46 C.F.R. § 109.333 Fire main cutoff valves.
Title 46 - Shipping
The master or person in charge shall insure that each fire main cutoff valve is open and sealed to prevent closing, except that a cutoff valve may be closed to protect the portion of the fire main system on an exposed deck from freezing.
Title 46: Shipping
PART 109—OPERATIONS
Subpart C—Operation and Stowage of Safety Equipment
§ 109.333 Fire main cutoff valves.
