AhaBulb: Stuff Everyone Should Know · ahabulb.com/boat-fire-extinguisher-class-b
Boat fire extinguishers must be Class B. What kind of fire is Class B made for?
Flaming liquids like gasoline, oil and grease.
- Wood and paper
- Flaming liquids like gasoline and oil ✔
- Burning metals
Why: The Coast Guard guide says required boat extinguishers are Class B, marine type. Class B fights flaming liquids such as gasoline, oil and grease, the main fire risk around engines and fuel.
Huh, didn't know that: Required boat extinguishers come in 5-B, 10-B or 20-B sizes and must come with a mounting bracket.
Why did the firefighter wear red suspenders? To hold his pants up.
Like this card?
References
Answer: Flaming liquids like gasoline and oil. The Coast Guard guide says required boat extinguishers are Class B, marine type. Class B fights flaming liquids such as gasoline, oil and grease, the main fire risk around engines and fuel.
- USCG A Boater's Guide to the Federal Requirements for Recreational Boats (2023) www.uscgboating.org/assets/1/AssetManager/Boaters-Guide-to-Federal-Requirements-for-Receational-Boats-20231108.pdf
Class B, for example, is designed to extinguish flaming liquids, such as gasoline, oil, and grease.
Checked 2026-10-08.
Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.
More stuff everyone should know
Boating & WaterA 20-foot inboard motorboat with no built-in fire system needs at least how many 5-B extinguishers?Boating & WaterFederal rules say a recreational boat must carry how many wearable life jackets?Boating & WaterAt what boat length does federal law add a throwable flotation device to the wearable ones?
That's stuff everyone should know.