View all text of Subjgrp 57 [§ 169.730 - § 169.755]
§ 169.747 - Watertight doors and hatches.
Each watertight door and watertight hatch must be marked on both sides in at least 1-inch letters: “WATERTIGHT DOOR—CLOSE IN EMERGENCY” or “WATERTIGHT HATCH—CLOSE IN EMERGENCY”, unless the markings are deemed unnecessary by the Officer in Charge, Marine Inspection.