46 CFR § 108.137
Bulkhead and deck separations of accommodation spaces
April 15, 2021
Each boundary bulkhead and deck that separates an accommodation space or control station from the following must be an A class bulkhead and A class deck respectively—
(a) Machinery space;
(b) Galley or combination galley and messroom;
(c) Main pantry;
(d) Classified space;
(e) Store room.