From Kotzebue Sound, at Cape Krusenstern, along the north coast of Alaska to near the Mackenzie Delta, the kayaks are very low in the water, long, narrow, and spindle-shaped at the ends. They are distinguished by a very strong rake in the manhole rim, with an accompanying prominent swell in the deck forward of the manhole. They are built with seven longitudinal battens (including the keelson) in addition to the gunwales. In several examples seen, the latter are sometimes slightly channelled on the inside, but this may have been the result of shrinkage in the pith of the timber used and not intentional. These kayaks are very light and easily carried. Both single-and double-blade paddles are employed; the single blade is usually used in travelling. On page 201 are shown a kayak from Cape Krusenstern (fig. 186) and one from Point Barrow (fig. 187). It is reported that these types have now gone out of use. In these boats no stem or stern posts exist, these usually being replaced by small end blocks. The only important difference in the two types shown is in the style of crowning the deck, which is ridged in the Cape Krusenstern kayak but more rounded in the Point Barrow kayak. In spite of their narrow beam and obviously unstable form, these kayaks are said to have been used by rather unskillful paddlers. In general, they were not employed in rough weather but were seaworthy in skillful hands. Though the North Alaska type of kayak, as illustrated by the Point Barrow model (fig. 187), may be said to represent the structural design of kayaks to the eastward as far as Foxe Basin, the Mackenzie Delta kayaks are on an entirely different model. Due to migration of numerous groups of Eskimo to this area in the last seventy years, the design of kayaks here has undergone a great change. In figure 188 appears the plan of a modern Mackenzie Delta kayak. [Illustration: Figure 186 KOTZEBUE SOUND KAYAK (Cape Krusenstern), Alaska, formerly in U.S. National Museum, now in Mariner's Museum.] [Illustration: Figure 187 POINT BARROW KAYAK, Alaska, 1888, in U.S. National Museum (USNM 57773).] [Illustration: Figure 188