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Buoyant, Variably Buoyant and Non-Buoyant Foil Structures for Marine Vessels and Watercraft

a foil structure and foil technology, applied in vessel construction, special-purpose vessels, recreational vessels, etc., can solve the problems of affecting the safety of watercraft, so as to reduce the pitching action, increase stability, and reduce the effect of pitching

Inactive Publication Date: 2015-05-28
AEROMARINE INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a watercraft with increased stability and reduced pitching and rolling actions when encountering waves. This results in a smoother ride and better performance of the watercraft, even in the presence of significant waves.

Problems solved by technology

Conventional watercraft (which term “watercraft” will be understood hereinafter to include all manner of marine vessels, including ships, boats, seaplanes, and personal watercraft adapted for use in either commercial, pleasure, military, shipping or other context, whether powered by engine, wind or otherwise), may experience undesirable pitching and rolling during normal operation under wavy or unsettled marine conditions.
For example, the buoyancy of the watercraft in motion may cause the watercraft to pitch in an undesirable and perhaps dangerous manner when encountering a sufficiently large wave.
In other circumstances, however, a substantial wave may significantly and negatively effect the operation of the watercraft, and may place the watercraft, its cargo and crew at significant risk of harm or loss.

Method used

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  • Buoyant, Variably Buoyant and Non-Buoyant Foil Structures for Marine Vessels and Watercraft

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Experimental program
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Effect test

embodiment

Pontoon-Type Embodiment

[0049]In one embodiment of the invention, as illustrated in FIGS. 5A, 5B, 5C, 5D, 5E, and 5F, the watercraft 10 comprises hull 20 having a substantially flat wet deck 90, providing a pontoon-type watercraft 10 operated, for example, from helm 180 disposed on the hull 20. Side-hulls 30 extend on both sides of the hull 20 downwardly in a substantially vertical orientation, and from each of which side-hulls 30 depend downwardly and inwardly foils 40. Operation of the pontoon-type watercraft 10 is similar to the operation of the watercraft illustrated in FIGS. 1A, 1B, 1C, 2A, 2B and 2C hereinabove with FIGS. 5A, 5B and 5C depicting the watercraft 10 at rest or non-planing mode and FIGS. 5D, 5E and 5F depicting the watercraft 10 in planing mode. It is understood, that the side-hulls 30 may be provided having various shapes such as, for example, cylindrical shapes, box beam shapes, or monohull shapes. Furthermore, the side-hulls30 may be buoyant or variably- buoyant...

hull embodiment

Operation of Shortened Side-Hull Embodiment

[0051]In this embodiment of the invention, the watercraft 10, when stationary or while operating at below planing speed is as illustrated in FIGS. 6A, 6B and 6C positioned in the water such that the wet deck is in contact with or fully or partially submerged in the water. As the velocity of the watercraft 10 is increased, the watercraft 10 begins to plane, that is, the watercraft angles 63 upwardly, and is partially elevated, the contact between the vessel and the water being substantially limited to the planing surface 62 of a length of the lower surface of each foil proximate the stern of the watercraft, as illustrated in FIGS. 6D, 6E and 6F. It is understood, that the deep-v centre hull, as illustrated in FIGS. 6A, 6B, 6C, 6D, 6E and 6F, reduces the volume of the tunnel 140 compared to the embodiment illustrated in FIGS. 1A, 1B, 1C, 2A, 2B, and 2C.

Truncated Foils and Shortened Side-Hull Embodiment

[0052]As illustrated in FIGS. 7A, 7B, 7C,...

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PUM

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Abstract

A watercraft including a side-hull extending downwardly from each side of a hull of the watercraft. A foil extends downwardly and inwardly from each side-hull.

Description

[0001]This application claims priority to Canadian Patent Application No. 2,835,902, entitled BUOYANT, VARIABLY BUOYANT AND NON-BUOYANT FOIL STRUCTURES FOR MARINE VESSELS AND WATERCRAFT and filed on Nov. 28, 2013, the entire contents of which are hereby incorporated by reference.FIELD[0002]The present invention relates to buoyant, variably buoyant and non-buoyant foil structures for marine vessels and watercraft, and more particularly, relates to buoyant, variably buoyant and non-buoyant foil structures for marine vessels and watercraft that provide increased operational stability.BACKGROUND[0003]Conventional watercraft (which term “watercraft” will be understood hereinafter to include all manner of marine vessels, including ships, boats, seaplanes, and personal watercraft adapted for use in either commercial, pleasure, military, shipping or other context, whether powered by engine, wind or otherwise), may experience undesirable pitching and rolling during normal operation under wav...

Claims

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Application Information

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IPC IPC(8): B63B1/26B63B1/10
CPCB63B1/10B63B1/26B63B34/45
Inventor DALEY, CARL F.JESS, PETER E.JESS, MATTHEW EDMOND
Owner AEROMARINE INNOVATIONS