The twin-mast ice-boat shown in Fig. 4 is the same size as the other one, and built in the same manner except that timbers D D in Fig. 2 are omitted and a smaller deck is laid at the stern.
One foot back from the corners three-inch masts are stepped in holes made in timbers B B to receive half-inch iron pins driven in the foot of the masts. The sticks are eleven feet long and lashed together at the top or bolted with several long, thin bolts as shown in the illustration. They pitch forward at a slight angle, or so that the forestay is eleven feet long.
The gaff is sixteen feet long and the boom eighteen feet in length, and the leach of the sail is fourteen feet.
The gaff is hauled up into the crotch formed by the masts, and a set of blocks and tackle at the bottom of the sail on the boom and the deck will haul the sail into the proper position. It then swings free between the masts, and the jib and main-sail form one large sheet, so that when the main-sheet goes to one side or the other the jib always takes the opposite position and the wind is playing on the entire sail at all times.
This is a very easy rig to handle as it relieves the steersman from the bother of the jib-sheets which are annoying in a stiff breeze.
Scoots and Scooters
Scoots and scooters are the latest wrinkle in ice-boats. Down on the Great South Bay, on the southern side of Long Island, they speak of them in fun as “ice-water boats.” The advantage in a boat of this kind lies in their ability to sail on poor ice or to go across water that is partly open and frozen as many of the bays along the coast are at times.
The scoot shown in Fig. 5 is in the form of a sharpy, but the bottom curves up at the bow so that if it is sailing on the water and comes to the edge of an ice-floe that is not too high out of the water the wind will blow the boat up on the ice and it will sail along on its runners at double its previous speed. In the same manner when it comes to open water it will slip off the ice quite comfortably and become again a marine craft.
The model and descriptions of a centre-board sharpy may be taken for the construction of the boat, except that there is no stem or bow-post and the bottom rounds up the same as the side boards curve in. The bow is therefore nearly a point. This construction is shown in Fig. 6 (page 252), which is a view of the sides and bottom only, the deck planking being fastened down afterwards.