U-109 IXB
Patrol No 4
My IWO was transferred to take command of U-102 VIIB.
The IIWO took his place and a substitute officer arrived.
31 January 1940
00:42 hours U-109 left port for grid AD83
03 February 1940
Grid AN41
09:13 hours ALARM! Crash dive to avoid aircraft
11:35 hours Surfaced
11:44 hours ALARM! Crash dive to avoid aircraft
19:30 hours Surfaced
04 February 1940
Grid AN14
12:00 hours ALARM! Crash dive to avoid aircraft. DCs dropped but no damage was done. Stayed submerged
12:15 hours Periscope depth - sound contact with merchant
12:29 hours Visual contact
12:58 hours SS Camerata (Medium Merchant 09), 3185 tons. Cargo: Sulfur. Crew: 56. Crew lost: 4
19 February 1940
Grid AD83 - Convoy battle
08:17 hours SS San Tiburcio (Tanker 05), 5007 tons. Cargo: Gasoline. Crew: 27. Crew lost: 18
08:17 hours SS Sprucebay (Coastal Freighter), 1871 tons. Cargo: Coal. Crew: 34. Crew lost: 14
08:18 hours SS Ledaal (Medium Merchant 11), 3129 tons. Cargo: Grain. Crew: 41. Crew lost: 28
Damaged an ammunitions ship
24 February 1940
Grid AD82 - convoy battle
07:02 hours SS Brumaire (Tanker 10), 6581 tons. Cargo: Crude Oil. Crew: 33. Crew lost: 16
Damaged a medium cargo 22
28 February 1940
Grid AD83 - convoy battle
21:00 hours SS Athos II (Large Troop Ship), 23515 tons. Cargo: Troops. Crew: 165. Crew lost: 123
All internal torpedoes expended
29 February 1940
The weather is awful. Moving external torps out of the question. Started return trip
11 March 1940
17:55 hours Docked at port.
During the return passage U-109 had to let 3 single ships and a huge convoy pass due to empty torpedo tubes
41 days at sea
6 ships sunk
43288 tons
No damages or casualties
All internal torpedoes expended - no 10,5 cm round used
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