M  i  n  e    D  a  t  a  .
 
  U-Boat:    U-455  
  Description of the exercise:  - -  
  Date:        18 and 19 September 1942  
  Location:  Main harbor naval square DB 3736  
     
 
A.  Mines deployed
 
  Wind direction:                 18 Sep. WSW, 19 Sep. S             Strength:  18 Sep. 1-2, 19 Sep. 2  
  Sea state:                          18 Sep. 0-1, 19 Sep. 1  
  Current direction:              North                                            Strength:  1.5 knots  
  Bottom composition:         Hard sand  
  Air temperature:                18 and 19 Sep. +27°C                 Water temperature:  +21°C  
  Time at the first mine:        18 Sep. 08.45 hours                     19 Sep. 08.22 hours  
  Time at the last mine:                      09.52 hours                                 08.54 hours  
  Speed through the water:  Changing from KF up to GF  
  Course:                            18 Sep. from 297 via 190, 305, 270 to 156°  19 Sep. from 253 via 158, 198 to 90°.
  Intened mine distance:     varable, minimum 1000 meters  
  Location of the first mine:  )  Fouling the inner half of the square.  
  Location of last mine:        )  
  Depth of the first mine:          )  8 - 14.5 meters  
  Depth of the last mine:          )  
     
 
B.  Mine Material.
 
  Number of mines deployed:    12  
  Type of mines deployed:         TMB II  
     
 
C.  Failures.
 
  Number:  
  No. of the mine:  
  From tube:  
  Forward mine, aft mine:                                          None  
  Observation at ejection:  
  Observation after surfacing:  
  Observation at clearing:  
  Cause  
     
 
D.  Special incidents.
 
     
  None  
                                          
     
 
 
Click the flag to view the above page from the original German KTB
     
     
                                                              Certification  
                            Mines deployed from    U 455   during the patrol from    22 August 1942   
                            to  20 October 1942  .  
     
        
Date of deployment
Only general location water depth between __ and __ meters
Type of mine
Number of mine

Anchor length

Antenna length
Set depth
Remarks:
Length
Ø
over
under
m
mm
m
mm
18.09.42
East coast
TMB II
1)
-
-
-
-
-
-
 
US America
  2)
 
 
10 to 15 meters
  3)
 
 
  4)
 
 
  5)
 
 
  6)
 
 
   
 
19.09.42
8 to 10 meters
TMB II
7)    409
-
-
-
-
-
-
 
  8)    411
     
 
  9)    416
     
 
  10)  418
     
 
  11)  537
     
      12)  565