What is the nautical term for rooms on a ship?

The correct answer is "compartments." In nautical terminology, compartments refer to the separate sections or rooms within a ship. These areas can serve various purposes, such as living quarters, storage spaces, engine rooms, or control areas, and are essential for the organization and functionality of the vessel.

Each compartment is typically enclosed by bulkheads, which are the walls of the ship that divide the interior spaces. The arrangement and labeling of these compartments are crucial for the efficient operation and navigation of the ship, as they help in managing both the crew's daily activities and the ship's overall mission.

On a ship, decks refer to the horizontal surfaces or floors, overheads are the ceilings or upper surfaces of compartments, and bulkheads are the vertical walls. While all these terms are relevant to ship construction and layout, "compartments" specifically denotes the individual rooms or spaces, making it the most accurate choice for the question.