The decked hunting canoe, the kayak, is propelled by paddle alone when used for hunting and fishing, but is occasionally towed by the umiak when the owner travels. The kayak is perhaps the most efficient example of a primitive hunting boat; it can be propelled at high speed by its paddler and maneuvered with ease. These hunting kayaks are commonly built to hold but one person, though one group of Eskimo built the kayaks to carry two or three. The kayak, remarkable for its seaworthiness, lightness and strength, has been perhaps one of the most important tools in the Eskimo fight for existence. Few tribes have been unacquainted with its use. Because of its employment, the kayak often has to be designed to meet very particular requirements and so there is greater variation in its form and dimensions than in the umiak. Seagoing skin boats have not been common outside the Arctic in historical times. In fact only the European Celts are known with certainty to have used such craft. The Irish, in particular, employed large seagoing skin boats as late as the reign of Queen Elizabeth of England; a drawing of one preserved in the Pepysian Library was reproduced in the _Mariner's Mirror_ (vol. 8, 1922, facing p. 200). Although there can be little doubt that large seagoing skin craft had been more widely used in prehistoric times, the perishable nature of the skin covering and the light framework probably account for the lack of any archeological remains that would indicate its range. The availability of the materials required in its construction, however, suggest that its use could have been very widespread. The long voyages made by the Irish, in the dawning of recorded history, could well have made its design and construction known to others. There are still many skin boats in use by primitive people and even a few survivals in Europe, but with the exception of the Irish "curragh," these craft are designed for inland waters and are either rather dish-shaped, or oval in plan, like half a walnut shell. In design they are related to the coracle of ancient Britain rather than to a seagoing skin boat of the Irish or Eskimo type. Both the Irish curragh and the British coracle, now, of course, are covered with canvas rather than hide.