Directed by: George Waggner
Starring: John Wayne, Ward Bond, Patricia Neal, Scott Forbes
Question: Why did Cmdr. Gifford (John Wayne) give Ens.Caldwell a bad look when he said it was the first time he had seen a sub knocked off?
Question: Why do they look into the scope soon as it starts to rise? The view part would still be in the water.
Continuity mistake: Sometimes when they are looking through the periscope, the sub view is going the opposite direction than the periscope view is.
Duke E. Gifford: How's the picture?
Lt. Larry: Oh, all right I guess, sir... the things those Hollywood guys can do with a submarine.
Answer: A good submarine skipper ensure he always has a low periscope profile, as it's easily seen when out of the water too much. That's why he looks through the scope even while underwater, so the scope is only just out of the water.
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