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GB2154183A - Improved hull shape and moveable carriage for sailing craft - Google Patents
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GB2154183A - Improved hull shape and moveable carriage for sailing craft - Google Patents

Improved hull shape and moveable carriage for sailing craft Download PDF

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Publication number
GB2154183A
GB2154183A GB08501852A GB8501852A GB2154183A GB 2154183 A GB2154183 A GB 2154183A GB 08501852 A GB08501852 A GB 08501852A GB 8501852 A GB8501852 A GB 8501852A GB 2154183 A GB2154183 A GB 2154183A
Authority
GB
United Kingdom
Prior art keywords
craft
carriage
hull
sailing
hulled
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
GB08501852A
Other versions
GB2154183B (en
GB8501852D0 (en
Inventor
Allen Charles Peter Cox
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
Priority claimed from GB848403123A external-priority patent/GB8403123D0/en
Priority claimed from GB848409074A external-priority patent/GB8409074D0/en
Application filed by Individual filed Critical Individual
Priority to GB08501852A priority Critical patent/GB2154183B/en
Publication of GB8501852D0 publication Critical patent/GB8501852D0/en
Publication of GB2154183A publication Critical patent/GB2154183A/en
Application granted granted Critical
Publication of GB2154183B publication Critical patent/GB2154183B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B63B1/121—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
    • B63B15/0083—Masts for sailing ships or boats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/38—Keels

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Toys (AREA)

Abstract

A multi-hulled sailing craft eg a catamaran having wide box-like keels 11 extending for most-part of the hull length, enabling the craft to lift on to the comparatively long, narrow, superficially flat surfaces 12 at speed. Additionally the position of the mast, sail, crew and steering rudder, all mounted on a moveable supporting carriage 2, can be moved fore and aft ensuring optimum sailing characteristics and weight distribution conditions. <IMAGE>

Description

SPECIFICATION Improved hull shape and moveable carriage for sailing craft This invention relates to an improved hull shape and moveable carriage for sailing craft of the multi-hull type.
Sailing craft of this category have either hinged centerboards, vertically adjustable dagger-boards or fixed longitudinal keels, the main purpose of all of these is to prevent the hulls slipping sideways through the water under the force of the wind acting on the sails, the fixed keel so described is a narrow vertical board extending for most-part of the hull length, extending downwards from the center of each hull 10 Figure 2 This invention is described hereafter and illustrated on drawings 1/2 and 2/2.
Figure 1 shows three views of a twin hulled sailing craft described in this invention.
Figure 2 shows a section through a hull of an orthodox craft having a fixed keel.
Figure 3 shows a section through a hull as described in this invention.
This invention retains the vertical sides of the fixed keel so described but increases the width to form a box-like structure 11 having superficially flat bottom surface 12 which is of a significant proportion of the normal water line wdith of the hull 13.
The purpose of the invention is to encourage the craft to lift from the normal water line position 8, which it adopts at slow speed, on to the flat narrow keel bottom 9 at higher speeds. To enable these higher speeds to be reached the invention also includes a method of adjusting the positions of the sail, crew and rudder, fore and aft, to best suit the position and strength of the wind.
The invention consists of two guide bars 1 running parallel and between the hulls, positioned approximately adjascent to the inner gunwale of each hull. These guide bars act as rails for a carriage 2 having rollers, small wheels or sliding pads 3 to enable the carriage to be easily moved backwards and forwards. At the front end of the carriage is the mast mounting socket 4 in the center of the carriage is a seat 5 to accommodate the crew and at the rear end is the steering rudder 6. The carriage's position is controlled longitudinally by a rope winch 7 or similar mechanism. Hence whilst sailing the helmsman can adjust the sailing characteristics to enable the craft to sail at maximum speed.
1. A multi-hulled sailing craft, having a wide box-like keel on each hull and a sliding carriage mounted on a structure between the hulls.
2. A multi-hulled sailing craft as claimed in Claim 1 wherein the box-like keel is of sufficient width to enable the hull to lift on to it's superficially flat bottom face as the speed of the craft increases.
3. A multi-hulled sailing craft as claimed in Claim 1 wherein guide means are provided between the hulls co-operable with the carriage to control the sliding movement of the carriage on the hulls.
4. A multi-hulled sailing craft as claimed in Claim 1 wherein the carriage's longitudinal position is located and secured by means of a rope winch or similar mechanism, enabling the adjustment to take place whilst the craft is sailing.
5. A multi-hulled sailing craft as claimed in Claim 1 wherein a mast mounting socket is attached to the forward end of the carriage to enable the masts position to be altered longitudinally whilst the craft is being sailed.
6. A multi-hulled sailing craft as claimed in Claim 1 wherein a seat is mounted at some approximately central position of the carriage, enabling the crew's weight to be moved fore and aft whilst the craft is being sailed.
7. A multi-hulled sailing craft as claimed in Claim 6 wherein a steering rudder is mounted at the rear end of the carriage enabling the position of the rudder to remain at constant distance from the crew's position.
8. A multi-hulled sailing craft substantially as described herein with reference to the accompanying drawings Figures 1, 2 and 3.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improved hull shape and moveable carriage for sailing craft This invention relates to an improved hull shape and moveable carriage for sailing craft of the multi-hull type. Sailing craft of this category have either hinged centerboards, vertically adjustable dagger-boards or fixed longitudinal keels, the main purpose of all of these is to prevent the hulls slipping sideways through the water under the force of the wind acting on the sails, the fixed keel so described is a narrow vertical board extending for most-part of the hull length, extending downwards from the center of each hull 10 Figure 2 This invention is described hereafter and illustrated on drawings 1/2 and 2/2. Figure 1 shows three views of a twin hulled sailing craft described in this invention. Figure 2 shows a section through a hull of an orthodox craft having a fixed keel. Figure 3 shows a section through a hull as described in this invention. This invention retains the vertical sides of the fixed keel so described but increases the width to form a box-like structure 11 having superficially flat bottom surface 12 which is of a significant proportion of the normal water line wdith of the hull 13. The purpose of the invention is to encourage the craft to lift from the normal water line position 8, which it adopts at slow speed, on to the flat narrow keel bottom 9 at higher speeds. To enable these higher speeds to be reached the invention also includes a method of adjusting the positions of the sail, crew and rudder, fore and aft, to best suit the position and strength of the wind. The invention consists of two guide bars 1 running parallel and between the hulls, positioned approximately adjascent to the inner gunwale of each hull. These guide bars act as rails for a carriage 2 having rollers, small wheels or sliding pads 3 to enable the carriage to be easily moved backwards and forwards. At the front end of the carriage is the mast mounting socket 4 in the center of the carriage is a seat 5 to accommodate the crew and at the rear end is the steering rudder 6. The carriage's position is controlled longitudinally by a rope winch 7 or similar mechanism. Hence whilst sailing the helmsman can adjust the sailing characteristics to enable the craft to sail at maximum speed. CLAIMS
1. A multi-hulled sailing craft, having a wide box-like keel on each hull and a sliding carriage mounted on a structure between the hulls.
2. A multi-hulled sailing craft as claimed in Claim 1 wherein the box-like keel is of sufficient width to enable the hull to lift on to it's superficially flat bottom face as the speed of the craft increases.
3. A multi-hulled sailing craft as claimed in Claim 1 wherein guide means are provided between the hulls co-operable with the carriage to control the sliding movement of the carriage on the hulls.
4. A multi-hulled sailing craft as claimed in Claim 1 wherein the carriage's longitudinal position is located and secured by means of a rope winch or similar mechanism, enabling the adjustment to take place whilst the craft is sailing.
5. A multi-hulled sailing craft as claimed in Claim 1 wherein a mast mounting socket is attached to the forward end of the carriage to enable the masts position to be altered longitudinally whilst the craft is being sailed.
6. A multi-hulled sailing craft as claimed in Claim 1 wherein a seat is mounted at some approximately central position of the carriage, enabling the crew's weight to be moved fore and aft whilst the craft is being sailed.
7. A multi-hulled sailing craft as claimed in Claim 6 wherein a steering rudder is mounted at the rear end of the carriage enabling the position of the rudder to remain at constant distance from the crew's position.
8. A multi-hulled sailing craft substantially as described herein with reference to the accompanying drawings Figures 1, 2 and 3.
GB08501852A 1984-02-07 1985-01-25 Improved hull shape and moveable carriage for sailing craft Expired GB2154183B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08501852A GB2154183B (en) 1984-02-07 1985-01-25 Improved hull shape and moveable carriage for sailing craft

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB848403123A GB8403123D0 (en) 1984-02-07 1984-02-07 Movable carriage on sailing craft
GB848409074A GB8409074D0 (en) 1984-04-07 1984-04-07 Hull shape for sailing craft
GB08501852A GB2154183B (en) 1984-02-07 1985-01-25 Improved hull shape and moveable carriage for sailing craft

Publications (3)

Publication Number Publication Date
GB8501852D0 GB8501852D0 (en) 1985-02-27
GB2154183A true GB2154183A (en) 1985-09-04
GB2154183B GB2154183B (en) 1987-09-03

Family

ID=27262274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08501852A Expired GB2154183B (en) 1984-02-07 1985-01-25 Improved hull shape and moveable carriage for sailing craft

Country Status (1)

Country Link
GB (1) GB2154183B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340181A1 (en) * 1988-04-29 1989-11-02 Over Wave S.R.L. Catamaran boat structure
GB2351473A (en) * 1999-06-26 2001-01-03 Paul Warzytz Boat with buoyant keel
GB2356603A (en) * 1999-11-25 2001-05-30 Michael John Wingeatt Hull having a buoyant keel
US6386130B1 (en) * 2000-08-22 2002-05-14 Donald A. Kuehne Control systems for sailing vessels
WO2003045771A1 (en) * 2001-11-22 2003-06-05 Leonidas Verbickis Boat
ES2205962A1 (en) * 1997-05-21 2004-05-01 Federico Cantero Buitron Foldable motor-sailboat

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594700A (en) * 1943-12-02 1947-11-18 Gordon Munro Ship hull
US4286533A (en) * 1979-08-23 1981-09-01 Sanner Sidney N Catamaran sailboat
US4389958A (en) * 1975-09-03 1983-06-28 March Rodney C Hull for multihulled sailing vessels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594700A (en) * 1943-12-02 1947-11-18 Gordon Munro Ship hull
US4389958A (en) * 1975-09-03 1983-06-28 March Rodney C Hull for multihulled sailing vessels
US4286533A (en) * 1979-08-23 1981-09-01 Sanner Sidney N Catamaran sailboat

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340181A1 (en) * 1988-04-29 1989-11-02 Over Wave S.R.L. Catamaran boat structure
ES2205962A1 (en) * 1997-05-21 2004-05-01 Federico Cantero Buitron Foldable motor-sailboat
ES2205962B1 (en) * 1997-05-21 2005-07-16 Federico Cantero Buitron FOLDING MOTORCYCLE.
GB2351473A (en) * 1999-06-26 2001-01-03 Paul Warzytz Boat with buoyant keel
GB2356603A (en) * 1999-11-25 2001-05-30 Michael John Wingeatt Hull having a buoyant keel
GB2356603B (en) * 1999-11-25 2003-04-16 Michael John Wingeatt A boat having a hull and a buoyant keel
US6386130B1 (en) * 2000-08-22 2002-05-14 Donald A. Kuehne Control systems for sailing vessels
WO2003045771A1 (en) * 2001-11-22 2003-06-05 Leonidas Verbickis Boat

Also Published As

Publication number Publication date
GB2154183B (en) 1987-09-03
GB8501852D0 (en) 1985-02-27

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PCNP Patent ceased through non-payment of renewal fee