The Irish sea was a tempting area for the U-boats; through it went all the North Atlantic convoys heading to and from Liverpool. The area was heavily patrolled though and the wolfpacks operated mostly further out on the expected convoy route. All the boats lost here apart from U-33 (Kptlt. Hans-Wilhelm von Dresky), sunk in 1940 and U-400 (Kptlt. Horst Creutz), sunk in late 1944, were lost in 1945.
U-boats lost in the Irish Sea and North Channel during WWII
This map shows U-boats lost in the Irish Sea and North Channel during WWII. The red line shows the approximate route of the North Atlantic convoys to Liverpool.