middle of Convoy..Battleship and a small destroyer on either side of me..palms sweating...all measurements and settings checked and rechecked...900m away..700m..500.."LOS!", swing periscope around "LOS!", and fire a salvo of 4 torps at the destroyer and 1 measly eel at the battleship (all at gyro settings of 180 degrees to boot)
I blame a strong sudden current for having swung my sub around end-to-end without the crew having realized..