Carbon monoxide is an odorless, colorless, tasteless gas that can be toxic in even small quantities. It is produced by engines, generators, grills and other equipment commonly used by boaters. Every year people who recreate on and around boats are overcome by the effects of carbon monoxide. Recreational boaters need to be aware of carbon monoxide poisoning prevention practices such as regular professional boat inspections; the installation and maintenance of marine rated carbon monoxide detectors in living spaces; trusting the detector when the alarm is sounding; the hazards of “teak surfing”; exhaust leaks from CO sources, such as engines, generators, grills and propane appliances; specific boat design features of concern; and the danger of swimming near the stern of the watercraft while generators, engines or other carbon monoxide producing equipment is in operation.