If you find yourself in a scalding situation on your boat, Water Jel is a great thing to have onboard. Whether you burned yourself fixing the engine or trying to emulate Wolfgang Puck in the galley, this burn treatment eases pain and provides fast relief. It contains lidocaine, a pain-killing ingredient, and comes in a sterile dressing you can wrap around a minor or serious burn to instantly soothe the area. Prices start at $7.95.