Deck General · Fixed Fire Systems
A vessel's fire main is primarily used to supply water to which firefighting equipment?
- AFixed CO2 total-flooding systems
- BFire hoses and monitor nozzles throughout the vessel✓ Correct
- CAutomatic sprinkler systems in accommodation spaces
- DFoam proportioning systems in cargo holds
Explanation
The fire main is a pressurized seawater piping system running throughout the vessel with hydrant outlets at regular intervals. Fire hoses (typically 2.5-inch or 1.5-inch) connect to these hydrants to deliver water to any area of the vessel. The fire main may also supply monitors (fixed water cannon) on exposed decks. CO2 and foam fixed systems have separate dedicated piping.
Authority: Firefighting (USCG deck topic)
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