2 Mar, 1944
HMS Venturer (Lt. J.S. Launders, DSC, RN) torpedoes and sinks the German merchant Thor (2526 GRT) off Stadlandet, Norway in position 62º10'N, 05º05'E. (see map)

15 Apr, 1944
HMS Venturer (Lt. J.S. Launders, DSC, RN) torpedoes and sinks the German merchant Friedrichshafen (1923 GRT) about 15 nautical miles south-south-east of Egersund, Norway in position 58º15'N, 06º00'E. (see map)

11 Sep, 1944
HMS Venturer (Lt. J.S. Launders, DSC, RN) torpedoes and sinks the Norwegian merchant Vang (678 GRT, offsite link) about 4 nautical miles east of Lista Island, Norway in position 58º03'N, 06º34'E. (see map)

13 Sep, 1944
HMS Venturer (Lt. J.S. Launders, DSC, RN) fires 3 torpedoes against the Norwegian merchant Force (499 GRT, offsite link) north-west of Egersund, Norway. All three torpedoes missed their target. Venturer then engaged the target with gunfire but the submarine was forced to break off this attack as she was fired upon by German shore batteries.

11 Nov, 1944
HMS Venturer (Lt. J.S. Launders, DSC, RN) torpedoes and sinks the German submarine U-771 in the Andfjord about 7 nautical miles east of Andenes, Norway, in position 69º17'N, 16º28'E. (see map)

9 Feb, 1945
HMS Venturer (Lt. J.S. Launders, DSO, DSC, RN) torpedoes and sinks the German submarine U-864 in the North Sea west of Bergen, Norway, in position 60º46'N, 04º35'E. This is the only known incident in all of naval warfare in which one submarine sinks another while both are submerged. (see map)

19 Mar, 1945
HMS Venturer (Lt. J.S. Launders, DSO, DSC, RN) torpedoes and sinks the German merchant Sirius (998 GRT) off Namsos, Norway in position 64º38'N, 10º36'E. (see map)