CARBON MONOXIDE (CO) POISONING
Carbon monoxide is an odorless, colorless, tasteless gas that can be toxic
even in small quantities and is produced by internal combustion engines,
generators, and other equipment commonly used by boaters. The effects of carbon
monoxide can overcome people who are on and around boats. The symptoms of CO are
so similar to sea-sickness (nausea, dizziness, mild headache, light-headedness)
many boater may not know they are suffering effects of CO.
Recreational boaters need to be aware of carbon monoxide poisoning prevention:
- Keep fresh air flowing through the boat.
- Obtain regular professional boat inspections.
- Install and maintain carbon monoxide detectors in living spaces.
- Know the hazards of “teak surfing” and dragging. These activities place
the person in direct proximity of engine exhaust fumes containing CO.
- Investigate exhaust leaks from CO sources, such as engines, generators,
grills and propane appliances.
- Know that some specific boat design features are of concern, especially
houseboats, that emit generator exhaust at or near swim platforms.
- Be aware of the danger of swimming near the stern of the watercraft
while generators, engines or other carbon monoxide producing equipment are
in operation.

Generator exhaust and swim platforms are a deadly combination. When the generator is running, CO builds up in the swim platform cavity, as well as rear deck space. CO levels can be so high that it creates an imminent danger of death for anyone who enters the cavity even for a very short period of time. CO poisoning is an extremely dangerous matter that could result in serious injury or death. All boat owners must heed this warning.
Treatment of CO Poisoning
- Evacuate – Move the person to fresh air. Seek immediate
medical attention.
- Ventilate - Open doors, windows, hatches and canopies.
- Investigate – Find the source of the CO and take corrective measures to
prevent further contamination.
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