During World War I the British made the passenger vessel RMS Carmania into a battleship. They then disguised it as the German passenger liner the SMS Cap Trafalgar. On Sept 14, 1914 it sank a German vessel off the coast of Brazil. The vessel it sank was the real SMS Trafalgar which the Germans had disguised as the RMS Carmania.
#1 - "According to Reader’s Digest ..."
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