It depends of the compartment of course, some are more important than others, but a general compartment I believe might be termed a 'berth.'
On a cruise ship it is called a cabin or berth. On a military vessel or merchant ship it is called a compartment.
It was called unsinkable because it had sixteen water tight compartment and if five flooded the ship could still keep moveing with out sinking
Bilge
a brig is a ship and a compartment of a ship that is a jail cell.
Bilge
An afterpeak is the compartment nearest the stern in the hold of a ship.
Some are called rooms - Engine Room, Chart Room. Some are compartments - Sleeping Compartment Some are called cabins - Captain's Cabin But a lot are just called "spaces" - Office Space
ihdaoi
I is called a "Stall"
A ship called she because a ship is always WET
A ship called she because a ship is always WET
The Confederate ship was called the Merrimack and the Union ship was called the Monitor.