Mess Deck
The enlisted mess deck serves as an all-purpose meeting space for the enlisted men on board. Here meals are served, movies and games are enjoyed, and classes are taught. One of the largest spaces on the sub, the mess deck can fit about one-fourth of the crew at one time.
Diagrams reprinted from Tom Clancy's Submarine: A Guided Tour Inside a Nuclear Warship, Laura Deninno, Series Illustrator.