Hull Construction Regulations

161 No doors shall be fitted within an area described in section 160 except

• (a) doors to spaces not having access to accommodation spaces, service spaces or control stations where the boundaries of those spaces are insulated to the same standards applicable in respect of an ‘A-60’ Class division; and

• (b) navigating bridge doors where they are so designed that a rapid and efficient gas and vapour tightening of the navigating bridge can be ensured.