28.340—Ventilation of enclosed engine and fuel tank spaces.

(a) Applicability. Each vessel with a gasoline outboard engine or gasoline storage tank must comply with the requirements of this section.

(b) Ventilation of spaces containing gasoline. Each space that contains a gasoline engine, a gasoline storage tank, or gasoline piping connected to an integral gasoline tank must be open to the atmosphere and so arranged as to prevent the entrapment of vapors or be ventilated by a mechanical exhaust system with a nonsparking fan. The fan motor must comply with 46 CFR 111.105-23.

(c) Alternative standards. A vessel less than 65 feet in length with ventilation installations in accordance with NFPA 302, chapter 2, section 2-2, or ABYC H-2 and 33 CFR part 183, subpart K, will be considered as meeting the requirements of this section.