What is the term for the place to eat on a naval ship?

The term used to refer to the place where personnel eat on a naval ship is "mess deck." This term specifically describes the area designated for meals and communal dining for the crew and is part of the ship's overall food service operations. The mess deck serves as a key social space where sailors gather to eat and interact.

Understanding the context, "galley" refers to the kitchen where food is prepared, while "chow hall" is more commonly associated with land-based military facilities and isn't typically used on ships. Similarly, "dining room" is a general term that doesn't capture the unique terminology used in naval contexts. The mess deck is central to naval culture and routine, making it the correct term in this scenario.