CARBON MONOXIDE
Burning a material containing carbon produces carbon
monoxide (CO), an odorless and colorless gas. You cannot
see or smell CO. Because it weighs the same as air, it can
spread throughout an enclosed space without your
knowledge. Any device used to burn carbon based
materials on your boat or those around you can be a
source of CO. Common sources of carbon monoxide
include internal combustion engines and open flame
devices such as charcoal grills.
The lungs absorb carbon monoxide that then reacts with
the blood to reduce the blood’s ability to carry oxygen. The
reduced oxygen supply to body tissues results in death of
the tissue. Prolonged exposure can cause death.
In high concentrations, CO can be fatal within minutes. The
effects of CO in lower concentrations are cumulative and
can be just as lethal over long periods of time. Symptoms
of CO poisoning include: itchy and watering eyes, flushed
appearance, throbbing temples, inability to think
coherently, ringing in the ears, tightness across the chest,
headaches, drowsiness, nausea, dizziness, fatigue,
vomiting, collapse and convulsions.
If you observe any of these symptoms, begin treatment
immediately. Prompt action can make the difference
between life and death. Evacuate the area and move the
victim to fresh air. Administer oxygen if available and get
medical help. Open all canvas to ventilate the area.
Investigate the source of CO and take immediate
corrective action; be especially aware of sources adjacent
to the boat.
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