This is the usual type of Dyak boat, and the method of making a smaller or larger canoe is exactly the same. Even a war-boat, ninety feet long, is made from the trunk of one tree. In the longer boats planks or gunwales are stitched on the sides, and the seams are caulked so as to render the boat watertight. These boats are covered with awnings called _kadjangs_, which make a very good covering, as they are at once watertight, very light, easily adjusted, and so flexible that if necessary each section can be rolled up and stored in the bottom of the boat. These _kadjangs_ are made of the young leaves of the _nipa_ palm. The leaves are sewn together with split cane, each alternate leaf overlapping its neighbour on either side, until a piece about six and a half feet square is made. This section is made to bend in the middle crosswise, so that it can be doubled and rolled up, or partly opened, and made to serve as a roof. Sometimes _kadjangs_ are made from the leaves of the Pandanus palm. [Illustration: SEA DYAKS MAKING A CANOE Sea Dyaks at work on a small dug-out. The tree has been felled, and the trunk is being cut into shape and hollowed out. The Dyaks are using the native axe or _bliong_, and the picture shows their method of handling it.] To propel these boats the Dyaks use paddles about three feet or more in length. The paddle used by the steersman is larger than those used by the others, and the women use much smaller paddles than the men. These dug-out boats draw very little water, and are easily handled, and may be propelled at a good pace. In shallow streams and in the rapids up-river, the Dyaks use small canoes, which they propel with poles, standing up in the boat to do so. The principal tools the Dyaks have for their work are the _duku_ and _bliong_. The _duku_ is a short, thick sword, or, rather, chopping-knife, about two feet in length. The blade is either curved like a Turkish scimitar, or else quite straight. The handle is beautifully carved, and is made of hard wood or of horn. The _duku_ is used in war as well as for more peaceful purposes. In the jungle it is indispensable, as without it the Dyak would not be able to go through the thick undergrowth which he is often obliged to penetrate. It is, moreover, used for all purposes where a knife or chisel is used, and is a warrior’s blade as well as a woodman’s hatchet.