WO2001038166A1 - Hull and keel - Google Patents
Hull and keel Download PDFInfo
- Publication number
- WO2001038166A1 WO2001038166A1 PCT/GB2000/004478 GB0004478W WO0138166A1 WO 2001038166 A1 WO2001038166 A1 WO 2001038166A1 GB 0004478 W GB0004478 W GB 0004478W WO 0138166 A1 WO0138166 A1 WO 0138166A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- keel
- hull
- water
- width
- weight
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to a hull and keel design for boats of the type that displace the water they pass through rather than skim or place across the surface.
- the first method is to design long narrow hulls since the general rule does not apply to hulls that have a wateriine length exceeding five times the wateriine breadth as these narrow hulls cut through the water without creating fclpw and stern waves that can interact.
- individually these hulls do not provide much resistance to overturning forces so two or three hulls are used together and generally do not use ballast (catamarans and trimarans).
- ballast catamarans and trimarans.
- the disadvantages of this arrangement are excessive width and lack of ability to return to the upright position following capsize.
- the second method is by designing hulls with flat surfaces and no fixed ballast, boats can cease to be displacement types by having the ability to climb out of the trough onto the bow wave and skim or plane across the surface of the water.
- the disadvantages of this arrangement are that size is restricted by the reliance on no fixed ballast with lightweight construction and again lack of ability to return to the upright position following capsize.
- An object of this invention is to provide a hull and keel design that solves the problem of fixed ballast displacement boats creating bow and stern waves that interact to restrict the maximum speed of the hull through the water as describe above. It is an aim to do this without excessive width, with no restriction on size and with the ability to return to the upright position following capsize.
- the present invention provides a hull and keel in which the keel has enough buoyancy to support any ballast and enough additional buoyancy to support the weight of the hull to which it is attached so that the hull rests on or near the surface of the water.
- the buoyancy may be such that the hull is disposed just above or just below the surface of the water. However, it is preferred that it rests on or just s ove the surface of the water rather than in it.
- the length of the keel exceeds five times the width of the keel to prevent the creation on bow and stern waves that can interact to restrict maximum speed. That is to say the overall length of the keel is five times greater than the width of the keel at its widest part. (The rate of change of the keel width along its length can follow conventional practice).
- the hull, on either side of the keel should be as near a horizontal flat plane as possible on or near the surface of the water. The effect of this is to flatten any waves the keel may create and allow the hull to provide immediate resistance to overturning forces.
- the width wise extent of these surfaces will vary according to the particular design. Alternatively, in some designs, these surfaces may exhibit some curvature or inclination which departs from a flat horizontal plane.
- the hull and keel should be made of the lightest boat building materials available, such as plastics reinforced with carbon or glass fibres, or wood or steel or a combination of these or other materials.
- the invention also extends to a boat when provided with a hull and keel according to the invention. It will be understood that the buoyancy of the keel will be sufficient to support the weight of the boat and any pay load.
- Figure 1 shows a section through a keel
- Figure 2 shows a section through a hull and keel
- Figure 3 is a perspective view of a boat embodying the hull and keel according to the invention.
- the keel 3 is hollow in section with enough buoyancy to support its own weight and that of the fixed ballast 2 so that it floats well above the surface of the water 1.
- the keel also has enough additional buoyancy to support the weight of a hull 7 to which it is attached so that the hull 7 rests on the surface of the water 1 rather than in it.
- the length of the keel 3 must always be greater than five times the width of the keel.
- the width of the keel is represented by the arrow referenced 5. It will be understood that the width of the keel will vary along its length. The variation in width of the keel with respect to length will follow conventional practice.
- the hull can have any desired configuration as concerns its length and width. However, where the keel 3 meets the hull 7 there are flat surfaces, shown at 4 and 6 extending outwardly from the keel.
- a boat embodying the hull 7 and keel 3 is shown in Figure 3.
- the above example of the invention is given for description purposes.
- the hull 7 and keel 3 can be of any size.
- the width of the hull 7 in relation to the keel 3 can vary and the shapes of the hull 7 and keel 3 can vary.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU15355/01A AU1535501A (en) | 1999-11-25 | 2000-11-24 | Hull and keel |
EP00977720A EP1232090A1 (en) | 1999-11-25 | 2000-11-24 | Hull and keel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9927730.3 | 1999-11-25 | ||
GBGB9927730.3A GB9927730D0 (en) | 1999-11-25 | 1999-11-25 | Hull and keel |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001038166A1 true WO2001038166A1 (en) | 2001-05-31 |
Family
ID=10865028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/004478 WO2001038166A1 (en) | 1999-11-25 | 2000-11-24 | Hull and keel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1232090A1 (en) |
AU (1) | AU1535501A (en) |
GB (2) | GB9927730D0 (en) |
WO (1) | WO2001038166A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101547358B1 (en) | 2006-06-09 | 2015-08-25 | 메르크 파텐트 게엠베하 | Liquid crystalline medium and liquid crystal display |
RU2708813C1 (en) * | 2018-08-15 | 2019-12-11 | Игнат Михайлович Водопьянов | Stabilized housing of single-hull motor vessel using surfacing on water cushion, with deeply immersed support element |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR339700A (en) * | 1904-01-16 | 1904-06-16 | Jean Baptiste Prudhon | Float fin boat hull |
FR3785E (en) * | 1903-10-07 | 1905-02-25 | Louis Demerliac | New boat hull device |
FR475099A (en) * | 1914-07-13 | 1915-04-09 | August Nogar | Improvements to unsinkable vessels |
GB151157A (en) * | 1919-09-29 | 1920-09-23 | Harry Mitchell Koenig | Improvements in the hulls of navigable vessels |
US1377222A (en) * | 1918-05-31 | 1921-05-10 | James W Russell | Ship |
FR857841A (en) * | 1939-07-12 | 1940-10-01 | Unsinkable boat | |
US3140686A (en) * | 1960-04-11 | 1964-07-14 | Olivotti Elia | Hull of special stabilized shape |
DE1809158A1 (en) * | 1968-11-15 | 1970-07-30 | Kuil Theodor V D | Boat body for a pulling or push boat |
WO1995009102A1 (en) * | 1993-09-29 | 1995-04-06 | Hollandse Signaalapparaten B.V. | A ship's hull |
JPH08301185A (en) * | 1995-05-12 | 1996-11-19 | Tsumeta Tekko Kk | Submerged propulsion-engine-equipped ship |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT7921791V0 (en) * | 1979-06-11 | 1979-06-11 | Marine Union Srl | PNEUMATIC KEEL FOR PNEUMATIC BOATS. |
GB2154183B (en) * | 1984-02-07 | 1987-09-03 | Allen Charles Peter Cox | Improved hull shape and moveable carriage for sailing craft |
EP0648668A1 (en) * | 1993-10-18 | 1995-04-19 | Ernst Mohr | High-speed ship, particularly a ferry |
GB9914909D0 (en) * | 1999-06-26 | 1999-08-25 | Warzytz Paul | Boat |
-
1999
- 1999-11-25 GB GBGB9927730.3A patent/GB9927730D0/en not_active Ceased
-
2000
- 2000-11-24 WO PCT/GB2000/004478 patent/WO2001038166A1/en not_active Application Discontinuation
- 2000-11-24 AU AU15355/01A patent/AU1535501A/en not_active Abandoned
- 2000-11-24 EP EP00977720A patent/EP1232090A1/en not_active Withdrawn
- 2000-11-24 GB GB0028636A patent/GB2356603B/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3785E (en) * | 1903-10-07 | 1905-02-25 | Louis Demerliac | New boat hull device |
FR339700A (en) * | 1904-01-16 | 1904-06-16 | Jean Baptiste Prudhon | Float fin boat hull |
FR475099A (en) * | 1914-07-13 | 1915-04-09 | August Nogar | Improvements to unsinkable vessels |
US1377222A (en) * | 1918-05-31 | 1921-05-10 | James W Russell | Ship |
GB151157A (en) * | 1919-09-29 | 1920-09-23 | Harry Mitchell Koenig | Improvements in the hulls of navigable vessels |
FR857841A (en) * | 1939-07-12 | 1940-10-01 | Unsinkable boat | |
US3140686A (en) * | 1960-04-11 | 1964-07-14 | Olivotti Elia | Hull of special stabilized shape |
DE1809158A1 (en) * | 1968-11-15 | 1970-07-30 | Kuil Theodor V D | Boat body for a pulling or push boat |
WO1995009102A1 (en) * | 1993-09-29 | 1995-04-06 | Hollandse Signaalapparaten B.V. | A ship's hull |
JPH08301185A (en) * | 1995-05-12 | 1996-11-19 | Tsumeta Tekko Kk | Submerged propulsion-engine-equipped ship |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31) * |
Also Published As
Publication number | Publication date |
---|---|
EP1232090A1 (en) | 2002-08-21 |
GB0028636D0 (en) | 2001-01-10 |
AU1535501A (en) | 2001-06-04 |
GB2356603A (en) | 2001-05-30 |
GB2356603B (en) | 2003-04-16 |
GB9927730D0 (en) | 2000-01-26 |
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