Crewsaver has issued a warning to consumers that repeated over-tightening of the CO2 gas cylinder into a pale blue operating head may cause wear in the moulding. They warn gas could escape when the jacket is inflated.

According to Crewsaver, the remedy is simple and requires only removal of the gas cylinder and checking the operating head has an 'O' ring seal. If it has, there's no problem.

If there is no 'O' ring seal, Crewsaver will supply them free of charge. Fitting the 'O' ring is a simple operation - just put it in and tamp it in place, then screw the gas cylinder back in. The jackets do not have to be returned to the manufacturers.