That's an amazing document! I've just been looking at pages 208-210: "Errors Made By Personnel Associated With The Firing Of Torpedoes". TDC operators entering wrong numbers; crewmen accidentally firing two at once; torpedomen incorrectly controlling intake of water to the tubes, causing sub to go below periscope depth and captain unable to see results.

Several cases of conning tower flooding due to crewman closing the hatch dogs before the hatch was shut all the way. One case of a crewman's coat getting caught in the hatch.

Wow!