As any sailor will tell you, exposure to UV rays is often extreme when you're out on the water and a wide-brimmed sun hat is an important part of your personal boating kit. It also reduces glare, helping you keep an effective lookout. Not just any hat, though you need one that's designed to stay on your head in gusty winds, with plenty of all-round shade and without a floppy brim that flaps annoyingly in a fresh breeze. An easily adjustable retention cord is also essential, and it'