GB2232935A - Multihull board sail - Google Patents

Multihull board sail Download PDF

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Publication number
GB2232935A
GB2232935A GB8913608A GB8913608A GB2232935A GB 2232935 A GB2232935 A GB 2232935A GB 8913608 A GB8913608 A GB 8913608A GB 8913608 A GB8913608 A GB 8913608A GB 2232935 A GB2232935 A GB 2232935A
Authority
GB
United Kingdom
Prior art keywords
boards
boardsailing
multihull
fittings
keel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8913608A
Other versions
GB2232935B (en
GB8913608D0 (en
Inventor
James Garne Winston Harvey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8913608A priority Critical patent/GB2232935B/en
Publication of GB8913608D0 publication Critical patent/GB8913608D0/en
Publication of GB2232935A publication Critical patent/GB2232935A/en
Application granted granted Critical
Publication of GB2232935B publication Critical patent/GB2232935B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/50—Boards characterised by their constructional features
    • B63B32/56—Boards convertible into vessels or other types of water sports boards, e.g. into sailboats, canoes or water-cycles

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

A multihull boardsail has two or more boardsailing boards releasably joined in parallel at an appropriate distance apart. A raised platform 1 is releasably attached to the supporting boards by means of front adjustable fittings 7 which locate in the supporting boards' mastfoot receptors together with rear adjustable fittings 8 which accept and locate each supporting boards' keel whilst permitting the keels virtual normal operation on the boardsailing board. This stable platform 1 accommodates footing 5 to accept traditional boardsailing mast fittings together with mounting 6 for optional attachment of an outboard motor. Slots 9 may be provided to allow for the introduction of each keel to the rear adjustable fitting 8 and to permit vertical adjustment of each keel in use. <IMAGE>

Description

MULTIHULL BOARDSAIL This invention relates to a multihull boardsail.
Additional provision is made for optional motor propulsion.
Boardsails are well known recreational and sporting craft.
They are single hulled and require considerable physical skills on the part of the sailor. Developing these skills is complicated by the requirement to balance on the craft whilst attempting sailing operations. As sailing skills are learned and applied the craft effectively becomes more stable.
Enjoyment of boardsailing is relatively limited to people who can withstand the learning process and accept falls as an integral part of the activity.
Alternative use of the boards is limited to paddling them with, or without, the aid of seats/back supports or towing them with other craft.
According to the present invention there is provided a stable platform supported by two (or more) boardsailing boards and accommodating a single footing for accepting traditional boardsailing mast fittings, also a rear mounting for optional attachment of an outboard motor. The invention is so designed as to permit rapid mounting/demounting to boardsailing boards by means of front adjustable fittings which locate in the supporting boards' mastfoot receptors together with adjustable fittings which accept and locate each supporting boards' keel whilst permitting the keels virtual normal operation on the boardsailing boards.
The invention locates the boards parallel and at an appropriate distance apart and provides for the raising of the platform to achieve clearance for the passage of water between the boards.
The invention permits two (or more if appropriately extended) boardsailing boards to be operated in a multihull configuration from a stable platform whilst retaining virtual normal sailing characteristics. It also provides for the optional attachment of outboard motor provision to provide alternative propulsion.
The invention affords the opportunity to operate the multihull craft with more than one person on board, thus facilitating its use for instruction of boardsailing and/or wider recreational use by people who would not normally participate.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which;- Figure 1 shows in perspective, the platform with fittings for providing attachment to boardsailing boards, footing to provide boardsailing mast attachment (and thereby boom and sail provision) and mounting for outboard motor attachment.
Referring to the drawing the platform 1 is supported and raised above the boardsail boards by upstands 2 which are stabilised by cross members 3 which are formed to allow for clearance 4 between the platform and the water.
A footing 5 is provided to permit the location of traditional boardsailing mast fittings.
A mounting 6 may be provided for the optional fitting of outboard motor propulsion.
Front adjustable fittings 7 provides location in the boardsail boards'mastfoot receptors.
Rear adjustable fittings 8 accept and retain each supporting boards' keel. The fittings are positioned so as to allow that portion of the keel not retained by the fittings to pass through the keel slot of each supporting board. The fittings may allow for vertical adjustment of each keel.
Slots 9 may be required to allow introduction of each keel to the rear adjustable fitting 8 and to permit vertical adjustment of each keel in use.

Claims (4)

1 A multihull boardsail comprising a platform supported above two or more boardsail boards, means for releasably securing the platform to the boardsail boards.
2 A multihull boardsail as claimed in Claim 1 wherein fittings are provided for keel location.
3 A multihull boardsail as claimed in Claim 1 or Claim 2 wherein footing is provided for location of met fitting or fittings.
4 A multihull boardsail substantially as described hel--in with reference to Figure 1 of the accompanying drawing.
4 A multihull boardsail as claimed in Claim 1 or Claim 2 Of Claim 3 wherein mounting is provided for the attachment of outboard motor propulsion.
GB8913608A 1989-06-14 1989-06-14 Multihull board sail Expired - Fee Related GB2232935B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8913608A GB2232935B (en) 1989-06-14 1989-06-14 Multihull board sail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8913608A GB2232935B (en) 1989-06-14 1989-06-14 Multihull board sail

Publications (3)

Publication Number Publication Date
GB8913608D0 GB8913608D0 (en) 1989-08-02
GB2232935A true GB2232935A (en) 1991-01-02
GB2232935B GB2232935B (en) 1993-02-24

Family

ID=10658384

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8913608A Expired - Fee Related GB2232935B (en) 1989-06-14 1989-06-14 Multihull board sail

Country Status (1)

Country Link
GB (1) GB2232935B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277301A (en) * 1993-04-23 1994-10-26 Richard John Winston Harvey Multi-hull board sail with hydrofoils
US6302042B1 (en) 1999-01-22 2001-10-16 Harris Kayot, Inc. Deck support bracket for pontoon craft

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883909A (en) * 1973-10-05 1975-05-20 Vervcraft Inc Sectional small water craft
EP0061878A2 (en) * 1981-03-27 1982-10-06 MECCANOFRUTTA ITALIANA S.n.c. Transformable pleasure craft
GB2124157A (en) * 1982-06-29 1984-02-15 Jens Peter Jensen A rack structure for connection with at least one elongated float member such as a surfboard
WO1984004077A1 (en) * 1983-04-15 1984-10-25 Reel Sa Boat of the sale board type usable in tandem
WO1986006338A1 (en) * 1985-04-25 1986-11-06 Jacques Dominique Stelniceanu Catamaran with joined floats
US4662297A (en) * 1985-02-13 1987-05-05 Crowley Kevin J Knock-down boat
EP0277072A1 (en) * 1987-01-30 1988-08-03 Jacques-Philippe Laboureau Mechanically propulsed catamaran type-board
GB2200873A (en) * 1987-02-17 1988-08-17 William Alan Guest Floating structure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883909A (en) * 1973-10-05 1975-05-20 Vervcraft Inc Sectional small water craft
EP0061878A2 (en) * 1981-03-27 1982-10-06 MECCANOFRUTTA ITALIANA S.n.c. Transformable pleasure craft
GB2124157A (en) * 1982-06-29 1984-02-15 Jens Peter Jensen A rack structure for connection with at least one elongated float member such as a surfboard
WO1984004077A1 (en) * 1983-04-15 1984-10-25 Reel Sa Boat of the sale board type usable in tandem
US4662297A (en) * 1985-02-13 1987-05-05 Crowley Kevin J Knock-down boat
WO1986006338A1 (en) * 1985-04-25 1986-11-06 Jacques Dominique Stelniceanu Catamaran with joined floats
EP0277072A1 (en) * 1987-01-30 1988-08-03 Jacques-Philippe Laboureau Mechanically propulsed catamaran type-board
GB2200873A (en) * 1987-02-17 1988-08-17 William Alan Guest Floating structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277301A (en) * 1993-04-23 1994-10-26 Richard John Winston Harvey Multi-hull board sail with hydrofoils
GB2277301B (en) * 1993-04-23 1997-06-18 Richard John Winston Harvey Boardsails
US6302042B1 (en) 1999-01-22 2001-10-16 Harris Kayot, Inc. Deck support bracket for pontoon craft

Also Published As

Publication number Publication date
GB2232935B (en) 1993-02-24
GB8913608D0 (en) 1989-08-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080614