Seawolf's patrols from the Skagerrak to Tirpitz

Seawolf began the war with the 2nd Submarine Flotilla and attacked the cruiser Nürnberg and torpedo boat Falke in the Skagerrak without scoring a hit. The account distinguishes confirmed results from uncertain wartime claims, including an attack once associated with the transport Birma, which was probably mined the previous day. That discrepancy warns against automatically matching an observed explosion to a later loss record. Seawolf later helped search for Bismarck and sighted Tirpitz with German destroyers during the attempt to intercept convoy PQ 12.