46 CFR § 168.15-5
Location of crew spaces
April 15, 2021
(a) Quarters must be located so that sufficient fresh air and light are obtainable compatible with accepted practice or good arrangement and construction.
(b) Unless approved by the Commandant, quarters, must not be located forward of the collision bulkhead, nor may such section or sections of any deck head occupied by quarters be below the deepest load line.