U-66 - 9th War Patrol

Translation by Jerry Mason with the help of Ken Dunn

Departed
Date
Arrived
Date
Days at Sea
Lorient
7 April 1943
Lorient
1 September 1943
148

 

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
10 Jun
20.58
31°23'N, 79°00'W
ESSO GETTYSBURG
10,173
American
 
2 Jul
06.07 - 06.30
31°23'N, 78°36'W
BLOODY MARSCH
10,195
American
 
22 Jul
09.16 - 11.16
25°22'N, 68°38'W
CHERRY VALLEY (damaged)
10,172
American
 
     
 Total = 30,540
   
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 66"  
           
           
        Beginning:  25.3.1943  
        Ending:      01.9.1943  
           
                             Time zone:        D.G.Z.  
                             All naval squares  
                             Operating per Operations Order 54  
           
           
                              Kommandant: Kapitänleutnant  M  a  r  k  w  o  r  t  h.  
           
           
     
Distribution: 2 x O.K.M.
  1 x B.d.U. U. -Op.-
  1 x Kmdr.Adm.Uboote.
  1 x F.d.U.-West-
  1 x F.d. U.-Ausb.-
  1 x 27.U-Flottille
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 -
 
           
           
           
           
    25.03.43 Lorient S II Torpedo offload from 16.00 to 20.00 hours, fuel oil and munitions offload.  Cleared the boat.  
    26.03.43             S II Towed to Keroman Bunker 18, lubricating oil offload, Cleared the boat.  
    27.03.43             K 18 Cleared the boat.  
    28.03.43             K 18 Towed and dry docked in Bunker III.  
    29.03.43 -      
    28.04.43             K III Shipyard work.  
    08.04.43             K III Undocked for Keroman Bunker 14.  When the boat was refloated a leak was discovered in tube IV.  Redocked and a new gasket installed in tube IV.  
    09.04.43 -      
    20.04.43             K 14 Shipyard overhaul.  
    21.04.43             K 14 Torpedoes loaded, fuel oil loaded, dockyard testing.  
    22.04.43             K 14 Test run, including the flak armament and machine guns.  
    23.04.43             S 1 Completion of the shipyard period.  Equipping.  
    24.04.43             S 1 Equipping, final adjustments and overhaul.  
    25.04.43             S 1 Final trim testing.  
    26.04.43             S 1 Final equipping, ready for sea and diving.  
    27.04.43      
    18.00   Departed on 9th war patrol.  
    18.20   Taken in convoy.  
    20.15 NW 2-3, Vis. 10 nm Released from convoy.  
    22.00   Enemy radar detection, proceeding submerged.  
    24.00 On Route    
      N 2, 9/10, strong marine phosphorescence    
           
    28.04.43   While proceeding submerged a strong odor issued from new insulation of the exhaust manifold.  Because CO2 development was assumed smoke was evacuated by the diesel, and absorbed by potash cartridges.  In spite of using escape lungs many sailors were affected after a while, even in other spaces.  Other gases were not discovered with the new gas examiner.  CO2 content amounted to 0.7%.  On surfacing several sailors still fell out.  Because under these conditions an extended underwater passage in the Bay of Biscay could not be justified, return transit to Lorient.  
    02.05   Radio Message:  Returning because of the appearance of unknown gas while proceeding submerged.  Positioned 04.00 hours Point Laterne.  
                                                 "Markworth"  
    03.05   Crash dive! for radar detection.  
    05.05   Surfaced.  
    05.33   Crash dive! for radar detection.  
    06.16   Surfaced.  
    08.00   Taken in by Sperrbrecher.  
    10.20   Made fast in Skorff Bunker.  
    19.00 -   Testing.  
    24.00      
           
    29.04.43   Skorff Bunker.  Work on the diesel and E-motors operating exercises.  
           
           
           
Sun and Moon Data 27.04.43
Sun and Moon Data 28.04.43
Sun and Moon Data 29.04.43
 
- 2 -
 
           
           
           
    continued      
    29.04.43      
    18.00   Departed on 9th war patrol.  
    18.10 W 1, Sea 0, 8/10, Vis. 10 nm In convoy with Sperrbrecher.  
    20.55   Released from Sperrbrecher convoy.  
           
    30.04.43      
    xx.xx WSW 2, Sea 1, overcast, strong marine phosphorescence Passed various illuminated fishing vessels.  
    04.00 BF 5471 Released from convoy.  
    05.18   Crash dive for training.  
    08.00 BF 5496    
    12.00 BF 5499 Day's run:  Surfaced     107 nm  
                         Submerged 10.5 nm  
    16.00 BF 5732    
    20.00 BF 5735    
    23.34   Surfaced.  
    24.00 BF 5738    
           
    01.05.43      
    00.35   Crash dive for training.  
    04.00 BF 5764    
    05.05   Surfaced.  
    05.06   Crash dive for radar detection.  
    05.42   Surfaced.  
    06.20   Crash dive for radar detection.  
    08.00 BF 5785    
      NNE 3, Sea 2, 4/10    
    12.00 BF 5785 Day's run:  Surfaced     12 nm  
                         Submerged 34.5 nm  
    16.00 BF 5788    
    20.00 BF 8213    
    22.48   Surfaced.  
    23.42   Crash dive for training.  
    24.00 BF 8217    
           
    02.05.43      
    04.00 BF 8241    
    04.35   Surfaced.  
    05.40   Crash dive for training.  
    08.00 BF 8192    
    12.00 BF 8192 Day's run:  Surfaced     21 nm  
      NNW 4, Sea 4, overcast                  Submerged 32.5 nm  
    16.00 BF 8194    
    20.00 BF 8197    
    22.45 NNW 4, 6/10, Sea 4, strong marine phosphorescence Surfaced.  
    23.40   Crash dive for training.  
    24.00 BF 8426    
           
    03.05.43      
    00.00 - NNW 4, Sea 4, 5/10, Vis. clear, medium marine phosphorescence Drills.  
    02.00    
    04.00 BF 8428    
    04.11   Surfaced.  
           
Sun and Moon Data 29.04.43
Sun and Moon Data 30.04.43
Sun and Moon Data 01.05.43
Sun and Moon Data 02.05.43
Sun and Moon Data 03.05.43
 
- 3 -
 
           
           
           
    continued      
    03.05.43      
    04.15   Steamer light bearing 130°T.  
    05.17   Steamer light bearing 280°T.  
    05.38   Steamer light bearing 220°T.  
    06.11   Crash dive for training.  
        Radio Message. . . .     5.)  . . .Markworth . . . assemble in naval square BD 33, depth 80 nm.  More to follow.  
    08.00 BF 7693    
      NNW 3, Sea 3, 8/10, Vis. 6 nm    
    12.00 BF 7934 Day's run:  Submerged   32.5 nm  
                         Surfaced          33 nm  
    16.00 BF 7929    
    20.00 BF 7952    
      NNW 4, 9/10, Sea 5, (rain), Vis. clear, strong marine phosphorescence    
    22.35   Surfaced.  
    24.00 BF 7953    
           
    04.05.43      
      NW 5, 8/10, Sea 5, strong marine phosphorescence    
    03.25   Steamer bearing 260°T on northerly course.  
    04.00 BF 7942 Several steamer lights.  
    06.00 NNW 6, 8/10, Sea 6, strong marine phosphorescence Dived.  
    08.00 BF 7853    
    12.00 BF 7852 Day's run:  Surfaced      72 nm  
                         Submerged  20 nm  
    16.00 BF 7851    
    20.00 BF 7843    
    21.00 -   Drills.  
    22.00      
    22.31   Surfaced.  
    22.32   Crash dive for radar detection (naval reconnaissance)  
    24.00 BF 7841    
      NNE 4, 8/10, Sea 4-5, strong marine phosphorescence    
           
    05.05.43      
    00.26   Surfaced.  
    00.52   Crash dive!  
    03.11   Surfaced.  
    04.00 BF 7761    
      NW 6, 4/10, Sea 6, medium marine phosphorescence, Vis. good    
    04.20   Crash dive for training.  
    08.00 BF 7752    
      NW 7, Sea 6    
    12.00 BF 7751 Day's run:  Surfaced      17 nm  
                         Submerged  44 nm  
    16.00 BF 7743    
    15.02   Radio Message . . . . 2.) . . . . . Markworth. . . .  
        Occupy at economical cruising speed.  Patrol line from BD 3238 to AL 1843.  Later transit to the north to combine with boats named in [paragraph] 1 in patrol line is [illegible word]. [From U-190's KTB the illegible word is intended.]  
           
           

Note:  From BdU's KTB, the patrol line in the radio message received on 5 May at 15.02 is actually from BD 3238 to BE 1843.

Sun and Moon Data 03.05.43
Sun and Moon Data 04.05.43
Sun and Moon Data 05.05.43
 
- 4 -
 
           
           
           
    continued      
    05.05.43      
    20.00 BF 7741    
    23.16 NNW 5, Sea 5, 8/10, Vis. moderate, strong marine phosphorescence Surfaced.  
    24.00 BE 9962    
           
    06.05.43      
    03.48 NNW 4-5, Sea 5, 8/10 Starboard diesel out of service, tie rod and crank case torn in several places.  
    04.00 BE 9943  
      NW 5-6, 2/10, Sea 5, (rain)    
    05.57   Crash dive for training.  
    08.00 BE 9941    
    12.00 BE 9862 Day's run:  Surfaced      65 nm  
                         Submerged  34 nm  
    14.24   Radio Message . . . . Markworth. . . . send passage report immediately.  
    16.00 BE 9861    
      NW, 6/10, Sea 5    
    20.00 BE 9853    
    22.32 NW 3-4, 3/10, Sea 3 medium marine phosphorescence Surfaced.  
    24.00 BE 9851    
           
    07.05.43      
    03.30 NNW 3, 3/10, Sea 4 Crash dive for aircraft with a lighted turret.  
    04.00 BE 9817    
    05.19   Radio Message  1.)  Starboard diesel tie rod cylinder 7-8 broken.  
      WNW 3, 7/10, Sea 3, moderate marine phosphorescence 2.) Will finish repairs to crankcase and bearing this evening.  
      3.) Question allowable load.  
      4.)  BE 89.  
    07.00   Dived.  
    08.00 BE 9735 Fire fighting training.  
    12.00 BE 9731 Day's run:  Surfaced      54.5 nm  
                         Submerged  31    nm  
    14.23   Radio Message Diesel with broken tie rod limited to only HF load.  Avoid oscillation points.  
    14.23   Radio Message  Contrary to previous orders new staging point for . . . . Markworth AJ 30.  No message on arrival.  
    16.00 BE 9723    
    16.48   Surfaced.  
    17.02   Dived.  
    20.00 BE 9722    
    21.56 W 2-3, 9/10, Sea 5 Surfaced.  
    24.00 BE 9725    
           
    08.05.43      
      WNW 5, overcast, Sea 5, strong marine phosphorescence    
    04.00 BE 9715    
    07.06   Crash dive for training.  
    08.00 BE 9741    
      NW 6, Sea 5    
    12.00 BE 8963 Day's run:  Surfaced      51.5 nm  
                         Submerged  29.5 nm  
           
Sun and Moon Data 05.05.43
Sun and Moon Data 06.05.43
Sun and Moon Data 07.05.43
Sun and Moon Data 08.05.43
 
- 5 -
 
           
           
           
    continued      
    08.05.43      
    15.25 NW 4, 6/10, Sea 5, Vis. good, marine phosphorescence Surfaced.  
    16.00 BE 8938 Crash dive for training.  
    20.00 BE 8961    
    22.40 WNW 4-5, 4/10, Sea 5 Surfaced.  
    24.00 BE 8943    
           
    09.05.43 NNW 4-5, overcast, Sea 5    
    04.00 BE 8862    
      NNW 4, 4/10, Sea 5    
    07.31   Crash dive for training.  
    08.00 BE 8851    
      NNW 4-5, Sea 5, 9/10    
    12.00 BE 8842 Day's run:  Surfaced      71.5 nm  
                         Submerged  22.5 nm  
    15.39   Surfaced.  
    15.40   Crash dive for training.  
    16.00 BE 8841    
    17.48 W 3, 7/10, Sea 4 Surfaced.  
    18.19   Crash dive for training.  
    20.00 BE 8763    
      SW 5, overcast, Sea 5    
    21.23 SW 7, overcast, Sea 6-7 Surfaced.  
    24.00 BE 8761    
           
    10.05.43 SW 7, overcast, Sea 6-7 (rain)    
    04.00 BE 8727    
      Medium marine phosphorescence, Vis. changing, rain showers    
    08.00 BE 8711    
      W 6-7, Sea 6, overcast    
    09.00   Dived.  
    12.00 BE 7699 Day's run:  Surfaced      66.5 nm  
      W 3, 8/10, Sea 3-4                  Submerged  25.5 nm  
    13.48   Surfaced.  
    15.46   Crash dive for training.  
    16.00 BE 7694    
    16.02 W 3, 4/10, Sea 3-4 Surfaced.  
    18.32   Radio Message  1.)  28 April DC 9261 U-cruiser Type "NARWHAL" 170°, 14 knots, dived.  
        2.)   DC 12-14, independents going SW on the 100-meter line apparently by fits and starts, "Hatteras" leg by night, no vessels 6 May after transmission square 2280, after radar detection 162 cm, destroyer course 130° high speed without detection, heavy air by day.  
        3.)  Night of 7 May CA 8825 tanker in ballast 8000 GRT 180° 9 knots straight course.  3 fan miss Ato depth 5 meters, 2 single misses Eto depth 4 meters unexplained.  Both times running correctly, Sea 4, torpedo course into the sea.  Return transit.  
        4.)   Yesterday CA 9997 last torpedo on a large tanker, miss 150° 17.5 knots.  
        5.)  CB 7914, 39 cbm.  Request barrel for Flak 38 . . . .  
                                                               "U-129"  
Sun and Moon Data 08.05.43
Sun and Moon Data 09.05.43
Sun and Moon Data 10.05.43
 
- 6 -
 
           
           
           
    continued      
    10.05.43      
    20.00 BE 7854    
      W 4, 4/10, Sea 5    
    21.35   Radio Message  Bargsten, Markworth, Wintermyer make for CA 87.  
        IntentionAbove the Azores to "Cape Hatteras" from the south (with the Gulf Stream) because enemy south-north traffic will use the strong current (80 nm/day's run).  
    24.00 BE 7642    
      W 3, 4/10, Sea 4, no marine phosphorescence    
           
    11.05.43      
      WSW 4, 3/10, Sea 3, (rain)    
    04.00 BE 7561    
      Moonshine, light marine phosphorescence    
    08.00 BE 7551    
    08.45 SW 3-4, 4/10, overcast (rain) Crash dive for training.  
    12.00 BE 7542 Day's run:  Surfaced      109 nm  
                         Submerged  12.5 nm  
    16.00 BE 7436    
      SSW 6, Sea 5, mist, overcast    
    16.50   Surfaced.  
    17.45   Crash dive for training.  
    20.00 BE 7434    
      WbyS 6, Sea 6, 6/10, strong marine phosphorescence    
    21.14   Surfaced.  
    24.00 BE 7456    
           
    12.05.43      
      SW 6, Sea 6, 2/10    
    04.00 BE 7483    
      Lightening, strong marine phosphorescence    
    08.00 BE 7473    
      WSW 5-6, Sea 6, 9/10    
    08.30   Crash dive for training.  
    12.00 BE 7474 Day's run:  Surfaced      55.5 nm  
      SW 5, 6/10, Sea 5                  Submerged  32.5 nm  
    12.20   Surfaced.  
    14.27   Crash dive for training.  
    16.00 BD 9693    
    20.00 BD 9691    
    23.15   Surfaced.  
    24.00 BD 9688    
           
    13.05.43      
      SSW 2, 4/10, Sea 2, long swell, no marine phosphorescence    
    04.00 BD 9958    
      SW 3, 4/10, Sea 3, no marine phosphorescence    
           
Sun and Moon Data 10.05.43
Sun and Moon Data 11.05.43
Sun and Moon Data 12.05.43
Sun and Moon Data 13.05.43
 
- 7 -
 
           
           
           
    continued      
    13.05.43      
    08.00 CE 3238    
    09.00   Crash dive for training.  
    12.00 CE 3256 Day's run:  Surfaced     110.5 nm  
                         Submerged      31 nm  
    12.45   Surfaced.  
    12.47   Crash dive for training.  
    12.55   Surfaced.  
    13.59 SW 2, 5/10, Sea 3 Crash dive for training.  
    16.00 CE 3281    
      NW 4, Sea 3, 5/10    
    18.52   Surfaced.  
    19.35   Radio Message  Markworth report weather.  
    20.00 CE 3278    
    21.41 NNW 4, Sea 4, 7/10 Crash dive for training.  
    22.40   Surfaced.  
    24.00 CE 3437    
           
    14.05.43      
      NNW 3, 4/10, Sea 3, Vis. good, weak marine phosphorescence    
    04.00 CE 3448    
    06.04   Short Weather Message sent.  
    08.00 CE 2685    
      NNW 3, Sea 2-3, 9/10 (rain)    
    08.37   Crash dive for training.  
    08.45   Surfaced.  
    08.58 NNW 3, 5/10, Sea 3 Crash dive for training.  
    11.40   Surfaced.  
    12.00 CE 2679 Day's run:  Surfaced      128 nm  
      NNW 3, 4/10, Sea 3                  Submerged  20.5 nm  
    14.01   Crash dive for training! Blowing! and 2 cm clear.  
    15.30   Crash dive for training.  
    16.00 CE 2837    
    16.52   Surfaced.  
    16.57   Crash dive for training.  
    17.20   Surfaced.  
    18.44 N 4, 6/10, Sea 3 Crash dive for training.  
    18.51   Surfaced.  
    20.00 CE 2846    
      N 3, 9/10, Sea 2-3    
    21.44 -   "Flores" in sight.  
    22.27      
    24.00 CE 2765    
           
    15.05.43      
    01.43 NbyE 3, 9/10, Sea 2-3, no marine phosphorescence Radio Message  1.)  On 15 May 10.00 hours "Markworth" switch to America II Circuit.  
        2.) "Markworth" report weather.  
    04.00 CE 2784    
    08.00 CE 4332    
    10.00 NbyE 3, 7/10, Sea 2-3 Switched to America II Circuit.  
    12.00 CE 4351 Day's run:  Surfaced     124.5 nm  
                         Submerged      4.5 nm  
           
Sun and Moon Data 13.05.43
Sun and Moon Data 14.05.43
Sun and Moon Data 15.05.43
 
- 8 -
 
           
           
           
    continued      
    15.05.43      
      NbyE 4, 5/10, Sea 4    
    15.15   Crash dive for training.  
    15.46   Surfaced.  
    16.00 CE 4347    
      N 4, 7/10, Sea 4    
    20.00 CE 4258    
      N 5, Sea 4-5, 4/10    
    21.59   Radio Message  "Markworth" report weather.  
    24.00 CE 4196    
           
    16.05.43 NE 4, 3/10, Sea 4, Vis. 10 nm, no marine phosphorescence    
    03.27   Radio Message  "Markworth" immediately switch to America Circuit.  Serve as radio repeater for U-boats in the North Atlantic.  
    04.00 CE 4423    
    06.38   Reported weather by Short Signal.  
    06.50   Crash dive for training (radar detection).  
    07.05   Surfaced.  
    07.20   Crash dive for training.  
    07.25   Surfaced.  
    07.55   Crash dive for training.  
    08.00 CE 4419    
    08.07 N 5, 6/10, Sea 4 Surfaced.  
    12.00 CD 6659 Day's run:  Surfaced     162 nm  
                         Submerged   2.8 nm  
    15.00 N 4, Sea 4, 3/10 Crash dive for training.  
    16.00 CD 6677 Surfaced.  
    16.26   Radio Message  "Markworth" on 17 May at 00.00 hours switch to Hubertus Circuit.  
    18.59 NbyE 4, 3/10, Sea 4, Vis. good 10 nm Crash dive for training.  
    20.00 CD 6826    
    20.06 N 4, 6/10, Sea 3 Surfaced.  
    20.00 -      
    23.00   Combat exercises.  
    24.00 CD 6845    
           
    17.05.43      
    00.00 N 3, 7/10, Sea 2, no marine phosphorescence, moonshine Switched to Hubertus Circuit.  
    04.00 CD 6792    
    08.00 CD 9121    
      W 2, Sea 1, 8/10    
    12.00 CD 8339 Day's run:  Surfaced     176.5 nm  
      SbyW 3-4, 7/10, Sea 3, Vis. good                  Submerged     2.5 nm  
    16.00 CD 8329    
    19.17 SbyW 1, Sea 2, overcast, rain Crash dive for training.  
    19.34   Surfaced.  
    20.00 CD 8345    
    20.10   Crash dive for training.  
           
Sun and Moon Data 15.05.43
Sun and Moon Data 16.05.43
Sun and Moon Data 17.05.43
 
- 9 -
 
           
           
           
    continued      
    17.05.43      
    20.23   Surfaced.  
    20.25   Crash dive for training and blowing.  
    20.34 SW 1, overcast, passing showers, (rain), Sea 2, long medium-high swell Crash dive for training and blowing.  
    21.21   Radio Message . . . . 2.) "Markworth" Short Signal weather report before 05.00 hours. . . .  
    24.00 CD 8292    
           
    18.05.43      
      SbyW 2, Sea 1, overcast (rain), long SW-swell, Vis. moderate 3-5 nm, strong marine phosphorescence    
    03.10   Shadow to port.  
    04.00 CD 8523    
    04.01   2 cm ready!  
    04.08   Shadow is a large floating whistle buoy.  Sunk by flak bombardment.  
    04.54   Sent Short Signal.  
    08.00 CD 8518    
      ESE 3, Sea 2, 6/10, Vis. good, no marine phosphorescence    
    12.00 CD 8465 Day's run:  Surfaced      159 nm  
      E 3, 3/10, Sea 2, long swell, Vis. good                  Submerged   2.5 nm  
    16.00 CD 8468    
    20.00 CD 8488    
    20.44 E 2, Sea 2, 4/10 (rain) Crash dive for training.  
    21.00   Surfaced.  
    24.00 CD 8715    
      NNE 2, 2/10, Sea 1, long swell    
           
    19.05.43      
    04.00 CD 7964    
      NE 2, 2/10, Sea 2, long medium-high swell, no marine phosphorescence, Vis. good, bright moonshine    
    08.00 CD 7973    
    10.46 NW 3, Sea 2, 5/10 Radio Message . . . . 2.)  "Markworth" switch to America I Circuit at 16.00 hours.  
    12.00 DF 1133 Day's run:  Surfaced      152 nm  
      W 4, overcast, Sea 3-4, Vis. good                  Submerged      1 nm  
    12.00   Smoke cloud and mastheads in sight.  
    13.10   Dived "Action Stations".  
           
Sun and Moon Data 17.05.43
Sun and Moon Data 18.05.43
Sun and Moon Data 19.05.43
 
- 10 -
 
           
           
           
    continued      
    19.05.43      
    14.08 SW 4, 5/10, Sea 3-4, Vis. good 10 nm Steamer abeam.  It is the Portuguese "GAZA", course 85°, speed 10.5 knots.  
    15.00   Steamer passes out of sight bearing 85°T.  
    15.08   Surfaced.  
    15.15   Crash dive for training.  
    16.00 DF 1211 Switched America I Circuit.  
    16.06 WNW 3-4, Sea 3, 4/10 Surfaced.  
    20.00 DF 1137    
      W 3-4, Sea 3, overcast (rain)    
    24.00 DF 1157    
           
    20.05.43      
      WbyN 4, overcast, Sea 3, hazy horizon    
    04.00 DF 1174    
    08.00 DE 3631    
      WbyN 3, overcast, Sea 3    
    12.00 DE 3651 Day's run:  Surfaced      135 nm  
                         Submerged      1 nm  
    16.00 DE 3647    
      W 3, Sea 3, 3/10    
    20.00 DE 3567    
      WNW 3, 6/10, Sea 2-3    
    24.00 DE 3587    
           
    21.05.43 W 3, 6/10, Sea 2-3, no marine phosphorescence    
    04.00 DE 3816    
      SW 2, Sea 2, 3/10    
    08.00 DE 3763    
      WNW 1, 5/10, Sea 1, Vis. good    
    12.00 DE 3791 Day's run:  Surfaced  143.5 nm.  
    15.41   Crash dive for training.  
    16.00 DE 3783    
    16.26 SWbyW 2, 7/10, Sea 1, Vis. good Surfaced.  
    20.00 DE 3787    
      SW 2, Sea 2, 4/10, Vis. good    
    24.00 DE 6114    
           
    22.05.43      
      SW 2-3, 4/10, Sea 2, Vis. 8 nm, no marine phosphorescence    
    04.00 DE 5358    
      SWbyW 3, Sea 2, 9/10    
    08.00 DE 5375    
           
Sun and Moon Data 19.05.43
Sun and Moon Data 20.05.43
Sun and Moon Data 21.05.43
Sun and Moon Data 22.05.43
 
- 11 -
 
           
           
           
    continued      
    22.05.43      
    12.00 DE 5522 Day's run:  Surfaced     169.5 nm  
      SW 2-3, 6/10, Sea 2, Vis. good                  Submerged        1 nm  
    16.00 DE 5542    
      SW 2, 5/10, Sea 2, Vis. very good    
    20.00 DE 5465    
    21.30   Crash dive for training.  
    22.15   Surfaced.  
    23.01   Crash dive for training.  
    23.14 SW 1, 2/10, Sea 2, Vis. very good Surfaced.  
    24.00 DE 5488    
           
    23.05.43 SW 1, 1/10, Sea 1, Vis. very good    
    04.00 DE 5742    
    08.00 DE 4991    
    11.55 W 2-3, 2/10, Sea 3, Vis. good Mastheads bearing 180°T.  
    12.00 DE 4979 Day's run:  Surfaced     166 nm  
      SSW 3, 2/10, Sea 3, Vis. very good 15 nm                  Submerged   4.4 nm  
    16.00 DE 8114 By plotting the steamer runs at a general speed of 16 knots.  With one diesel at HF and one at 2 x GF (exhaust temperature at 600°)  if I run with the sea 14-14.5 knots.  Falling behind.  
      SW 2-3, 2/10, Sea 2, Vis. good  
    18.11   Chase abandoned, in 2 hours the steamer passes out of sight.  
    20.00 DE 8143    
      SWbyS 2-3, Sea 2, 5/10    
    20.37   Crash dive for training.  
    21.51   Surfaced.  
    24.00 DE 8171    
           
    24.05.43      
      SW 3, 2/10, Sea 2, Vis. moderate, no marine phosphorescence    
    04.00 DE 7622    
      SW 2, Sea 2, 1/10    
    08.00 DE 7618    
      SSW 2-3, Sea 1, 7/10    
    12.00 DE 7568 Day's run:  Surfaced     202 nm  
                         Submerged     4 nm  
    16.00 DE 7587 Masthead in sight.  It is a drifting unmanned lifeboat, was sunk with hand grenades  
      SSW 3, 4/10, Sea 2, (mist), Vis good  
           
Sun and Moon Data 22.05.43
Sun and Moon Data 23.05.43
Sun and Moon Data 24.05.43
 
- 12 -
 
           
           
           
    continued      
    24.05.43      
    20.00 DE 7815    
      SSW 2, 3/10, Sea 2, Vis. good    
    21.55   Radio Message . . . . 2.)  On 25 May at 08.00 hours "Markworth" switch to America II Circuit.  
    24.00 DE 7764    
      W 2, Sea 1-2, overcast    
           
    25.05.43      
      SW 2, overcast, Sea 2, Vis. bad, very dark night, no marine phosphorescence    
    04.00 DE 7784    
    08.00 DP 2314 Switched to America II Circuit.  
    12.00 DP 2222 Day's run:  Surfaced  171 nm.  
      NW 1, overcast, Sea 0, Vis. moderate, (mist) (rain)    
    12.08   Crash dive for training.  
    16.00 DP 2215    
    18.51 EbyN 1, Sea 1, 7/10, (rain) Surfaced.  
    19.55   Radio Message  Occupy attack areas: "Wintermeyer" area to the north, "Markworth" south of the line CA 7698. "Bargsten" free to maneuver in the whole area.
 
        Focal point 100-meter line.  Specified sea area based on situation report from "U-129" no specific indication of traffic.  Given heavy land-based air day and night above all be alert for radar detection.  
    20.00 DP 2135    
      NE 1, 4/10, light medium-long swells, misty    
    24.00 DP 2115    
           
    26.05.43      
    04.00 DP 1325    
      NE 2, overcast, long low swells, Vis. bad misty, medium marine phosphorescence    
    08.00 DP 1235    
      SW 1, Sea 0, overcast, (rain), mist, Vis. bad    
    12.00 DP 1215 Day's run:  Surfaced       136.5 nm  
      SWbyW 1, 8/10, slight swell, strong marine phosphorescence                  Submerged     18.5 nm  
    12.45   Crash dive for training.  
    16.00 DP 1136    
    18.43   Surfaced.  
    20.00 DP 1126    
      Wind calm, 3/10, Sea flat, misty, clear horizon    
           
Sun and Moon Data 24.05.43
Sun and Moon Data 25.05.43
Sun and Moon Data 26.05.43
 
- 13 -
 
           
           
           
    continued      
    26.05.43      
    24.00 DO 3336    
           
    27.05.43      
    04.00 DO 3316    
      Wind calm, 5/10, misty, Vis. bad, (fog), medium marine phosphorescence    
    08.00 DO 3226    
    11.25   Crash dive for training.  
    12.00 DO 3136 Day's run:  Surfaced      131.5 nm  
                         Submerged    17.5 nm  
    16.00 DO 3134    
    16.25 Wind calm, 1/10, Sea like a duck pond, misty, Vis. moderate 5 nm    
    20.00 DO 3115    
    24.00 DD 8775    
           
    28.05.43 NW 1, 3/10, Sea 0, misty, Vis. bad, light marine phosphorescence    
    04.00 DD 7986    
      WNW 1, 5/10, Sea 0, strong marine phosphorescence, Vis. bad, misty, indistinct horizon    
    08.00 DD 7975    
      Heavy mist, Vis. very poor, W 1, Sea 0, 4/10    
    11.16   Crash dive for training  
    12.00 DD 7894 Day's run:  Surfaced      150.5 nm  
                         Submerged    15.5 nm  
    16.00 DD 7886    
    16.10 SW 1, Sea 1, 3/10, Vis. good Surfaced.  
    20.00 DD 7872    
    24.00 DD 7783    
      SW 1, 9/10, Sea 1, Vis. good    
           
    29.05.43      
    04.00 DD 7772    
      SW 1, 1/10, Sea 1, Vis. moderate, misty    
    08.00 DC 9991    
    11.43 SW 1, Sea 1, 2/10, Vis. moderate, light mist Crash dive for training.  
    12.00 DC 9943 Day's run:  Surfaced      120.5 nm  
                         Submerged    40.5 nm  
    16.00 DC 9918    
           
Sun and Moon Data 26.05.43
Sun and Moon Data 27.05.43
Sun and Moon Data 28.05.43
Sun and Moon Data 29.05.43
 
- 14 -
 
           
           
           
    continued      
    29.05.43      
    18.00   Surfaced.  
    20.00 DC 9835    
      SW 3, Sea 2, 6/10, Vis. good    
    24.00 DC 9554    
      WSW 3-4, 3/10, Sea 2-3, Vis. good    
           
    30.05.43      
    04.00 DC 9436    
      SW 3, overcast, Sea 2, Vis. good, light marine phosphorescence    
    08.00 DC 9189    
      NW 3, Sea 2-3, 7/10, (rain)    
    12.00 DC 9187 Day's run:  Surfaced      134.5 nm  
      NNW 3, Sea 2, overcast, Vis. good                  Submerged       18 nm  
    16.00 DC 8393    
      N 2, Sea 1, 2/10, Vis. good, misty    
    17.50   Crash dive for training.  
    19.05   Surfaced.  
    19.31   Crash dive for training.  
    20.00 DC 8364    
    21.20   Surfaced.  
    24.00 DC 8327    
      W 1, 5/10, Sea 0, Vis. good    
           
    31.05.43      
    04.00 DC 5977    
      N 1, overcast, Sea 1, Vis. bad, misty, no marine phosphorescence    
    08.00 DC 5883    
      Wind calm, Vis. moderate, heavy mist, indistinct horizon, strong marine phosphorescence    
    11.02   Crash dive for training.  
    12.00 DC 5846 Day's run:  Surfaced      143 nm  
                         Submerged     10 nm  
    13.11 Vis. good Surfaced.  
    16.00 DC 5817    
      WSW 1, 5/10, Sea 1, Vis. 12-14 nm    
    20.00 DC 5731    
      W 1, Sea 1, 9/10, Vis. good    
    24.00 DC 5448    
      SSE 1, 1/10, Sea 1, Vis. medium, indistinct horizon    
           
Sun and Moon Data 29.05.43
Sun and Moon Data 30.05.43
Sun and Moon Data 31.05.43
 
- 15 -
 
           
           
           
           
    01.06.43      
    04.00 DC 4638    
    08.00 DC 4616    
      W 1, blue sky, flat sea, Vis. moderate    
    11.41   Crash dive for training.  
    12.00 DC 4522 Day's run:  Surfaced      152.5 nm  
      SW 1, blue sky, Sea 1                  Submerged         9 nm  
    16.00 DC 4521    
    20.00 DC 4513    
    20.20   Surfaced.  
    20.53   Crash dive for training.  
    24.00 DC 4277    
           
    02.06.43      
    01.59 W 2, blue sky, Sea 1, Vis. moderate, no marine phosphorescence Surfaced.  
    04.00 DC 4182    
      SSW 5, Sea 2, blue sky    
    08.00 DC 4171    
    11.35 WSW 3, Sea 2-3, 7/10 Dived.  
    12.00 DB 6368 Day's run:  Surfaced      75.5 nm  
                         Submerged  28.5 nm  
    16.00 DB 6367    
    20.00 DB 6358    
    24.00 DB 6357    
           
    03.05.43      
    02.37 SW 3, blue sky, Sea 2-3, no marine phosphorescence Surfaced.  
    04.00 DB 6323    
    07.46   Crash dive for radar detection!  140 cm, 2 x 5 seconds duration, 5 second pause.  
    08.00 DB 6319    
    10.43 SW 4, Sea 3, blue sky Surfaced.  
    11.38   Dived.  
    12.00 DB 6343 Day's run:  Surfaced      32.5 nm  
                         Submerged     36 nm  
    16.00 DB 6348    
    20.00 DB 6371    
    24.00 DB 6374    
           
    04.06.43      
      SW 3, blue sky, Sea 2, Vis. good, no marine phosphorescence    
    02.44   Surfaced.  
    04.00 DB 6651    
      WSW 2-3, Sea 2, overcast, Vis. good    
    08.00 DB 6641    
      Vis. good    
    11.42   Dived.  
    12.00 DB 6534 Day's run:  Surfaced      51.5 nm  
      SW 2-3, blue sky, Sea 2                  Submerged     30 nm  
    16.00 DB 6522    
    20.00 DB 6521    
    24.00 DB 6513    
           
           
Sun and Moon Data 01.06.43
Sun and Moon Data 02.06.43
Sun and Moon Data 03.06.43
Sun and Moon Data 04.06.43
 
- 16 -
 
           
           
           
           
    05.06.43      
    02.45 Vis. very good, starlit Surfaced.  
    02.59   Crash dive for radar detection 150 cm, at first volume 2-3 and lower afterwards, continuous tone, no indication on magic eye.  
    04.00 DB 6268    
    05.05   Surfaced.  
    08.00 DB 6297    
      W 3, blue sky, Sea 2, Vis. good, no marine phosphorescence    
    11.40   Dived.  
    12.00 DB 6534 Day's run:  Surfaced        26 nm  
                         Submerged  48.5 nm  
    16.00 DB 6537    
    20.00 DB 6529    
    24.00 DB 6553    
           
    06.06.43      
      SW 1, 3/10, Sea 1, misty, Vis. bad    
    02.46   Surfaced.  
    03.18   Crash dive for radar detection.  
    04.00 DB 6553    
    05.10 Vis. bad Surfaced.  
    05.24   Radio Message  "Markworth" . . . . Report situation or position as soon as you are detected.  U-boat sighting report from naval square DM 26.  Attention is called to the Kommandant's Handbook Paragraph 354.  
    08.00 DB 6554    
      SW 1, blue sky, Sea 1, Vis. moderate, strong marine phosphorescence    
    11.37   Dived.  
    12.00 DB 6439 Day's run:  Surfaced      43.5 nm  
                         Submerged     18 nm  
    16.00 DB 6439    
    20.00 DB 6461    
    24.00 DB 6466    
           
    07.06.43      
    02.50 Wind calm, blue sky, misty, Vis. moderate, no marine phosphorescence    
    04.00 DB 6544    
      SE 1, blue sky, Sea 1, light marine phosphorescence, Vis. good    
    08.00 DB 6546    
    11.38 S 1-2, blue sky, Sea 1, Vis. moderate, thunderstorms, strong marine phosphorescence Dived.  
    12.00 DB 6516 Day's run:  Surfaced      52 nm  
                         Submerged  16 nm  
    16.00 DB 6518    
    20.00 DB 6518    
    24.00 DB 6542    
           

Note:   Paragraph 354 of the Commander's Handbook:  "A submarine may leave its area of attack when special circumstances or particularly efficient counteraction of the enemy, make it impossible for it to stay there.  The evacuation of the attack area must then be reported as soon as possible."
Sun and Moon Data 05.06.43
Sun and Moon Data 06.06.43
Sun and Moon Data 07.06.43
 
- 17 -
 
           
           
           
           
    08.06.43      
    02.54 S 2, 5/10, Sea 1, Vis. good Surfaced.  
    04.00 DB 6291    
      SSW 1, overcast, no marine phosphorescence, summer lightening    
    08.00 DB 6522    
    11.35   Dived  
    12.00 DB 6288 Day's run:  Surfaced      30.5 nm  
                         Submerged     36 nm  
    16.00 DB 6288    
    16.20 -      
    16.30   At periscope depth, afterwards quickly to depth A +20 meters for inbound aircraft type "Catalina".  
    20.00 DB 6286    
    24.00 DB 6294    
           
    09.06.43 SSW 1, 2/10, Sea 1, Vis. good, summer lightening    
    02.45   Surfaced.  
    04.00 DB 6291    
    08.00 DB 6522    
    12.00 DB 6276 Day's run:  Surfaced      43.5 nm  
      SSW 2, 5/10, Sea 2, Vis. good                  Submerged     16 nm  
    15.07   Sound bearing 20°T.  
    16.00 DB 6282    
    16.12   Aircraft.  
    16.15   To Action Stations!  
    16.39   Tanker bearing 355°T, target angle left 80°, 10 nm range.  
   

 

17.32

  Second tanker bearing 165°T, target angle left 50°, 10 nm range.  Both tankers protected by airships and Catalina's.  Attempt to reach an advantageous position in relation to the second tanker submerged.  To reach the first is hopeless.  At the limit of range a 3 fan on the tanker which zigs away shortly after the shot.  
        General course 20°, torpedo course 85.5°, target speed 15 knots, range = 5000 meters, target angle 82° bow left.   
        Chasing after is hopeless for me, because both are making general speed of 15 knots.  With my diesel I can make only 13-14 knots and because of the air must go around far off.  Because up to now we are unnoticed, pursuit broken off.  
    17.50   Secured from Action Stations  
    20.00 DB 6259    
    20.21   Semi-rigid airship sighted bearing 290°T, course 25°.  
    20.50 SW 2, 2/10, Sea 3, Vis. good Airship out of sight.  
    24.00 DB 6267    
           
           
Sun and Moon Data 08.06.43
Sun and Moon Data 09.06.43
 
- 18 -
 
           
           
           
           
    10.06.43      
    02.59 S 2, Sea 2, 2/10, Vis. good, summer lightening, no marine phosphorescence Surfaced.  
    04.00 DB 6268    
      SW 4, Sea 3, 5/10, heavy summer lightening    
    08.00 DB 6283    
      Vis. worsening, thunderstorms, NW 4, Sea 3, overcast    
    12.00 DB 6285 Day's run:  Surfaced        47 nm  
                         Submerged  38.5 nm  
    16.00 DB 6283    
    16.30   Flying boat "Catalina" course 200°, bearing 60°T.  
    17.10   Flying boat bearing 240°T.  
    17.11   2 flying boats bearing 60°T, to depth A -10 meters.  
    18.14   Periscope depth.  
    20.00 DB 6283    
    20.02   Masthead bearing 200°T.  
    20.18   Tanker bearing 199°T on general course 20°, 15 knots.  
    20.58 DB 6294 Single shots from tubes V and VI.  
        Target speed 13 knots, target angle 90°, range = 500 meters, depth = 8 and 5 meters.  
        After 28 seconds hit amidships.  Tanker gives off many secondary detonations, from the location of the hit from the front to the stern running upward and afterwards collapsing.  Burns immediately about the entire length with the exception of the forecastle.   2nd hit in the stern, this breaks off and sinks immediately.  Foredeck capsizes, afterwards only a sea of flames.  Tanker was over 150 meters in length, estimated "New construction 10000 GRT" had set international identification signal Lucie 74.  
    24.00 DB 6294    
           
    11.06.43 SSE 2, 8/10, Sea 2, Vis. good, summer lightening, moonlit, no marine phosphorescence    
    01.30   Foreship sunk.  
    02.53   Surfaced.  
    04.00 DB 6377    
      Light marine phosphorescence, WbyS 1, Sea 1-2, 4/10, Vis. moderate, heavy summer lightening    
    08.00 DB 6234    
    11.35 WSW 1, Sea 1, 1/10 Dived.  
    12.00 DB 6513 Day's run:  Surfaced     55.5 nm  
                         Submerged     28 nm  
    13.43   Sound bearing.  
    13.45   To Action Stations.  
    13.48   Steamer bearing 132°T, airship escort, medium size passenger steamer, speed 15 knots, target angle 90°.  
    14.05   To A +40 meters, secured from Action Stations.  
    16.00 DB 6287    
           
           
Sun and Moon Data 10.06.43
Sun and Moon Data 11.06.43
 
- 19 -
 
           
           
           
    continued      
    11.06.43      
    19.17   Quickly to A +0 meters for 2 fast land-based aircraft.  
    20.00 DB 6285    
    22.06   Quickly to A -20 meters for 2 fast aircraft.  
    24.00 DB 6294    
           
    12.06.43      
      Vis. good, moonshine, no marine phosphorescence    
    02.55 SE 1, 6/10, Sea 2 Surfaced  
    04.00 DB 6292    
    08.00 DB 6523    
      ESE 2, Sea 2, 5/10, Vis. good, heavy summer lightening and marine phosphorescence    
    11.14   White light bearing 280°, airship.  
    11.24   Dived.  
    12.00 DB 6285 Day's run:  Surfaced     50.5 nm  
                         Submerged 29.5 nm  
    12.30   Airship bearing 210°T course 70°.  
    15.40   Airship bearing 20°T course 180°.  
    16.00 DB 6294    
    16.08   Flying boat bearing 220°T, type "Martin".  
    16.17   Flying boat out of sight bearing 310°T.  
    16.29   Flying boat out of sight bearing 240°T very low, quickly to depth A -10 meters.  
    20.00 DB 6293    
    20.17   Flying boat bearing 291°T to depth A -35 meters.  
    21.02   Flying boat bearing 36.5°T to depth A -35 meters.  
    24.00 DB 6372    
           
    13.06.43      
      EbyS 3-4, 4/10, Sea 3, Vis. good, moonshine    
    01.00   Airship bearing 339°T.  
    01.36   Radio Message . . . . "Markworth" report situation or if no insights position.  
    02.50   Surfaced.  
    04.00 DB 6381    
    08.00 DB 6374    
      SE 2, 3/10, Sea 1, Vis. good    
    12.00 DB 6292 Day's run:  Surfaced     64 nm  
      Vis. medium, moonshine, light marine phosphorescence                  Submerged  15 nm  
    16.00 DB 6269    
    17.22   Flying boat bearing 270°T SE course.  
    20.00 DB 6347    
    24.00 DB 6344    
           
    14.06.43      
      SEbyE 2, 3/10, Sea 1, Vis. good, moonshine    
    02.57   Surfaced.  
    04.00 DB 6348    
           
Sun and Moon Data 11.06.43
Sun and Moon Data 12.06.43
Sun and Moon Data 13.06.43
Sun and Moon Data 14.06.43
 
- 20 -
 
           
           
           
    continued      
    14.06.43 SSW 1, 3/10, Sea 1, Vis. good    
    08.00 DB 6291    
      ESE 1, Sea 1, 1/10, Vis. good    
    12.00 DB 6291 Day's run:  Surfaced     69.5 nm  
                         Submerged    46 nm  
    16.00 DB 6292    
    19.59   Airship bearing 90°T.  
    20.00 DB 6269    
    22.45   Airship out of sight.  
    23.25   Airship bearing 65°T, NE course.  
    24.00 DB 6344    
           
    15.06.43      
    00.20 E 1, 1/10, Vis. good, no marine phosphorescence Airship out of sight bearing 145°T.  
    02.57   Surfaced.  
    04.00 DB 6348    
      Vis. medium, misty horizon, bright moonshine, no marine phosphorescence    
    08.00 DB 6264    
    11.26 SSE 1, Sea 0, 9/10, Vis. moderate, summer lightening Dived.  
    12.00 DB 6255 Day's run:  Surfaced      69 nm  
                         Submerged   40 nm  
    13.47   Airship bearing 229°T.  
    15.00   3 fighter bombers 220°T, very high.  
    16.00 DB 6255    
    17.07   Airship on the horizon bearing 315°T bow right target angle 80° course 55°, turns away and again passes from sight.  
    20.00 DB 6256    
    24.00 DB 6264    
           
    16.06.43      
    02.31   Airship bearing 272°T.  
    04.00 DB 6264    
    04.04 SW 1, rough Sea, overcast, Vis. good, no marine phosphorescence Radio Message 1.)  23 May freighter 120°, 16 knots, hunted in DE 81.  
      2.) 9 June miss on 2 large tankers.   
    08.00 DB 6373 10 June newly constructed tanker sunk with MZ, nothing since then.  All on course 20°, 15 knots, air escort DB 6280.  
        3.)  Continuous air, airship, flying boat, fighter bombers along the 200-meter line.  Enemy radar detection up to now only by night route DB 30.  
        4.) 10 x 8 torpedoes, 130 cbm.  High pressure with thunderstorms going to the east during the full moon.  
                                                      "Markworth"  
    08.43   Radio Message . . . . 4.) Markworth report situation or position, if detected.  Several sighting reports are from your operations area.  
    11.30 SW 1, Sea 1, 1/10, Vis. good Dived.  
           
           
           
Sun and Moon Data 14.06.43
Sun and Moon Data 15.06.43
Sun and Moon Data 16.06.43
 
- 21 -
 
           
           
           
    continued      
    16.06.43      
    12.00 DB 6397 Day's run:  Surfaced      67.5 nm  
                         Submerged     27 nm  
    12.34   Masthead in sight bearing 307°T.  
    12.55   To Action Stations!  
    13.10   It is a USA Coast Guard cutter type "CAMPBELL".  
    14.02   Masthead out of sight  
    16.00 DB 6623    
    17.31   Flying boat bearing 120°T, altitude 100 meters, to depth A -20 meters.  
    20.00 DB 6631    
    20.23   Aircraft bearing 180°T, 5000 meters distant.  
    24.00 DB 6632    
           
    17.06.43      
      SW 1, blue sky, Sea 0, Vis. very good, moonshine    
    02.50   Surfaced.  
    04.00 DC 4176    
    05.45   Crash dive for training.  
    05.55 SE 3, blue sky, Sea 3, Vis. good, bright moonshine, no marine phosphorescence    
    08.00 DC 4432    
    11.27   Dived.  
    12.00 DC 4543 Day's run:  Surfaced      71 nm  
      SW 2-3, Sea 2, overcast, Vis. good                  Submerged  24nm  
    16.00 DC 4551    
    20.00 DC 4551    
    24.00 DC 4555    
           
    18.06.43      
    02.24 SSE 2, 5/10, Sea 2, Vis. good, moonshine, marine phosphorescence Surfaced.  
    04.00 DC 4569    
      SW 2, 3/10, Sea 2    
    08.00 DC 4682    
    11.49   Crash dive for training.  
    12.00 DC 5471 Day's run:  Surfaced      101.5 nm  
      SbyW 2, 3/10, Sea 2, light summer lightening, no marine phosphorescence                  Submerged       23 nm  
    14.13   Surfaced.  
    15.24   Crash dive for training.  
    16.00 DC 5473    
      SSE 1, 4/10, Sea 1, Vis. good    
    20.00 DC 5481    
    20.07   Surfaced.  
    24.00 DC 5493    
      NW 2, 2/10, Sea 1, Vis. good, moonshine    
           
           
Sun and Moon Data 16.06.43
Sun and Moon Data 17.06.43
Sun and Moon Data 18.06.43
 
- 22 -
 
           
           
           
           
    19.06.43      
    04.00 DC 5573    
    08.00 DC 5556    
    11.42   Crash dive for training.  
    12.00 DC 5536 Day's run:  Surfaced      126.5 nm  
      SE 1, 4/10, Sea 1, Vis. good, bright moonshine, summer lightening, no marine phosphorescence                  Submerged     14.5 nm  
    13.25   Surfaced.  
    16.00 DC 5538    
      WSW 2-3, 6/10, Sea 2, Vis. good    
    20.00 DC 5537    
    22.40   Surfaced.  
    24.00 DC 5552    
      SW 2-3, Sea 1-2, 6/10, Vis. good    
           
    20.06.43      
    04.00 DC 5493    
      SW 2, 4/10, Sea 1, Vis. good, no marine phosphorescence    
    08.00 DC 5486    
    10.12 SbyW 2, Sea 1, 3/10 Crash dive for training, radar detection.  
    10.23   Surfaced.  
    12.00 DC 5471 Day's run:  Surfaced      112.5 nm  
      EbyS 2, Sea 1, 5/10, Vis. good, heavy summer lightening, no marine phosphorescence                  Submerged     16.5 nm  
    16.00 DC 5456    
      SW 1, Sea 0, 7/10    
    20.00 DC 5444    
      EbyS 1, Sea 0, 6/10    
    24.00 DC 5428    
           
    21.06.43      
      SbyE 1, 4/10, Sea 1, misty, Vis. bad, summer lightening, no marine phosphorescence    
    04.00 DC 5451    
      S 1-2, Sea 1, 7/10, Vis. good, moonshine    
    08.00 DC 5438    
    11.49   Crash dive for training.  
    12.00 DC 5551 Day's run:  Surfaced      182.5 nm  
      EbyS 1, 5/10, Sea flat, Vis. good, moonshine, heavy summer lightening, no marine phosphorescence                  Submerged         2 nm  
           
Sun and Moon Data 19.06.43
Sun and Moon Data 20.06.43
Sun and Moon Data 21.06.43
 
- 23 -
 
           
           
           
    continued      
    21.06.43      
    14.04   Surfaced.  
    16.00 DC 5561    
      SE 1, Sea 0, 5/10    
    20.00 DC 5567    
    24.00 DC 5821    
      SSE 1, 9/10, Sea 0, Vis. good    
           
    22.06.43      
    04.00 DC 5835    
      SE 1, Sea 0, 6/10, Vis. good, no marine phosphorescence    
    08.00 DC 5588    
    11.44   Crash dive for training.  
    12.00 DC 5588 Day's run:  Surfaced      173 nm  
      SE 1, drizzle, 9/10, Sea 0, Vis. bad, summer lightening, (thunderstorms)                  Submerged      5 nm  
    16.00 DC 5589    
    17.15   Surfaced.  
    20.00 DC 5677    
      EbyS 2, 3/10, Sea 1, 3/10    
    24.00 DC 5586    
      SbyE 2, 4/10, Sea 1, Vis. very good    
           
    23.06.43      
      SbyE 2, 3/10, Sea 1, Vis. very good, light marine phosphorescence    
    04.00 DC 5581    
    08.00 DC 5547    
    09.57 S 3, overcast (rain), Sea 2, Vis. very poor Dived.  
    10.45   Surfaced.  
    12.00 DC 5468 Day's run:  Surfaced      138 nm  
      SE 3, 5/10, Sea 2, Vis. good, moonshine, light summer lightening                  Submerged      9 nm  
    16.00 DC 5554    
    20.00 DC 5466    
      SE 3-4, Sea 3, 8/10, Vis. very good    
    24.00 DC 5451    
           
    24.06.43      
      S 2-3, Sea 3, 3/10, Vis. changing, no marine phosphorescence    
    04.00 DC 4664    
    08.00 DC 4654    
    11.26 Moonshine, marine phosphorescence Dived.  
           
           
Sun and Moon Data 21.06.43
Sun and Moon Data 22.06.43
Sun and Moon Data 23.06.43
Sun and Moon Data 24.06.43
 
- 24 -
 
           
           
           
    continued      
    24.06.43      
    12.00 DC 4569 Day's run:  Surfaced      182 nm  
      SbyE 3, 8/10, Sea 3, Vis. good, moonshine, marine phosphorescence                  Submerged      2 nm  
    16.00 DC 4568    
    20.00 DC 4591    
    24.00 DC 4583    
           
    25.06.43      
      SE 4-5, Sea 4, 6/10, Vis. good, no marine phosphorescence    
    02.32   Surfaced.  
    04.00 DC 4548    
    08.00 DC 4468    
      SE 4, Sea 4, overcast (rain), Vis. moderate to bad, light summer lightening, strong marine phosphorescence    
    09.25   Crash dive for radar detection.  
    12.00 DC 4456 Day's run:  Surfaced     40 nm  
                         Submerged  29 nm  
    16.00 DC 4458    
    20.00 DC 4458    
    24.00 DC 4481    
      SE 4-5, Sea 4, overcast (rain), Vis. medium    
           
    26.06.43      
    00.20   Radio Message  1.)  Wintermeyer and Markworth free to maneuver in entire coastal area.  
        2.) . . . . . .  
    02.54   Surfaced.  
      SE 3-4, Sea 3, 8/10, Vis. moderate, light summer lightening, strong marine phosphorescence    
    04.00 DC 4481    
      Vis. changing    
    08.00 DC 4471    
    11.25   Dived.  
    12.00 DB 6694 Day's run:  Surfaced     51.5 nm  
      SSE 4-5, Sea 4, overcast lightening, Vis. moderate, marine phosphorescence                  Submerged     27 nm  
    16.00 DB 6689    
    20.00 DB 6688    
    24.00 DB 6923    
      S 4, Sea 3-4, 7/10, Vis. moderate, medium marine phosphorescence    
           
Sun and Moon Data 24.06.43
Sun and Moon Data 25.06.43
Sun and Moon Data 26.06.43
 
- 25 -
 
           
           
           
           
    27.06.43      
    02.50   Surfaced.  
    04.00 DC 4474    
      SSE 4, Sea 4, 8/10, Vis. medium, in squalls SSE 6, Sea 5-6, Vis. very poor (under 2 nm), strong marine phosphorescence    
    06.15   Radio Message  All attack areas to occupy. . . .  
        5.)  "Markworth". . . . with coming new moon period again go close under the coast.  
    08.00 DC 4721    
      SE 3-4, Sea 3-4, 8/10, Vis. moderate, strong marine phosphorescence    
    11.24   Dived.  
    12.00 DC 4716 Day's run:  Surfaced        50 nm  
                         Submerged  29.5 nm  
    16.00 DC 4715    
    20.00 DC 4715    
    24.00 DC 4714    
           
    28.06.43      
      S 2-3, Sea 2, 6/10, Vis. good, overcast, clear horizon, no marine phosphorescence    
    02.52   Surfaced.  
    04.00 DB 6931    
    08.00 DB 6913    
      SSW 2-3, Sea 2, 3/10, Vis. good, strong marine phosphorescence    
    11.34   Dived.  
    12.00 DB 6599 Day's run:  Surfaced       48 nm  
                         Submerged  24.5 nm  
    16.00 DB 6599    
    20.00 DB 6832    
    22.55   2 flying boats, type "Consolidated PB 2Y" bearing 210°T 10000 meters distant, course 70°.  
    22.58   Flying boats out of sight bearing 100°T.  
    24.00 DB 6834    
           
    29.06.43      
    03.06   Surfaced.  
      EbyS 4-5, Sea 3, 3/10, Vis. good, strong marine phosphorescence    
    04.00 DB 6852    
    08.00 DB 6815    
    11.31   Dived.  
    12.00 DB 6217 Day's run:  Surfaced      51 nm  
      SSW 3, Sea 2, 3/10, Vis. good, summer lightening, strong marine phosphorescence                  Submerged  27 nm  
    15.31 -   Flying boat to starboard 5000 meter distant, course 100°.  
    16.00 DB 6516    
           
Sun and Moon Data 27.06.43
Sun and Moon Data 28.06.43
Sun and Moon Data 29.06.43
 
- 26 -
 
           
           
           
    continued      
    29.06.43      
    18.10   Airship bearing 0°, course 200-210°.  
    19.14   Airship out of sight bearing 265°.  
    20.00 DB 6283    
    24.00 DB 6294    
           
    30.6.43      
      SW 3-4, Sea 3, 2/10, Vis. good, summer lightening    
    03.15   Surfaced.  
    04.00 DB 6371    
      Light marine phosphorescence    
    08.00 DB 6292    
    11.30   Dived.  
    12.00 DB 6282 Day's run:  Surfaced      70.5 nm  
      SSW 3, Sea 2-3, 7/10, lightening, Vis. good, marine phosphorescence                  Submerged     24 nm  
    12.45   1st airship bearing 250°T, course 90°.  
    13.32   2nd airship bearing 30.7°T, course 40-50°.  
    15.59   3rd airship bearing 72.5°T, course 220°.  
    16.00 DB 6259    
    16.42   3rd airship out of sight bearing 159°T.  
    17.54   Flying boat bearing 162°T, course 270°, type "Consolidated PB Y 1".  
    17.58   Flying boat turns to approach went to depth A -20 meters.  
    20.00 DB 6266    
    24.00 DB 6342    
           
    01.07.43      
      S 2-3, Sea 2, 5/10, lightening, Vis. good, clear horizon    
    03.00   Surfaced.  
    04.00 DB 6351    
    08.00 DB 6371    
      Marine phosphorescence    
    10.22 -      
    10.27   Oil slick passed at the sinking location of my tanker.  
    11.30 S 3, Sea 2-3, 4/10, lightening, strong marine phosphorescence Dived.  
    12.00 DB 6283 Day's run:  Surfaced        65 nm  
                         Submerged  30.5 nm  
    15.14   Airship in sight bearing 42°T, course 220°, to depth A -30 meters.  
    15.58 S 2, Sea 2-3, 4/10, Vis. good Airship bearing 175°T, course 220°.  
    16.00 DB 6267    
    16.38   Airship out of sight bearing 208°.  
    20.00 DB 6268    
    24.00 DB 6266    
           
Sun and Moon Data 29.06.43
Sun and Moon Data 30.06.43
Sun and Moon Data 01.07.43
 
- 27 -
 
           
           
           
           
    02.07.43      
    03.00 SE 2, Sea 1 8/10, lightening, Vis. good Surfaced.  
    04.00 DB 6269    
      S 2, Sea 1-2, 7/10, lightening, Vis. medium to bad, medium marine phosphorescence    
    05.40   Shadow bearing approximately 200°T, course 40°.  Shadow is a loaded tanker, zigzagging around course 40°.  Because despite my highest speed the tanker is passing and the target angle will only grow larger I decide to attack immediately.  This tanker cannot be allowed to pass. Therefore:  
    06.07   1.)  Two-fan, target speed 14 knots, target angle 80°.  
    06.09   2.)  Two-fan, target speed 12 knots, target angle 90°.  
        With the first firing 3 shots are made due to a switch error in the conning tower Tube I      T 3  
                                    Tube IV   T 2  
                                    Tube II     T 2  
        both T 2s run at a distance of 10 meters behind each other.  As a result the second fan is only 1 shot.  Estimated range 2000 meters.  Naturally the distance again underestimated.  Hit after 5 min 6 sec.  Range was 4700 meters. Tanker transmits on 600 meters.  Because we are only 80 nm from Charleston and the tanker is still moving decide on a coup de grâce.  
        Tube VI at 1000 meters past.  
        Tube V hit in the engine room.  
    06.30 DB 6374 Tanker sinks by the stern and floats for a short time by the forecastle.  
        Measured length of the steamer more than 150 meters (binoculars and fixed range yields 160 meters)  
        Estimated target angle and speed were wrong.  At the shot the target angle was smaller and the speed higher.  The mistakes balanced themselves out and still resulted in a stern hit  
    07.08   Dived.  
    08.00 DB 6374    
    11.58   Airship bearing 296°T.  
    12.00 DB 6376 Day's run:  Surfaced     70.5 nm  
      S 2, 5/10, Vis. medium                  Submerged  50.5 nm  
    12.55   Airship bearing 290°T, circling course.  
    13.05   Flying boat bearing 290°T, course 0°.  
    15.55   Airship bears 274°T.  
    16.00 DB 6384    
    16.40   To depth A -10 meters.  
    18.00   To periscope depth.  
        Airship bearing 282°T.  
    20.00 DB 6386    
    21.56   Destroyer masthead in sight bearing 306°T.  
    22.13   Masthead out of sight bearing 293°T.  
    24.00 DB 6394    
           
Sun and Moon Data 02.07.43
 
- 28 -
 
           
           
           
           
    03.07.43      
      SW 1, Sea 1, 8/10, mist, Vis. medium, marine phosphorescence    
    02.50   Surfaced.  
    04.00 DC 4174    
    06.06   Radio Message delivered repeatedly, was not understood.  
    08.00 DC 4423    
    11.19   Dived.  
    12.00 DC 4542 Day's run:  Surfaced         81 nm  
      SW 2, Sea 1, 7/10, lightening, Vis. good, strong marine phosphorescence                  Submerged  54.5 nm  
    15.15   Flying boat bearing 254°T, course 30-40°.  
    15.20   To depth A +10 meters.  
    15.30   At periscope depth, flying boat out of sight.  
    15.45   Flying boat bearing 30°, circling.  
    15.46   To depth A -20 meters.  
    16.00 DC 4543    
    20.00 DC 4551    
      ENE 3-4, Sea 2, 7/10    
    20.44   Flying boat bearing 171°T, course 270°.  
    20.46   Flying boat out of sight.  
    21.40   Flying boat bearing 161.5°T, course 100°.  
    23.07   Flying boat bearing 135°T out of sight.  
    24.00 DC 4555    
           
    04.07.43      
      NNW 2, Sea 1-2, 5/10, Vis. moderate    
    02.31   Surfaced.  
    04.00 DC 4596    
    04.37   Radio Message again sent:  
        From "Markworth" tanker sunk DB 62, 15 knots, 20°.  Air as before, low Seas, 4 x 8, 88 cbm, 20 day's provisions. Request supply.  
        Missing serial number. . . . .  
        Situation in DC 50.  
    08.00 DC 4679    
      NW 2, Sea 1, 8/10, (rain), medium marine phosphorescence    
    09.33   Radio Message  To "Markworth" report situation or position.  
    10.00 S 1-2, Sea 1, 8/10    
    11.35   Dived.  
    12.00 DC 4934 Day's run:  Surfaced     96 nm  
      SSE 1-2, Sea 1, 8/10, Vis. moderate occasionally degraded in rain squalls, light marine phosphorescence                  Submerged  38 nm  
    13.07   Flying boat bearing 195°T, flies in circles.  
    13.10   To depth A +40 meters.  
    15.00   To depth A -20 meters.  
    15.13   To periscope depth.  
    16.00 DC 4939    
           
Sun and Moon Data 03.07.43
Sun and Moon Data 04.07.43
 
- 29 -
 
           
           
           
    continued      
    04.07.43      
    19.47   Flying boat bearing 33.5°T, course 95°.  
    19.53   Flying boat out of sight.  
    20.00 DC 5741    
    24.00 DC 5742    
           
    05.07.43      
      SbyE 2, Sea 2, 7/10, Vis. good, light marine phosphorescence    
    02.10   Surfaced.  
    02.35   Begin torpedo work topside, make ready for loading.  
    02.35 SbyE 2, Sea 2, 7/10, Vis. good, light marine phosphorescence Radio Message  1.)  . . . .  
      2.) "Markworth" reported provision stocks of 20 days appears very low.  If 10-14 days operations are still possible in a current attack area, fuel oil and provision supply is intended in DF 60.  If "no", return transit in accordance with provision stock and provision supply roughly in named position, report again.  
    04.00 DC 5754    
    08.00 DC 5765    
   

10.23             

  Torpedo loading completed.  Tubes 3 and 9 not unloaded because they were flooded.  
    11.15     Work topside completed.   
    11.37 SSE 1, Sea 1, 3/10, lightening, Vis. good, strong marine phosphorescence Dived.  
    12.00 DC 5756 Day's run:  Surfaced     54 nm  
                         Submerged  27 nm  
    16.00 DC 5755    
    20.00 DC 5754    
    24.00 DC 5746    
           
    06.07.43      
      SE 2, Sea 2, 5/10, Vis. good    
    00.05   Steamer bearing 320°T.  
        To Action Stations!  
        Steamer runs at 15 knots, Type "LASSIN" has undeployed torpedo nets.  
        Approaching with wild zigzags.  Turns sharply towards me across the bow.  Would like to shoot, because this turn is towards me contrary to his other 5-10 zigzags about 50-60° every 1-2 minutes.  Target angle 0°, range 1000 meters.  If we are lucky, because I have shown the periscope only very sparsely, he will still zigzag away.  At 250 meters, target angle 0° dive quickly but the boat does not get under.  Negative buoyancy tank flooded.  In spite of high speed and afterwards AK.  Steamer goes exactly over my No. 1 vent valve hatch.  Forces my net deflector to the side and damages the upper deck.  The spindle bearing of the flood valve for the starboard negative buoyancy tank is damaged during the ramming, it will only close at diving depths between 5 and 40 meters.  The damage cannot be repaired.  
           
Sun and Moon Data 13.07.43
Sun and Moon Data 14.07.43
Sun and Moon Data 15.07.43
 
- 30 -
 
           
           
           
    continued      
    06.07.43      
    01.05   To periscope depth, steamer bearing 140° on the horizon.  
    01.11   Secure from Action Stations.  
    01.33   Surfaced, chased after.  Again the same song.  I can only make 14-15.5 knots, the enemy runs at 15-16 knots.  I hunt several hours behind again in vain.  
    04.00 DC 8127    
      SE 2, Sea 2, 4-5/10, Vis. good    
    06.04 SbyE 2, Sea 2, 7/10, lightening, Vis. good Radio Message sent:  Day attack on tanker type "LASSIN" course 150°, rammed slightly.  4 x 6 x 2 out of service [torpedoes] 84 cbm.   Was loaded for 13 weeks.  Return transit 16 July.  Enemy radar detection on 26 June 140 cm horizontally polarized barely audible, very quiet tone, strong indication in the magic eye.  
                                                        "Markworth"  
    08.00 DC 8111    
    11.25   Dived.  
    12.00   Day's run:  Surfaced      107 nm  
                         Submerged  25.5 nm  
    16.00 DC 4956    
    17.15   Aircraft bearing 195°T, course 270°.  
    17.22   Aircraft bearing 228°T out of sight.  
    20.00 DC 4951    
    24.00 DC 4919    
           
    07.07.43      
    02.35   Surfaced.  
      SSW 3, Sea 3, 6/10, Vis. good, faint moonshine    
    04.00 DC 4941    
    08.00 DC 4852    
    11.30 SW 3-4, Sea 3, 8/10, lightening, Vis. good Dived.  
    12.00 DC 4814 Day's run:  Surfaced     78 nm  
                         Submerged  43 nm  
    16.00 DC 4738    
    20.00 DC 4738    
    23.40   7-8 detonations heard, far distant.  
    24.00 DC 4737    
           
    08.07.43      
    02.45   Surfaced.  
      SSW 4, Sea 3, 7/10, Vis. good, weak moonshine    
    04.00 DC 4751    
      SSW 3, 6/10    
    08.00 DB 6962    
    11.37   Dived.  
    12.00 DB 6919 Day's run:  Surfaced     70 nm  
      SW 2, Sea 1-2, 3/10, Vis. medium-good, light marine phosphorescence                  Submerged  29 nm  
           
           
Sun and Moon Data 06.07.43
Sun and Moon Data 07.07.43
Sun and Moon Data 08.07.43
 
- 31 -
 
           
           
           
    continued      
    08.07.43      
    15.30   Flying boat bearing 280°T.  
    16.00 DB 6942    
    20.00 DB 6941    
    24.00 DB 6863    
           
    09.07.43      
      SSE 2, Sea 1-2, 7/10, lightening, Vis. good, weak moonshine, marine phosphorescence    
    02.55   Surfaced.  
    04.00 DB 6864    
    08.00 DB 6857    
    09.45 S 2, Sea 1-2, 9/10, mist, Vis. medium, marine phosphorescence    
    09.45   To "Markworth"  
        On 5 July the Fürher awarded you the Knight's Cross.  Warmest congratulations.  
                                                Ob.dM and B.d.U.  
      EbyS 2, Sea 1, 7/10, lightening, Vis. good, strong marine phosphorescence    
    11.35   Dived.  
    12.00 DB 6762 Day's run:  Surfaced     60 nm  
                         Submerged  24 nm  
    12.52   Aircraft (land-based) bearing 7°T, course 180°.  
    14.30   2 aircraft bearing 20°T, course W.  
    15.47   Flying boat bearing 180°T, course roughly 90°. Turned towards the boat.  Went to depth A +0 meters.  
    16.00 DB 6739    
    20.00 DB 6814    
    24.00 DB 6678    
           
    10.07.43      
    02.59 SSE 3, Sea 2, 6/10, Vis. good, moonshine, light marine phosphorescence Surfaced.  
    03.55   Radio Message  To Kommandant "U-66" congratulations on the award of the the Knight's Cross, warmest congratulations from                                         F.d.U. West  
    04.00 DB 8581    
      SbyE 3, Sea 2, 5/10, Vis. good, strong marine phosphorescence    
    05.21   Radio Message  "Markworth" warm congratulations to you and your men.  Furthermore good fortune and happy homecoming.  
                                                        Chef 3. U.-Flottille  
    08.00 DB 6585    
    11.40   Dived.  
    12.00 DB 6579 Day's run:  Surfaced     49 nm  
                         Submerged  30 nm  
    15.50   Aircraft bearing 355°T, course 45°.  
    16.00 DB 6549    
    20.00 DB 6527    
    24.00 DB 6522    
           
Sun and Moon Data 08.07.43
Sun and Moon Data 09.07.43
Sun and Moon Data 10.07.43
 
- 32 -
 
           
           
           
           
    11.07.43      
    03.03   Surfaced.  
    04.00 DB 6885    
      SSW 2, Sea 1, 3/10, Vis. good, later very bad due to heavy mist    
    08.00 DB 6526    
      Vis. changing in thunderstorms, strong marine phosphorescence, overcast, rain, thunder, lightening    
    08.31   Dived.  
    08.52   Surfaced.  
    11.35   Dived.  
    12.00 DB 6524 Day's run:  Surfaced        48 nm  
      Wind calm, 6-8/10, mist, gloomy weather                  Submerged  24.5 nm  
    16.00 DB 6522    
    20.00 DB 6523    
    24.00 DB 6298    
           
    12.07.43      
    03.00 SbyE 1, 2/10, Vis. good, moonshine, marine phosphorescence Surfaced.  
    04.00 DB 6299    
    08.00 DB 6612    
    11.22   Dived.  
      SW 1, 2/10, Vis. good, indistinct horizon, strong marine phosphorescence    
    12.00 DE 6614 Day's run:  Surfaced     52.5 nm  
                         Submerged    24 nm  
    16.00 DB 6617    
    16.36   Aircraft bearing 352°, quickly to depth A +20 meters.  
    20.00 DB 6618    
    24.00 DB 6618    
           
    13.07.43      
      SSE 2, Sea 1, 4/10, Vis. good, moonshine, no marine phosphorescence    
    02.59   Surfaced.  
    04.00 DB 6619    
    08.00 DB 6665    
    11.30   Dived.  
      S 2, Sea 1-2, 2/10, mist, Vis. good    
    12.00 DC 4473 Day's run:  Surfaced     73 nm  
                         Submerged  25 nm  
    16.00 DC 4481    
    20.00 DC 4482    
    22.00   Radio Message  To Kptlt. "Markworth"  
        On the award of the Knight's Cross I send you and your brave crew warm congratulations.  
                                                   Raeder, Großadmiral  
    24.00 DC 4486    
           
Sun and Moon Data 11.07.43
Sun and Moon Data 12.07.43
Sun and Moon Data 13.07.43
 
- 33 -
 
           
           
           
           
    14.07.43      
    02.30   Surfaced.  
    04.00 DC 4492    
    05.37   Crash dive for training.  
    05.45   Surfaced.  
    07.56   Crash dive for training.  
    08.00 DC 4879 Surfaced.  
    11.34   Dived.  
    12.00 DC 4829 Day's run:  Surfaced     70 nm  
      SSE 1-2, Sea 1, 6/10, Vis. good, moonshine, no marine phosphorescence                  Submerged  24 nm  
    16.00 DC 4837    
    20.00 DC 4838    
    24.00 DC 4862    
           
    15.07.43      
    02.19   Surfaced.  
    04.00 DC 4863    
    08.00 DC 4957    
      SSE 1-2, Sea 1, 4/10, Vis. good, no marine phosphorescence    
    11.31   Dived.  
    12.00 DC 4995 Day's run:  Surfaced     76 nm  
      S 1, Sea 1, 2/10, Vis. good, moonshine, no marine phosphorescence                  Submerged  25 nm  
    16.00 DC 4999    
    20.00 DC 4999    
    24.00 DC 5777    
           
    16.07.43      
    02.22   Surfaced.  
    04.00 DC 8113    
      SSE 2-3, Sea 2, 9/10, Vis. good, bright moonshine    
    08.00 DC 8122    
    11.29   Dived.  
    12.00 DC 8134 Day's run:  Surfaced     52 nm  
      S 2-3, Sea 2, 8/10, Vis. bad, short periods of moonshine, no marine phosphorescence                  Submerged  24 nm  
    16.00 DC 8126    
    20.00 DC 8125    
    24.00 DC 8124    
           
    17.07.43      
    02.05   Surfaced.  
    04.00 DC 8122    
    08.00 DC 5776    
    11.31   Dived.  
    12.00 DC 5746 Day's run:  Surfaced     63 nm  
      SSW 2, Sea 2, 7-8/10, passing showers, mist, no marine phosphorescence, Vis. 12 nm 3 nm in passing showers                  Submerged  22 nm  
           
Sun and Moon Data 14.07.43
Sun and Moon Data 15.07.43
Sun and Moon Data 16.07.43
Sun and Moon Data 17.07.43
 
- 34 -
 
           
           
           
    continued      
    17.07.43      
    16.00 DC 5754    
    20.00 DC 5754    
    24.00 DC 5746    
           
    18.07.43      
    02.00   Surfaced.  
      SbyW 2, Sea 1-2, 2/10, Vis. good, no marine phosphorescence    
    04.00 DC 5746    
    08.00 DC 5783    
      SSE 2, Sea 2, 3/10    
    11.44   Crash dive for training.  
    12.00 DC 8122 Day's run:  Surfaced     53 nm  
      SSW 1-2, Sea 1, 2/10, Vis. good, moonshine                  Submerged  23 nm  
    16.00 DC 8124    
    20.00 DC 8121    
    24.00 DC 5787    
           
    19.07.43      
    02.25 SW 2, Sea 1, 5/10, Vis. good, no marine phosphorescence Surfaced.  
    04.00 DC 5757    
    08.00 DC 5767    
      SbyW 3-4, W 2, Sea 1, 1/10, Vis. good, bright moonshine    
    11.39   Crash dive for training.  
    12.00 DC 5782 Day's run:  Surfaced     54 nm  
                         Submerged  22 nm  
    16.00 DC 5785    
    20.00 DC 5768    
    24.00 DC 8122    
           
    20.07.43      
    01.52   Surfaced.  
    03.19   Radio Message sent:   Nothing from 67 to 62, only medium east-west sea air.  Missing Serial Numbers . . . . . 65 cbm, return transit DB 73 all naval squares.  Request Metox, because sensitivity reduced after onboard repair, high pressure weather.  
                                                             Markworth  
    04.00 DC 8126    
      S 2-3, Sea 2, 7/10, (rain)    
    08.00 DC 8241    
    11.21   Dived.  
    12.00 DC 8273 Day's run:  Surfaced     85 nm  
      SSW 3, Sea 2, 6/10, Vis. good, no marine phosphorescence                  Submerged  22 nm  
    16.00 DC 8284    
    20.00 DC 8288    
    24.00 DC 8289    
           
Sun and Moon Data 17.07.43
Sun and Moon Data 18.07.43
Sun and Moon Data 19.07.43
Sun and Moon Data 20.07.43
 
- 35 -
 
           
           
           
           
    21.07.43      
    01.51   Surfaced.  
    04.00 DC 8642    
    04.13 SSE 2-3, Sea 2, 5/10, lighting, Vis. medium Radio Message "Markworth" after supply return transit to Kiel is planned.  
    06.02   Radio Message  "Markworth" report weather during the night of 21 July.  
    08.00 DC 8691    
    12.00 DC 9714 Day's run:  Surfaced     106 nm  
      SSE 2-3, Sea 2, 4/10, lighting, Vis. good                  Submerged   26 nm  
    16.00 DC 9718    
    20.00 DC 9719    
    20.50   Surfaced.  
    24.00 DC 9756    
      SbyE 1-2, Sea 1, 5/10, Vis. good    
           
    22.07.43      
    04.00 DC 9878 Masts in sight to port, a US tanker on general course 170°. Maneuvering ahead at AK.    
      SbyE 1, Sea 1, 5/10, Vis. good  
    08.00 DN 3397    
      SbyE 1, Sea 0-1, 6/10, Vis. good, bright moonlight, moon occasionally blocked by clouds, no marine phosphorescence    
    08.50 SbyE 1, Sea 0, 5/10, Vis. good To Action Stations!  
    08.54   Dived.  
    09.16   Fan from tubes I, III, II  
    09.19   1.  Hit                    target speed = 15.5 knots  
    09.20   2.  Hit                    target angle  = 73° bow right  
    09.25   Surfaced.               range           = 2000 meters  
                                      depth          = 3 meters  
        Effect not observed because the boat dipped under again.  
        New maneuver ahead, last chance to approach the tanker in twilight, otherwise I must let it pass.  
    11.16   Fan from tubes I, III, IV    target speed = 9  
                                                 target angle  = 75° bow right  
                                                 range           = 3000 meters  
        Enemy sights bubbles track and turns away.  After discovering the boat the enemy shoots with artillery (15) cm and anti-aircraft weapons  
    11.23   Dived.  
    11.50   "Secure from Action Stations!"  
        Tanker passes out of sight with increasing list.  
        Chasing after is useless, because the seas are increasing and the starboard diesel can only run at HF and because the battery is very low because of use of the E-motor to supplement the diesels during the night.  
           
Sun and Moon Data 21.07.43
Sun and Moon Data 22.07.43
 
- 36 -
 
           
           
           
    continued      
    22.07.43      
    12.00 DN 3692 Day's run:  Surfaced     159 nm  
      SSE 2, Sea 1, 3/10, Vis. very good, no marine phosphorescence                  Submerged   17 nm  
    16.00 DN 3692    
    20.00 DN 3668    
    24.00 DN 3665    
           
    23.07.43      
    00.57 E 1-2, Sea 1, 3/10, Vis. good, moderate marine phosphorescence    
    02.17   Radio Message sent:  US tanker, 16 knots, course 170°, hunted to DN 36.  1 approach 2 hits.  Twilight miss, wild artillery shooting.  Escaped with increasing list.  2 x 2 x 2 out of service [torpedoes], 56 cbm, SE 2, Sea 2, 19 mb, 5/10, Vis. good.  
                                                           "Markworth"  
    04.00 DO 1414    
    08.00 DO 1433    
      SEbyE 2-3, Sea 2, 6/10, Vis. good, moonshine    
    11.58   Crash dive for training.  
    12.00 DO 1523 Day's run:  Surfaced     116 nm  
                         Submerged   20 nm  
    15.23   Surfaced.  
    16.00 DO 1523    
      SE 2-3, Sea 1, swells, 6/10 (rain), Vis. moderate    
    16.59   Crash dive for training.  
    19.33   Surfaced.  
    20.00 DO 1621    
    22.00   Crash dive for training.  
    24.00 DO 1397    
           
    24.07.43      
    00.43 SSE 2-3, Sea 2, 5/10, lightening, Vis. medium, no marine phosphorescence Surfaced.  
      Transferred torpedoes from the upper deck containers except for the two damaged torpedoes.  
    04.00 DO 1633    
    07.25   Torpedo transfer completed.  
    08.00 DO 1633    
    12.00 DO 2198 Day's run:  Surfaced        113 nm  
      SEbyE 2, Sea 1, 5/10, lightening, Vis. good occasionally bad in rain clouds, light marine phosphorescence                  Submerged   20.5 nm  
    12.13   Crash dive for training.  
    16.00 DO 2277    
    20.00 DO 2279    
    20.35   Surfaced.  
    24.00 DO 2296    
      E 2, Sea 1-2, 6/10, Vis. very good    
           
Sun and Moon Data 22.07.43
Sun and Moon Data 23.07.43
Sun and Moon Data 24.07.43
 
- 37 -
 
           
           
           
           
    25.07.43      
    01.16   Crash dive for training.  
    01.18   Surfaced.  
    04.00 DO 2387    
    08.00 DO 2386    
    12.00 DO 3197 Day's run:  Surfaced     112 nm  
      SEbyE 2, Sea 2, 3/10, lightening, Vis. good                  Submerged   24 nm  
    16.00 DO 3198    
    20.00 DO 3276    
    24.00 DO 3295    
           
    26.07.43      
      E 2, Sea 1, 2/10, lightening, Vis. good, 1024 mb, 27°    
    04.00 DO 3393    
    08.00 DP 1138    
    12.00 DP 1244 Day's run:  Surfaced 152 nm.  
      EbyN 2, Sea 1-2, 4/10, 1024 mb, Vis. good    
    16.00 DP 1236    
    20.00 DP 1342    
    24.00 DP 1361    
           
    27.07.43      
    04.00 DP 2146    
    08.00 DP 2165    
      EbyN 2, Sea 1-2, 5/10, Vis. good, 1022 mb    
    12.00 DP 2254 Day's run:  Surfaced 168 nm.  
    13.01   Crash dive for training.  
    14.06   Surfaced.  
    16.00 DP 2266    
      E 2, Sea 1, 3-6/10, 1022 mb, Vis. very good    
    16.32   Mastheads bearing 115°T, general course 305°, speed 16, type C 3.  
    20.00 DP 2235    
    20.30 EbyN 2, Sea 1, 4-6/10, Vis. good, 1022 mb Radio Message . . . . 3.) "Markworth" proceed via naval square DE 50.  Supply intended from "Neumann" approximately in this area.  
        4.)  Neumann make for named square.  
    24.00 DD 9942 Steamer hunted until darkness.  
           
    28.07.43      
      EbyN 2, Sea 1, 4/10, 1023 mb, Vis. good, here and there blocked by rain clouds.    
    01.33   Steamer is lost from sight behind rain clouds.  
    04.00 DD 9925    
    08.00 DE 7714    
           
Sun and Moon Data 25.07.43
Sun and Moon Data 26.07.43
Sun and Moon Data 27.07.43
Sun and Moon Data 28.07.43
 
- 38 -