Lex Anteinternet: Sunday, July 18, 1943. Blimp attack.

Lex Anteinternet: Sunday, July 18, 1943. Alexander appointed governo...: The U.S. airship K-74 depth charged the German U-134, which returned fire with its 20mm deck guns. The K-74 was shot down.  The unsuccessful attack was the only such instance of an airship attacking a submarine during World War Two.

K class airship.