F.d.U./B.d.U.'S War Log

16 - 31 March 1940

PG30260

     
 
 
 
Date
Position, Wind, Weather
 
and
Sea State, Illumination,
Events
Time
Air Pressure, Moonlight etc.
 
 
 
   
 
16.3
          For operation and orders for the Atlantic boats, except U 28 and U 32, which are still on their way back, see Appendix 1 to B.d.U.'s War Log.
 
 
 
17.3
          Nothing to report.
 
   
 
18.3
          Nothing to report.
 
   
 
19.3
          Nothing to report.
 
   
 
20.3
          Nothing to report.
 
   
 
21.3
          Nothing to report.
 
   
 
22.3
          Nothing to report.
 
   
 
23.3
          U 28 and U 32 entered port.  The boats took a particularly long time on their return passage through the North Sea as they had very heavy head seas.
 
   
 
          U 28:  Minelaying operation square 3163 BF.  She carried it out according to plan on a new moon night.  The position of the minefield gap was fixed by observing shipping traffic.  The boat found the Channel coast darkened, including lights at sea.  She encountered little traffic during the entire patrol, including the Channel.  She sank:
 
 
1) Darkened steamer
about
6,000
tons
2) Darkened tanker
"
6,000
"
   
"
12,000
tons
 
          The commanding officer's way of tackling the operation was good.
 
   
 
  U 32: Minelaying operation square AM 9322.  Carried out according to plan during a new moon night.  The mines are in an excellent position.  So far no definite successes are known, but this is in itself unimportant and can be attributed to the fact that the enemy is gradually beginning to understand the need for more complete radio silence and other security measures.
 
          Once the boat was undoubtedly picked up by echo-ranging gear at a considerable depth, while bottomed.  This fact confirms the view, based on the experience and observations of other boats, that the enemy has 2 types of echo-ranging gear:  one horizontal and one vertical, which give accurate results once the boat has been picked up, but are unreliable if the boat is at great depth close to the bottom or lying on the bottom.
 
          In addition to mines, this boat also had 7 torpedoes, but 5 of these were failures and 2 misses.
 
          Apart from her well-executed minelaying operation, she only sank the Swedish S.S. "Lagaholm", 2,818 tons, carrying contraband, with gunfire.
                 
                                  
 
 
- 109 -
 
     

 

     
 
 
 
Date
Position, Wind, Weather
 
and
Sea State, Illumination,
Events
Time
Air Pressure, Moonlight etc.
 
 
 
   
 
24.3 - 31.3
          Nothing to report.
 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
                                       (signed):  Donitz
 
                                         Rear Admiral and B.d.U.
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
                 
                                  
 
 
- 110 -
 
     

 


 

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