Think of camping on an outrigger dive boat in the tropics. There are 4 bunks on board below the main deck. Each bunk is good for 2 divers, so a maximum of 8 divers can sleep on board. The whole bottom of the bunk is covered by one big mattress. There are some small shelves and nets for personal belongings. There are some small windows for fresh air. Another option is to take a mattress out on the webbing between the outriggers. You can sleep under the sparkling stars, if weather permits. There is only one bathroom on board the ship.