Sailors Three

Sailors Three released in the USA as Three Cockeyed Sailors is a 1940 British war comedy film directed by Walter Forde and starring Tommy Trinder, Claude Hulbert and Carla Lehmann. This was cockney music hall comedian Trinders debut for Ealing, the studio with which he was to became most closely associated. It concerns three British sailors who accidentally find themselves aboard a German ship during the Second World War.

Three WWII British sailors on a drunken spree in a Brazilian neutral port mistake a German ship for their own and climb aboard. It turns out to be a pocket battleship, the Ludendorff, and to the credit of the Royal Navy, the trio manages to capture the ship and all the Germans on board.

Source: Wikipedia