Kenneth John Jeffery was found collapsed on the deck of his boat, Mais Oui, in the Old Harbour on 16 February.
An inquest this week heard that the 73-year-old was overcome by fumes from the boat’s engines and died from carbon monoxide poisoning.
Now, Ports of Jersey has issued a safety bulletin offering advice to boat owners.
It recommends that carbon monoxide detectors should be fitted in parts of the boat where the gas could accumulate, especially in accommodation areas.
It states that only alarms which meet the safety standard EN50291-2:2010, which are designed for marine use, should be fitted.
The bulletin also recommends that the use of canopies should be avoided as it can increase the risk of fumes entering the vessel. All spaces should also be well-ventilated, its adds.
Symptoms of carbon monoxide poisoning include dizziness, headache, nausea, vomiting, fatigue and shortness of breath.
Boat owners who feel they may be suffering the effects of poisoning should cut the engine immediately and get into the open air.
Delivering his verdict, Relief Coroner Advocate Cyril Whelan said Mr Jeffery was ‘found collapsed and unresponsive on the deck of the cockpit and near to the helm of his boat’.
He continued: ‘The tented canvas cover over the cockpit of the boat was in place with the access zips open, and one of the boat’s two engines was still running.
‘He was in a confined space and was overcome by the exhaust fumes of the boat’s engines – death was due to carbon monoxide poisoning.’
