A tester blasts a gasoline fire with the clean-agent fire extinguisher from Fireboy-Xintex.

Consider how a fire might start aboard your boat—a spark into an engine fuel leak, a spark into a propane leak, a burning bit of ash into a dry trash bin, a spoonful of flaming stove alcohol into the paper goods, an electrical short—the possibilities are many.

Now consider how far and how fast the fire might progress – through curtains, cushions, vinyl headliner, oiled and varnished wood, into more fuel supplies. No need to imagine further: A fire that gets out of control on a boat is a nightmare, and has been so since the days of wooden ships with tarred rigging and gunpowder down below. Today we have…