(a) A crew accommodation space and a work space must be of sufficient size, adequate construction, and with suitable equipment to provide for the safe operation of the vessel and the protection and accommodation of the crew in a manner practicable for the size, facilities, service, route, and modes of operation of the vessel.

(b) The deck above a crew accommodation space must be located above the deepest load waterline.

Overnight accommodations must be provided for crewmembers if it is operated more than 12 hours in a 24-hour period, unless the crew is put ashore and the vessel is provided with a new crew.

The condition of the crew accommodations must consider the importance of crew rest. Factors to consider include vibrations, ambient light, noise levels, and general comfort. Every effort must be made to ensure that quarters help provide a suitable environment for sleep and off-duty rest.