According to the Danish classification of the coasts of Greenland, "Polar" is north of Cape York, "Northern" is above Disko Island, "Central" is from Frederikshaab to north of Disko Bay, "Southern" is from Julianhaab to Cape Farvell, and "East" is Angmagsalik and vicinity.
There are variations in each of the basic models, of course, as the tribal designs used vary a good deal. On the whole, the kayak is very carefully built to meet the local conditions of hunting, sea, and land or ice portaging. As a result, some types are far more seaworthy than others and the weight of hull varies a great deal, even within a basic model. The appearance of all the kayaks models, by tribal classifications, show the influence of tradition and, in many cases display, in either shape or decoration, a tribal totem or mark.
The basic requirements in nearly all kayaks are the same; to paddle rapidly and easily, to work against strong wind and tide or heavy head sea, to be maneuverable, and to be light enough to be readily lifted from the water and carried. The low freeboard required makes decking a necessity. In general, the kayak is designed to carry one paddler, but in Alaska are kayaks that can carry two or three paddlers, each in a manhole or cockpit, or a paddler and one or two passengers. It is generally conceded that the kayak built to carry three in this fashion is the result of Russian influence. Nunivak Island kayaks had large manholes that carried two people back-to-back. Where it is desirable to portage the kayak over ice or land for a great distance the boat is very light and is capable of being carried like a large basket, by inserting one arm under the decking at the manhole or cockpit, but where such a requirement is not an important factor, the kayaks are often rather large and heavy. In the majority of types, the degree of seaworthiness obtained is very great. Some types are built very narrow and sharp-ended; these usually require a skillful paddler. Others are wide and more stable, requiring less skill to use. In areas where severe weather is commonly met, the kayaks are usually very strong and well-designed. Where ice or other conditions do not allow a heavy sea to make up, the kayaks are often light, narrow and very low sided—more like racing shells than working canoes. Most Alaskan kayaks come stern to the wind when paddling stops, but most of the eastern craft come head to the wind. Nearly every type has been developed by long periods of trial and error, to produce the greatest efficiency in meeting the conditions of use in a given locality. This has made the kayak a more complicated and more developed instrument of the chase than is to be found in any other form of hunting canoe, due in part, perhaps, to the great craftsmanship of the Eskimo.
The construction of the kayak follows a basic plan. In all kayaks the gunwales are the main strength members, longitudinally. A few designs employ, in addition, a stiff keel member, but most have rather slender and light longitudinal batten systems having little longitudinal strength value, but which in combination with very light frames, give transverse support to the skin cover. Even in the flat-bottom models, the kayaks, unlike the umiaks, depend entirely upon the gunwales for longitudinal strength. The frames are bent and in one piece from gunwale to gunwale in all but a few flat-bottom kayaks, of the sampan cross section; these employ bent frames. The longitudinal batten systems show great variety. The eastern kayaks of the flat-bottom and V-bottom models have three longitudinal battens (including the keel or keelson) in addition to the heavy and often deep gunwale members; these are supported at bow and stern either by stem and stern post of shaped plank on edge as in the Greenland V-bottom kayaks, or by light extensions of the keelson and small end-blocks as in the northern Greenland, Baffin Island, and Labrador types. The multi-chine types of the western Arctic have from seven to eleven longitudinals (including the keelson) in addition to the gunwales. In some of these kayaks there are no stem and stern posts, the battens and keelson coming together at a blunt point in small head blocks; but many types have rather intricate stem-pieces, carved from blocks of wood, and plank-on-edge stern posts. The Asiatic kayaks, curiously enough, exhibit the construction of both eastern and western Arctic kayaks, the crude, small Koryak kayak having a 3-batten V-bottom, while the Chukchi kayak is built like the kayaks on the east side of the Bering Strait. The decking of kayaks is of very light construction; usually there are two heavy thwarts to support the manhole and from one to three light thwarts afore and abaft these. The Alaskan kayaks from Kotzebue Sound southward have ridged decks supported by fore-and-aft ridge-battens from the ends of the hull to the manhole. Elsewhere the deck of the kayak is flat athwartship except at the manhole, where there is some crown or ridging to increase the depth inside the boat, particularly forward of the manhole. In the majority of these kayaks short fore-and-aft battens are laid on the thwarts forward of the manhole to support the skin cover in its sweep upward to the manhole. The transverse frames do not come into contact with the skin cover, to avoid transverse ridges being formed in it; and the longitudinal battens which support the skin cover form longitudinal ridges, or chines, in it.
The timber used in the Eskimo kayak building is usually driftwood. Fir and pine, spruce or willow are available in much of the Arctic for longitudinals. Bent frames are commonly of willow. Scarphing in the framework of kayaks was far less common than in umiaks; the scarphs when found are only in the gunwales. All scarphs are of the hooked type and are usually quite short (the hooked scarph is the best one when the fastenings are lashings). Sinew is generally used in all lashings and for sewing material. The heads of frames are commonly tenoned into the underside of the gunwales and are then either lashed or pegged with treenails of wood or bone to hold them in place. In the joining of frames and longitudinals, the lashings are commonly individual, but in some types of kayak continuous lashings (connections in series using one length of sinew) are occasionally found. Where possible, the lashings are turned in so that the turns cross right and left. In some parts of the framework two pieces of timber are "sewn" together; holes are bored along the edges to be joined and a lacing run in with continuous over-and-over turns. These laced joints are common in the stems of the Alaskan kayaks. Gunwales and battens are most commonly lashed through holes bored in them and in the bow and stern members. Care is taken that all lashings are flush on the outside, so that the skin cover is smooth and chafing will be avoided. Bone knobs at stem and stern heads are used in the Coronation Gulf kayaks in the west and in many Greenland models. Bone stem bands are more widely employed, however, being in use at Kodiak and Nunivak Islands, in the Aleutians, at Norton Sound in Alaska, and in Greenland and Baffin Island in the east. It is probable that these bands were once in wider use than thus indicated. Strips of bone are also used to prevent chafing at gunwale in paddling and for strengthening scarphs in the manhole rim.
Figure 175
Frame of Kayak at Nunivak Island, Alaska, 1927. Photo by Henry B. Collins.
It will be noted that all Eskimo skin boats have a complete framing system, which is first erected and then fitted with the skin cover. This is a method of construction very different from that of the birch-bark canoes of the Indians living to the southward of the American Eskimo. The birch-bark canoe is built by forcing a framing system into an assembled cover and holding it in place there by a rigid gunwale structure, to which the bark cover is lashed. This basic structure is used even in the Alaskan area, where there are birch-bark canoes that in hull form and proportions strongly resemble the flat-bottom kayak. The basic difference between the two craft is illustrated by the fact that whereas the removal of the skin cover of the kayak leaves the frame intact, the removal of the bark cover of the kayak-like birch-bark canoes would result in the collapse of the framework, except for the gunwale-thwart structure or, in a few, the chine-floor structure. Because of this basic difference the superficial resemblance of some Indian bark canoes to kayaks has no meaningful relationship to the possibility of the influence of the kayak on the bark canoe, or vice-versa. Some Indian tribes have in fact built skin-covered canoes, as will be seen in chapter 8, but the framework and structural system used is always that of the bark canoe, never that of the Eskimo skin boat. Nor is there evidence that the Eskimo ever used the bark canoe frame-structure in their kayaks or umiaks. Hence, in spite of contact between these peoples, the watercraft of each remains basically different in structural design.