This has become a are and hard to find Movie 
The overall plot of this movie is somewhat unique. The sub's new commander, Paul Turner (Bentley) has strict orders not to fire on other ships, to avoid giving away his reconnaissance mission, and while the orders make some sense and he even goes out of his way to share them with his officers, the tension over them steadily grows as they pass up one target after another and even come under fire from one of their own ships.
Adding to his difficult situation was the decision to have him replace a popular ship captain and promote him above another officer, who winds up being his second-in-command. I could see how both those decisions could create additional tension considering he was unproven as a commander.