46 C.F.R. § 169.734 Fire extinguishing system controls.
Title 46 - Shipping
Each control cabinet or space containing valves or manifolds for the various fire extinguishing systems must be distinctly marked in conspicuous red letters at least 2 inches high: “CARBON DIOXIDE FIRE EXTINGUISHING SYSTEM,” or “HALON FIRE EXTINGUISHING SYSTEM,” as appropriate.
Title 46: Shipping
PART 169—SAILING SCHOOL VESSELS
Subpart 169.700—Vessel Control, Miscellaneous Systems, and Equipment
Markings
§ 169.734 Fire extinguishing system controls.
