Motorboats between 26 and 40 feet must have two B-I extinguishers.
B-I is either 2 pounds dry chem, 4 pounds CO2 or 6 quarts foam.
According to US Coast Guard regulations.
NOTE: When a fixed fire extinguisher system is installed in the machinery space(s), it will replace one B-I type portable extinguisher.
Different regulations may apply to uninspected passenger vessels, including those "carrying not more than six passengers, including at least one passenger-for-hire" and for vessels in "international waters".
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Caravelle boats are no longer made. They were motor boats that were 18 to 28 feet. They were used for fishing.
all boats except anything without a motor that is under 12 feet in length
10 feet
Century Boats is a company that has manufactured fishing boats for over eighty years. The boats vary in size from seventeen long feet to thirty-two feet long.
According to US Coast Guard regulations: Fire extinguishers are required if any one or more of the following conditions exist (with certain exceptions): 1. Closed compartment under thwarts and seats wherein portable fuel tanks may be stored. 2. Double bottoms not sealed to the hull or which are not completely filled with flotation material. 3. Close living spaces. 4. Closed stowage compartments in which combustible or flammable materials are stowed. 5. Permanently installed fuel tanks. Exceptions: Boats under 26 feet, with only outboard motors, with "the construction of such motorboats will not permit the entrapment of explosive or flammable gases or vapors", and with no passengers for hire, does not need ANY fire extinguishers (but why wouldn't you anyway?). Otherwise: Up to 26 feet: one B-I extinguisher; or NONE, if there is a fixed fire extinguisher in the machinery space (engine compartment); Over 26 but under 40 feet: two B-I extinguishers, or one, if there is an engine extinguisher; Over 40 feet but not over 65 feet: three B-I, or two, if there is an engine extinguisher. Note that two B-I extinguishers may be substituted for a B-II extinguisher. Additional regulations apply to "Motor Vessels" and "barges" over 50 tons. It depends on the size of the boat and the jurisdiction it's in. Check your local boating regulations if you have any questions about this whatsoever.
boats and feet
Two 2-pound dry chemical extinguishers, or other approved B-I extinguishers.According to US Coast Guard regulations for motorboats, 46 CFR 25.30:Motorboats at least 26 but under 40 feet: two B-I extinguishers, or only one, if there is a fixed-type extinguisher in the machinery area.