U-557 - 1st War Patrol

Translation by Jerry Mason with help from Andi Forster

Departed
Date
Arrived
Date
Days at Sea
Kiel
13 May 1941
Lorient
10 July1941
59

 

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

Ships Attacked
Date
KTB Time
Position
Ship
Tons
Nationality
Convoy
29 May 41
20.42 - 21.29
55°09'N, 39°55'W
EMPIRE STORM
7,290
British
 HX-128
     
 Total = 7,290
   
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.

 

This KTB uses the depth notation "depth T = xx meters"  Under this scheme, the actual depth was twice the depth given after T = so for example, if the KTB entry read "depth T = 50 meters, the actual depth was 100 meters.  This was intended to hide the actual depth for security purposes. This notation was used from about January 1940 to December 1941.  In these KTBs, depths written without using "T =", for example "dived to depth 35 meters" were not so disguised.

 


 
 
           
           
           
           
           
                                        
           
           
                  K  r  i  e  g  s  t  a  g  e  b  u  c  h  
                = = = = = = = = = = = = = = = = =  
                                       of  
        U  n  t  e  r  s  e  e  b  o  o  t  e  s       " U  557  "  
        = = = = = = = = = = = = = = = = = = = = = = =  
                              (1st War Patrol)  
           
           
                Beginning:  13.2.41  (Commissioning)  
                Ending:       11.7.41  
                               
                       Kommandant:        Oberleutnant z.S.  P  a  u  l  s  s  e  n  
           
       
Distribution: 2 x O.K.M.  Skl. U
  1 x B.d.U. Op.
  1 x B.d.U. Org.
  1 x 1. U.-Flottille
  1 x Boot.
 
           
           
           
           
           
           
           
           
           
           
        © U-boat Archive 2023 - all rights reserved  
Click the flag to view the above page from the original German KTB
 
- 1 -
 
           
           
           
           
    13.02.41 Hamburg Commissioning.  
      Blohm und Voss,    
      Shipyard harbor    
           
    14.02. - 15.02.41       "          " Dry docked. Work on the N.S. system.  
         
    16.02.41       "          " Transit to Kiel.  Made fast alongside "LECH".  
         
    17.02. - 23.03.41 Kiel, Tirpitzmole Began U.A.K. testing.  
           
    24.02.41      
    14.00 Kiel Dry docked to ballast.  
           
    25.02.41      
    12.00 Kiel Undocked.  
           
    26.02. - 03.03.41 Kiel U.A.K. testing in Kiel harbor due to ice.  
           
    04.03. - 06.03.41 Baltic Transit to Gotenhafen with 24. U.-Flottille and ice escort.  
           
    07.03. - 11.03.41 Gotenhafen 8-hour AK cruise.  
        T.E.K. testing completed.  
           
    08.03.41      
    11.30 Gotenhafen Approach fog Training torpedo hit port side astern.  
           
    12.03. - 25.03.41 Danzig Neufahrwasser At the disposal of the 25. U.-Flottille.  Independent training and torpedo firing.  
           
    13.03. - 18.03.41 Danzig Schichau Werft Repairs to diving plane damage due to jamming.  Dent in the after ship from torpedo hit welded over.  
         
    26.03. - 03.04.41 Gotenhafen and Eastern Baltic At the disposal of the 27. U.-Flottille.  Tactical training.  
         
    03.04.41 Gotenhafen Artillery firing.  Transit to Rønne (Bornholm).  
         
    04.04.41 Bornholm Sound trial off Hasle.  Brief stops in Rønne morning and evening.  
           
    04.04. - 05.04.41 Baltic Transit to Kiel.  
           
    06.04. - 11.04.41 Kiel Final adjustments and overhaul Deutsche Werke.  Cessation of work as a result of damage to the shipyard by aircraft attack.  
           
           
 
 
- 2 -
 
           
           
           
           
    12.04. - 13.04.41 Baltic Transit to Königsberg.  
         
    14.04. - 06.05.41 Königsberg Completion of the remaining work at Schichau Königsberg.  
         
    05.05.41 Eastern Baltic Shipyard sea trial and deep diving test.  
         
    06.05. - 07.05.41 Baltic Transit to Kiel.  
         
    08.05. - 12.05.41 Kiel Equipping and repair of diesel compressor damage.  Degaussing and magnetic compass calibration.  
                                                          
    13.05.41 Kiel Tirpitzmole    
    13.30 NW 4-5, overcast, Vis. good Cast off for 1st war patrol together with U-66.  Equipped with 4 G 7a, 10 G 7e.  
    14.00 Holtenau Through the lock.  Transit through the Kaiser Wilhelm Canal.  
    16.00 Kaiser Wilhelm Canal Brief aircraft alarm.  Continued transit.  
    20.30 Brunsbüttel Koog Made fast inner harbor.  
                                                          
    14.05.41 Brunsbüttel Koog    
    12.15 N 1-2, overcast, Vis. good Cast off from the inner harbor.  Through the lock.  
      Elbe Down the Elbe in convoy of Sperrbrecher X.  
    18.30 Elbe Passed Elbe position I.  
        Transit on Route "Braun".  
    21.25 Southern North Sea At Point H released by Sperrbrecher X.  Began transit through Route "Blau".  Remained at 10 knots behind U-66.  
      NNW 1-2, Sea 2, overcast, Vis. good  
    24.00 AN 9515 2 x HF, course 340°.  
      NNE 3-4, Sea 3, partial overcast, occasionally bright moon    
                                                          
    15.05.41 Southern North Sea    
    04.00 AN 6638 Dived at dawn.  
      NNW 3-4, Sea 3, partial overcast Put the boat on the bottom in depth T = 25 meters. [actual depth 50 meters]  
    12.00 AN 6638 Day's run:  Surfaced    = 153 nm  
                         Submerged =  4.5 nm = 157.5 nm.  
    12.30 - 13.30 AN 6635 Surfaced for crash dive training, subsequently depth control training.  
      NW 3-4, Sea 3, partial overcast, Vis. good  
      Boat put on the bottom depth T = 25 meters. [50 meters]  
           
           
Sun and Moon Data 13.05.41
Sun and Moon Data 14.05.41
Sun and Moon Data 15.05.41
 
- 3 -
 
           
           
           
    continued      
    15.05.41      
    21.30 NNW 4, Sea 3-4, partial overcast, Vis. changing, rain squalls Surfaced.  Transit continued on the surface.  2 x HF, course 0°.  
        Difference between dead reckoning and actual position after a navigation fix 110°T, 5 nm  
                                                          
    16.05.41 North Sea    
    00.00 AN 6395    
    04.00 AN 3878    
      NNW 3, Sea 3, partial overcast, Vis. very good    
    05.00 AN 3872 Left the warning area.  Dived.  Proceeded submerged at depth T = 15 meters. [30 meters]  
    08.00 AN 3848    
    12.00 AN 3845 Day's run:  Surfaced     = 92 nm  
                         Submerged = 13.5 nm = 105.5 nm.  
    13.00 to AN 3818 Surfaced to ventilate the boat.  
    14.15   Continued submerged transit.  
    20.00 AN 3812    
    22.15 AN 3811 Surfaced.  Shortly after surfacing 2 aircraft (land-based aircraft) with westerly course observed in the periscope, course 355°, 12 knots.  
      WNW 1-2, Sea 2, lightly overcast, Vis. good  
    22.17   Radio Message 2141/16/60 received:  
        U-66, U-557 from B.d.U. exit north of the Faroes.  
                                                          
    17.05.41 Northern North Sea, Norway coast    
    00.00 AN 3544    
    04.00 AN 3434 I decide to remain on the surface from now, because the 4 hour nights are too short for a normal advance as well as to charge the battery.  
      NNW 1-2, Swell, partial overcast, Vis. good  
        Very slight air surveillance in the North Sea.  
        Course 310°, 14 knots.  
    07.40 AN 3141 Dived for aircraft.  Used the opportunity to work on the torpedoes.  
    11.00 AN 3117 Surfaced.  Surface transit, course 335°, 14 knots.  
      SW 1-2, Swell, lightly overcast, Vis. good    
    12.00 AN 4336 Day's run:  Surfaced     = 135 nm  
                         Submerged =   20 nm = 155 nm.  
    16.00 AN 2822    
    17.50 - 18.20 AN 2381 Dived for aircraft.  
    21.25 - 22.01 AF 7998 Dived for aircraft (Do 17).  Sighted drifting mine.  
           
Sun and Moon Data 15.05.41
Sun and Moon Data 16.05.41
Sun and Moon Data 17.05.41
 
- 4 -
 
           
           
           
    continued      
    17.05.41      
    23.00   Short Signal sent:  Have passed 60°50'N in the North Sea.  
                                                          
    18.05.41 Northern North Sea, north of the Shetlands    
    00.00 AF 7967 Diesel air compressor out of service.  Can no longer repair with on board means.  I believe that completion of the patrol is not endangered thereby.  
      WNW 1, Sea 1, overcast, Vis. good  
    04.00 AF 7676 Course 290°, 12 knots.  
      SSW 2, Sea 1, Swell, overcast, Vis. medium    
    07.00 North Sea    
      AF 7568 Drifting mine sighted.  
    07.35 - 09.35 AF 7567 Dived for test dive.  At the same time completed repair to cylinder I of the port diesel.  
    10.02 AF 7579 Dived for aircraft.  Remained submerged due to bad weather.  
      Vis. bad  
    12.00 AF 7555 Day's run:  Surfaced     = 247 nm  
      E 1, Sea 1, Swell, overcast, Vis. medium                  Submerged =     8 nm = 255 nm.  
    12.50   Surfaced.  
    13.50 AF 7554 Drifting mine sighted.  
    14.00 - 20.00   Starboard diesel out of service.  Fixed damage on the surface.  
    20.00 AF 7426    
      NNE, Sea 1, Swell, clear, Vis. very good    
                                                          
    19.05.41 North Atlantic    
    00.00 AF 7174    
      NNE 2-3, Sea 2, Vis. good, partial overcast    
    04.00 AE 9262    
    06.00   Faroe Islands in sight on the horizon bearing 180°.  Moved further off on northerly course.  
           
    08.00 AE 9242 Course 252°, 12 knots.  
      NW 1-2, Sea 1-2, partial overcast, Vis. good    
    12.00 AE 9157 Day's run:  Surfaced     = 246 nm  
                         Submerged =  1.5 nm = 247.5 nm.  
    16.00 AE 8397    
    20.00 AE 8491 Difference between dead reckoning and actual position after a navigation fix 60°T, 2 nm.  
      SW 5, Sea 4-5, overcast, Vis. good  
                                                          
    20.05.41 Atlantic, northwest of the Faroe Islands    
    00.00 AE 8558    
    04.00 AE 8547    
           
           
           
Sun and Moon Data 17.05.41
Sun and Moon Data 18.05.41
Sun and Moon Data 19.05.41
Sun and Moon Data 20.05.41
 
- 5 -
 
           
           
           
    continued      
    20.05.41      
    09.00 - 11.00 AE 8491 Dived for test dive.  Work on the torpedoes.  
      SSW 6, Sea 5, overcast, Vis. medium    
    12.00 AE 8484 Day's run:  Surfaced     = 214 nm  
                         Submerged =  3.4 nm = 217.4 nm.  
        Use of weapons is limited due to the sea state.  
        For the time being I do not operate on the convoy report received from U-94 at 16.55 hours on 19 May and the following contact keeper signals. The distance is still too great. My course of 248° almost brings me to him.  
    14.30 - 17.15 AE 8711 Dived due to bad visibility.  
      SSW 6, Sea 5-6, occasional fog, Vis. very bad    
    20.00 AE 7934    
      SSW 4-5, Sea 5, overcast, squalls, Vis. greatly changing    
                                                          
    21.05.41 Atlantic south of Iceland    
    00.00 AE 7942    
    06.30 - 10.12 AE 7883 Dived due to bad visibility.  
      SW 2, Sea 2-3, heavy W-Swell, fog    
    12.00 AE 7877 The distance to the reported "Kuppisch"-convoy still amounts to 540 nm.  I operate on it on course 270°, 12 knots.  
      SW 2-3, Sea 3-4, heavy W-Swell, overcast, Vis. greatly changing  
      Day's run:  Surfaced     = 149 nm  
                         Submerged =    3 nm = 162 nm.  
    16.00 AE 7787    
    20.00 AD 8991    
    21.40 AD 8988 Radio Message 2106/21/113 received with the order to occupy AK 51.  Because we are not to operate on the convoy to the north, I change course to 225°.  
                                                          
    22.05.41 North Atlantic    
    00.00 AL 1127    
      W 3-4, heavy Swell, overcast, Vis. changing    
    04.00 AK 3295    
    08.00 AK 3443 At ordered position report by Short Signal.  
    12.00 AK 3397 Day's run:  Surfaced     = 242 nm  
                         Submerged =   1.3 nm = 243.3 nm.  
           
           
Sun and Moon Data 20.05.41
Sun and Moon Data 21.05.41
Sun and Moon Data 22.05.41
 
- 6 -
 
           
           
           
    continued      
    22.05.41      
    13.15 - 18.30 WNW 5, Sea 5, partial overcast, squalls, Vis. changing Dived to work on the torpedoes and and to repair cylinder I of the port diesel.  Exhaust valve can not be removed.  Cylinder was placed out of service.  
    20.00

AK 2621

[AJ 6115 to AK 7215]

Radio Message 2050/22/148 received with orders to form a patrol line.  Course and speed temporarily maintained, because they lead approximately to the ordered position.  
        Course 225°, 12 knots.  
                                                          
    23.05.41 North Atlantic    
    00.00 AK 2679    
      WSW 4, Sea 5, overcast, squalls, Vis. greatly changing    
    04.00 AK 2764    
    08.00 AK 2915    
    12.00 AK 0163 Day's run:  Surfaced     = 210 nm  
      W 4-5, Sea 5, overcast, squalls, Vis. changing, frequently under 500 meters                  Submerged =      6 nm = 216 nm.  
      Up to now still not a single vessel sighted.  
    16.00 AK 0188    
    20.00 AK 5118 Course 245°, 10 knots.  
                                                          
    24.05.41 North Atlantic    
    00.00 AK 4358    
      W 4, Sea 3-4, overcast    
    04.00 AK 4289    
    08.00 AK 4521    
      Greatly freshening, W 6-7, Sea 5, squalls, Vis. medium    
    12.00 AK 4439 Course 270°.  
        Radio Message 0926/24/192 received, that assigns us a new position in the patrol line due to the falling out of U-109 and U-111.  
        Day's run:  Surfaced     = 178 nm  
                         Submerged =      0 nm = 178 nm.  
    13.00 - 16.00 AK 4429 Dived for test dive and to work on the torpedoes.  
      SW 7-8, Sea 7, squalls, Vis. good, lightly cloudy    
    19.30   Incoming Radio Message 1808/24/106 with report concerning the BISMARCK combat on 24 May.  
    20.00 AK 4417    
    21.23 AJ 6628 Incoming Radio Message 1613/24/199 and continuation (Officer Only) with orders to form patrol line from square AJ 6815 to square AJ 6895  
      W 8-9, Sea 9, overcast, Vis. medium  
        Headed for square AJ 6855.  Would have reached position by 05.30 hours.  
           
Sun and Moon Data 22.05.41
Sun and Moon Data 23.05.41
Sun and Moon Data 24.05.41
 
- 7 -
 
           
           
           
    continued      
    24.05.41      
    23.45 AJ 6658 Incoming Radio Message 2255/24/114 with orders to form patrol line from square AJ 6115 to square AK 7215  
        Because the old order did not apply instead it was ordered U-93, U-43, U-46, U-557, U-66, I steer for square AJ 6685.  U-46 back to my old position.  
        Course 180°, 7 knots.  
        For 4 days no further navigation fix!  
                                                          
    25.05.41 North Atlantic    
    00.30 AJ 6922 Back and forth in position in patrol line.  
      Wind calm    
    03.30   Incoming Radio Message 0246/25/119 with orders:  
        Course east.  
        Came to course 90° and initially to 7 knots.  
    08.00 AK 4713 Speed 12 knots.  
      SE 1, heavy W-Swell, overcast, Vis. good    
    12.00 AK 4812 Day's run:  Surfaced     = 182 nm  
                         Submerged =   5.5 nm = 187.5 nm.  
    16.00 AK 4597 Through Radio Messages received we share in the "BISMARCK" drama.  Unfortunately, we cannot help.  
    20.00 AK 4679    
    23.00   Radio Message 2232/25/143 with orders to form patrol line from AJ 6115 to AK 7215 cancelled.  
        Turned back on course 270°.  
                                                          
    26.05.41 North Atlantic    
    00.00 AK 4689 External main ballast and reserved fuel oil tanks II and IV converted to serve as ballast tanks.  
      SSW 2, Sea 2, W-Swell, overcast, Vis. medium to bad  
    04.00 AK 4677    
    07.00 AK 4598 Dived due to fog.  
    11.00 AK 4588 Surfaced.  
    12.00 AK 4587 Day's run:  Surfaced     = 120 nm  
      SW 2, Sea 2, overcast, fog                  Submerged =     6 nm = 126 nm.  
    13.20   Reported by Short Signal:  Still have half of my fuel oil.  
        Because I still have all of my torpedoes on board, I decide to report the current fuel inventory to prepare for a supply at sea.  
    13.25 AK 4579 Dived again due to fog.  
           
           
           
Sun and Moon Data 24.05.41
Sun and Moon Data 25.05.41
Sun and Moon Data 26.05.41
 
- 8 -
 
           
           
           
    continued      
    26.05.41      
    19.45 AK 4499 Surfaced.  Course 270°, 5 knots.  Headed for position in patrol line.  
    20.20 AK 4499 Incoming Radio Message 1842/26/170 with orders to be moving back and forth in patrol line from 22.00 hours.  Can not reach the ordered position before 04.00 hours on 27 May .  
    22.40   Incoming Radio Message 2121/26/179 with the report concerning inclusion of "U-111" in the patrol line.  
        Therefore I must head for AK 6935.  
                                                          
    27.05.41 North Atlantic    
    00.00 AK 4479    
      WSW 1-2, Swell, fog    
    04.00 AJ 6689 Reached patrol line.  Joined in the current course.  
        Running back and forth between square AJ 6689 and square AJ 6935.  
    12.00 - 15.45   Day's run:  Surfaced     = 115 nm  
                         Submerged =      9 nm = 124 nm.  
        Dived due to fog.  Visibility 100-50 meters.  
    17.15 - 23.20       "       "         "            "          "          "  
                                                          
    28.05.41 North Atlantic    
      SE 2-3, Sea 1-2, Swell, Vis. good Back and forth in position in patrol line.  
        Day's run:  Surfaced     = 55 nm  
                         Submerged =    9 nm = 64 nm.  
        Difference between dead reckoning and actual position after a navigation fix 170°T, 13 nm.  
        Position amended.  
                                                          
    29.05.41 North Atlantic Back and forth in position in patrol line  
    11.50   Incoming Radio Message 1116/29/178 with orders concerning forming new patrol line.  U-557 is not mentioned.  
    12.00 AJ 6689 Day's run:  Surfaced     = 90 nm  
                         Submerged =   0 nm = 90 nm.  
           
Sun and Moon Data 26.05.41
Sun and Moon Data 27.05.41
Sun and Moon Data 28.05.41
Sun and Moon Data 29.05.41
 
- 9 -
 
           
           
           
    continued      
    29.05.41      
    12.36   Incoming Radio Message 1116/29/178 (Officer Only) and follow up with orders concerning fuel oil supply in AJ 21.  
    13.30 AJ 6935 Steamer sighted bearing 235°T.  
      SE 2, Sea 2, Swell, clear, Vis. very good Maneuvered ahead for attack.  
    14.42 - 17.06 AK 4714 Dived.  Could not approach for a shot.  
        New maneuver ahead.  
    19.25 AK 4442 Dived.  Steamer bears 210°T.  Steers course between 10° and 30°.  
    20.42 AK 4441 1st shot at 400 meters, target speed = 9 knots, target angle = 60°, depth 3 meters.  No effect.  
        2nd shot from 400 meters, target speed = 9 knots, target angle = 100°, depth 2 meters.  
        Heavy detonation cloud, however slight effect, because too shallow.  Steamer floats on the cargo, despite over deck flooded, 2 lifeboats and many rafts are lowered very quickly after the detonation and manned.  They remain in the vicinity of the ship.  
    21.29   Because after 45 minutes the steamer makes no move to sink, I give him a coup de grace with depth 4 meters.  
        I have attacked and sunk the steamer without warning despite being outside the blockade area for the following reasons:  
        1)  He steers a zig zag course between 0° and 30°.  
        2) Armament consists of 7.5 or 8.8 cm canon and several anti-aircraft machine guns perfectly recognized on the stern.  
        3)  All masts were shortened and also before and after the smokestack 2 dummy masts were added to port to give a false target angle.  
        4)  No flag or neutrality markings.  
        The ship was probably the English freighter "CLAN ROBERTSON" (from the silhouette) 8000 GRT.  
        At the bow 2 long stanchions were mounted on each side, that led out to a high-carried bowsprit. Likely an Otter lead, 2 lifeboats with approximately 40 men move off on a westerly course  
        Dived to reload torpedoes.  
                                                          
           
Sun and Moon Data 29.05.41
 
- 10 -
 
           
           
           
           
    30.05.41 North Atlantic    
    02.00 AJ 6636 Surfaced.  
      NE 2-3, Sea 2, fog, Vis. 100-500 meters    
    08.00 AJ 6372    
    12.00 AJ 6261 Day's run:  Surfaced     = 131 nm  
                         Submerged =   17 nm.  
    16.00 AJ 3778 Periscope sighted to starboard.  Probably a German U-boat.  U-93?  
      Vis. up to 5000 meters breaking up  
      Evaded.  
    20.00 AJ 2964    
                                                          
    31.05.41 North Atlantic    
    00.00 AJ 2913    
    04.00 AJ 2568    
      NE 3-4, Sea 4, fog, Vis. 100-500 meters    
    08.00 AJ 2516    
    12.00 AJ 2197 Day's run:  Surfaced     = 199 nm  
                         Submerged =      0 nm = 199 nm.  
    13.00 - 18.50 AJ 2196 Test dive.  
        Work on the torpedoes.  
        Iceberg in sight bearing 0°T.  
    22.00   Reached the center of AJ 21.  Because for some days there has been no exact navigation fix the position must be regarded as very inexact.  Back and forth in position in the center of AJ 21.  In the vicinity there is a large iceberg.  
                                                          
    01.06.41 North Atlantic south of Greenland    
    05.00 = M.O.Z. [mean local sidereal time] 00.00 hours Tanker "BELCHEN" must now also be in the center of AJ 21.  Nothing is seen.  
    12.00 AJ 2118 Day's run:  Surfaced     = 46 nm  
      ESE 5-6, Sea 6-7, Vis. changing, squalls                  Submerged =    9 nm = 55 nm.  
      A very inaccurate navigation fix from 2 stars gives a difference between dead reckoning and actual position of 290°T, 20 nm.  
        Position amended.  
    13.30   Incoming Radio Message 1314/1/170 with regulations concerning Radio Message traffic with "BELCHEN".  
    16.42   Incoming Radio Signal 1620/1 from U-93.  Enemy heavy cruiser and destroyer in sight square AJ 2116 steering northerly course, running at medium speed (11-17 knots).  Lost from sight.  
        Signal was not heard by Communications Center.  
        I take no action there on, because the reported armed forces are already positioned to the north of me.  
           
           
           
Sun and Moon Data 30.05.41
Sun and Moon Data 31.05.41
Sun and Moon Data 01.06.41
 
- 11 -
 
           
           
           
    continued      
    01.06.41      
    16.42 ESE 6-7, Sea 8, Vis. bad, squalls Own position AJ 2155.  
    23.00 = 18.00 hours M.O.Z. "BELCHEN" called on 785 meters in the near zone communication on 785 meters.  No answer.  
                                                          
    02.06.41 North Atlantic, couth of Greenland    
    06.00 Wind abating heavily, SSE 2, Sea 5, Vis. good, changing cloudiness Navigation fix from three stars:  difference between dead reckoning and actual position 10°T, 54 nm.  
      Headed for the center of square AJ 21.  
    11.00 = 06.00 M.O.Z. "BELCHEN" called on 785 meters in the near zone communication.  No answer.  
    12.00   Day's run:  Surfaced     = 49 nm  
                         Submerged =    0 nm = 49 nm.  
    12.35 - 15.35 AJ 2152 Dived for destroyer, that ran at high speed to the north.  
    16.25   Tanker "BELCHEN" in sight.  Surfaced, ran up to him and requested recognition signal exchange "BELCHEN" answered with his name.  
    19.15 SSW 1-2, Sea 1, SE-Swell, clear, sunny, Vis. very good Hose connection established.  Fuel oil taken over in tow before the swell.  
    about 22.00   "U-93" in sight on the horizon.  Comes near, to take over after us.  
    24.00   Fuel transfer ended.  New connection established for drinking water transfer.  At the same time provisions transferred by lifeboat running behind.  
        Torpedo transfer can not be carried out due to the prevailing swell.  The Captain of "BELCHEN" requests that I include the following with my next Radio Message:  
        1.)  Radio Message sending side out of service.  Receiving side operable.  
        2.)  As recognition signals only recognition signal cartridges are on board.  Therefore no implementation. (Delivered by us up to and including 6 June)  
        3.)  In square AJ 21 several times English warships.  "BELCHEN" was to now stopped once by an English auxiliary cruiser and from American "MODOC".  Each time identified as the Swedish "STOCKHOLM" and was released.  
        4.)  In square AJ 26 brisk merchant traffic observed.  
        5.)  As supply area more to the west or northwest it is requested.  
                                                          
    03.06.41 North Atlantic, south of Greenland    
    04.40   Drinking water and provisions transfer ended.  With that supply was completed.  On the part of "BELCHEN very good seamanship  
           
Sun and Moon Data 01.06.41
Sun and Moon Data 02.06.41
Sun and Moon Data 03.06.41
 
- 12 -
 
           
           
           
    continued      
    03.06.41   skill, quick and good operation of the gear.  The transfer was somewhat complicated by the prevailing swell.  
    04.40 [AJ 9415 to BD 1895] On course 160° and 10 knots headed for the position in the ordered patrol line in Radio Message 1116/29/178.  
    08.00 AJ 2195    
    10.55 AJ 2436 Incoming Radio Message 1008/3/118 with the order to report passing 56°N when supply is completed.  
    11.00 - 12.00   Dived for test dive.  
    12.00 AJ 2436 Day's run:  Surfaced     = 62 nm  
                         Submerged =  2.5 nm = 64.5 nm.  
    16.00 AJ 2811    
    20.00 AJ 2857    
    22.00   Passed 56°30'N.  In our Short Signal Book there is no group given for "Have completed supply".  A garbled signal with this meaning received from "U-111" yields group "v v v" which is still available to us.  
    23.08   Signal with this group sent, because it was assumed to be correct.  Was not received by Communications Center.  
                                                          
    04.06.41 North Atlantic    
    00.00 AJ 2868    
      NNW 2, Sea 2, cloudy, Vis. good    
    01.49 Wind shifting counter clockwise Radio Message Signal sent again.  
    02.30   Confirmation received from Communications Center, however yields the meaning "Have sunk a ship".  Radio Message (Officer Only) received from "U-93" with the news concerning the sinking of "BELCHEN".  I had hoped to receive the Short Signal from "U-93". Because there is nothing, Radio Message 0302/4/141 sent.  
    03.45   "U-557" supply completed.  AJ 5316.  Signal is false.  As a result I do not send the message requested by "BELCHEN".  
    04.00 AJ 5337    
    08.00 AJ 5398    
    12.00 AJ 5669 Day's run:  Surfaced     = 223 nm  
      SSE 2, Sea 1, Swell, clear to cloudy, Vis. good                  Submerged =     0 nm = 223 nm.  
      Radio Message 0957/4/146 received with orders to take the position of "U-93".  As a result headed for square 9467.  
    16.00 AJ 5995    
    20.00 AJ 8366    
                                                          
           
           
Sun and Moon Data 03.06.41
Sun and Moon Data 04.06.41
 
- 13 -
 
           
           
           
           
    05.06.41 North Atlantic    
    00.00 AJ 9179    
      ESE 6-7, Sea 7, overcast, rain, Vis. bad    
    04.00 AJ 9428    
    09.00 AJ 9468 Dived due to bad visibility and sea state.  No further lookout and weapons use.  
    10.00 AJ 9461 Reached patrol line.  Took center position,  Remained submerged.  
    12.00   Day's run:  Surfaced     = 132 nm  
                         Submerged =     4 nm = 136 nm.  
    15.10   Surfaced, back and forth in position in accordance with orders.  
    22.00 W 8, Sea 7, overcast, squalls, rain, Vis. very bad Dived.  No further weapons use or lookout.  First Watch Officer Oblt.z.S. Klatt severe tonsillitis 39-40°C fever.  
                                                          
    06.06.41 North Atlantic    
    06.45   Surfaced.  Difference between dead reckoning and actual position after a navigation fix 130°T, 20 nm.  Position amended.  
    09.00 ESE 6, Sea 6, W-Swell, squalls, rain, Vis. bad Incoming Radio Message 1008/5/172 with orders, to shift the patrol line 180 nm to the south.  Due to very bad receiving conditions on 5 June and dive at night the order was received 24 hours late.  
        Headed for BC 2697.  
    12.00 AJ 9499 Day's run:  Surfaced     = 48 nm  
                         Submerged = 17 nm = 65 nm.  
    20.00 AJ 9796    
      N 4-5, Sea 5, SW-Swell, overcast, Vis. medium    
                                                          
    07.06.41 North Atlantic    
    00.00 BC 2338    
    08.00 BC 2663    
      N 4-5, Sea 4, Swell, overcast, Vis. medium    
    12.00 BC 2694 Day's run:  Surfaced     = 152 nm  
                         Submerged =     0 nm = 152 nm.  
    13.00 BC 2697 Reached new patrol line.  Back and forth in accordance with orders.  
                                                          
    08.06.41 North Atlantic    
    12.00 BC 2697 Day's run:  Surfaced     = 90 nm  
      NE 1-2. Sea 1, clear later overcast, Vis. good                  Submerged =   0 nm = 90 nm.  
      Back and forth in position in patrol line.  
    18.40   Incoming Radio Message 1804/8/158 with orders to report on the prevalence of fog.  
           
           
Sun and Moon Data 05.06.41
Sun and Moon Data 06.06.41
Sun and Moon Data 07.06.41
Sun and Moon Data 08.06.41
 
- 14 -
 
           
           
           
    continued      
    08.06.41      
    23.00   I report by Short Signal:  Up to 50% fog.  Of 16 days there were 6 days of fog and 2 days with bad visibility due to rain.  Short Signal was not received by Communications Station.  
    20.30   Radio Message 1941/8/161 received with orders to head for a position to the SE due to the failure of "U-46".  Headed for square BC 3751.  
                                                          
    09.06.41 North Atlantic    
    01.47   Short Signal with fog prevalence sent again and this time was understood.  
    09.40 BC 3751 Dived due to fog.  
      E 5, Sea 4, fog, Vis. 100 meters    
    12.00   Day's run:  Surfaced     = 63 nm  
                         Submerged =   4 nm = 67 nm.  
    15.00 - 16.00 Fog Surfaced to ventilate.  
    19.00 NE 2, Sea 3, overcast, misty, Vis. medium to bad Surfaced.  In accordance with Radio Message 1608/9/183 headed for square BC 379x.  Due to the failure of "U-48" moved one position to the SE.  
                                                          
    10.06.41 North Atlantic, level of Newfoundland.    
    00.00 BC 3791    
      ENE 3-4, Sea 3, fog, Vis. 1000 meters    
    04.00 BC 3799 Reached new position in patrol line.  Back and forth in position.  
    12.00   Day's run:  Surfaced     = 95 nm  
                         Submerged = 13 nm = 108 nm.  
    14.26   Incoming Radio Message 13.10/10/109 and continuation (Officer Only) U-77, U-577, U-108, U-101, U-75.  
        Occupy patrol line from square CC 3385 to CC 6625.  On 15 June at 02.00 hours be in position and steam back and forth as previously ordered etc.    
    16.15   With 1 diesel LF and course 209° (7 knots) headed for square CC 3655.  At last, we can leave this unfavorable area. The weather and visibility impairs every possible operation. No traffic observed.  
    20.00 BC 6161    
      SW 1-2, Sea 1, rain and fog patches, Vis. medium to bad    
                                                          
           
           
Sun and Moon Data 08.06.41
Sun and Moon Data 09.06.41
Sun and Moon Data 10.06.41
 
- 15 -
 
           
           
           
           
    11.06.41 North Atlantic, level of Newfoundland    
    00.00 BC 5399    
    04.00 BC 5669    
    08.00 BC 5698    
      SW 1, Sea 1, overcast, Vis. good    
    12.00 BC 5693 Day's run:  Surfaced     = 134 nm  
      NE 1, Sea 1, light SW-Swell, changing cloudiness, Vis. good                  Submerged =     0 nm = 134 nm.  
    16.00 BC 5958 First Watch Officer again sound.  
    20.00 BC 5998    
                                                          
    12.06.41 North Atlantic    
    00.00 BC 8325    
      S 2-3, Sea 2, misty, rain, Vis. bad    
    04.00 BC 8351    
    12.00 BC 8612 Day's run:  Surfaced     = 105 nm  
                         Submerged =     0 nm = 105 nm.  
    20.00 BC 8563    
      WSW 3-4, Sea 3, Vis. from 0 to good, in the west a very dark cloud bank    
                                                          
    13.06.41 North Atlantic    
    00.25 - 00.50 BC 8542    
      SSW 3-4, Sea 3-4, overcast, Vis. from 0 to good, bad in the west    
    04.00 BC 8816    
    08.30   Incoming Radio Message 0816/13/186:  Admiralty warning of a U-boat in square BC 85 at 04.00 hours.    B.d.U.  
        That was us. Why is not clear to me because the lookout generally worked well.  Probably a steamer located near us from black clouds in the west bank that was not seen.  
    12.00 BC 8866 Day's run:  Surfaced     = 104 nm  
      W 7-8, Sea 7, overcast, Vis. medium                  Submerged =     2 nm = 106 nm.  
    20.00 CD 1116    
      Heavily freshening wind    
                                                          
    14.06.41 North Atlantic    
    00.00 CD 1145    
      W 8, Sea 7-8, overcast, Vis. medium    
    02.00 CD 1147    
      W 8, Sea 8 Light in sight bearing 145°T.  Ran towards it.  On getting closer steamer with prescribed lighting, illuminated neutrality  
           
Sun and Moon Data 11.06.41
Sun and Moon Data 12.06.41
Sun and Moon Data 13.06.41
Sun and Moon Data 14.06.41
 
- 16 -
 
           
           
           
    continued      
    14.06.41      
    02.00   marking and a bright all around top light.  Steers 20°, speed 16-18 knots.  I do not come closer than 2000 meters.  Due to the sea state marking is not distinguished, I cannot catch him either.  No weapons use.  Pursuit given up.  Judging by the lights and the length of the ship (distant of the stern lantern) it may have been a USA warship.  Probably a battleship.  
         
    08.00 CC 3632  
      Wind initially shifting counter clockwise, then clockwise to the WNW 6-7, many squalls, Sea 8  
    11.30 CC 3653 A steamer in sight bearing 240°T.  Initially steers 310°, then 260°.  I attempt to maneuver ahead against the short steep seas, however I must slow down.  With both diesels LF I can just beat against the seas. Briefly at higher speed.  Also courses gains nothing.  No weapons use possible.  
      W 7-8, in squalls occasionally 10, Sea 8  
    14.00 W 8-9, Sea 8-9, Vis. medium, lightly misty to the south Because I can not get ahead, pursuit abandoned.  
    12.00   Day's run:  Surfaced     = 128 nm  
                         Submerged =     0 nm = 128 nm.  
    18.00 CC 3539 Difference between dead reckoning and actual position after a navigation fix 20°T, 14 nm.  
                                                        signed Paulssen  
    15.06.41 North Atlantic    
    00.00 CC 3655 Reached position in patrol line. Back and forth beginning with northerly course.  
      WNW 5, Sea 5, changing cloudiness, Vis. good  
    01.00   To southerly course.  
    12.00   Day's run:  Surfaced     = 123 nm.  
    18.00 CC 3636 [typo 3656] Difference between dead reckoning and actual position after a navigation fix 88°T, 24 nm.  Position amended.  
        Torpedo track from 140°T.  Passed under the propellers.  Own speed 1 diesel KF.  Initially ran parallel to the bubble tracks then back along the track and continually threw hand grenades.  
    18.39   Dived.  Heard an enemy U-boat in the sound gear and pursued continuously.  Enemy course 270°.  Goes at high speed and then stops to listen.  E-motors are heard clearly, also propellers.   
    20.00   Enemy course 295°, then 310°.  
    20.30   Enemy surfaced bearing 310° at the limit of periscope visibility.  Target angle 180°, 7000 meters away.  Runs away while blowing.  Recognized as an English type "Thames" type U-boat.  
    20.52 CC 3652 Surfaced and ran after the boat with the intention of attacking in the darkness.  Attempted to send Radio Message.  The frequency is continually occupied.  
      WNW 2-3, Sea 3, clear, Vis. very good  
    22.00   Enemy U-boat out of sight, lost; runs at high speed.  
    22.25 CC 3624 Dived to listen.  No further sound bearings.  Possibly the enemy U-boat has dived.  However E-motor sounds  
           
Sun and Moon Data 22.06.41
Sun and Moon Data 23.06.41
Sun and Moon Data 24.06.41
 
- 17 -
 
           
           
           
    continued      
    15.06.41      
    22.25   are not heard.  I give up the pursuit.  
                                                          
    16.06.41 North Atlantic    
    00.00 CC 3524 Surfaced.  Sent Radio Message:  
        To B.d.U. from "U-557":  Square CC 3656 evaded torpedo tracks.  After sound pursuit submerged English "Thames" type U-boat escaped on the surface course 310°.  I set off on course 245°, to shift my position 50 nm further to the west.  The enemy U-boat had probably determined my exact position, because I had been moving back and forth in the same area, before the shot with one diesel KF.  Furthermore I believe that the observed boat was the vessel that reported us on 13 June in BC 85 because we would have seen a surface ship. Therefore I believe it is not correct to go back to the old position.  I sent off the radio message, because I am certainly reported by the boat. Therefore I can break the radio silence to point out the danger to the boats positioned nearby and to bring about a shift of the patrol line from the B.d.U.  
    04.00 CC 3562    
    06.00 CC 3556 Reached position 50 nm to the west.  Resumed back and forth movement.  
    12.00 Wind calm, Sea 0, mirror flat, clear, very misty horizon, Vis. medium Day's run:  Surfaced     = 98 nm  
                       Submerged =   7 nm = 105 nm.  
        Peculiar yellow smoke clouds in sight bearing 20°T.  Soon dissipates.  
    14.38 CC 3553 Because nothing comes in sight, dived to listen.  In the suspected bearing nothing heard.  Apparently just an ordinary cloud, that fooled us.  On the other hand bearing 210°T a very weak sound heard.  Dived, to take the sound ahead.  Shifts out properly.  
    15.25 Horizon was clear, light SSW-wind (0-1) Surfaced and closed on it at high speed.  
    16.25 CC 3558 Despite improving visibility and running 12 nm nothing comes in sight.  Dived to listen.  No further sounds heard.  Probably the sounds heard at 15.00 hours were own sounds.  Another attempt given up.  
    16.45   Surfaced.  Again took position.  
                                                          
           
           
Sun and Moon Data 15.06.41
Sun and Moon Data 16.06.41
 
- 18 -
 
           
           
           
           
    17.06.41 North Atlantic    
    00.10 - 02.30 CC 3556 Forward over deck torpedo downloaded into the bow room.  Torpedo hatch opened to take in the torpedo for 77 seconds.  Worked very well.  Only the erection and stowage of the overdeck gear was too cumbersome.  In particular the stowage because the men must crawl too far beneath the overdeck and there are too few locking rings.  
      Wind calm, sea 0, mirror flat sea, light SE-Swell, misty horizon, Vis. medium  
    12.00 Wind freshening to SSW 3, Sea 3, increasing fog, Vis. medium to bad Day's run:  Surfaced     = 92 nm  
                       Submerged =   0 nm = 92 nm.  
                                                          
    18.06.41 North Atlantic    
    10.00 CC 5569 Dived due to fog.  We hope for an early shift from this area. Steamers or convoys can no longer be expected here after the U-boat warning was given on 13 June in BC 85, on 17 June in BC 91, and after we were attacked on 15 June by a hostile U-boat.  
      SSW 3-4, Sea 3, fog, Vis. 100-500 meters, rain  
    12.00   Day's run:  Surfaced     = 96 nm  
                         Submerged =   2 nm = 98 nm.  
    15.05 Fog, Vis. 100 meters Surfaced.  Sound bearing in 350°T.  Closed on it.  
    15.45 CC 5565 Dived to listen.  Sound bearing in 3xx.  
    16.08   Surfaced, closed on course 290°.  
    17.00 Fog, Vis. 50-100 meters Dived to listen.  In the sound gear diesel-like sounds are heard over the entire horizon.  Only much harder and metallic.  A bearing can not be distinguished any more.  Volume remains the same, so that the impression is given of own sounds.  However the sound conditions in this area are so good as on 15 June with the encounter with the English U-boat where the boat was still alarmingly loud at 6000 meters.  Because no bearing can be determined remained submerged to observe.  No change.  Nothing seen in the periscope.  
        Addendum:  Because later on diving no similar sounds were heard in the listening gear, is must be assumed that a vessel was the source of the sound.  
    22.00 CC 5552 Surfaced.  
      Fog, Vis. 50-100 meters Incoming Radio Message 1817/18/131 with orders to form a new patrol line.  [by reference points, BC 8720 - CD 5540]  
        Headed for square CD 1527 on 1 diesel KF.  
                                                          
           
           
Sun and Moon Data 17.06.41
Sun and Moon Data 18.06.41
 
- 19 -
 
           
           
           
           
    19.06.41 North Atlantic    
    00.00 CC 3561    
      SW 2, Sea 1, fog, Vis. 100-500 meters    
    08.00 CC 2626    
      Fog    
    12.00 CD 1411 Day's run:  Surfaced     = 103 nm  
                         Submerged =   12 nm = 115 nm.  
    20.00 CD 1199 Because still a lot of time remaining to occupy the new position (22 June 02.00 hours), I run with one diesel at KF farther to the east, and will then head for the position from the east.  
      Vis. somewhat better, about 3000 meters  
      Weather and visibility clearing    
        Difference between dead reckoning and actual position after a navigation fix 270°T, 10 nm.  
                                                          
           
           
        Continued on page 21.  
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
           
Sun and Moon Data 19.06.41
 
- 21 -
 
           
           
           
           
    20.06.41 North Atlantic    
    00.00 CD 1512    
      WSW 2-3, Sea 2, overcast, misty, light rain, Vis. bad    
    11.00 CD 1625 Came about.  Course 266°. 1 diesel KF.  
    12.00   Day's run:  Surfaced     = 148 nm  
                         Submerged =     0 nm = 148 nm.  
    14.50 CD 1311 Incoming Radio Message 1321/20/179 and continuation, which assigns us a new attack area.  
      Clear and Vis. good, blue sky  
      [by reference points depth 100 nm - in BdU's KTB the area is BD 5328 but the boat headed for BD 2982] On course 55° and 1 diesel KF headed for square BD 2982.  Stern wind and current let us make 6 knots.  More haste does not seem necessary to me because I hope for encounters on the way to the new area.  
    20.00 CD 1345    
                                                          
    21.06.41 North Atlantic    
    00.00 CD 1334 U-203 reports the encounter with U.S.A. battleship "TEXAS".  Therefore we must also have met the American battleship on 14 June.  
      W 2-3, Sea 3, overcast, misty, Vis. bad  
    04.00 BC 9779    
    08.00 BC 9785    
    12.00 - 12.30 BC 9748 Day's run:  Surfaced     = 123 nm  
      NW 2, Sea 2-3, overcast, hazy, Vis. medium to bad                  Submerged =     0 nm = 123 nm.  
      Dived for test dive.  
        Transit speed.  No events.  
                                                          
    22.06.41 North Atlantic    
    00.00 BD 4878    
      ENE 2, Sea 2, overcast, misty, Vis. bad    
    12.00 BC 9398 Day's run:  Surfaced     = 158 nm  
      SW 5-6, Sea up to 5, overcast, Vis. medium                  Submerged =     1 nm = 159 nm.  
                                                          
    23.06.41 North Atlantic    
    00.00 BD 4878    
      SW 4-5, Sea 5, overcast, occasional rain, Vis. bad to medium    
    12.00 BD 4917 Day's run:  Surfaced     = 159 nm.  
           
           
Sun and Moon Data 20.06.41
Sun and Moon Data 21.06.41
Sun and Moon Data 22.06.41
Sun and Moon Data 23.06.41
 
- 22 -
 
           
           
           
    continued      
    23.06.41      
    15.21   Incoming Radio Signal from "U-203" with the report of a convoy in AJ 9253, speed 10 knots, course 60°.  
    16.30   Incoming Radio Message 1556/23/163 with orders from B.d.U. for all boats to go, if at all promising.  
        The distance to the reported convoy is a minimum of 500 nm.  The enemy speed is too high.  Closing for us is therefore no longer possible.  
    20.00 BD 4637    
                                                          
    24.06.41 North Atlantic    
    00.00 BD 5412    
      WSW 2, Sea 2-3, Vis. changing overcast, Vis. good    
    04.00 BD 5188    
    08.00 BD 5192 Reached attack area,  
    12.00 BD 5169 Day's run:  Surfaced     = 163 nm.  
    18.20   Radio Message Signal from "U-203":  Enemy convoy AK 4543 steers SW-course, runs at slow speed.  
        At first I believe there is an error by U-203 in the course information.  
        But in order not to get any further away, I turn into the sea and await other other messages.  
    18.53   Radio Message Signal from U-203:  Enemy convoy AK 4460 steers 220°, runs 9 knots.  
        Therefore is is clear that this is a second convoy.  At this time the distance amounts to 500 nm. To reach still him, I would have to cover 600 nm.  
        My fuel oil inventory is still 90 cbm.  For the 600 nm at 2 x HF I expect to use 20 cbm.  For return transit (1600 nm) at economical transit speed 30 cbm.  Remaining for attack 40 cbm.  It seems promising to run down the reported convoy despite the great distance.  
        Besides I still have provisions for 14 days.  I must close at all costs, otherwise there won't be anything else.  
    20.20 BD 5251 Operate on course 280° and 2 x HF (14 knots).  According to my calculations I can approach as early as the evening of 26 June.  
                                                          
           
           
Sun and Moon Data 23.06.41
Sun and Moon Data 24.06.41
 
- 23 -
 
           
           
           
           
    25.06.41 North Atlantic    
    00.00 BD 5134    
      NW 2, Sea 3, partial overcast, Vis. good    
    00.18   Incoming Radio Message 2020 from U-203 with return transit report.  
        This worsens our already poor prospects, because now there are no further contact keeper reports.  
        Nevertheless I decide to press on.  
    02.10 BD 5113 White light star seen on the horizon bearing 150°T.  
    02.30   I suppose shipwreck survivors. Nevertheless, dived to listen to find out whether it is perhaps a ship. Nothing heard.  
    03.00   Surfaced.  Again continued to operate on the convoy.  
    04.00 BD 4333    
    08.00 BD 1978    
    10.40   Radio Message (Officer Only) 0926 from B.d.U. received:   
        Ships of the outbound U-203-convoy have been ordered to remain north and west of the line AJ 5755 to BC 1517.  
        As a result prospects of engaging him further are worsened.  We have to run an additional 220 nm.  Also the return transit is thereby 2000 nm.  
    12.00 BD 1873 Day's run:  Surfaced     = 223.5 nm  
                         Submerged =     1 nm = 224.5 nm.  
        Main ballast and reserve fuel oil tank IV converted for use as a ballast tank.  
    16.00 BD 1759    
      SE 3-4, Sea 3, fog, Vis. up to 1000 meters    
    21.30 BC 3951 I give up operating further on the convoy.   Due to the fog it has become hopeless. Our own experience in this area has shown that improvement in the visibility is not to be expected with continuous SE wind, U-111 has reported similarly.  
      SE 4-5, Sea 4, fog, Vis. up to 500 meters  
        Came about.  Again steered for the attack area on course 90°, 1 diesel LF.  
                                                          
    26.06.41      
    00.15 BC 3956 With a brief improvement in the visibility a U-boat is in sight bearing 120°T.  To recognition signal answers U-553.  Briefly went within hailing distance.  He has also broken off operations on the SW-bound convoy  
      S 6-7, Sea 5, fog and rain, Vis. up to 3000 meters  
    04.00 BC 3966    
    07.50 BD 1754 Visibility briefly improved.  Suddenly a large steamer (passenger liner) in sight at target angle 0°.  I must dive, because I can not get into the fog again in time.  
      SSW 7, Sea 7, fog and rain, Vis. up to 3000 meters  
           
           
Sun and Moon Data 25.06.41
Sun and Moon Data 26.06.41
 
- 24 -
 
           
           
           
    continued      
    26.06.41      
    08.00   Submerged the boat can not be held at periscope depth (attack depth).  Broached 3 times.  In the mean time the steamer passed by.  Runs at high speed.  
    08.50   Surfaced.  Pursued.  Enemy course about 220°.  Fog is thick again.  No weapons use possible due to sea state.  No further contact made.  
        Continued transit.  
    12.00 BD 1756 Day's run:  Surfaced     = 227 nm  
      S 6, Sea 7, rain, Vis. bad                  Submerged =     3 nm = 230 nm.  
    16.00 BD 1846    
    20.00 BD 1866    
      Weather clearing, SW 3-4, Sea 5, partial overcast, occasional sun, Vis. good    
                                                          
    27.06.41 North Atlantic    
    12.00 BD 2848 Day's run:  Surfaced     = 190 nm.  
      S 4, Sea 4, clear, Vis. good, weather was poorer Transit to the attack area.  
      No events.  
                                                          
    28.06.41 North Atlantic    
    12.00 BD 3761 In the attack area ran to the eastern limit.  
      SW 3-4, Sea 4, partial overcast, Vis. good Day's run:  Surfaced     = 144 nm.  
    14.30 BD 3842 U-boat in sight on the horizon bearing 10°T.  On recognition signal U-101 answers.  Briefly went within hailing distance.  
      SW 3, Sea 2, large swell, clear, Vis. good  
      B.d.U. intends in accordance with Radio Message 1152/28/140 and continuation, to catch the convoy reported by U-123 in DT 2623 in our area.  
        Despite very low provisions I intend to remain in this are as long as humanly possible.  With the greatest economy the sea endurance of the boat can be extended to 14 July.  
        U-101 can for this reason give no provisions.  
        Because U-101 remains in the vicinity of the meeting I go to the southern part of my operating area.  
    20.00 BD 3845    
      S 5-6, Sea 5, overcast, rain, Vis. medium to bad    
                                                          
           
           
Sun and Moon Data 22.06.41
Sun and Moon Data 23.06.41
Sun and Moon Data 24.06.41
 
- 25 -
 
           
           
           
           
    29.06.41      
    12.00 BD 3777 Day's run:  Surfaced     = 43 nm.  
      NW 4, Sea 4, overcast, Vis. good Headed for the southern part of the attack area.  No events.  
      U-103 has gained contact on the southbound convoy that U-123 lost.  
        Air reports at 07.30 hours in square AL 9121 2 cruisers and 2 merchant ships.  Probably a convoy.  
                                                          
    30.06.41 North Atlantic    
        Radio Message 2257/29/122:  
        Air was assigned against southwest-bound convoy.  Boats south of the latitude of Point "Herbert" standby for bearing signals on wavelength 670 meters from 07.00 hours.    B.d.U.  
        No bearing signals received.  
    08.00 BD 5296    
      S 4-5, Sea 3, clear, cloudy, Vis. medium    
    12.00 BD 5297 Test dive.  
      S 6, Sea 5, fog, Vis. 200-1000 meters Day's run:  Surfaced     = 86 nm.  
    15.10   Surfaced.  Continued on easterly course.  
    18.25 BD 5564 Incoming Radio Message 1735/30/110:  
        Boats in squares west of Point "Franz" course southeast, highest speed.        B.d.U.  
        At first I believe that we are set on the southern convoy from U-103 and therefore steer further to the south.  
        Radio Message 1750/30/111 clarifies.  Gives the probable position of the outbound convoy at 17.00 hours to: Point "Franz" in 202°T, 92 nm.  Southerly course, speed 6 knots.  
    19.30 BD 5674    
      SW 3-4, Sea 5, overcast, misty, Vis. bad Came to course 100°.  Highest speed is now for us 16 knots, because a cylinder of each diesel is out of service.  
                                                          
    01.07.41 North Atlantic    
    00.00 BD 5689    
      SW 3-4, Sea 4, overcast, occasionally misty    
    04.00 BD 6722 Incoming Radio Message 0303/1/129 with orders to stand by for bearing signals from Condor aircraft.  
    08.00 BD 6827    
      SW 3-4, Sea 4, fog    
    12.00 BD 6943 Day's run:  Surfaced     = 234 nm  
                         Submerged =     5 nm = 239 nm.  
           
Sun and Moon Data 29.06.41
Sun and Moon Data 30.06.41
Sun and Moon Data 01.07.41
 
- 26 -
 
           
           
           
           
    01.07.41      
    12.00   Faint bearing signals heard from the Condor aircraft.  
        Own bearing 61°T.  Bearing signal sent in accordance with orders.  The remaining bearings give no exact location. But it is clear that the convoy is considerably to the east.  
    13.00 SW 2, Sea 2-3, misty, Vis. 4000 meters Incoming Radio Message 1237/1/140:  
      From cross bearings and aircraft reports the position of the convoy at 11.00 hours is about in BE 5143.  Observed course 210°.  35 merchant ships with escort.        B.d.U.  
        Changed course to 90°.  Expect to intercept from 2 July at 00.00 hours.  
    16.00 BE 4741 Speed reduced to 13 knots to charge.  
      Vis. improving about 5 nm Auxiliary cooling water pump must run constantly and consumes much power. Cooling water circulation [piping/channels] of both diesels eaten through repeatedly.  
    20.00 BE 4755    
                                                          
    02.07.41 North Atlantic    
    00.00 BE 4846    
      SSW 1-2, Sea 1, misty, overcast    
    04.00 - 04.17 BE 4946 Dived to listen.  
      Pitch black night, misty, nothing seen at close range. Nothing heard  
    06.00 - 06.15 BE4965 Dived to listen.  Nothing heard.  
      Twilight begins    
      Fog Even though I have crossed the suspected intercept point of the convoy for enemy course 210°, I run further to the east, because I believe that the convoy steers a more southerly course.  
    07.30 BE 4965 Ran through a large oil slick for roughly 15 minutes.  Apparently the sinking location of a tanker.  
    08.00 - 08.50 BE 4966 Dived to listen.  
        Sound bearing 110°T.  Very faint.  Ran towards it.  
        From the assigned air reconnaissance (Radio Message 0030/153) no bearing signals were heard.  
    11.00 - 11.55 BE 5782 Dived to listen.  Diesel-like sounds bearing 140°T, same as on 18 June.  Very faint.  Continued on course 150°.  
    12.00   Day's run:  Surfaced     = 280 nm  
                         Submerged =   3.5 nm = 283.5 nm.  
           
Sun and Moon Data 01.07.41
Sun and Moon Data 02.07.41
 
- 27 -
 
           
           
           
    continued      
    02.07.41      
    14.00 - 14.20 BE 8131 Dived to listen.  
      Occasional fog, misty Sound bearing remains equally faint and inexact.  It can not be the convoy.  Probably a U-boat.  
        I give up maneuvering ahead to the east and south.  Run at course 220° and 7 knots, to be roughly on the enemy course in the hope that another boat is in sight and reports.  In this way I won't get further away.  
    15.11   B.d.U. requests position by Short Signal.  
        Sent:  BE 81  
    17.00   Incoming Alpha Alpha Signal from U-108.  
        Convoy in sight square BE 7176, steers westerly course, low speed.  
        Came to course 260° and highest speed (15 knots).  
    17.50 BE 8128    
      Misty horizon, Vis. up to 5 nm Vessel in sight bearing 250°T.  
        First Watch Officer crash dives.  
        Nothing seen in the periscope.  
    18.15   Surfaced.  In the reported bearing a German U-boat on the horizon.  Does not answer recognition signal cartridge.  
        Radio Message 1729/2/173 from B.d.U. received, that the destination harbor for the convoy is Gibraltar.  
        Came to course 240°, to great ahead to the south.  
    19.00   The sighted U-boat now replies U-79.  
        Radio Message 1832/2/175 from U-108:  Contact lost BE 7172 last course 210°, visibility 2 nm, in pursuit.  
        I am unsure whether or not this is not a new convoy. The course of 310° is questionable.  
        Initially came to course 270° to gain ground to the west.  I can still pursue when it is clear if it goes to the north or south.  
    20.00 BE 8151 Contact keeper reports received from U-108.  Enemy course 325°.  
      Vis. was better up to 10 nm  
        Incoming Radio Message 1939/2/178 from B.d.U. with information that the convoy may not be bound for Gibraltar.  
        Maneuvered ahead to the north.  
    21.30   Contact keeper report from U-108.  
    23.00   U-108 lost contact due to fog.  
                                                          
           
           
Sun and Moon Data 02.07.41
 
- 28 -
 
           
           
           
           
    03.07.41 North Atlantic    
    00.00 BE 7328 Continue running ahead despite broken contact.  
      SSW 1-2, long SW-Swell, misty, Vis. bad    
    04.00 BE 7235    
      Fog    
    05.30 BE 7222 Came to course 330° and 10 knots to conserve fuel.  
        Visibility 100-200 meters.  Therefore, I stay in the approximate direction of advance of the convoy.  To search for in the fog has no purpose.  
    08.00 BE 4849    
    12.00 BE 4811 Day's run:  Surfaced     = 260 nm  
                         Submerged =     3 nm = 263 nm.  
    16.00 BE 4453    
      Fog    
    18.00 BE 4421 Further operation on the convoy is hopeless.  I stay in his vicinity on easterly course and 1 diesel LF, I am certain that the convoy steers a northerly course as reported by U-108.  I do not distance myself too much and can continue to operate when the visibility improves.  
      Vis. 100-500 meters  
    19.30 BE 4184 Fog is thicker again.  Dived to listen.  
        Incoming Radio Message 1837/3/110 assigning U-98, U-96 and U-95 new attack areas.  
        Since it is up to the other boats south of 48°N, to fill out the established line, I occupy BD 60 and BE 40.  The fuel inventory easily allows it (45 cbm).  Still have provisions for a few days.  
    22.00   Surfaced.  
                                                          
    04.07.41 North Atlantic    
        U-77 and U-108 have broken off further pursuit of the convoy.  
    00.00 BE 4157    
      S 2, Sea 2, misty, rain, Vis. 1000 meters    
    04.00 BE 4127    
    08.00 BE 1784 Remain on southerly course and 1 diesel KF in the stated squares.  
      Fog  
    11.00 BE 1781 Dived.  
    12.00 SSW 3-4, Sea 3, fog Day's run:  Surfaced     = 119 nm  
                         Submerged =     6 nm = 125 nm.  
    15.20 BE 1784 Surfaced.  
      Vis. improving up to 5 nm    
    20.00 BE 4113    
                                                          
           
Sun and Moon Data 03.07.41
Sun and Moon Data 04.07.41
 
- 29 -
 
           
           
           
           
    05.07.41 North Atlantic    
    00.00 BE 4118    
      Fog, SSW 5-6, Sea 5, rain    
    04.00 BD 6366    
    12.00 BD 6394 Day's run:  Surfaced     = 66 nm  
      W 2, Sea 2, clear to partial overcast, Vis. up to 12 nm, misty horizon                  Submerged =  5.5 nm = 71.5 nm.  
    16.00 BD 6624    
    20.00 BD 6643    
    23.45   "U-96" reports south-bound convoy in square [BD] 9419, 12000 tonner sunk, 2 steamer hits heard and return transit.  
        Apparently he had a convoy.  It is incomprehensible to me why he did not not send contact keeper reports. "U-96" must have known that other boats were in the vicinity.  
                                                          
    06.07.41 North Atlantic    
    00.00 BD 6671    
      WSW 2, Sea 2, W-Swell, partial overcast    
    12.00 BD 6854 Day's run:  Surfaced     = 88 nm.  
    20.00 BD 9213 Course 90.  
                                                          
    07.07.41 North Atlantic    
    00.00 BE 7123    
      NNW 2-3, Sea 2-3, Swell, overcast, Vis. good    
    11.00   Test dive.  
    12.00 BE 4898 Day's run:  Surfaced     = 133 nm  
                         Submerged =    1.5 nm = 134.5 nm.  
    20.00 BE 5751    
                                                          
    08.07.41 North Atlantic    
    00.00 BD 9222    
      WNW 4, Sea 4, heavy W-Swell, Vis. good    
    12.00 BD 9321 Day's run:  Surfaced     = 110 nm  
                         Submerged =      0 nm = 110 nm.  
    20.00 BE 7112    
                                                          
           
Sun and Moon Data 05.07.41
Sun and Moon Data 06.07.41
Sun and Moon Data 07.07.41
Sun and Moon Data 08.07.41
 
- 30 -
 
           
           
           
           
    09.07.41 North Atlantic    
    00.00 BE 5768 Began return transit to the French Reich due to exhausted supplies.  
      WNW 3, Sea 2, partial overcast  
      In my opinion, the south-bound convoy must be through.  
    01.14   Radio Message sent:  B.d.U. from U-557:  
        Return transit BE 5773.  On 29 May AK 4441 independent 8000 GRT, 70% fog.  
        Initially on course 80 heading for de Groix because return harbor is not yet specified.  
    10.00   Test dive.  
    12.00 BE 6713 Day's run:  Surfaced     = 280 nm  
                         Submerged =      1 nm = 281 nm.  
    18.00   Attempt to send Short Signal:  
        36 hours off return harbor.  
    20.00 BE 6571 Short Wave transmitter out of service.  40-Watt Emergency Transmitter was not heard.  
        Short Signal sent with the emergency transmitter was not heard again.  
    21.00   Sent Short Signal again with the emergency eransmitter.  
    21.10   Incoming Radio Message 2108/9/177:  "U-557" be off Lorient 11 July 08.00.  
                                                          
    10.07.41 North Atlantic, Level of the West Coast of the French Reich    
    00.00 BE 6666    
      ESE 1-2, Sea 1, lightly overcast, very bright night    
    04.00 BF 4462    
    08.00 BF 4532    
    09.00 - 09.25   Test dive.  
    12.00 BF 4623 Day's run:  Surfaced     = 296 nm  
                         Submerged =      1 nm = 297 nm.  
    14.30 BF 5419 Sighted 3 drifting mines.  1 shot at.  
    15.40 BF 5452 Fishing trawler seen at the limit of visibility bearing 120°T.  Avoided on the surface.  
    19.20 BF 5545 Small steamer in sight bearing 90°T.  At the same time another bearing 30°T.  The latter with target angle 0°.  Because it is not perfectly distinguished, dived.  
        Submerged determined that both fishing trawlers  fiy the French flag and yellow pennant.  
    20.30   Surfaced.  Moved off on the surface on course 210°.  
    from 21.00   Several times with Emergency Transmitter and to arrange for Short Signal Bearing Transmitter II.  Not received by Communications Center.  
                                                          
           
Sun and Moon Data 09.07.41
Sun and Moon Data 10.07.41
 
- 31 -
 
           
           
           
           
    11.07.41 Bay of Biscay    
    00.00 BF 5563    
    04.00   Reached Point "Ceder".  Entry Route "Cederland".  
    06.00   Passed German convoy on southerly course.  Was not sighted.  No recognition signals.  
    07.30 Point L 2 Reached Point L 2.  
        Entered Lorient in the wake of the escort.  
    08.30 Lorient Made fast alongside "ISERE".  
        Day's run:  Surfaced     = 300 nm  
                         Submerged =      3 nm = 303 nm.  
                                                          
                                                    Oblt.z.S. and Kommandant  
           
                      Total duration of the war patrol:      60 days.  
           
                      Total nautical miles covered:           8524 nm.  
           
                      Successes:                1 steamer, estimated 8000 GRT.  
           
                      Special experiences are not present.  
                                                          
                                                    Oblt.z.S. and Kommandant  
           
           
           
           
           
           
           
           
           
           
           
           
           
           
Sun and Moon Data 11.07.41

  Enclosures to U-557's KTB - click on the text at left to proceed to the document
   
Chart Track chart covering entire patrol
   
Torpedo Torpedo Firing Reports (Schussmeldung)

 
 
     
 

                   Comments of the Befehlshabers der Unterseeboote

 
     
                   Due to the often very poor visibility, the boat had very few opportunities for success. The war patrol was performed intelligently throughout. However, it was wrong after being fired upon by an enemy submarine to go to the dive site of the U-boat in order to combat with inadequate means (hand grenades). This jeopardized own boat without the prospect of its own success  
     
   
Signed in draft:  Dönitz.
 
   

For the Befehlshaber der Unterseeboote

 
   
- The Chief of the Operations Department -
 
 
                         
     
     
 


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