WHY TEST YOUR LIFEJACKET ? The majority of yachtsmen never, ever use their lifejackets. They may wear them on deck but most are careful enough – or lucky enough – never to fall in, and most are blasé enough – or careless enough – never to get round to trying them out in the water. This makes no sense. How many times have you bought something – a camera, perhaps, or a tool, or a cooking utensil – and found…