Audio problem: During the "Whale of a Tail" scene, there are several instances when Kirk Douglas' hands are away from the guitar strings, to ring the bell or twirl the guitar, yet the sound of the guitar strumming continues without missing a beat.
Audio problem: After the order "Beat to Quarters" is given, the Senior Petty Officer shouts orders, but no sound is heard from him. Further, the crew runs around shouting and no sound is heard from them.
Answer: To see what kind of men they are, especially Ned Glass. They held on to the sub against the harshness of the ocean. They did not scream, cry, or beg for mercy.