German submarine U-1165 was a Type VIIC/41 U-boat built for Nazi Germany's Kriegsmarine for service during World War II.She was laid down on 31 December 1942 by Danziger Werft, Danzig as yard number 137, launched on 20 July 1943 and commissioned on 17 November 1943 under Oberleutnant zur See Hans Homann.