초록 ▼

A planing-type hull has a keel which projects downwardly from a disk which is mounted in the bottom of the hull for limited rotational movement about a vertical axis located rearwardly of the center of the keel. In a second embodiment the keel projects downwardly from a sector or generally pie-shape

A planing-type hull has a keel which projects downwardly from a disk which is mounted in the bottom of the hull for limited rotational movement about a vertical axis located rearwardly of the center of the keel. In a second embodiment the keel projects downwardly from a sector or generally pie-shaped member, which is pivotal in the bottom of the hull between two limit positions. A spring-loaded detent may be employed to return the keel to a centered position.

대표청구항 ▼

A rudderless sailing craft, comprising a planing hull having thereon a sailing rig disposed to be grasped and manipulated by an operator standing on the hull, a single hydrofoil-shaped keel projecting from the underside of said hull adjacent the stern thereof, and operative to assist in the steering

A rudderless sailing craft, comprising a planing hull having thereon a sailing rig disposed to be grasped and manipulated by an operator standing on the hull, a single hydrofoil-shaped keel projecting from the underside of said hull adjacent the stern thereof, and operative to assist in the steering of said hull, and means mounting the upper end of said keel on said hull for limited pivotal movement from one position to another in response to oncoming water, and in opposite directions about a substantially vertical axis relative to a centered position in which said keel is disposed in a plane substantially coincident with the longitudinal axis of said hull, said vertical axis being located rearwardly of the center of said keel, whereby said keel will be forced by the flow of oncoming water to rotate in the windward direction from its centered position.