Throughout 1943 torpedo performance remained poor , but the following year witnessed a revolution in the behavior of the Mark 13 .
New planes outdated ( the ) Torpedo Mark 13 , but drag rings and stabilizers renewed its usefulness .
Throughout 1943 torpedo performance remained poor , but the following year witnessed a revolution in the behavior of the Torpedo Mark 13   .
New planes outdated ( the ) Torpedo Mark 13 , but drag rings and stabilizers renewed its usefulness .