In accordance with Coast Guard Regulations (46 CFR) regarding internal combustion engine exhaust manifold installations, which of the following statements is true?

Question

Accepted Answer

They may be water-jacketed and cooled by the discharge from a pump which operates only when the engine is running.

Answer

They must be fitted with a backfire flame arrester constructed in accordance with the specification regulations.

Answer

They cannot be located any closer than six inches from flammable materials such as woodwork, etc.

Answer

They must be fitted with one inch thick asbestos board and covered with #26 USCG galvanized sheet iron.

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