Boat fires are a real possibility, so having the right fire extinguisher - like a Mariner, from Kidde - can make the difference between making port or making headlines. Mariner Fire Extinguishers meet U.S. Coast Guard standards for hand-portable extinguishers and are effective on flammable fuels - gas, oil and grease. This B:C Mariner Fire Extinguisher expels a sodium bicarbonate fire fighting agent that won't fuse with or damage metal surfaces and is especially effective on gasoline or electrical fires. Plus, cleanup is easier and less expensive.