M  i  n  e    L  i  s  t  !
     
  U-Boat:    "  U  9  "  
 
Concerning
  
  Mining task:  Albatros  
  On 10.02.40  
  Location:  Cromarty Firth.  
     
 
A.  Mine Deployment.
  
 
1.) Leader of the deployment:  Oblt z.S.  L  ü  t  h.
2.) Wind:  S 2
3.) Sea:  2
4.) Current:  NE 0.5 knots
5.) Bottom composition:  rock and stone.
6.) Time of the 1st mine:  02.54 hours
7.)      "       "    last mine:  03.52 hours
8.) Speed through the water:  4 knots
9.) Courses:  50°, 110°, 60°.
10.) Intended mine interval:  1100 meters
11.) After the deployment actual mine interval:  ./.
12.) Location of the mines:
          First mine:  Latitude = 57°49.2'N, Longitude = 3°46.0W.
          Last mine:        "      = 57°49.9'N,        "        = 3°37.5'W.
13.) Location of the mines was determined by:  Plotting, soundings.
14.) Details are accurate based on:  bearings from Tarbat Ness with the 1st and last mine.
15.) Steered depth:  12.5 meters
16.) Fluctuations in depth control:
                                      Highest:  12.5
                                      Lowest:  12.0
   
 
 
B.  Failures:
  
     
 
N  o  n  e.
  
     
 
C.  Special Events:
  
  Minefield was laid 2 hours after high water.  Malfunctions and difficulties did not occur.  Ship's position was checked by bearings from Tarbat Ness shortly before diving and the same just after surfacing.  The northeast current shortened the deployment time, because the boat was carried in the course direction.  The soundings with echo sounder were checked before diving with Elektrolot [explosive locating].  
 
   
                     
 
 
 
Click the flag to view the above page from the original German KTB
     
     
 
S  o  u  n  d  i  n  g  s    L  i  s  t  !
  
     
 
U-Boat:    "  U  9  " Location of the first mine Latitude 57°49.2'N,
Mine Exercise:  Albatros.                                       Longitude 3°46.0W.
on 10.02.1940. Location of the last mine  Latitude 57°49.9'N,
Location:  Cromarty Firth                                        Longitude 3°37.5W.
  Sounding means:  Echolot
  Accuracy:  checked with Elektrolot.
 
     
 
Mine
Serial No.
Soundings
Depth steered
Water depth
Remarks
1
     25 meters
     12.5 meters
     22 meters
  
2
25     "
12.2     "
22     "
  
3
25     "
12.4     "
22     "
  
4
27     "
12.5     "
24     "
  
5
27     "
12.5     "
26     "
  
6
27     "
12.3     "
24     "
  
7
27     "
12.2     "
24     "
  
8
28     "
12.5     "
25     "
  
9
32     "
12.5     "
29     "