Hull
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorNoboru Kobayashi
Life of this patent
Estimating the term…
Abstract
A number of embodiments of hull arrangements for watercraft that permit forward positioning of the propulsion device but also permit the hull to be constructed as a planing hull. In some embodiments, jet propulsion devices are disclosed and in another embodiment an outboard motor propulsion device is shown.
Claims18
A watercraft comprised of a hull, a propulsion device for said watercraft positioned forwardly in said hull toward a bow end thereof, said propulsion device including propulsion means for cooperating with the body of water in which said watercraft is operating for providing a propulsion force to propel said hull through said body of water, said hull having a buoyant front portion extending from said bow and defining a step in said hull where the propulsion device is located and at a forward position thereon and defined by a generally flat undersurface spaced vertically above said front portion, and flotation means formed at the rear of said hull for raising said hull into a planing condition when traveling at speed.
A watercraft comprised of a hull having a generally V bottom, a deck at the front of said hull, a propulsion device for said watercraft comprising an outboard motor having an engine and a propeller driven by said engine positioned forwardly in said hull toward the bow end thereof and beneath said deck, an opening in the lower portion of said hull at the forward end thereof, said propeller depending through said opening for cooperating with the body of water in which said watercraft is operating for providing a propulsion force to propel said hull through said body of water, said outboard motor being pivotal as a unit while remaining beneath said deck about a horizontal axis between a lowered position wherein the propeller is fully immersed in a body of water and a raised position wherein the propeller is fully contained within the hull.
Dependencies are inferred from the claim text.