Hull Construction Regulations

174 (1) Subject to subsections (2) and (3), doors that give access to either of the two means of escape referred to in subsection 173(1) shall not be fitted with locking devices of any kind.

(2) A crash panel or locking device may be fitted to a door that gives access to either of the two means of escape referred to in subsection 173(1) if the crash panel or locking device is capable of being easily forced in an emergency and a notice that sets out the manner of opening the door in an emergency is permanently attached in a conspicuous place on each side of the door.

(3) An outside door of a deckhouse may be fitted with a lock if the lock is operated by a key only and the key is under the control of one of the ship’s officers.