.-In all vessels other than country craft, a solid gas-tight bulkhead without openings, and in country craft a solid bulkhead without openings, shall be between the hold and the afterdeck where the crew are accommodated, and in vessels fitted with a poop the bulkhead shall be placed immediately in front of the poop. In decked vessels the bulkhead shall reach up to the deck, in all other vessels it shall reach to within 15 centimetres of the gunwale.
