46 C.F.R. § 97.37-60 Watertight doors.
Title 46 - Shipping
Quick-acting Class I watertight doors fitted in accordance with the requirements in §170.255(d) of this chapter must be marked “KEEP THIS DOOR CLOSED”. [CGD 80–129, 51 FR 33059, Sept. 18, 1986]
Title 46: Shipping
PART 97—OPERATIONS
Subpart 97.37—Markings for Fire and Emergency Equipment, Etc.
§ 97.37-60 Watertight doors.

