The Unalaska kayak of 1894 (below) is a better known type. This design is used throughout the Aleutians and on the adjacent mainland as far east as Prince William Sound. It was also employed in the Pribilof Islands and at St. Matthew, having been used by Aleuts engaged in sealing expeditions there. All kayaks of this type do not have the same bow and stern profiles as the example; some have the bifid bow built with the portion above the slit arched upward higher than the outer stem-piece and so more prominent; there are also minor variations in the stern. The shape of the hull, however, is consistently maintained throughout the area in which this type is used. Though the deck is ridged, it is relatively low compared to that of the Kodiak kayak, and the thwarts supporting the manhole are heavily arched and in one piece from gunwale to gunwale. The construction is like that of the Kodiak kayak, but the gunwales and upper longitudinal battens, instead of meeting the stern post, end on a crosspiece well inside the stern to give the effect of a transom stern. However, some Aleut kayaks have the normal sharp stern after the fashion of the Kodiak kayak, but without the projecting tail or handgrip, and nearly all have two thwarts between the after manhole thwart and the stern and three forward of the fore manhole thwart. The skin cover passes over the manhole rim as in the Kodiak type. The bow block is sometimes built up of two blocks sewn or laced together. Strengthening pieces of light plank are sometimes fitted from the bow block aft; these are laced to the top inside edge of the gunwales and pinned to the stem block to form long breast-hooks. In some kayaks with the square stern, only the gunwale is supported by the crosspiece on the stern, the two battens on each side being supported by the last frame only, about 6 inches inboard of the crosspiece. [Illustration: Figure 179 KAYAK FROM RUSSIAN SIBERIA, 2-hole Aleutian type, in Washington State Historical Society and Museum. Taken off by John Heath, 1962.] This type of kayak is the only one known to have been built with more than one manhole. The two-hole kayak is an Aleut development used in whaling and sea-otter hunting, so far as is known; the paddler sits in the after manhole. Measurements of a two-hole kayak in the United States National Museum show it to be 20 feet 7¼ inches long, 23 inches beam, and 9½ inches deep to top of gunwale. The manholes are about 46 inches apart edge to edge and the foremost is about 8 feet from the bow.