초록 ▼

A sailboat having a novel hull shape, a fixed, shallow keel, dual rudders, and retractable, shallow dagger boards for sailing in shallow or shoal water is provided. The combination of features allows the boat to achieve performance sailing at all points of wind, and in both deep and shallow water. T

A sailboat having a novel hull shape, a fixed, shallow keel, dual rudders, and retractable, shallow dagger boards for sailing in shallow or shoal water is provided. The combination of features allows the boat to achieve performance sailing at all points of wind, and in both deep and shallow water. The hull preferably has a hydrodynamic shape which provides lift and lateral resistance to the hull when sailing. The keel is preferably shallow so that the boat may be sailed in shallow water and even beached. The draft of the keel is preferably related to the length of the hull measured along the waterline. In a preferred embodiment, there is 1 inch of draft for every 1 foot of waterline. The boat may also preferably include a set of retractable dagger boards located on opposite sides of the keel. A dagger board may be extended on the leeward side of the boat when the wind exceeds about 15 knots, in order to help prevent side slippage or leeway. In a preferred embodiment, the draft of the dagger board does not exceed that of the shallow keel so as to not increase the overall draft. Dual rudders may also be provided to help prevent leeway. The dual rudders are preferably sized so as to not increase the overall draft of the sailboat.

대표청구항 ▼

[ What is claimed is:] [1.]1. A sailboat capable of sailing to windward in shallow water and including a bow and a stern, the sailboat comprising:a hull including a waterline, and having a modified U-shape forming a hollow area and bulge in a bottom section of the hull;a shallow keel supported on an

[ What is claimed is:] [1.]1. A sailboat capable of sailing to windward in shallow water and including a bow and a stern, the sailboat comprising:a hull including a waterline, and having a modified U-shape forming a hollow area and bulge in a bottom section of the hull;a shallow keel supported on an underside of the hull;a pair of retractable dagger boards supported by the hull and disposed on either side of keel;wherein the sailboat has an overall draft of about one inch for every foot of waterline, the keel has a draft of about 1/3 of the overall draft at its deepest point, and the dagger boards extend no further than the draft of the keel, so as to not increase the overall draft of the sailboat.