The three-holer, commonly believed to have been introduced by the Russians, was used by Russian officers, inspectors, and traders in their explorations and travels on the Alaskan coast. One of these boats measures 24 feet 8⅜ inches long, 30 inches beam, and 10½ inches deep to top of gunwale. The center manhole is commonly larger in diameter than the other two and is used for either a passenger or cargo. The fore edge of the fore manhole is 8 feet to 8½ feet from the bow and the other manholes are from 4 to 4½ feet apart edge to edge. A large example of this class of kayak measures 28 feet 1½ inches long, 38½ inches beam and 12 inches deep to top of gunwale. Probably none exceed 30 feet in length. Both the single-and the double-blade paddle are used by the Aleuts, but the double blade is preferred in hunting. The paddle blades are rather narrow and leaf-shaped, with pointed tips. [Illustration: Figure 180 NUNIVAK ISLAND KAYAK, ALASKA, 1889, in U.S. National Museum (USNM 160345), showing painted decoration of the mythological water monster Palriayuk.] [Illustration: Figure 181 KING ISLAND KAYAK, Alaska, 1888, in U.S. National Museum (USNM 160326), collected by Capt. M. A. Healy, U.S. Revenue Steamer _Bear_.] [Illustration: Figure 182 NORTON SOUND KAYAK, Alaska, 1889, U.S. National Museum (USNM 160175).] The plan of a kayak from Nunivak Island (about due north of Unalaska and roughly halfway to St. Lawrence Island) is shown on page 198 (fig. 180). This type of kayak is obviously related to that of Kodiak Island, for it has approximately the same lines and proportions. Only the profiles of bow and stern exhibit marked differences. Perhaps the most striking feature of the Nunivak kayak is its bow, which might represent a seal's head; a hole through the whole bow structure forms the eyes and also serves functionally as a lifting handle. The stern profile is simpler than that used in the Kodiak kayaks. The example shows the mythological water monster Palriayuk, a painted totem that once distinguished the Nunivak kayaks; missionary influence has long since erased such decorations from Alaskan kayaks. Whereas the Kodiak kayak has eleven battens (including the keelson) in its frame, the Nunivak kayak has nine, and all the longitudinals in it are rectangular in section. Differences in dimensions of Nunivak and Kodiak kayaks are remarkably slight, the greatest length reported for either type is about 15 feet 9 inches and the greatest beam is about 32 inches. Both types have a large manhole and carry a passenger back-to-back with the paddler. The single-bladed paddle is used. The kayak is sometimes transported over ice by means of a short sledge, by one man, but it is otherwise rather heavy to portage. Highly regarded by all who have had contact with it, this is generally considered one of the safest and most useful of the Alaskan kayaks. [Illustration: Figure 183