8m cabin cruiser under Brittania Bridge put out a Mayday, believing that they had a fire on board. Tha Lifeboat attended and on arrival found black smoke coming from the boat. 5 of the 7 people on board were taken ashore. The smoke diminished and the hull was cool so the boat was towed to a mooring off Port Dinorwic - the last remaining persons on board were taken to Menai Bridge and the Lifeboat returned to station.
Weather - Fine, Light SW breeze.