Your vessel has a gasoline engine and a mechanical exhaust ventilation system. BEFORE starting the engine. How long do regulations require the exhaust blower to run prior to starting the engine?

Question

Accepted Answer

Until at least one complete change of air in the compartments is accomplished

Answer

Until it has provided a proper supply of fresh air to the engine(s)

Answer

Until it ensures that the system is in good operating condition

Answer

Until it warms up the exhaust blower motor

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