A kayak is typically propelled with a double ended paddle. The user or paddler sits down in the boat with feet out forward. The top of the boat is covered with a deck. The paddler sits in a hole in the cockpit which may be sealed of with a spray skirt. This makes it possible for the boat to become inverted and righted again without taking on water. This maneuver is known as an [Eskimo Roll]?.
Modern kayaks fall into several catagories including: [white water]?, [sea kayaks]?, flat-water racing, and recreational. These catagories may also be subdivided. Modern kayaks are made of plastic, fiberglass?, kevlar, or wood.