Coast Guard Approved fire extinguishers are required on boats where a fire hazard could be expected from the motors or the fuel system. Extinguishers are classified by a letter and number symbol. The letter indicates the type fire the unit is designed to extinguish (Type B for example are designed to extinguish flammable liquids such as gasoline, oil and grease fires). The number indicates the relative size of the extinguisher. The higher the number, the larger the extinguisher.
Coast Guard approved extinguishers required for boats are hand portable, either B-I or B-II classification and have a specific marine type mounting bracket. It is recommended the extinguishers be mounted in a readily accessible position, away from the areas where a fire could likely start such as the galley or the engine compartment.
Extinguisher markings can be confusing because extinguishers can be approved for several different types of hazards. For instance, an extinguisher marked "Type A, Size II, Type B:C, Size I" is a B-I extinguisher.
Look for the part of the label that says "Marine Type USCG"
|Classes||Foam (Gals)||C02(lbs)||Dry Chemical (lbs)||Halon (lbs)|
|B-I(TypeB, Size II)||2.5||15||10||10|
Fire Extinguishers are required on boats when any of the following conditions exist:
Inspect extinguishers monthly to make sure that:
Fire extinguishers that do not satisfy the above requirements or that have been partially emptied must be replaced or taken to a qualified fire extinguisher servicing company for recharge.
The number of fire extinguishers required on a recreational boat are based on the overall length of the boat. The following chart lists the number of extinguishers that are required. In the case where a Coast Guard approved fire extinguishing system is installed for the protection of the engine compartment, the required number of units may be reduced in accordance with the chart.
Minimum number of hand portable fire extinguishers required
|Vessel Length||No Fixed System||With approved Fixed Systems|
|Less than 26'||1 B-1||0|
|26' to less than 40'||2 B-1 or 1 B-II||1 B-I|
|40' to 65'||3 B-I or 1 B-II and 1 B-1||2 B-1 or 1 B-II|
The pressure gauge alone is not an accurate indicator that Halon extinguishers are full. The weight of the units should be checked regularly. It is recommended that portable extinguishers be mounted in a readily accessible position.
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