No sexual content or nudity in the entire film

Many deaths from sinking ships. Ships being damaged and sinking is shown but not deaths.

2-3 severe combat injuries show but little of the blood and gore.

Severe combat injuries briefly described.

Many deaths shown

Taut, suspenseful wartime action on the ocean. A convoy of Allied ships faces off against a "wolf-pack" of Nazi submarines in an extended battle. There's torpedo fire, machine-gun fire, depth charges, cannons, artillery. Ships and submarines are hit, catch fire, and explode. One bloody, wounded sailor is briefly on camera, but there are very few closeups of the injured and the dead. A sad scene takes place as three crewmen are buried at sea.

1 F-word, A few other mild profanites.

2 Son-of-a-bitch

One "damn," one "hell," and one "fuck," for which the sailor apologizes.

Lots of coffee used for the caffeine stimilant.

Almost constant combat and several near misses on the featured ship and its crew.

Dead bodies are seen in water.