The German ship Doggerbank (Schiff 53) was a UK cargo ship that was built in Scotland in 1926, captured by the German Navy in 1941, renamed Doggerbank and converted into an auxiliary minelayer and blockade runner. The German U-Boot U-43 (1939) sank her by mistake in 1943, leading to the deaths of all but one of her 257 passengers and 108 crew.