did not pursue, for the same reasons as above.  Ran at HF to charge the battery.  Headed to the west within visibility range of the coast.  
    12.00 DM 5181 Day's run:   141 nm, of which      107nm,   34 nm  
      ESE 1, Sea 1, few clouds, Vis. good Total of:     4338  " ,        "        4055  "  ,   283  "  .  
      At the beginning of dawn set off from the coast and operated on the line connecting Key West - Havana.  No traffic seen, apparently the Americans have Sunday off.  
    16.00 DM 4369    
      ESE 1, Sea 1, few clouds, Vis. 20 nm    
    19.45   2 masts with flags and pennants in sight abeam to starboard (55°T).  Initially identified as a destroyer group with target angle right 20°, because the positions of the masts relative to one another continually changed.  Range 10 nm  
    19.51   Dived to attack.  On coming closer was recognized as a large tanker of about 9000 GRT with Norwegian flag type ALEXANDRIA HOEGH.  Tanker zig zagged around general course 330° about 30° to each side.  Speed 11.5 knots.  It is probably en route from Key West to Havana.  
    20.00 DM 4328    
      SE 1, Sea 1, few clouds, Vis. 15 nm    
    20.50 DM 4329 2-fan from tubes 1 and 4, range 1500 meters, target angle 90.5°, target speed 11 knots, depth = 2 meters.  
        Miss.  From sound bearings passed perfectly behind.  Target angle and speed were indisputable.  Depth setting of 2 meters makes passing under impossible, pistol function was proved by a bottom detonation after about 15 minutes running time, a range estimate with a parallax of green one could hardly have had an effect.  It remains only that torpedoes equipped with the new pistols are apparently too slow.  The required addition in this case would have been about 2 knots. In the future will increase the enemy's speed setting and also get closer  because at shorter ranges the feared effect apparently does not take place.  
    21.15   Surfaced.  In the meantime am heavily offset to the east by the Gulf Stream current.  
    24.00 DM 4321    
      ESE 2-3, Sea 1-2, few clouds, Vis. 15 nm                                                   
           
           
Sun and Moon Data 03.05.42
 
- 23 -
 
           
           
           
           
    04.05.42 Florida Straits Headed for my operations area via the Tortugas Bank.  
    04.00 DM 1896    
      NE 1, Sea 2, few clouds, Vis. good, moonlit    
    08.00 DM 1882    
      NE 1, Sea 1, cloudless, clear, moonshine    
    12.00 DM 1846 Day's run:   152 nm, of which      147nm,      5 nm  
      E 2-3, Sea 2, clear sky, Vis. 10 nm Total of:     4490  " ,        "        4202  "  ,   288  "  .  
    13.18   Tanker in sight 60° to starboard (10°T).  Target angle 70°, course about 120°, speed 12 knots.  Estimated tanker at about 9000 GRT.  (Mast, large spacing, mask, bridge, smokestack, mast).  
    13.36   Pursuit broken off because the earliest I could be in shooting position is the Florida Straits.  Moreover the whole hunt, which I can barely afford in terms of fuel, can be expected to turn to the unfavorable side for me after passing Tortugas.  I hope to get even cheaper opportunities in the operational area.  Held a little more to starboard to get into the correct steamer route.  
    14.47   Smoke feather in sight abeam to port, shifts quickly astern.  From bearings steers 115° and runs at 19 knots.  Pursuit is hopeless.  With the frequency of the steamers, I'll wait until I meet one which on sighting I'm already in a favorable position.  
    16.00 DM 1841    
      NE 2, Sea 2, few clouds, Vis. 15 nm    
    16.50   Steamer in sight 40° to starboard.  Range about 12 nm, target angle 60°.  Therefore pursuit hopeless.  
    16.55   Directly ahead  a steamer of about 2500 GRT in sight (Normal bow, mast with cargo derricks., normal stern).  He has the exact opposite course 135°.  Range 11 nm.  
    16.59   Dived to attack.  
    17.42 DM 1739 Shot from tube 5 , range 500, target angle 89°, depth 2 meters, target speed 10.  By RPM and plotting the steamer ran at 8.5 knots.  After the previous experience 1.5 knots higher speed was set as target speed.  
        Hit aft.  Steamer settles immediately astern up to the waterline and goes vertical in three minutes.  
    17.52   Surfaced.  Steamer sinks upright.  
           
           
           
Sun and Moon Data 04.05.42
 
- 24 -
 
           
           
           
    continued      
    04.05.42      
        2 steamers in sight bearing 27.5°T.  Attempt to pursue at GF.  
    18.15   Pursuit broken off because the closer of the two steamers to me turns to the Florida Straits.  
    19.45   Passed the sinking location of the steamer.  Asked the shipwrecked, which float on three rafts, the name of the steamer and supplied them with tobacco, biscuits and drinking water.  Steamer had not transmitted.  It was the 2500 GRT steamer "OLANCHO" or something similar.  
    20.00 DM 1737    
      N 2, Sea 2, nearly completely cloudless, Vis. 15 nm    
    20.38   Mastheads in sight bearing 50°T.  Initiated maneuver ahead.  
    21.10   Pursuit broken off because it is hopeless.  
    22.18   Vessel in sight 20° to port (295°T).  
    22.20   Dived to attack.  Did not fire because the target was only a PC boat.  
    23.09   Surfaced.  
    23.58   Steamer in sight 40° to port (320°T).  Had bow right target angle 25°, course 115°.  7.5 nm.   
    24.00 DM 1494 Dived to attack.  
      E 2, Sea 1-2, nearly cloudless, Vis. 15 nm    
           
    05.05.42 Gulf of Mexico    
    01.32 DM 1467 Shot from tube 6.  Range 500 meters, target angle 97.5°, target speed = 9 knots, depth = 2 meters.  
        Hit forward 30 meters, tanker exploded and immediately burst into bright flames.  It was apparently a 10000 toner of "SUN type" (raked bow, mast, 2 large tanks, bridge, 2 large tanks, mast, smokestack on superstructure)  
    01.46   Surfaced.  One part of the tanker still floats however quickly goes under.  The entire sea burns in a widening circle at the sinking location.  Above it a rising mushroom smoke cloud.  
    01.55   On the 600-meter wave received:  
        "SSS from tanker JOSEPH M. CUDAHY:  a tanker is torpedoed 9 nm from us, burning.  Position 65 nm NW of Tortugas 23.50 GMT.  
        The report was immediately repeated by the land station.  
        The vessel that made the report must be within visual range.  Therefore searched the horizon especially attentively.  
    02.34   Tanker sighted beating 327°T.  Target angle 70°.  Range 11 nm.  This was the one that reported us.  Maneuvered ahead at GF.  Tanker has obviously turned off from the sinking location and steers zigzag courses between  
           
Sun and Moon Data 04.05.42
Sun and Moon Data 05.05.42
 
- 25 -
 
           
           
           
    continued      
    05.05.42   0° and 40°.  
    04.00 DM 1436 The night was very dark, therefore surface attack.  
      E 2, Sea 1, few clouds, Vis, greatly reduced, then shortly before moonrise quickly increasing    
    04.24 DM 1433 Shot from tube 3, range 600 meters, target speed = 14 knots, depth = 2 meters, target angle right 95.5°.  
        Miss passed ahead, apparently the steamer had seen me at the last minute and stopped.  
        Shot from tube 4, range 400 meters, target speed = 8 knots, depth 2 meters, target angle right 100.9°.  
        Hit center.  Steamer exploded and immediately burst into bright flames from forward to aft.  The sea again burns all around and over the fire location a rising mushroom cloud forms.  
        Set off to the west at GF.  During the attack on the 600-meter wave was received:  
        "SSS from tanker JOSEPH M. CUDAHY:  
        At 25 47N, 8357W at 02.30 GMT."  
        The radioman of the ship did not finish with his transmission because in the meantime the tanker exploded.  
    05.20   The U.S.A. land station issued the following U-boat Warning:  0225/05 "Urgent U-boat attack in 2530N, 8345W all ships must proceed fully darkened in the Gulf."  
    05.45   In the vicinity of the torpedoing location a parachute flare is in sight.  After it is extinguished the position lights of an aircraft are recognized, that circles the sinking location.  
    06.00   Will utilize the dark night for torpedo downloading.  The next morning I must expect heavy air.  
    08.00 DM 1171    
      E 1, Sea 1, few clouds, Vis. good    
    09.00   While moving a torpedo a shackle on the winch breaks and the torpedo slips on the chute into the boat.  In so doing Fk.Gefr. Haas catches his left forearm between the torpedo and the glide ring and suffers a compound open forearm fracture.  
    11.44   Outgoing Radio Message 2327/4  
        Fk.Gefr. Haas compound open fracture by getting caught between a runaway torpedo.  Request instructions.  No pain relieving means on board.  Position square DL 33.  
                                                                   Schacht.  
           
           
Sun and Moon Data 05.05.42
 
- 26 -
 
           
           
           
    continued      
    05.05.42      
    12.00 DL 3352 Day's run:   169 nm, of which     158 nm,     11 nm  
      E 1, Sea 1, few clouds, Vis. 15 nm Total of:     4659  " ,        "        4360  "  ,   299  "  .  
    14.00   Downloading torpedoes ended.  
    14.50 - 15.46   Test dive.  
    16.00 DL 3314    
      E 1, Sea 1, few clouds, Vis. 15 nm    
    16.30   Incoming Radio Message 1412/5  
        To Schacht.  
        Injured lie down. Raise the arm by splint. Risk of infection is great, therefore sterile dressings, cod liver oil ointment.  If no morphine is on board, give cognac. Status report within 2 days.  
        It has already been treated in the same way previously.   To anesthetize Luminal has also been given.  The patient lies in a bunk the Officers' Mess and is attended to by a constant vigil.  
    17.00   Incoming Radio Message 1503/5  
        To all boats.  
        Still not reported successes are to be submitted by the morning of 7 May.   
        My situation report should have been submitted simultaneously with the injury Radio Message, but as a result of the strong demands on the crew (several pursuits, heavy Radio Message traffic, downloading the torpedoes, several cases of illness) is still at hand.  The Radio Messages are now prepared and encoded and will be delivered at the next opportunity.  
    20.00 DB 7896    
      SE 1, Sea 1, nearly cloudless, Vis. 15 nm    
    22.00   Incoming Radio Message 1542/5  
        Schacht and Würdemann.  
        1.)  To deliver pain killers be at naval square DL 31 upper-right corner on 6 May  at 15.00 hours.  Würdemann report later arrival by Short Signal if meeting at this time is not possible.  No bearing signals.  
        2.)  Sanitätsmaat [Pharmacists Mate] of the 2. U-Flottille says morphium is on board U-507 according to statement of Funkmaat.  
    24.00 DB 7856    
      ESE 1-2, Sea 0-1, few clouds, Vis. 15 nm    
                                                          
           
           
Sun and Moon Data 05.05.42
 
-27 -
 
           
           
           
           
    06.05.42 Gulf of Mexico    
    04.00 DB 7815    
      SE 1, Sea 0, few clouds, Vis. good    
    06.00   Because Würdemann had not sent a Short Signal to now, return transit to the ordered meeting point.  
    07.45   Incoming Radio Message 0649/6  
        By his Short Signal Würdemann will be one day late to the meeting point.  
        Came about and came to old advance direction to New Orleans  
    08.00 DB 7495    
      SE 1, Sea 0, few clouds, Vis. good    
    09.18   Outgoing Short Signal:  
        Have up to now sunk 4 steamers of 20000 tons.  U-507.  
        Signal was already given one time at 05.59 hours, however was not able to be decoded by Control.  
    12.00 DB 7455 Day's run:   166 nm, of which      163 nm,     3 nm  
      SE 1, Sea 0, few clouds, Vis. good Total of:     4825  " ,        "        4523  "  ,   302  "  .  
    16.00 DB 7419    
      SE 1, Sea 1, partial overcast, Vis. 15 nm    
    18.13   Steamer in sight bearing 178°T, had bow left target angle 5°.  Course about 0°.  It is a fully loaded large freighter of new construction of about 8000 GRT.  Range 9 nm.  
    18.15   Dived to attack.  
    18.53   Shot from tube 4.  Range 700 meters, Target angle left 100°, target speed = 10 knots, depth = 3 meters.  
        Miss, probably target speed set too low, additionally the running track was sighted by the steamer, as is apparent from the Radio Message, (first Ato).  
    19.00   Surfaced, brought steamer to a halt with artillery.  During the pursuit the steamer ran at about 16.5 knots.  The following Radio Message was received from him:  
        "SOS SSS "ALCO PURITAN" U-boat on the surface position 2840N 8822W at 17.00 hours GMT.  U-boat still shoots, torpedo did not hit."  
    19.45 DA 9393 Coup de grace from Tube 1, was partial surface runner (Eto).  
    19.48   Steamer sinks, it was the newly constructed "ALCO PURITAN".  
    20.00 DA 9393 Initially deceptive course 90° until out of sight of the lifeboats.   Thereafter came to course for the meeting point with Würdemann.  
      SE 1, Sea 0, cloudless, Vis. 15 nm  
           
Sun and Moon Data 06.05.42
 
- 28 -
 
           
           
           
    continued      
    06.05.42      
    21.42   Steamer in sight bearing 220°T, target angle right 55°.  Attempt to get ahead at GF.  The steamer seems to be large (mast, further distance, smokestack, further distance mast).  He runs about 20 knots and steers about 345°.  
    22.13   Seaplane with floats in sight bearing 240°T.  As it circles ahead of the course direction of the steamer I am currently hunting it robs my opportunity to achieve a position ahead for the foreseeable future, if I want to arrive in time for the meeting with Würdemann.  Therefore broke off pursuit and again came to course to the meeting point.  
    24.00 DB 7179    
      SE 0-1, Sea 0, cloudless, Vis. 10 nm, hazy horizon    
                                                          
    07.05.42 Gulf of Mexico    
    01.08   Steamer in sight bearing 140°T.  It is already well out with the hazy weather, has target angle left 5°.  It is an older smaller steamer of about 3000 GRT (normal bow, slanted mast, normal stern).  Range 7 nm.  
    01.15   Dived to attack.  Steamer zig zags away from me.  His general course is 340° with zig zags of 20° to either side.  Speed 8 knots.  Did not fire because due to the zig zag the range was too great.  
    02.27   Surfaced 4000 meters astern of the steamer for artillery combat.  Initially closed at GF.  Then at the first shot, which hit the forward mast, stopped.  The crew went to the boats.  Steamer had previously transmitted:  
        "SSS from HEEN (ONTARIO) 2822 N, 8733 W."  
        The report was immediately repeated as a U-boat Warning from the land station.  
    to 03.35   Shot the steamer on fire with artillery until out of 10.5 cm ammunition.  
    03.35   Dived for aircraft.  Maneuvered for a coup de grâce submerged.  Steamer suddenly starts to burn brightly, takes a list and settles deeper.  Departed since a total loss can be assumed.  
    04.00 DB 7426    
      No wind and Sea, few clouds, ground fog, Vis. bad    
           
           
Sun and Moon Data 06.05.42
Sun and Moon Data 07.05.42
 
- 29 -
 
           
           
           
    continued      
    07.05.42      
    04.37   Surfaced.  Steamer burns for its entire length.  
    04.44 - 05.55   Dived for aircraft, that flies directly towards me at an altitude of 200 meters.  
    and 05.01 - 05.10    
    05.10   Surfaced and ran off on the surface.  
        Aircraft comes several times in my greater vicinity however does not see me.  
    07.50   Incoming Radio Message 0637/7  
        To Schacht.  
        Due to air first arrival 8 May 15.00 hours possible.  
                                                                   Würdemann.  
        In the meantime will make a short advance to the NE to the line connecting New Orleans, Mobile- Tampa, Key West and Tortugas.  
    08.00 DB 7469    
      No wind and Sea, cloudless, hazy, Vis. medium    
    12.00 DB 7813 Day's run:   178 nm, of which     167 nm,     11 nm  
      E 1, Sea 0, cloudless, hazy, Vis. 10 nm Total of:     5003  " ,        "        4690  "  ,   313  "  .  
    16.00 DB 7829    
      NE 1, Sea 1, overcast, hazy, no horizon, Vis. 10 nm    
    20.00 DB 7596    
      No wind and Sea, overcast, hazy, Vis. 10 nm    
    from 23.35   Outgoing Radio Message 0123/7  
        1.)  Until Caicos Passage no traffic.  
        2.)  Lighthouses on the north coast of Cuba and Tortuga burn as in peacetime.  
        3.)  Old Bahama Channel and Nicholas Channel regular traffic of small steamers.  Heavy air by day.  Nights and in Florida Straits also Sundays by day no air.  
        4.)  West of Tortuga heavy steamer and tanker traffic course 135°.  
        5.)  Still 12 torpedoes, 130 cbm.  
        6.)  Miss on:  
        2 May square DM 6413, zig zagging 3000 GRT tanker.  
        3 May square DM 5282, 2500 tonner and  
                   square DM 5249, 3500 tonner both course 90°.  
                   square DM 4329, loaded tanker type "ALEXANDRIA HOOGH".  
        All passed behind, now set 2 knot more enemy speed with Etos.  
        7.)  Sunk:  
        30 April square DM 7131, "FEDERAL" with artillery.  
        4 May    square DM 1739, 2600 ton freighter probably "OLANCHO".  
           
Sun and Moon Data 07.05.42
 
- 30 -
 
           
           
           
    continued      
    07.05.42      
        5 May  square DM 1467, large tanker 9000 GRT probably "SUN type".  
                    square DM 1433, "JOSEPH M. CUDAHY".  
        6 May  square DA 9393, "ALCO PURITAN" with artillery and coup de grâce, course 0°.  
        7 May  square DB 7426,  "ONTARIO" with artillery.  Course 325° left burning and sinking.  
                                                                   Schacht.  
        (Radio Message had already been sent from 08.03 to 09.10 hours on alternate frequency, however was not understood by the homeland).  
    24.00 BD 7646    
      No wind and Sea, partial overcast, Vis. 10 nm    
                                                          
    08.05.42 Gulf of Mexico    
    01.00   After reaching the 200 meter line came about to go to the meeting point with Würdemann.  Up to now nothing seen.  
    04.00 DB 7672    
      W 1, Sea 0, few clouds, hazy horizon, Vis. 10 nm    
    08.00 DB 7836    
      No wind and Sea, few clouds, Vis. good    
    12.00 DB 7867 Day's run:   181 nm, of which     178 nm,      3 nm  
      No wind and Sea, few clouds, hazy horizon, Vis. 10 nm Total of:     5184  " ,        "        4868  "  ,   316  "  .  
    13.53   Steamer in sight bearing 191°T at about 8 nm.  It is already well over the horizon, target angle bow right 10°, course about 10, speed 8 knots.  
    13.54   Dived to attack.  
    14.45 DB 7885 Shot from tube 2, range 400, target speed = 10, target angle 87.3°, depth = 2 meters.  
        Hit at the forward edge of the bridge, after 12.5 seconds.  Steamer settles forward somewhat deeper.  Must retract the periscope due to wreckage flying about.  After surfacing an explosive piece of our own torpedo lay on the over deck.   
    14.46   On extending the periscope again the steamer has already sunk.  
    14.49   Surfaced.  It was the 2424 GRT size armed Norwegian steamer "TORNY", was destined for the Mississippi.  
        Headed for the meeting point at HF, Würdemann not met.  Steered search courses.  
    16.00 DB 7888    
      W 1, Sea 0, few clouds, Vis. 8 nm    
           
Sun and Moon Data 07.05.42
Sun and Moon Data 08.05.42
 
- 31 -
 
           
           
           
    continued      
    08.05.42      
    17.30   Dived for aircraft that circles over the sinking location.  Apparently a Martin B-26.  Ran off submerged to the meeting point.  
    18.00   Went to periscope depth.  Shortly thereafter a distant detonation heard, possibly a torpedo hit from Würdemann.  The aircraft still circles always astern.  
    18.33   Surfaced at the meeting point.  While surfacing four quick in succession detonations as from bombs heard.  Distance about 15 nm.  Perhaps Würdemann had torpedoed a steamer and had just been bombed.  
        The hum of aircraft engines can still be heard but not seen in the haze of the horizon.  For safety's sake go 10 nm to the west.  
    20.00 DL 3131    
      W 1, Sea 0, partial overcast, Vis. 8 nm    
    20.55   Outgoing Radio Message 1853/8  
        8 May square DB 7885 armed Norwegian "TORNY" sunk.  Würdemann not met up to now at the meeting point.  Due to air went 10 nm to the west.  
                                                                   Schacht.  
        Continued to steer search courses for Würdemann.  
    24.00 DL 3133    
      WNW 1, Sea 0-1, few clouds, Vis. 15 nm    
                                                          
    09.05.42 Gulf of Mexico    
    00.30   Sinking location of the steamers ahead to starboard.  Wreckage was first taken for a U-boat conning tower.  
    00.45 - 01.45   Checked to see if a floating lifeboat had medical supplies. Nothing was found. A number of charts were fished out.  
        For the rest of the night steered search courses for Würdemann.  
    04.00 DL 3211    
      N 1, Sea 1, overcast, rain squalls, Vis. bad    
    08.00 DB 7887    
      NE 2, Sea 1, overcast, Vis. bad    
    12.00 DL 3132 Day's run:     69 nm, of which      66 nm,       3 nm  
      N 2-3, Sea 1, overcast, occasional rain, summer lightening, moonshine, Vis. medium Total of:     5253  " ,        "        4934  "  ,   319  "  .  
           
           
Sun and Moon Data 08.05.42
Sun and Moon Data 09.05.42
 
- 32 -
 
           
           
           
    continued      
    09.05.42      
    14.53   Outgoing Radio Message 1411/9  
        Würdemann not met.  Because about 18.00 hours distant detonations as from torpedoes, 18.33 hours close in succession detonations as from aircraft bombs heard, report position.  Am positioned 10 nm west of meeting point.  
                                                                   Schacht.  
    16.00 DB 7887    
      NE 2, Sea 2, partial overcast, Vis. 10 nm    
    16.42 DB 7887 Crash dive for Consolidated bearing 105°T, target angle left 15°, range 3000 meters.  Possibly a reconnaissance aircraft on the route from Key West to Galveston.  
        Remained submerged in order to bandage Fk.Gefr. Haas.  
    18.32   Surfaced and continued steering search courses for Würdemann.  
    18.59 DB 7887 Crash dive for Consolidated, bearing 130°T, target angle 0°, range 2500 meters.  
        2 aircraft bombs at 18 and 40 meters.  
        No significant failures.  
        Ran off submerged in so doing made lengthy necessary repairs to the port diesel.  
    20.00 DB 7887    
      NE 2, Sea 2, few clouds, hazy horizon    
    24.00 DB 7878    
                                                          
    10.05.42 Gulf of Mexico    
    03.25   Surfaced.  Initially proceeded to the north to cut across many shipping routes from New Orleans - Florida Straits etc.  After reaching the 200-meter line turned to the west to head for the entrance to the Mississippi.  
    03.53   Outgoing Radio Message 0041/10  
        Left meeting point due to heavy air and aircraft bombs.  Patient fever 39°C.  Wound festers. At present no blood poisoning.  
                                                                   Schacht.  
    04.00 DB 7796    
      NE 2, Sea 1, few clouds, Vis. good    
    07.35   Incoming Radio Message 0628/10  
 

[Essigsaurer Tonerde = Essigsaure Tonerdea  - solution of acetate of alumina - wound dressing]

To Schacht.  
Continue strict immobilization and positioning.  Daily multiple wet dressings with Essigsaurer Tonerde, Borsac or the like. If still available, 2 tablets 3 times daily Prontodial, 2 tablets 2 times daily Dibionta, for pain Antineuralgische Tabletten, as needed, up to 3-4 tablets at once.  With deterioration report again.
[Borsac = Borsalbe - an ointment containing Borax solution - wound dressing]    
[Prontodial = Prontosil - a sulfonamide (substitute for Penicilin)]  
[Dibionta - Vitamin B1+C]   
  [Antineuralgische Tabletten = Tabulettae Antineuralgicae - a pain killing tablet containing 0,01 g Codeinum phosphoricum, 0,25 g Acidum acetylosalicylicum and 0,25 g Phenacetin]    
           
           
Sun and Moon Data 09.05.42
Sun and Moon Data 10.05.42
 
- 33 -
 
           
           
           
    continued      
    10.05.42      
    08.00 DB 7736    
      NE 2, Sea 1, few clouds, Vis. good    
    12.00 DB 7469 Day's run:   131 nm, of which     104 nm,     27 nm  
      NE 1, Sea 0-1, nearly cloudless, Vis. good Total of:     5384  " ,        "        5038  "  ,   346  "  .  
      Vents for main ballast tank and reserve fuel oil tanks 2 and 7 opened, to be able to crash dive faster.  
    16.00 DB 7433 The Chief Engineer reports 1.75 tons fuel missing in fuel bunker 1 internal, possibly as a result of yesterday's aircraft bombs.  Boat stopped and examined for oil trace.  Nothing found.  In so doing discovered that the pennant of the starboard forward diving plane is lose and wrapped around the diving plane.  Pennant unwrapped and the end cut off as far as was accessible from the over deck.  This lose pennant explains the repeatedly occurring knocking noises from forward starboard during submerged cruise, that despite all the efforts so far have been not eliminated.  
      NE 1, Sea 1, few clouds, Vis. 10 nm, hazy horizon  
    20.00 DB 7169    
      NE 2, Sea 1, cloudless, Vis. 15 nm    
    21.15   On 418 khz the following U-boat Warning Report was intercepted:  
        "Urgent U-boat in 2835N 90W.  0813/10.  Commander 8th Naval District."  
        The position lies on the western side of the Mississippi, on the route to Galveston.  The warning can only be for Würdemann, if he still  continued on the evening of the same day ordered for the meeting  
    23.00   The previously deep blue clear water is dark green and slightly milky.  This color promises a good cover from being seen from above.  The distance to the Mississippi and to the coast is the same at about 80 nm.  
    24.00 DB 7134    
      NNE 1, Sea 1, cloudless, no horizon, sky and water merge into one another    
           
           
    11.05.42 Gulf of Mexico    
    02.00   Turned towards the mouth of the Mississippi.  Want to be there in the morning, to operate the entire day off the entrance.  Am heavily set to the north.  Should have reached the 200-meter line in 1 hour, however soundings now already show 50 meters.  
           
Sun and Moon Data 10.05.42
Sun and Moon Data 11.05.42
 
- 34 -
 
           
           
           
    continued      
    11.05.42      
    02.02 DB 4783 Crash dive for Consolidated.  Came towards me at low altitude from port astern (90°T), range 2000 meters.  Apparently before had parallel course and has sighted the U-boat, when he turned we were showing a broad silhouette.  
      No wind and Sea, cloudless, hazy, no horizon  
        4 aircraft bombs, no significant damage.  Ran off to deeper water to the south.  
    03.55   In the sound gear (210°T) propeller sounds, surfaced, above it is hazy.  Pursued in the direction of the propeller sounds, nothing found.  Also the E M 3 [EM 3 is thought to be the FuMO-29 radar] shows nothing.  
    04.00 DB 4785  
      Wind and Sea 0, cloudless, hazy horizon, Vis. bad  
    06.00   Pursuit broken off, advanced in the direction of the Mississippi mouth on the 200-meter line.  
    08.00 DB 7112    
      SW 1, Sea 0, nearly cloudless, hazy horizon, Vis. bad    
    11.00   Incoming Radio Message from Würdemann:  
        Schacht not found.  At first meeting point forced to submerge by U-boat hunter type "PC".  On 11 May from 15.00 hours will be in square DB 77 upper-left corner.  
        I cannot make it in time, also the condition of the patient has improved so much that I can dispense with the meeting now.  
        Corresponding Radio Message could not be sent because I had to dive due to the rapid onset of brightness and the proximity to the coast.  
    12.00 DA 9331 Day's run:   156 nm, of which     151 nm,       5 nm  
      SW 1, Sea 0, nearly cloudless Total of:     5540  " ,        "        5189  "  ,   351  "  .  
    12.10   Ahead to starboard, and a little later ahead to port (bearing 313°T and 250°T) Pass A Loutre [North Pass] Lighted Bell Buoy 2 and South Pass Rear Range Light in sight.  So I have not come as far as I wanted.  
    12.42   Dived and went to periscope depth.  Shortly before passed the limit of the river water.  The water is dirty yellow and protects against being sighted from the air.  Moreover, many pieces of floating wood etc. are in it, so that a periscope is hardly noticeable. Use the submerged cruise to carry out necessary work on diesel.  
    14.50 DA 9351 A small tanker proceeding in ballast in sight bearing 28°T, about 1500 GRT, (normal bow, mast, large space, bridge and smokestack on superstructure, normal stern)  Bow left target angle 5°, course about 215°, speed 10 knots.  Did not attack because not worthwhile.  Steamer drove out of sight in the ground fog.  
    15.28   A large tanker about 2500 tons proceeding in ballast in sight bearing 26°T (cruiser bow, mast, bridge, large space, mast, smokestack,  
           
Sun and Moon Data 11.05.42
 
- 35 -
 
           
           
           
    continued      
    11.05.42   cruiser stern).  Target angle left 10°, course about 215°.  Also let it go because it is not worthwhile.  
    16.00 DA 9351    
    16.30   Steamer of about 3500 GRT in sight bearing 233°T (normal bow, mast, smokestack, mast, normal stern).  Target angle right 5°, course about 50°, speed 8 knots by RPM.  Range 3.5 nm.  
    16.56 DA 9351 Shot from tube 2, range 1000 meters, target speed = 10 knots target angle 92.8°, depth = 2 meters.  
        Miss.  By sound bearings passed behind, or else passed under because the steamer proceeded in ballast.  
    20.00 DA 9354 Again came out of the dirty yellow river water into the dark green brackish water.  According to the Sailing Handbook the main traffic must come shortly before darkness.  Because most mornings steamers run here from New Orleans to have visibility weather for the river trip.  Fog comes mostly about 18.00 hours local time - 02.00 hours German Summer Time.  At 03.00 hours German Summer Time it is dark.  
    23.35   Aircraft type Consolidated comes towards me from starboard astern (340°T).  Periscope retracted.  Seems to be a reconnaissance aircraft  range 2000 meters.  
    23.00 DA 9346 Red white barrel buoy with a spar bearing 164°T (100°T from S Pass in 100 meters)  
    24.00 DA 9346    
                                                          
    12.05.42 Off the Mississippi mouth    
    02.00   Again entered the yellow Mississippi water.  
    02.35   Lighthouse burns as in peacetime.  
    03.30   Surfaced.  It smells strongly of oil on the bridge however an oil trace is not discovered.  Took course to the SW Pass.  East of the South Pass there does not seem to be traffic running.  
    04.00 DA 9349 Outgoing Short Signal:  
      ESE 1, Sea 2, few clouds, Vis. good No support required, meeting point settled.  
                                                                 U-507.  
        (Was not acknowledged.)  
        Steered search courses off the South Passage.  
        Lighthouse burns as in peacetime, however there is no traffic.  
    07.30   "PC" boat avoided on the surface.  Had course for the entrance.  Very difficult to see, small silhouette.  
           
           
Sun and Moon Data 11.05.42
Sun and Moon Data 12.05.42
 
- 36 -
 
           
           
           
    continued      
    12.05.42      
    08.00 DA 9269    
      ESE 1, Sea 1, few clouds, Vis. good, occasional marine phosphorescence    
    11.05   80° to starboard a PC boat avoided on the surface.  He had southerly course and apparently patrolled directly south of the entrance to the SW Pass.  
    11.29   Again a PC boat, this time 50° to starboard with course for the entrance.  Therefore there are a minimum of 2 in this location.  
    11.45   A steamer in sight abeam to port (0°T).  Dawn is already strongly breaking, I cannot go further on the surface.  
    12.00 DA 9347 Day's run:   70 nm, of which     46 nm,       24 nm  
      ESE 2, Sea 1, cloudless sky, Vis. good Total of:     5610  " ,        "        5235  "  ,   375  "  .  
    12.07   Dived at the beginning of brightness, to determine existing conditions at the SW Pass of the Mississippi by day.  By extending the periscope I recognize that a stream of steamers proceeds from the Mississippi.  The majority bend in a hard arc around the western breakwater and the Western Shoal Buoy.  I am positioned too far away, I could make a sure shot at dusk.  A minesweeper drifts about 1000 meters from me stopped at target angle 90°.  
    12.56 DA 9347 Shot from tube 4, range 1000 meters, target angle 90°, depth = 2 meters, target speed = 0.  
        Miss.  The mine search boat gets underway shortly after the shot and turns towards me at target angle 0°.  From a later radio report apparently the torpedo detonated on the West Mole of the SW entrance of the Mississippi mouth.  After the main sweep of the steamers has finished, also the M-boat also moves off to the Western Mole to the west.  
    16.00 DA 9348 The entire day am over run by steamers and tankers from the west, south and east, in and out.  Despite all efforts I cannot get to shooting position.  Unpredictable currents, shallow areas, and the turning of the ships will not let me get into shooting position.  However, when it appears to succeed, a PC boot intervenes. Furthermore, steering the boat in both depth and laterally is very difficult with the highly variable water densities and grip of the current in the Mississippi mouth.  Nevertheless, in several cases I could have shot if I still had a bow Eto.  For an Ato the range was too great and for a stern shot I could not close fast enough.  
           
           
           
Sun and Moon Data 12.05.42
 
- 37 -
 
           
           
           
    continued      
    12.05.42      
    19.44   Aircraft Consolidated in sight (250°T).  Apparently the usual afternoon reconnaissance.  
    20.00 DA 9347    
   

21.27

 

21.55

  Another PC boat that is bigger than the previous ones in sight off the mouth.  A tanker runs out.  I want to get him at the pier-heads, however the small PC boot comes in between. I have to run the periscope up and down.  By sound bearings the PC boat shifts past behind my stern.  On extending the periscope I see a large modern 10000 GRT tanker "PENNSYLVANIA SUN" lying stopped at the entrance.  Apparently he waits on another steamer, now coming down the river, to pass the mouth  
    22.05 DA 9347 Shot from tube 6, range 1500 meters, target angle 90°, depth = 2 meters, target speed = 0.  
        Hit.  Red-brown smoke.  However, because then nothing more happens,  
    22.07   Shot from tube 4.  At the instant of the 2nd shot the tanker exploded.  
        Hit.  Because the first shot with aim point center hit aft 30 meters, the second shot was fired at the bow.  The hit was 30 meters forward.  
        The tanker flies apart and continues to burn in 2 parts.  The sea burns in a widening circle and forms a rising mushroom cloud.  
        The other tanker etc. within visual range turn away.  One that I was operating on nearby, which was protected by a PC boat, I could not get to by day with my Atos in the shallow water (still only 8 meters under the keel).  The other PC boat is between me and the sinking location of the steamer.  Since the discharged condition of my battery no longer allows long cruising, moved off submerged to recharge my battery when it gets dark.  
    24.00 DA 9269    
                                                          
           
           
Sun and Moon Data 12.05.42
 
- 38 -
 
           
           
           
           
    13.05.42 Off the Mississippi mouth    
    03.48   Surfaced.  The tanker still burns astern.  
    04.00 DA 9268 Headed for the lighted buoy south of Ship Shoal, because all ships that go between Galveston and Sabine and the Mississippi mouth must pass there.  Initially ran 2 hours at HF to get the battery in shape, and to get some distance from the sinking location.  Between 08.30 and 09.30 hours I can meet steamers that expect to be off the SW Pass of the Mississippi in the first gray of dawn and between 19.30 and 22.00 hours the steamers that departed the Mississippi at the first gray of dawn and ran to the west.  
      No wind and Sea, few clouds, marine phosphorescence, heavy summer lightening from N to E by which the sea is occasionally brightly illuminated  
    04.42 - 06.05   Outgoing Radio Message 0117/13  
        1.)  From the South Pass 15.00 - 17.00 hours three small steamers in [depth] 30 meters, course 50° and 230°, up to 80 nm east there from nights on the 200-meter line no traffic, 1 steamer in depth 50 meters.  
        2.)  Mississippi lighthouses burn as in peacetime.  S Pass 100°T, in depth 100 meters red white barrel buoy with spar.  
        3.)  Off the Mississippi mainly hazy, no horizon.  Then aircraft are difficult to see.  Dirty water, offers good cover at periscope depth and bad sound conditions.  Off the SW Pass difficult maneuvering due to unpredictable set and heavily changing water density.  
        4.)  SW Pass nights no traffic.  Patrol by 2 PC boats.  At the first gray of dawn  large groups of outbound and inbound steamers and tankers, all large tonnage.  Then the entire day independent steamers.  East and west traffic curves just from behind the pier.  First morning group to the west was escorted by a mine searcher.  Additionally aircraft surveillance on main shipping routes.  
        5.)  12 May square DA 9347 fully loaded large modern tanker of at least 10000 GRT left exploded.  
        6.)  Meeting point with Würdemann settled.  
                                                                   Schacht.  
    08.00 DA 9273    
      NE 2, Sea 2, partial overcast, Vis. greatly changing, at times below 100 meters    
    08.37   A light in sight 30° to port (230°T).  Turned towards, it is a fishing vessel under sail.  
    09.47   Again set course for Ship Shoal Lighted Buoy.  
           
           
Sun and Moon Data 13.05.42
 
- 39 -
 
           
           
           
    continued      
    13.05.42      
    10.00   Many lights from fishing vessels on the port side from 230-280°.  
    12.00 DA 9192 Day's run:      99 nm, of which       61 nm,      38 nm  
      E 2, Sea 1-2, overcast, hazy, Vis. 8 nm Total of:     5709  " ,        "        5296  "  ,   413  "  .  
        Have not seen any steamers up to now.  Went to the south, to be in deeper water at dawn.  
    12.58   Tanker bearing xxx°T, had bow left 75°, course about 115°.  Range 5 nm.  
    13.00   Dived to attack submerged, because dawn has progressed too far.  After 15 minutes the steamer zig zags 20° to port, becomes bow right, target angle 15° and steers about course 95°.  
    13.38   Shot from tube 1, (G 7 A) range 400, target angle right 95°, target speed = 9 knots, depth = 2 meters.  
        Miss.  Steamer stopped at the moment of the shot, must have been seen a moment before.  Torpedo was a surface runner.  Steamer makes low speed ahead.  
    13.39   Shot from tube 3, target angle right 108.2°, target speed = 5 knots, range 400 meters, depth = 2 meters.  
        Miss.  Steamer backs down, turns stern to me, becomes bow left and again goes ahead.  
    13.41 DA 9194 Shot from tube 2, target angle left 117.2°, target speed = 5 knots, range 400 meters, depth = 2 meters.  
        Miss.  Steamer turns away to starboard.  He transmits U-boat Warning:  
        "SSS  GULF PRINCE 2838N, 9105W. Torpedo passed ahead."  
        Steamer runs away zig zagging wildly in an easterly direction.  Can do nothing about it.  I can no longer close submerged, and it is not possible to get him on the surface because I am out of artillery ammunition and additionally the entire area is alarmed.  
        The other tankers in the area turned away, so that I cannot close these submerged.  
        In the course of the next hours operated on still more tankers.  Could not reach shooting position because they were too far away.  
    15.10   2 tankers in sight that are closely escorted by a circling aircraft.  Could not reach shooting position, too far off.  
    15.47   Operated on a gigantic tanker.  Could not reach shooting position, because it was too far off.  This was also escorted by an aircraft.  I cannot reach shooting position here during the day with my G7As.  Additionally the 20-30 meters water depth is too slight that one must fear damage in the event of an aircraft bomb or depth charge attack.  Therefore set off to the south.  Will operate in the section Ship Shoal - Trinity tonight.  
           
           
           
Sun and Moon Data 13.05.42
 
- 40 -
 
           
           
           
    continued      
    13.05.42      
    16.00 DA 9198 From port abeam (90°T) to astern (0°T) a number of fishing vessels in sight.  
    20.00 DA 9435    
    24.00 DA 9462    
                                                          
    14.05.42 Gulf of Mexico    
    03.10   Surfaced.  Course for the connecting route Ship Shoal and Trinity Shoal.  
    04.00 DA 9462    
      SW 1, Sea 2, partial overcast, Vis. changing good to medium    
    06.25   Steamer in sight abeam to starboard (45°T).  Range 3 nm.  Had bow left target angle 70°, matched speed and course of the enemy.  Steers general course 295° with half hourly 40° zig zags (275° and 315°) speed 11.5 knots.  
    08.00 DA 9422    
      SSW 2, Sea 2, partial overcast, Vis. greatly changing    
    09.04 DA 9185 Shot from tube 2, range 500 meters, target angle 85.5°, target speed = 12 knots, depth = 2 meters.  
      Marine phosphorescence, individual black clouds before the horizon  
      Miss.  Torpedo went exactly under the center of the tanker, without a hit.  Running track  is easily recognized in the marine phosphorescence.  
        While turning away from the tanker am seen and fired at with stern cannon.  
    09.09   Crash dive, so as not to get hit.  
        Steamer transmits:  
        "U-boat in 2839N, 9120W.", and sends bearing signals.  It was the 9200 GRT tanker "EASTERN SUN" proceeding in ballast.  
    09.35   Surfaced and pursued in general direction 295°.  
    10.48   Tanker again in sight bearing 285°T.  Range 6 nm.  
    11.37 DA 9171 Shot from tube 4, range 1000, target speed = 11 knots, target angle right 95°, depth = 2 meters. (remained further away due to the cannon of the steamer)  
      SSW 2, Sea 1, starry clear sky, haze over the sea  
        Miss.  Surface runner.  
        Steamer reduces speed.  Turned away to shoot with the stern tubes because I have no more torpedoes in the bow.  
    11.38   Shot from tube 5, range 1200 meters, target speed = 5 knots, target angle right 95°, depth = 2 meters.  
        Miss.  Circle runner.  Both running tracks were easily distinguished in the marine phosphorescence.  
           
           
           
Sun and Moon Data 13.05.42
Sun and Moon Data 14.05.42
 
- 41 -
 
           
           
           
    continued      
    14.05.42   Tanker turns away and transmits:  
        "Attacked by U-boat, in 2848N, 9151W 2 torpedoes passed ahead."  
        Afterwards he send bearing signals.  
        I cannot engage the tanker.  I cannot attack with my 3.7 cm and 2 cm.  That would mean putting the boat at risk recklessly, when I know the tanker is armed and alerted. After the experience gained so far with the G 7 A, I have no further trust in the last torpedo remaining on board.  Before shooting it I must check it again. To shoot it at this target immediately, is senseless. (The torpedo was later a circle runner, though it was all checked perfectly again.)  I must therefore let the tanker go as frustrating as that is.  Pursuit broken off and set off to the south to reach deeper water at the beginning of brightness.  Am in depth 24 meters.  
    12.00 DA 9171 Day's run:   119 nm, of which       77 nm,     42 nm  
      SSW 2-3, Sea 1, nearly fully overcast, Vis. 6 nm Total of:     5828  " ,        "        5373  "  ,   455  "  .  
    13.00   Dived to give the crew some peace, and after the events of the night to escape the expected intensified air.  While submerged thoroughly regulated the last G 7 A again, meets all requirements.  
    16.00 DA 9177    
    20.00 DA 9414 Additionally the patient was newly bandaged.  Health good, wound no longer festers, +37.8°C.  
    24.00 DA 9441    
                                                          
    15.05.42 Gulf of Mexico    
    03.18   Surfaced.  Course just off the Tortugas.  I hope to find a shooting opportunity there for my last torpedo.  
    04.00 DA 9471    
      SW 2, Sea 2, overcast, Vis. medium    
    04.10 - 05.03   Outgoing Radio Message 0058/15  
        1.)  13 May square DA 9194 day 3 miss on "GULF PRINCE" range 300 meters.  Was noticed during the attack.  Torpedoes outmaneuvered.  First torpedo a surface runner, the others not observed.  25 minutes later air at the location for all passing steamers.  
           
           
           
Sun and Moon Data 14.05.42
Sun and Moon Data 15.05.42
 
- 42 -
 
           
           
           
    continued      
    15.05.42   14 May square DA 9171 night 3 miss in 2 attacks on "EASTERN SUN".  Certain data.  Range 500-800 meters.  One exact center under run, one surface runner, one circle runner.  All G 7 A.  
        After first approach fired at by stern cannon.  Pursuit broken off because of out of artillery ammunition and to check the last torpedo one more time.  
        2.)  At Ship Shoal in 20-30 meters water regular tanker traffic, nights with hazy weather nothing seen.  Southeast of Ship Shoal buoy large fishing fleet.  
        3.)  Ship Shoal light and buoy not seen with hazy weather.  
        4.)  Still 110 cbm.  
        5.)  SSW 2, 1010 mb, +25°C.  
        6.)  Patient is well, +38°C.  
        7.)  Up to now 8 steamers of 45834 GRT.  
                                                                   Schacht.  
    08.00 DA 9488    
      SE 2, Sea 2, overcast, Vis. medium    
    12.00 DA 9738 Day's run:   119 nm, of which       72 nm,     47 nm  
      SSE 2, Sea 1, overcast, summer lightening Total of:     5947  " ,        "        5445  "  ,   502  "  .  
    16.00 DA 9849    
      S 3, Sea 2, few clouds, Vis. 8 nm, hazy horizon    
    20.00 DA 9894    
      SE 3, Sea 3, overcast, hazy horizon, Vis. 8 nm    
    23.00   Abeam to port (bearing 20°T) a steamer comes in sight out of a breaking up rain squall.  Distance 5 nm.  Turned away and attempted at GF to maneuver ahead however cannot get ahead.  Because the visibility improving, ran along on the surface at AK.  Steamer notices me, turns away and transmits:  
        "SSS from "AMAPALA" 2630N, 8910W a U-boat is pursuing us."  
        Because am out of 10.5 cm ammunition, will attempt to stop with 3.7 cm.  However the steamer increases speed and transmits:  "U-boat shooting."  
        To stop the steamer as quickly as possible headed directly for the steamer and used E-supplement with the diesels.  
        Because the 3.7 cm cannot shoot ahead, brought light machine guns to the forward edge of the bridge and continued firing at the steamer.  As later noted when reaching the steamer, he has received numerous hits on the bridge.  
        The distance hardly decreases.  The steamer radioed his position constantly and sends bearing signals.  Did not give up pursuit because since with the  
           
           
Sun and Moon Data 15.05.42
 
- 43 -
 
           
           
           
    continued      
    15.05.42   breaking up of a northerly with poor visibility gloomy rainy weather there is the hope that the launched U.S.A. aircraft will not find us  
    23.57   Am getting appreciably closer.  Steamer transmits to New Orleans, "Aircraft hurry, was shot."  
        Sheered 20° off so that I can also bring the 3.7 and 2 cm into operation.  After a few 3.7 cm shots notice that the steamer has stopped, therefore ceased fire.  
    24.00 DL 2211 Allowed the crew to leave and maneuvered the boat abeam for a coup de grâce.  
      SSE 3, Sea 3, overcast, heavy rain, Vis. very bad  
                                                          
    16.05.42 Gulf of Mexico    
    00.18   Shot from tube 6, range 600 meters, depth = 2 meters, target speed = 0, target angle 90°.  
        Miss.  Circle runner.  That was the last G 7 A, was again checked thoroughly and had met all requirements.  As a precaution had this torpedo set at only 30 knots, since I assumed that perhaps the higher speed of 40 knots may have been the reason for the failures. But even that did not help. Now I see the other G 7A misses in a different light.  
        Went to one of the lifeboats of the steamer and took it in tow to board the steamer with its help (the Swell was too heavy for bringing out our own dinghy).  Because the lifeboat took on two leaks in a short time, abandoned the attempt.  
        Went close to the steamer.  There the Second Watch Officer, Ltn.z.S. Scherraus and the Control Room Mate Maschinist Tornow swam over to the steamer to open the hull valves and sink the steamer.  
    01.41   Crash dive for approaching bomber, range 2500 meters, altitude 100 meters.  Type Douglas DB 380 Digby. [DB-18]  
        5 aircraft bombs at depth 40-70 meters.  No damage.  
    02.30   Went to periscope depth.  Steamer still floats, apparently without any difference.  
        The aircraft circles the steamer.  
        Remained in the vicinity of the steamer.  Consider as follows: From previous experience the aircraft can be expected to fly to home after dark.  I hope that my soldiers will then  
           
           
           
Sun and Moon Data 15.05.42
Sun and Moon Data 16.05.42
 
- 44 -
 
           
           
           
    continued      
    16.05.42   sink the steamer and will stay on a raft in the vicinity of the sinking location.  Then I want to surface in the lee of the steamer to take the two on board again.  The aircraft flew around the steamer until shortly after dark, most recently with set navigation lights. Then it suddenly disappeared.  Had given sinking order by firing with machine guns just ahead of the steamer  
    04.00 DL 2211 when later the deck lights of the steamer illuminated.  This was the signal from my soldiers that all is ready.  In reality it was the automatic switching on of emergency lighting, because the generators of the sinking steamer had already been submerged.  
      S 3, Sea 3, overcast, dark night  
    04.13   Surfaced before the bow of the steamer, where the sea lay completely in the shadow and ran into the lee of the steamer.  
    05.00   There after a short search found the sinking commandos drifting on a raft and took them on board again.  The sinking commandos brought the papers of the steamer, among them the zig zag plan.  It was the 4148 GRT steamer "AMAPALA" of the Standard Fruit and Steam Ship Company, proceeding under the Honduras flag.  
        The Captain, who had been sitting in a boat alongside at about 00:30 hours, told me he did not know that Germany was at war with Honduras or why his ship was to be sunk.  I pointed out to him that he had requested U.S. aircraft against me.  He said he had orders to do it.   I then said that I had orders to sink his ship.  
    05.10   The steamer had already settled up to the over deck.  Because a speedy sinking was accepted with certainty (the sinking commandoes had the removed the entire bottom valve cover) came to course for the Florida Straits.   A further stay at this location seemed unwise to me.  
    06.35   Lights of the steamer suddenly vanished.  Probably the steamer had sunk.  
    07.20   Outgoing Radio Message 0426/16  
        16 May square DL 2211 "AMAPALA" halted after 2-hour pursuit with light machine guns.  Ato coup de grace was a circle runner.  Sank by opening the hull valves.  Return transit.  Total 50002 GRT.  Still 98 cbm.  S 3, 1012 mb, +26°C, Patient is well, +37°C.  
                                                                   Schacht.  
    08.00 DL 2231    
      S 3, Sea 3, nearly completely overcast, hazy horizon.    
           
           
           
Sun and Moon Data 16.05.42
 
- 45 -
 
           
           
           
    continued      
    16.05.42      
    08.50   Outgoing Radio Message 0653/16  
        On board "AMAPALA" the following zig zag plan was found.  Course changes every 5 minutes:  
        0, 20, 10, 0, 350, 340, 0, 340, 350, 0, 10, 20, 0, 340, 350, 0, 10, 20, 0, 20, 10, 0, 350, 340.  Then again from the top.  
                                                                   Schacht.  
    10.03   Incoming Radio Message 0935/6  
        To Schacht.  Very well done.  
    12.00 DL 2321 Day's run:    179 nm, of which    171 nm,       8 nm  
      S 2-3, Sea 1, nearly completely overcast, Vis. 9 nm Total of:     6126  " ,        "        5616  "  ,   510  "  .  
    16.00 DL 3146    
      ENE 2, Sea 1, nearly completely overcast, Vis. 10 nm    
    20.00 DL 3279    
      NE 2, Sea 1, cloudless, Vis. 15 nm    
    24.00 DL 3641    
      NNE 2, Sea 1, few clouds, Vis. 15 nm    
                                                          
    17.05.42 Gulf of Mexico    
    04.00 DL 3696    
      NE 1, Sea 1, few clouds, Vis. good    
    08.00 DM 1739    
      NE 1, cloudless, Vis. good    
    12.00 DM 1891 Day's run:    292 nm, of which    292 nm,       0 nm  
      ENE 1, Sea 0, cloudless, Vis.  15 nm Total of:     6418  " ,        "        5908  "  ,   510  "  .  
    12.50 - 13.09   Test dive.  
    13.25 DM 1896 Steamer in sight bearing 200°T (abeam to starboard).  As well had course for the Florida Straits.  For the time being ran on the surface, hoping that he might not see.  
    13.28   Steamer in sight bearing 190°T.  
    13.30   Steamer in sight bearing 170°T.  
        Both have course for the Florida Straits.  
    13.40   Was sighted.  A steamer radio call sign "WUVK" turns away and transmits:  "U-boat in sight, 40 nm southwest of Rebecca Shoal."  
        After at most 1/2 hour an aircraft will be there.  Submerged In order to prevent my location from being exactly determined dived to proceed submerged at depth A -50 meters.  With this abundance of steamers I cannot get further by day on the surface.  
           
Sun and Moon Data 16.05.42
Sun and Moon Data 17.05.42
 
- 46 -
 
           
           
           
    continued      
    17.05.42      
    14.48   Propeller sounds bearing 318°R (78°T), 106 RPM.  
    15.04   Propeller sounds disappeared in 285°R (45°T).  
        It is probably a steamer that proceeds to the west under the coast.  
    16.00 DM 1974    
    16.02   Boat was over flown by an aircraft from port astern (210°R).  The sound shifted to 50°R.  A short time later detonation of 2 depth charges in the general vicinity.  Went deep (depth A +55 meters).  The 2 next depth charges were still closer, seemed to lie over the boat (after surfacing on the over deck large metal splinters from aircraft bombs or depth charges were found).  No significant damage.  By moving to greater depths (in doing so the boat slipped to depth A +110 meters) by hooking and suppressing all noise sources, including the gyro compass, the enemy is shaken off.  
    17.25   Enemy heard for the last time in 130°R.  Further depth charges are more and more distant.  
    18.15   The last (10th) apparently only scare depth charges.  The Americans have good sound locating but are not persistent in the pursuit.  
    20.00 DM 1979    
    21.30   After repairing the damage went higher slowly to pump.  After the first depth charges had flooded to get deep quickly.  Additionally I had taken on a few tons of water while deep.  
    22.00 DM 4311 Went to periscope depth.  No vessels are seen.  A Consolidated circles in the vicinity.  
    23.05   Went to depth A -50 meters, because the aircraft comes directly towards me.  Had some time ago made an oil spill while pumping.   Therefore, once again remained submerged for some time.  
    24.00 DM 4311    
                                                          
    18.05.42 Florida Straits    
    00.30   Went to periscope depth, nothing seen, pumped again.  
    02.41   Surfaced at the beginning of twilight and continued transit of the Florida Straits on the surface.  
    04.00 DM 4336 Determined that a number of the empty pressure-proof over deck containers for 10.5 cm ammunition were crushed.  
      ENE 1, Sea 1, few clouds, Vis. good    
           
Sun and Moon Data 17.05.42
Sun and Moon Data 18.05.42
 
- 47 -
 
           
           
           
    continued      
    18.05.42      
    09.17   Outgoing Radio Message 0329/18  
        17 May morning square DM 1893, 3 steamers course east, 1 steamer course west.  From a U-boat Warning transmitted 2 and one half hours later depth charge pursuit.  Forced to remain submerged until darkness by air.  
                                                                   Schacht.  
    08.00 DM 279x    
      ESE 2, Sea 2, few clouds, Vis. good    
    09.16   A minute long bright light shine below the horizon bearing 210°R (280°T) as if from a searchlight, possibly night aircraft.  
    12.00 DM 2838 Day's run:    190 nm, of which    158 nm,      32 nm  
      E 2, Sea 1, few clouds, Vis. good Total of:     6608  " ,        "        6066  "  ,   542  "  .  
    13.00 DM 2911 Crash dive for aircraft bearing 340°R (20°T).  Approximately center flight, altitude 200 meters, range 5000 meters.  Possibly a reconnaissance aircraft in the direction of the Santaren Channel.  
    14.00   Went to periscope depth.  Nothing seen.  
    15.00   Surfaced.  
    15.14 DM 2679 Dived for aircraft, directly ahead. (40°T) target angle 90°, course about 130°, range 6000 meters.  
        Aircraft bomb just below.  The aircraft seemed to be a stationary watch here.  With the prevailing weather (partly cloudy) I must expect that I will be surprised again by aircraft.  While submerged the current brings in addition to my own speed at least 3 knots.  
    16.00 DM 2657    
    20.00 DM 2622    
    20.36 DM 2622 3 distant detonations like from depth charges.  
    22.00   Went to periscope depth.  
    22.30 DM 2385 Again went to depth A -30 meters because a sea plane circles over me.  
    24.00 DM 2355    
                                                          
    19.05.42 Florida Straits    
    02.11   Surfaced at the beginning of twilight and transited northward through the Florida Straits.  
    04.00 DM 2322 The lighthouses shine as in peacetime.  The best way for a boat far offset from the coast to navigate are the lights of airfield beacons because they can be seen the furthest.  
      E 2, Sea 1, partial overcast, Vis. good  
           
           
           
Sun and Moon Data 18.05.42
Sun and Moon Data 19.05.42
 
- 48 -
 
           
           
           
    continued      
    19.05.42      
    05.45 DB 9847 Off Lake Worth (230°T) an aircraft circles night flying with 2 searchlights.  Avoided on the surface.  
    and 06.05    
    08.00 DB 9816    
      E 2, Sea 3, partial overcast, Vis. 12 nm    
    09.10 DB 9587 Crash dive for aircraft, that flies directly towards from 80°T with set position lights.  
    09.38   Surfaced.  Nothing more seen of the aircraft.  
    12.00 DB 9561 Day's run:    231 nm, of which    147 nm,     84 nm  
      E 2-3, Sea 1-2, few clouds, Vis. 12 nm Total of:     6839  " ,        "        6213  "  ,   626  "  .  
      Steered the Great Circle via 28°N 79°W, 39°30'N, 47°W.  
    16.00 DB 9613    
      E 3, Sea 2, few clouds, Vis. 15 nm    
    20.00 DB 9369    
      NE 2, Sea 2, few clouds, Vis. 15 nm    
    24.00 DC 7129    
      NE 2-3, Sea 2, ENE-Swell 1, Vis. 15 nm    
                                                          
    20.05.42 Western Atlantic    
    01.03   Blew main ballast and reserve fuel oil tanks 3 and 6.  
    04.00 DC 4876    
      ENE 3, Sea 2, partial overcast, Vis. good    
    08.00 DC 4866    
      E 3, Sea 3, partial overcast, Vis. good    
    12.00 DC 4929 Day's run:    278 nm, of which    278 nm,      0 nm  
      E 3, Sea 1-2, partial overcast, Vis. 10 nm Total of:     7117  " ,        "        6491  "  ,   626  "  .  
    14.00   Port diesel out of service for 14-1/2 hours due to a leak in the number 2 cylinder head, re-packing was necessary.  
    16.00 DC 4693    
      E 3, Sea 2, partial overcast, Vis. 15 nm    
    20.00 DC 5451    
      E 3, Sea 2, few clouds, Vis. 15 nm    
    24.00 DC 5431    
      E 2, Sea 1, few clouds, Vis. 15 nm    
                                                          
           
Sun and Moon Data 19.05.42
Sun and Moon Data 20.05.42
 
- 49 -
 
           
           
           
           
    21.05.42 Western Atlantic    
    04.00 DC 5271    
      ESE 1, Sea 1, partial overcast, Vis. good    
    04.30   Port diesel again in service.  
    08.00 DC 5229    
      ESE 2, Sea 2, few clouds, Vis. good    
    12.00 DC 2973 Day's run:    209 nm, of which    209 nm,      0 nm  
      E 2-3, Sea 2, few clouds, Vis. 10 nm Total of:     7326  " ,        "        6700  "  ,   626  "  .  
    13.53 - 14.23   Test dive.  
    16.00 DC 2962    
      E 4, Sea 4, light Swell, partial overcast, rain showers, Vis. changing 5-10 nm    
    20.00 DC 3722    
      E 3, Sea 3, partial overcast, Vis. 15 nm    
    24.00 DC 3549    
      E 3, Sea 2, Swell 1, nearly completely overcast, Vis. 12 nm    
                                                          
    22.05.42 Western Atlantic    
    04.00 DC 3539    
      ENE 4, Sea 3, overcast, rain showers, Vis. 3 nm    
    08.00 DC 3389    
      NE 4, Sea 4, overcast, Vis. 2 nm    
    12.00 DD 1157 Day's run:    270 nm, of which    268 nm,      2 nm  
      ENE 4, Sea 3, Swell 2, overcast, rain showers, Vis. changing up to 3 nm Total of:     7596  " ,        "        6968  "  ,   628  "  .  
    16.00 DD 1163    
      E 5, Sea 4, Swell, overcast, rain showers, Vis. 3-8 nm    
    20.00 DD 1226    
      EbyS 5, Sea 5, overcast, Vis. 6 nm    
    24.00 CB 8776    
      SEbyE 5, Sea 3-4, SE-Swell 2-3, overcast, Vis. bad    
                                                          
           
Sun and Moon Data 21.05.42
Sun and Moon Data 22.05.42
 
- 50 -
 
           
           
           
           
    23.05.42 Western Atlantic    
    04.00 CB 8768    
      SSE 4, Sea 4, Swell, overcast, rain showers, Vis. bad    
    08.00 CB 8828    
      SE 5, Sea 5, overcast, Vis. bad    
    12.00 CB 8911 Day's run:    241 nm, of which    241 nm,      0 nm  
      SSE 5-6, Sea 3-4, ESE-Swell 2-3, overcast, heavy rain showers, Vis. bad Total of:     7837  " ,        "        7209  "  ,   628  "  .  
    13.02 - 1326   Test dive.  
    16.00 CB 8688    
      S 5, Sea 4, SE-Swell 4, partial overcast, Vis. 10 nm    
    20.00 CB 8693    
      S 4, Sea 4, SE Swell, partial overcast, Vis. 12 nm    
    23.38   Drifting red lighted buoy abeam 6 nm to starboard.  Due to Sea did not shoot.  
    24.00 CB 9457    
      SSE 2-3, Sea 2-3, SE-Swell 3, nearly completely overcast, Vis. 12 nm    
                                                          
    24.05.42 Western Atlantic    
    04.00 CB 9462    
      SSW 4, Sea 5, SE-Swell, rain shower, Vis. changing from 2-3 nm    
    08.00 CB 9518    
      SSW 3, Sea 3, overcast, rain shower, Vis. changing 4-6 nm    
    12.00 CB 9523 Day's run:    162 nm, of which    161 nm,       1 nm  
      SbyE 3, Sea 2-3, SSE-Swell 2, nearly completely overcast, Vis. 10 nm Total of:     7999  " ,        "        7370  "  ,   629  "  .  
    13.45   Large cotton bale passed abeam to starboard.  
    16.00 CB 9377    
      SE 3, Sea 3, Swell, partial overcast, Vis. 10 nm    
    20.00 CB 9383    
      SE 3, Sea 3, Swell, partial overcast, Vis. 12 nm    
    20.15 - 20.40   Put the boat before the sea (0°T) to lay quietly to bandage the patient.  
    24.00 CC 7145    
      SSW 3, Sea 1, S-Swell 1, partial overcast, Vis. 15 nm    
                                                          
           
           
Sun and Moon Data 23.05.42
Sun and Moon Data 24.05.42
 
- 51 -
 
           
           
           
           
    25.05.42 Western Atlantic    
    04.00 CC 7135    
      SSW 3, Sea 2, S-Swell, partial overcast, Vis. good    
    08.00 CC 4887    
      SSW 2, Sea 2, cloudless, Vis. good    
    11.55 - 12.11   Test dive, afterwards blew main ballast and reserve fuel oil tank 4.  
    12.00 CC 4893 Day's run:    206 nm, of which    205 nm,       1 nm  
      SSW 2-3, Sea 2, few clouds, Vis. 12 nm Total of:     8205  " ,        "        7575  "  ,   630  "  .  
    16.00 CC 4964    
      S 3, Sea 3, few clouds, Vis. 15 nm    
    20.00 CC 5729    
      SbyW 2, Sea 2, nearly completely overcast, Vis. 15 nm    
    24.00 CC 5588    
      SbyW 2, Sea 1-2, nearly completely overcast, Vis. 15 nm    
                                                          
    26.05.42 Western Atlantic    
    04.00 CC 5673    
      SbyW 2, Sea 1, partial overcast, Vis. good    
    08.00 CC 6445    
      SSW 1, Sea 1, partial overcast, Vis. good    
    12.00 CC 6514 Day's run:    300 nm, of which    300 nm,       0 nm  
      SW 2, Sea 1, nearly completely overcast, Vis. 14 nm Total of:     8505  " ,        "        7875  "  ,   630  "  .  
    16.00 CC 6295    
      SW 3, Sea 2, partial overcast, Vis. 15 nm    
    20.00 CC 6356    
      SW 3, Sea 3, nearly completely overcast, Vis. 15 nm    
    24.00 CD 4121    
      WSW 2, Sea 1-2, partial overcast, Vis. 14 nm    
                                                          
    27.05.42 Western Atlantic    
    04.00 CD 1873    
      WSW 2, Sea 1, overcast, Vis. 6 nm    
    08.00 CD 1941    
      WSW 2, Sea 2, overcast, Vis. 5 nm    
    09.28 - 09.52   Test dive.  
           
           
Sun and Moon Data 25.05.42
Sun and Moon Data 26.05.42
Sun and Moon Data 27.05.42
 
- 52 -
 
           
           
           
    continued      
    27.05.42      
    11.00   Incoming Radio Message 0929/27  
        Return harbor for Schacht is Lorient.  
    12.00 CD 1931 Day's run:    279 nm, of which    277 nm,       2 nm  
      WSW 2, Sea 1, overcast, Vis. 8 nm Total of:     8784  " ,        "        8152  "  ,   632  "  .  
    16.00 CD 2485    
      WSW 3, Sea 2, partial overcast, Vis. changing 8-14 nm    
    20.00 CD 2557    
      SSW 2, Sea 2, Swell, partial overcast, Vis. 12 nm    
    21.15   Incoming Radio Message 2001/27  
        Schacht report weather tomorrow between 01.00 and 05.00 hours.  
    24.00 CD 2643    
      SW 2, Sea 1, W-Swell 0-1, nearly completely overcast, Vis. 12 nm    
                                                          
    28.05.42 Atlantic north of the Azores    
    02.06   Outgoing Short Signal weather report  
        40°W, 42°N, steady, 1026 mb, +20°C, SW 2, Stratocumulus, 8/10, Sea 1, Vis. over 10 nm, Swell.  
                                                                   U-507.  
    04.00 CD 3415    
      WSW 1, Sea 1, light N-Swell, overcast, Vis. good, horizon lightly hazy    
    08.00 CD 3275    
      E 1, Sea 0, light NNW-Swell, partial overcast, Vis. good, horizon somewhat hazy    
    12.00 CD 3347 Day's run:    294 nm, of which    294 nm,      0 nm  
      SSW 1, Sea 0-1, long NNW-Swell, partial overcast, Vis. 14 nm Total of:     9078  " ,        "       8446  "  ,   632  "  .  
    16.00 CD 3363    
      SSW 2, Sea 0-1, NNW-Swell 2, overcast, Vis. 12 nm    
    18.15 and   Passed an empty barrel to port 300 meters away.  
    19.42      
    20.00 CE1132    
      SSW 2, Sea 1, NNW-Swell, overcast, Vis. 12 nm    
    20.10   Incoming Radio Message 1815/28  
        Schacht 08.00 tomorrow switch to Ireland Circuit.  
    24.00 BD 8784    
      S 3, Sea 2-3, NNW-Swell, overcast, rain shower, Vis. 8 nm    
                                                          
           
           
Sun and Moon Data 27.05.42
Sun and Moon Data 28.05.42
 
- 53 -
 
           
           
           
           
    29.05.42 Atlantic north of the Azores    
    04.00 BD 8847    
      S 3, Sea 2, N-Swell, overcast, dust rain, Vis. 3000 meters    
    08.00 BD 8861    
      SbyW 3, Sea 3, N-Swell, overcast, dust rain, Vis. bad 1000-2000 meters    
    09.52 - 10.10   Test dive.  
    12.00 BD 8922 Day's run:    292 nm, of which    291 nm,       1 nm  
      SSW 2-3, Sea 2, overcast, dust rain, hazy, Vis. 1000-2000 meters Total of:     9370  " ,        "       8737  "  ,   633  "  .  
    14.40   Passed an empty oil barrel to starboard 200 meters away.  
    16.00 BD 9475    
      SW 3, Sea 3, overcast, dust rain, hazy, Vis. 3000-5000 meters    
    16.30   Incoming Radio Message 1036/29  
        Convoy course south, flank escort by destroyer, square BE 8371.        Bleichrodt.  
        Did not operate on convoy, because am out of torpedoes.  
    20.00 BD 9469    
      SW 3, Sea 3, overcast, dust rain, Vis. 800 meters    
    22.00   Incoming Radio Message 2009/29  
        Schacht give weather tomorrow between 01.00 and 05.00 hours.  
    24.00 BD 9553    
      SSW 1-2, Sea 1, overcast, hazy, Vis. 600-1000 meters    
                                                          
    30.05.42 Atlantic north of the Azores Due to bad visibility at night the 2 cm kept ready.  
    02.12   Outgoing Short Signal weather report  
        45°N, 27°W, steady, 1023 mb, +16°C, SSW 2, fog, Vis. up to 1/2 nm, 10/10 overcast, low SW-Swell.  
                                                                   U-507.  
    04.00 BD 9613    
      SSW 1, Sea 1, light Swell, fog, Vis. 500 meters    
    08.00 BE 7174    
      SWbyW 1, Sea 1, light Swell, fog, Vis. 500 meters    
    12.00 BE 7167 Day's run:   286 nm, of which    286 nm,       0 nm  
      SSW 1, Sea 1, overcast, hazy, Vis. 1-2 nm Total of:     9656  " ,        "       9023  "  ,   633  "  .  
           
Sun and Moon Data 29.05.42
Sun and Moon Data 30.05.42
 
- 54 -
 
           
           
           
    continued      
    30.05.42      
    16.00 BE 7255    
      SW 2, Sea 2, overcast, hazy, Vis. 8 nm    
    20.00 BE 7345    
      SW 1-2, Sea 1, overcast, Vis. 10 nm    
    24.00 BE 7363    
      SWbyS 1, Sea 0-1, overcast, Vis. 10 nm    
                                                          
    31.05.42 Atlantic north of the Azores    
    04.00 BE 8137    
      SW 1, Sea 1, overcast, Vis. 5 nm    
    08.00 BE 8225    
      SW 1, Sea 1, overcast, Vis. 10 nm    
    09.01 - 09.19   Test dive.  
    12.00 BE 8312 Day's run:   296 nm, of which    295 nm,       1 nm  
      SWbyS 1, Sea 1, overcast, Vis. 10 nm Total of:     9952  " ,        "       9318  "  ,   634  "  .  
    16.00 BE 5999    
      SW 1, Sea 1, overcast, Vis. 12 nm    
    16.20   Passed an empty gasoline barrel 400 meters to starboard.  
    19.15 BE 6785 Passed an outbound German U-boat (type 7 C) 3 nm to port.  Recognition signals exchanged.  
    20.00 BE 6794    
      SW 1, Sea 0-1, overcast, Vis. 12 nm    
    24.00 BE 6881    
      SWbyS 1, Sea 0-1, overcast, Vis. 5 nm    
                                                          
    01.06.42 Atlantic north of the Azores    
    04.00 BE 6948    
      SE 1, Sea 0-1, overcast, Vis. changing 2000-6000 meters    
    06.00   Main ballast tanks 2, 3 and 6 pre flooded to be able to crash dive quickly.  
    08.00 BE 6969    
      SE 1, Sea 0, overcast, Vis. 12 nm    
    08.02 BE 6969 Crash dive for 2-engined land-based aircraft type not recognized, bearing 10° (290°R), range 2000, altitude 1000 meters.  
        3 aircraft bombs at depth A -55 to A -50 meters.  No significant damage.  
           
           
Sun and Moon Data 30.06.42
Sun and Moon Data 31.06.42
Sun and Moon Data 01.06.42
 
- 55 -
 
           
           
           
    continued      
    01.06.42      
    12.00 BF 4748 Day's run:    254 nm, of which   246 nm,       8 nm  
        Total of:    10206  " ,        "       9564  "  ,   642  "  .  
    16.00 BF 4749    
    20.00 BF 4755    
    22.57   Surfaced, proceeded on the surface.  
    24.00 BF 4764    
      ESE 2, Sea 1, cloudless, Vis. 6 nm    
                                                          
    02.06.42 Bay of Biscay    
    04.00 BF 4851    
      E 2, Sea 1, few clouds, Vis. 8 nm    
    05.07   Outgoing Short Signal  
        Position 48 hours off meeting point with escort.  
                                                                   U-507.  
    05.36   Incoming Radio Message 0524/2  
        Schacht positioned on 4 June 05.00 hours off return harbor.  
    06.09   Dived to proceed submerged in accordance with Standing B.d.U. Order No. 13.  
    08.00 BF 4838    
      EbyS 2, Sea 2, cloudless, Vis. 12 nm    
    12.00 BF 4917 Day's run:    124 nm, of which      73 nm,    51 nm  
        Total of:    10330  " ,        "       9637  "  ,   693  "  .  
    15.10   Incoming Radio message 1221/2  
        For U-507 escort positioned on 4 June at 06.00 at Luzie 2.  
                                                                   2. U. Flottille.  
    16.00 BF 4915    
    20.00 BF 4924    
    22.52   Surfaced.  Continued on the surface.  
    23.20 BF 4923 2 lights from fishing vessels ahead to starboard and port (90°T).  Avoided on the surface.  
    24.00 BF 4931    
      EbyS 2-3, Sea 1-2, cloudless, Vis. 6 nm    
                                                          
    03.06.42 Bay of Biscay    
    04.00 BF 5485    
      ESE 2, Sea 1, few clouds, Vis. 6 nm, bright moonshine    
    06.00   Dived to proceed submerged.  
           
Sun and Moon Data 01.06.42
Sun and Moon Data 02.06.42
Sun and Moon Data 03.06.42
 
- 56 -
 
           
           
           
    continued      
    03.06.42      
    08.00 BF 5493    
      ESE 2, Sea 1, cloudless, Vis. 12 nm    
    11.30   Reached the 200-meter line.  Until surfacing back and forth in position.  
    12.00 BF 5548 Day's run:    134 nm, of which      84 nm,    50 nm  
        Total of:    10464  " ,        "       9721  "  ,   743  "  .  
    16.00 BF 5548    
    17.45   Incoming Radio Message 1834/2  
        Entry route for Schacht is Bogenlampe, U-203 departs Lorient evening 3 June via Bogenlampe.  
    20.00 BF 5548    
    23.01   Surfaced on Route Bogenlampe headed for Point L 2.  
    24.00 NE 2, Sea 1, cloudless, Vis. good    
                                                          
    04.06.42 Bay of Biscay    
    01.55   Penmarch Lighthouse in sight bearing 12°T, 37 nm below the horizon.  
    03.32   Anti-aircraft fire directly ahead.  
    04.00 ENE 1, Sea 1, cloudless, Vis. good Pen Men (Ile Groix) in sight directly ahead (57°T) at 38 nm.  
    04.25   Anti-aircraft fire directly ahead (10.5 cm).  
    04.35   4 sailboats in sight to starboard in port, avoided on the surface.  
    06.10   Taken in convoy at L 2.  
    06.30   Passing report to MSS Pen Men.  
    08.00 ENE 1, Sea 0, cloudless, Vis. good    
    08.10   Made fast Lorient Arsenal.  
        Day's run:    123 nm, of which      93 nm,    30 nm  
        Total of:    10587  " ,        "       9814  "  ,   773  "  .  
                                                          
           
           
Sun and Moon Data 03.06.42
Sun and Moon Data 04.06.42
 
- 57 -
 
           
           
           
           
                Special Experiences.  
        1.)  The trade war in the Gulf of Mexico in particular at Tortuga and off the mouth of the Mississippi at the time seems particularly rewarding because numerous tankers and steamers run there, the defense however is still slight.  
        2.)  On all shipping routes off the north coast of Cuba and in the Gulf of Mexico by day continuous air surveillance.  In the Florida Straits also by night, with set position lights.  
        After U-boat Warning Reports and/or sinkings, aircraft are always at the location in a short time.  
        3.)  The Americans have first rate sound locating but are not persistent in pursuit.  
        4.)  Lighthouses on the north coast of Cuba, Mississippi mouth, Florida Straits burn as in peacetime.  In the Florida Straits when offset from the coast navigation by aircraft beacons is especially good, because they have a greater visual range than the navigation beacons.  
        5.)  Off the Mississippi mouth mostly hazy, no horizon.  Then aircraft are difficult to see.  Dirty river and brackish water gives good cover at periscope depth and bad sound conditions.  
           
        Duration of the patrol 62 days, during which distance covered:  
        10587 nm, of which 773 nm were submerged.  
           
        Sunk:  9 steamers of 49995 GRT.  
           
                                                          
           
           
           
           
           
           
           
           
           
           
           
 

Appendices to U-507's KTB - click on the text at left to proceed to the documents
Chart Track chart covering entire war patrol
Sketches Combat sketches
Radio Radio Log

 
 
     
     
                          Comments of the Befehlshabers der Unterseeboote  
 

On the Kriegstagebuch of "U-507" from 26.3 - 4.6.1942.

 
     
 
The Kommandant used the very numerous chances for success well and despite several missed shots, including perfect torpedo failures, achieved a very fine success.
 
     
     
 

Signed in draft: D  ö  n  i   t  z  .

 
          For correctness:  
            
  Leutnant z.S. and Adjutant  
     
     
 


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