The Water Safety Team has reminded boat users and water-goers that you cannot see, smell or taste carbon monoxide and it can build up quickly in cabins or enclosed spaces.
Sources of the gas include engines, generators, cookers, and heaters.
Boat users are advised to ensure that vessels are well ventilated at all times and that fuel-burning appliances are serviced regularly.
They are also urged never to run engines or generators in enclosed or poorly ventilated areas.
Penarth RNLI recommends installing a marine-grade carbon monoxide alarm before setting off and to double check it’s working.
A spokesperson for the Water Safety Team said: “Carbon monoxide is a silent killer.
“You can’t see, smell or taste it, but it can build up quickly in cabins and enclosed spaces from engines, generators, cookers, and heaters”.
Spring and summer typically see an increase in boating activity, prompting renewed safety reminders.
Further information and safety advice are available on the RYA website.
