(4) The _Ndrua_, or twin canoe--which is, as its name implies, made of twin hulls, the one smaller than the other, connected by a deck, on which the mast is stepped. The smaller hull is the outrigger, and is always kept to windward. These vessels being often too large to be made from a single trunk, are put together in sections with a sort of scarf joint, secured by lashings of cocoanut sinnet. The adze and the auger were the only tools used, every plank being adzed from a solid trunk, and, since every joint must fit true, and the planking be less than an inch thick, and one false stroke of the adze might spoil many days of labour, some idea of the skill and patience of the native carpenter may be formed. These vessels were of great size. The _Rusa i vanua_ was 118 feet over all. Her yards were 90 feet long, and she carried a crew of 50 men. Maafu mounted cannon on two of his _ndrua_, which were capable of making long ocean voyages, and with the wind on the quarter could run from ten to fifteen knots in the hour. Though they could lie close to the wind, being keel-less, they made much leeway, and were bad sea-boats to windward or in a seaway, for the play of the twin hulls was apt to work the lashings loose. There is, however, no sea sport so exciting and exhilarating as sailing on a calm sea in a _ndrua_ or _thamakau_ with the wind abeam. A clever sheet-man will contrive to lift the outrigger out of the water until it barely skims the surface, and then the canoe becomes a veritable flying-machine. The _ndrua_ is enormously expensive to keep up, and for this reason it will be seen no more. The mat-sail, which costs far more than canvas, rots quickly if it gets wet, and must be unbent and taken into shelter after every trip. The sinnet lashings, both above and below water, soon work loose and become rotten, and the whole structure has then to be rebuilt. To manage the great sail in tacking a crew of from ten to twenty men, all expert canoemen, is required. By the year 1890 the _ndrua_ in the group could be counted on the fingers, and probably the last has now fallen to pieces. Thomas Williams has given so admirable a description of the building and management of these canoes[101] that it need not be again described. [Pageheader: THE PAY OF CANOE-BUILDERS]