OUPV & 100-Ton Master · Required Equipment
A backfire flame arrestor is required on:
- AAll diesel-powered vessels
- BVessels equipped with LPG stoves
- CInboard gasoline engines (except outboard motors)✓ Correct
- DSailing vessels with auxiliary power
Explanation
Each inboard gasoline engine — other than outboard motors — must be fitted with an approved backfire flame arrestor. Diesel engines do not require one because diesel vapor is far less flammable.
Authority: 46 CFR 25.35
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