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Sternpost

About: Sternpost is a research topic. Over the lifetime, 41 publications have been published within this topic receiving 243 citations.

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Patent
09 Oct 1997
TL;DR: A planing hull has a conical contour extending from the bow portion to a stern portion having a flat surface on each side of the keel, a wide lip chine having a lip portion, and a transom separating the bow portions and the stern portion creating a step between the bow and the mid hull transom as discussed by the authors.
Abstract: A planing hull having a conical contour extending from the bow portion to a stern portion having a flat surface on each side of the keel, a wide lip chine having a lip portion, and a transom separating the bow portion and the stern portion creating a step between the bow portion and the stern portion. A flat keel portion extends from the stern to the mid hull transom.

30 citations

Patent
15 Jul 1975
TL;DR: In this article, a boat is lifted from the ground to the top of a vehicle by a winch attached to the rear of the vehicle, and the boat is then lowered to the ground.
Abstract: A hoist is attached to the rear of a vehicle (such as a pick-up truck) to lift a boat from the ground to the top of the vehicle. The hoist has two telescopic members which initially are flat on the ground in extended position. The lower ends of the telescopic members are braced to the vehicle (as by clamping to the rear bumper) and are pivoted to feet which rest on the ground and the lower telescopic members are cross-braced. The upper ends of the telescopic members are clamped to the gunwales near the stern of the boat. The boat rests upside down over the telescopic members with its prow near the rear of the vehicle. On the vehicle is a winch for a rope which passes over a pulley, then down to the ground, through a guide on the prow of the boat and thence to a point of attachment at the stern. As the winch is turned, the prow is lifted up to the pulley, the stern sliding on the ground toward the vehicle. For this purpose, wheels may be attached to the stern. As the stern moves toward the vehicle, the telescopic members contract. The prow slides forward on the top of the vehicle until it is horizontal. By a different arrangement of pulleys, the hoist and winch may be used to lower the boat to the ground.

19 citations

Patent
26 Jan 2001
TL;DR: In this article, a monohull keel sail boat is provided with a bow foil structure, a keel foil structure and a stern foil structure to provide a variable angle of attack and thus variable lifting forces.
Abstract: A monohull keel sail boat is provided with a bow foil structure, a keel foil structure and a stern foil structure. The bow, keel and stern foil structures have foils with may be moved to provide a variable angle of attack and thus variable lifting forces. The stern foil structure has a ladder foil arrangement and includes vertical struts to provide steering control thus replacing a conventional rudder. The three foil structures work in concert to lift the hull of the boat, but not the keel, completely out of the water so as to provide near listless sailing.

17 citations

Patent
31 Mar 1970
TL;DR: A boat construction with a pair of spaced-apart slots near the stern open to the bottom of the boat and the stern wall of a boat and a retractible running gear pivotally mounted in the slots between a land transport position and a retracted position as mentioned in this paper.
Abstract: A boat construction having a pair of spaced-apart slots near the stern open to the bottom of the boat and the stern wall of the boat and a retractible running gear pivotally mounted in the slots between a land transport position and a retracted position A detachable hitch having a three-point connection to the bow of the boat and a universal joint connection to a holding vehicle

14 citations

Patent
17 Feb 2011
TL;DR: In this paper, a retractable cover system for a pontoon boat comprising an expanding frame of U-shaped supports sliding in tracks along the sides of the boat, interconnected by expanding scissors is presented.
Abstract: A retractable cover system for a pontoon boat comprising an expanding frame of U-shaped supports sliding in tracks along the sides of the boat, the U-shaped supports interconnected by expanding scissors The bow and stern ends of the frame are provided with pivoting sections that include horizontal and angled U-shaped supports to define fabric-supporting and fabric-securing structure at the bow and stern of the boat when the frame is fully extended The retracted frame and fabric cover self-store at the stern of the boat by tilting a pivot station portion of the track rearwardly

13 citations

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20201
20161
20153
20131
20121
20111