WO1991006467A1 - Voilier - Google Patents

Voilier Download PDF

Info

Publication number
WO1991006467A1
WO1991006467A1 PCT/GB1990/001650 GB9001650W WO9106467A1 WO 1991006467 A1 WO1991006467 A1 WO 1991006467A1 GB 9001650 W GB9001650 W GB 9001650W WO 9106467 A1 WO9106467 A1 WO 9106467A1
Authority
WO
WIPO (PCT)
Prior art keywords
boat
sailing
buoyant means
levers
lightweight
Prior art date
Application number
PCT/GB1990/001650
Other languages
English (en)
Inventor
Robert David Humphreys
Original Assignee
Robert David Humphreys
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 Robert David Humphreys filed Critical Robert David Humphreys
Publication of WO1991006467A1 publication Critical patent/WO1991006467A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/10—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
    • B63B43/14—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using outboard floating members

Definitions

  • the invention relates to sailing boats.
  • Sailing boats tend to be either small and light or large and heavy since while a small light sailing boat can be stabilised in a generally upright orientation against applied wind forces by shifting the weight of the crew, larger boats need the righting force of a deep and heavy keel to return them to an upright orientation and prevent excessive heeling caused by applied wind forces.
  • Small light boats are unduly cramped for more than one or two persons over an extended time period but large heavy boats must either be kept afloat on a mooring or marina with considerable inconvenience and/or expense or, if brought ashore when not in use, require considerable time and skill to effect recovery from the water, particularly in adverse weather conditions, and further require a sturdy trailer and large and powerful towing vehicle to transport the boat from a slipway to a storage place, particularly if this involves travel on the public highway.
  • a sailing boat provided with a keel may have ⁇ 0% of its total weight provided in the keel. The deeper the keel and thus the further from the bottom of the hull that the weight is provided in the keel then the greater the righting force provided by such weight when the boat heels over but the more inconvenient it is to load the boat onto a trailer.
  • a lightweight sailing boat having buoyant means provided at opposite sides of the boat generally in the region of gunwales of the boat, such buoyant means being so provided as to engage the water upon heeling of the boat beyond a determined angle and such buoyant means being relatively moveable with respect to the boat thereby to allow the boat to heel beyond said determined angle before the buoyant means starts to exert a significant righting force upon the boat.
  • the buoyant means may be coupled to the boat by a lost motion mechanical coupling.
  • the buoyant means are pivotally mounted by coupling them to one end of levers and coupling the other ends of the levers to the boat inboard of the gunwales and providing check means to limit the angle of pivoting of the levers about the inboard pivots.
  • Each of the buoyancy means may be of angular construction comprising a first limb extending, in a sailing position, from the pivotal connection to the levers generally horizontally inwardly towards the middle of the boat and a second limb extending from the pivot to the levers generally upwardly and outwardly.
  • the buoyant means may be rotated about the pivotal connection to the levers so that the first limb projects downwardly to bring the free end of the first limb into contact with the water and the second limb projects generally inwardly towards the middle of the boat whereby the buoyant means on opposite sides of the boat together with the hull of the boat forms a general trimaran configuration to stabilise the boat against rolling.
  • a sailing boat incorporates means whereby wheels and a towing attachment are or may readily be secured thereto whereby the boat may easily be launched or recovered.
  • the hull of the boat may for example have wells therein in which wheel mounting members can be removably or retractably mounted and a further, generally longitudinally extending, well in which a tow bar attachment can be removably or retractably mounted.
  • the invention is diagrammatically illustrated by way of example in the accompanying drawing which is an elevation from the rear of half of a boat according to the invention.
  • a boat has a hull 1 which is symmetrical about a centre line 2 and can float in water which has a surface level indicated at 3.
  • the boat may for example be a daysailer of 7 metres overall length with a forward cabin arrangement 4.
  • the boat may be devoid of a keel, may have a lowerable centreboard (not shown) and may be provided with buoyancy means to provide a safety aspect for extreme conditions.
  • the buoyancy means may comprise a buoyant member 5 having a first limb 5a_ and a second limb 5b. connected by pivots 6 to angled levers 7 pivotally mounted by pivots 8 to the hull 1 of the boat.
  • buoyant members 5 adopt the position shown in solid lines in the drawing. If, during sailing, the boat s aid heel so that the leeward side buoyant member 5 engages the surface 3 of the water, further heeling will cause the buoyant member 5 and the levers 7 to pivot about the pivots 8 to the position shown in chain dotted lines in the drawing at which the levers 7 have pivoted about the pivots 8 through an angle OC . When the angle OC is achieved, restraint means 9 will restrain the levers 7 from further pivoting and the partial immersion of the buoyant member 5 in the water will apply a righting force to the boat to prevent further heeling and particularly to prevent a complete capsize with total inversion of the boat.
  • Latching means 10 would preferably be provided selectively to lock the buoyant member 5 and the levers 7 in the down position on the windward side of the boat, such means preferably being automatically applied.
  • the boat can still be safely sailed without severe risk of complete capsize and inversion.
  • the boat may be provided with a floodable tank (not shown) in the lower part of the hull whereby the weight of the boat and thus the sailing performance can be controlled.
  • a floodable tank (not shown) in the lower part of the hull whereby the weight of the boat and thus the sailing performance can be controlled.
  • the buoyant members 5 may be pivoted about the pivots 6 to the position shown in broken lines in the drawing in which the free end of the limb 5a. of each buoyant member 5 is immersed in the water below the water level 3 and stabilises the boat by giving it extra width.
  • the boat could be provided with a motor and when used for motoring the buoyant members 4 could be positioned in the dotted line position effectively to give a trimaran configuration.
  • the upper aft part of the boat that is to say that part rearwardly of the cabin 4 could be provided as a deck moulding which could be elevated, when desired, to a level substantially equal to or higher than that of the top of the cabin 4 thereby providing a roof which, with for example rolled down curtains, could permit the boat to be converted to a houseboat configuration.
  • the hull 1 of the boat could be provided with wells one on each side towards the rear in which cartridge wheel assemblies could be mounted either removably or retractably, each cartridge wheel assembly mounting a wheel at its lower end, and a longitudinally extending recess could be provided in the stem of the boat at the bow in which a removable or retractable tow bar could be mounted, thereby providing, with the cartridge wheel assemblies, a three part trailer the chassis of which is effectively formed by the hull of the boat.
  • the boat of the invention could have its weight reduced to half the weight of a similar size boat, thereby greatly improving its sailing performance, without compromising the safety aspect.

Landscapes

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

Abstract

Voilier léger (1) muni sur ses flancs opposés de flotteurs (5) qui ont prise sur l'eau (3) lorsque le bateau gîte au-delà d'un angle donné. Ces flotteurs (5) sont reliés au bateau par un coupleur à mouvement à vide qui leur permet de se déplacer par rapport au bateau (1) de manière à le laisser s'incliner au-delà dudit angle donné avant qu'ils ne commencent à excercer sur lui une force de redressement sensible. Une fois déplacés pour former une autre configuration, les flotteurs pénètrent dans l'eau et donnent au voilier une forme de trimaran.
PCT/GB1990/001650 1989-10-27 1990-10-26 Voilier WO1991006467A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898924284A GB8924284D0 (en) 1989-10-27 1989-10-27 A sailing boat
GB8924284.6 1989-10-27

Publications (1)

Publication Number Publication Date
WO1991006467A1 true WO1991006467A1 (fr) 1991-05-16

Family

ID=10665309

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001650 WO1991006467A1 (fr) 1989-10-27 1990-10-26 Voilier

Country Status (3)

Country Link
AU (1) AU7042091A (fr)
GB (1) GB8924284D0 (fr)
WO (1) WO1991006467A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011012895A1 (fr) * 2009-07-29 2011-02-03 William Aldiss Embarcation dotee de flotteur

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369670A (en) * 1920-02-20 1921-02-22 John A Kauffman Boat
US3145682A (en) * 1961-07-06 1964-08-25 Truffert Louis Marie Alberic Buoyant protective device for boats
FR1574766A (fr) * 1967-05-11 1969-07-18
US4159006A (en) * 1977-06-27 1979-06-26 Thurston John W Multihull vessels
GB2067148A (en) * 1980-01-10 1981-07-22 Andersson L G Trimarans
DE3408582A1 (de) * 1984-03-09 1985-09-12 Volker 2000 Barsbüttel Dittloff Wasserfahrzeug, insbesondere segelboot

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369670A (en) * 1920-02-20 1921-02-22 John A Kauffman Boat
US3145682A (en) * 1961-07-06 1964-08-25 Truffert Louis Marie Alberic Buoyant protective device for boats
FR1574766A (fr) * 1967-05-11 1969-07-18
US4159006A (en) * 1977-06-27 1979-06-26 Thurston John W Multihull vessels
GB2067148A (en) * 1980-01-10 1981-07-22 Andersson L G Trimarans
DE3408582A1 (de) * 1984-03-09 1985-09-12 Volker 2000 Barsbüttel Dittloff Wasserfahrzeug, insbesondere segelboot

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011012895A1 (fr) * 2009-07-29 2011-02-03 William Aldiss Embarcation dotee de flotteur

Also Published As

Publication number Publication date
GB8924284D0 (en) 1989-12-13
AU7042091A (en) 1991-05-31

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