CO Poisoning Situations: Exhaust Outlets, Slow Speed or Idling, and the Station Wagon Effect
Blocked Exhaust Outlets can cause carbon monoxide to accumulate in the cabin and cockpit area.
Another Vessel's Exhaust that is alongside can emit carbon monoxide into the cabin and cockpit of your vessel. Your vessel should be at least 20 feet from a vessel that is running a generator or engine.
Teak Surfing or dragging or water-skiing within 20 feet of a moving vessel can be fatal. If persons are using a swim platform or are close to the stern, all gasoline-powered generators with transom exhaust ports must be off.
Slow Speed or Idling causes carbon monoxide to accumulate in the cabin, cockpit, and rear deck.
Station Wagon Effect causes carbon monoxide to accumulate inside the cabin and cockpit if you are operating the boat at a high bow angle, if there is an opening that draws in exhaust, or if protective coverings are used when the vessel is underway.