Native people made many types of boats for different purposes. The Aleut baidarka was made in double or triple cockpit designs, for hunting and transporting passengers or goods. An umiak is a large open sea canoe, ranging from 17 to 30 feet , made with seal skins and wood. It is considered a kayak although it was originally paddled with single-bladed paddles, and typically had more than one paddler. Native builders designed and built their boats based on their own experience and that of the generations before them, passed on through oral tradition. The word “kayak” means “man’s boat” or “hunter’s boat”, and native kayaks were a personal craft, each built by the man who used it—with assistance from his wife, who sewed the skins— and closely fitting his size for maximum maneuverability. The paddler wore a tuilik, a garment that was stretched over the rim of the kayak coaming, and sealed with drawstrings at the coaming, wrists, and hood edges. This enabled the “eskimo roll” and rescue to become the preferred methods of recovery after capsizing, especially as few Inuit could swim; their waters are too cold for a swimmer to survive for long.