but then closed the hatch to prevent her from sinking, sacrificing himself. U-921 sailed for Trondheim, arriving 26 May 1944, under command of her I. WO (1st Wachoffizier) Leutnant zur See Hans-Joachim Neumann. On 24 September 1944, 20 days into her second war patrol, U-921 sent her last radio transmission from , west of Bear Island in the Norwegian Sea, in which she stated that, due to unspecified damage, she needed to return to port. U-921 was ordered to continue to operate against Convoy RA 60 and postpone her return. On 2 October 1944 she was listed as missing when, after the end of the convoy battle, she failed to return to Narvik. Wolfpacks U-921 took part in one wolfpack, namely: Grimm (9 September — 2 October 1944) References Bibliography External links German Type VIIC submarines U-boats commissioned in 1943 World War II submarines of Germany Ships built in Rostock 1943 ships Maritime incidents in September 1944 World War II shipwrecks in the Norwegian Sea Missing U-boats of World War II