46 CFR § 97.37-13 - Fire extinguishing system controls.

The control cabinets or spaces containing valves or manifolds for the various fire extinguishing systems must be distinctly marked in conspicuous red letters at least 2 inches high: “[STEAM/CARBON DIOXIDE/CLEAN AGENT/FOAM/WATER SPRAY—as appropriate] FIRE APPARATUS.”.

[USCG–2006–24797, 77 FR 33881, June 7, 2012]