Carbon monoxide poisoning on boats

Carbon monoxide poisoning on a boat? It happens, especially in recreational craft longer than 20 feet. Since 1990, carbon monoxide poisoning has killed at least 93 people while they were boating and made nearly 400 others ill.

Carbon monoxide is an invisible, odorless gas produced by incomplete combustion of fuel. Signs and symptoms include headache, nausea, dizziness, difficulty breathing, and loss of consciousness. Common sources in boats are engines, generators, heaters, and cooking ranges. Exhaust leaks allow the deadly gas to seep into enclosed areas, such as the cabin or below deck. Exhaust also can accumulate near the rear of the craft.

Steps to take to avoid carbon monoxide poisoning while boating are regular engine and exhaust inspections by a qualified technician; turning the engine off when docked or alongside another boat; keeping people clear of the rear of the boat and swim platform when running the engine or generator; not allowing swimming behind the boat with the engine idling; and installing a carbon monoxide detector in enclosed areas.

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