What is the best precaution against carbon monoxide poisoning?

The best precaution against carbon monoxide poisoning is to keep air flowing through the vessel. Proper ventilation is crucial in reducing the concentration of carbon monoxide, which can accumulate in enclosed or poorly ventilated spaces when engines are running or when using gas-fueled appliances. Ensuring that fresh air circulates can significantly lower the risk of inhaling toxic fumes, making it a primary safety measure for boaters. Effective airflow helps to dilute the concentration of carbon monoxide and prevents it from reaching dangerous levels inside the vessel.

While using a CO detector is also important, as it can alert occupants when dangerous levels are reached, it is primarily a response mechanism rather than a preventative measure. Keeping air flowing actively reduces the risks before they escalate, providing a more proactive approach to safety on the water.