US3140686A - Hull of special stabilized shape - Google Patents
Hull of special stabilized shape Download PDFInfo
- Publication number
- US3140686A US3140686A US101890A US10189061A US3140686A US 3140686 A US3140686 A US 3140686A US 101890 A US101890 A US 101890A US 10189061 A US10189061 A US 10189061A US 3140686 A US3140686 A US 3140686A
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- US
- United States
- Prior art keywords
- hull
- boat
- stabilizers
- construction
- water
- 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.)
- Expired - Lifetime
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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
- 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
- B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
-
- 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
- B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
-
- 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
- B63B43/04—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability
- B63B2043/047—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving stability by means of hull shapes comprising a wide hull portion near the design water line, and a slender, buoyancy providing, main hull portion extending towards the bottom
Definitions
- the wide-bottomed boat is more suitable for use with sail.
- the wide-bottomed hull encounters more friction in the water and is thus less fit to be used with oars.
- FIGURE 1 is a side elevational view of a boat hull constructed in accordance with the principles of the present invention
- FIGURE 2 is a plan view of FIGURE 1;
- FIGURE 3 is an end elevational view of the hull shown in FIGURE 1 as viewed from the front end;
- FIGURE 4 is a side elevational view of another form of a hull constructed in accordance with the principles of the present invention and suited for use as a speed boat;
- FIGURE 5 is a plan view of the hull shape shown in FIGURE 4.
- the keel K in the dipped or underwater body portion has a remarkable hydro-dynamical shape. It is thin and long to reduce resistance of the underwater body portion in passing through the water. Above the waterline GL the hull widens out at each side to form two side stabilizers ST, the stabilizers extending parallel to the water surface in normal floating position of the hull and further extending from stem to stern, which during heeling of the hull, skim over the water to provide a counter-balancing force of buoyancy in the hull.
- the stabilizers ST comprise in addition to the outer hull, an inner wall SD so that the stabilizer is in fact a water tight void serving as a flotation box extending all around the hull.
- the stabilizers provide a construction of considerable lightness and stoutness. It has been found that the stabilizers will keep the hull afloat even if the entire underwater body portion of the hull is full of water.
- a hull of the present construction increases seaworthiness and since the keel is very sharp and deeply dipped, a high order of speed can be achieved in a rough sea without flappings of the keel. Very large hulls can have a thin and deep keel laden with ballast.
- Another advantage of the construction of the present invention stems from the fact that the use of side stabilizers allows for a wider beam and it follows that more room and useful space within the hull is available.
- the entire wall SD can be used as part of the seats S to provide arm rests or back rests for persons seated in the boat. Since the underwater body portion of the hull is thin and deeply dipped, the load placed in the boat can be centered well down in the underwater body portion, thus reducing top heaviness.
- FIGURES 1 through 3 The above stated hull construction is applicable to boats of any size and used for any multitude of purposes. 'llie hull illustrated in FIGURES 1 through 3 is for a boat about 5 meters long with a beam of approximately 1.7 meters.
- FIGURES 4 and 5 show another form of bull constructed in accordance with the principles of the present invention for use as a speed boat.
- the bottom of the underwater body is made flat instead of curved.
- the stabilizers also has a fiat bottom and they slant upwardly from a low point near the stern towards the stern. This form of construction is particularly adapted for use with speed boats since the stabilizers assist in the rearing of the hull at the start.
- a boat hull comprising a hydro-dynamically shaped underwater body portion extending from stem to stern and having a sharp keel and curved sides extending outwardly of said keel, and an integral overwater portion Patented July '14, 1964 having two hydro-dynamic side stabilizers extending from stem to stern on both sides of said underwater body portion, each of said stabilizers having a substantially fiat and substantially horizontal undersurface located above the waterline and extending outwardly from one of said 5 curved sides, and a substantially vertical side extending above said undersurface and a convex surface joining said under-surface with said side, whereby in water said underwater portion has a cleaving effect While said over- 10 water portion has a planing effect.
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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)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
July 14, 1964 E. OLlVOTTl 3,140,686
HULL OF SPECIAL STABILIZED SHAPE Filed April 10, 1961 v 2 Sheets-Sheet 1 um N 5 G K (D 7 INVENTOR.
ELIA OLIVOTTI BY [15A a) r/ A TTOHVE Y5 HULL. OF SPECIAL STABILIZED SHAPE Filed April 10, 1961 2 Sheets-Sheet 2 INVENTOR.
ELIA ouvo'rn By r United States Patent "ice Claims priority, application Italy Apr. 11, 1960 1 Claim. (Cl. 1149-56) This invention relates to hull shapes and refers more particularly to a specially shaped hull for boats and ships which enables them to travel through the water at high speed while at the same time, provides increased stability and seaworthiness.
It is well known that pulling boats in order to be swift at the pushing oars must be slender hulled and have a curved bottom. Further, the loading must be maintained on or near the center line. However, these boats are not well suited for use with sails because they heel too easily before the wind thereby being susceptible to easy capsizing.
On the other hand, the wide-bottomed boat is more suitable for use with sail. However, the wide-bottomed hull encounters more friction in the water and is thus less fit to be used with oars.
It is with the above-mentioned limitations in known hull designs that the present construction has been evolved and it is accordingly a primary object of the present invention to provide a boat and ship hull that is equally suited for use with oars, sail, or motor power.
It is another object of the present invention to provide a hull construction that couples excellent gliding characteristics with those of stability, safety and seaworthiness.
These and other objects of the present invention which will become apparent from the following specification and claim are achieved by the provision of a hull shape in which the dipped part (or underwater portion) has been designed in order to reduce as much as possible the friction losses generated in moving through the water. Above the waterline, the hull is widened out to form two hydro-dynamical side stabilizers which skim over the water only during the side heeling of the boat or ship.
The specific construction details of the present invention will be made more manifest in the following specification taken in conjunction with the drawings wherein:
FIGURE 1 is a side elevational view of a boat hull constructed in accordance with the principles of the present invention;
FIGURE 2 is a plan view of FIGURE 1;
FIGURE 3 is an end elevational view of the hull shown in FIGURE 1 as viewed from the front end;
FIGURE 4 is a side elevational view of another form of a hull constructed in accordance with the principles of the present invention and suited for use as a speed boat; and
FIGURE 5 is a plan view of the hull shape shown in FIGURE 4.
Referring now in greater detail to FIGURES 1 through 3 of the accompanying drawings, wherein like reference numerals indicate like parts, the keel K in the dipped or underwater body portion has a remarkable hydro-dynamical shape. It is thin and long to reduce resistance of the underwater body portion in passing through the water. Above the waterline GL the hull widens out at each side to form two side stabilizers ST, the stabilizers extending parallel to the water surface in normal floating position of the hull and further extending from stem to stern, which during heeling of the hull, skim over the water to provide a counter-balancing force of buoyancy in the hull. The stabilizers ST comprise in addition to the outer hull, an inner wall SD so that the stabilizer is in fact a water tight void serving as a flotation box extending all around the hull. In addition to the buoyancy factor imparted to the hull by the stabilizers, they provide a construction of considerable lightness and stoutness. It has been found that the stabilizers will keep the hull afloat even if the entire underwater body portion of the hull is full of water.
One of the advantages of this type of construction, as compared to that comomnly known, is the fact that when one side of a boat is pressed down, the hull pivots on its longitudinal axis and as soon as this heeling takes place, the counter-balancing effect of the stabilizers immediately provides resistance to further heeling, whereas in the prior art construction, the boat heels some times to a point dangerously approaching capsizing before the counterbalancing force of the hull itself acts to right it.
Thus, we see that a hull of the present construction increases seaworthiness and since the keel is very sharp and deeply dipped, a high order of speed can be achieved in a rough sea without flappings of the keel. Very large hulls can have a thin and deep keel laden with ballast.
Another advantage of the construction of the present invention stems from the fact that the use of side stabilizers allows for a wider beam and it follows that more room and useful space within the hull is available. In addition, the entire wall SD can be used as part of the seats S to provide arm rests or back rests for persons seated in the boat. Since the underwater body portion of the hull is thin and deeply dipped, the load placed in the boat can be centered well down in the underwater body portion, thus reducing top heaviness.
The above stated hull construction is applicable to boats of any size and used for any multitude of purposes. 'llie hull illustrated in FIGURES 1 through 3 is for a boat about 5 meters long with a beam of approximately 1.7 meters.
FIGURES 4 and 5 show another form of bull constructed in accordance with the principles of the present invention for use as a speed boat. In this case, the bottom of the underwater body is made flat instead of curved. In addition, the stabilizers also has a fiat bottom and they slant upwardly from a low point near the stern towards the stern. This form of construction is particularly adapted for use with speed boats since the stabilizers assist in the rearing of the hull at the start.
It should be apparent that the construction described above has been given by way of illustration and not by way of limitation and that it is subject to variations and modifications. All such variations and modifications are to be included within the scope of the present invention.
What is claimed is:
A boat hull comprising a hydro-dynamically shaped underwater body portion extending from stem to stern and having a sharp keel and curved sides extending outwardly of said keel, and an integral overwater portion Patented July '14, 1964 having two hydro-dynamic side stabilizers extending from stem to stern on both sides of said underwater body portion, each of said stabilizers having a substantially fiat and substantially horizontal undersurface located above the waterline and extending outwardly from one of said 5 curved sides, and a substantially vertical side extending above said undersurface and a convex surface joining said under-surface with said side, whereby in water said underwater portion has a cleaving effect While said over- 10 water portion has a planing effect.
References Cited in the file of this patent UNITED STATES PATENTS FOREIGN PATENTS Great Britain Sweden Jan. 12, France Mar. 15,
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT3140686X | 1960-04-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3140686A true US3140686A (en) | 1964-07-14 |
Family
ID=11437004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US101890A Expired - Lifetime US3140686A (en) | 1960-04-11 | 1961-04-10 | Hull of special stabilized shape |
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US (1) | US3140686A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988006115A1 (en) * | 1987-02-12 | 1988-08-25 | Carib Dory (Aust.) Pty Limited | Multi-convertible boat hull |
US4774902A (en) * | 1984-06-14 | 1988-10-04 | Sinclair & Associates, Inc. | Mid-planing hull |
EP0298050A1 (en) * | 1987-07-01 | 1989-01-04 | AKZO S.r.l. | Hull for sailboat |
US5163377A (en) * | 1991-05-09 | 1992-11-17 | Dyna-Yacht, Inc. | Sailing yacht |
US5622130A (en) * | 1995-05-22 | 1997-04-22 | Dyna-Yacht, Inc. | Heel control system for sailing yachts and sailing yacht hull |
US6116180A (en) * | 1993-12-16 | 2000-09-12 | Paragon Mann Limited | Boat |
WO2001038166A1 (en) * | 1999-11-25 | 2001-05-31 | Michael John Wingeatt | Hull and keel |
US6520107B1 (en) | 1999-08-19 | 2003-02-18 | William L. Hickok | Chambered hull boat design method and apparatus |
US20060231003A1 (en) * | 2005-04-19 | 2006-10-19 | Baylor Wesley T | Non-planing boat hull |
US20060254486A1 (en) * | 2005-05-12 | 2006-11-16 | Ashdown Glynn R | Winged hull for a watercraft |
US7210422B1 (en) | 2003-03-07 | 2007-05-01 | Aluminum Chambered Boats Llc, Inc. | Fin stabilizer to reduce roll for boats in turns method and apparatus |
US20070125290A1 (en) * | 2005-11-15 | 2007-06-07 | Warren Theodore L | Kayak having stabilizing flares |
US20090188416A1 (en) * | 2007-03-09 | 2009-07-30 | Hickok William L | Fin stabilizer to reduce roll for boats in turns method and apparatus |
US20150367917A1 (en) * | 2012-12-11 | 2015-12-24 | Nautilus Minerals Pacific Pty | Production Support and Storage Vessel |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR338271A (en) * | 1903-11-23 | 1904-05-14 | Alfred Henri Brosseau | Motor boat slider |
GB190501690A (en) * | 1904-10-06 | 1905-08-17 | Louis Demerliac | Improvements in or relating to the Construction of Ships' Hulls. |
US2361409A (en) * | 1943-12-02 | 1944-10-31 | Munro Gordon | Ship hull |
US2887978A (en) * | 1957-08-05 | 1959-05-26 | Glasspar Company | Keel for planing-type boat hulls |
US2980924A (en) * | 1958-11-06 | 1961-04-25 | Canazzi Henry Donald | Molded speed boat hull |
-
1961
- 1961-04-10 US US101890A patent/US3140686A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR338271A (en) * | 1903-11-23 | 1904-05-14 | Alfred Henri Brosseau | Motor boat slider |
GB190501690A (en) * | 1904-10-06 | 1905-08-17 | Louis Demerliac | Improvements in or relating to the Construction of Ships' Hulls. |
US2361409A (en) * | 1943-12-02 | 1944-10-31 | Munro Gordon | Ship hull |
US2887978A (en) * | 1957-08-05 | 1959-05-26 | Glasspar Company | Keel for planing-type boat hulls |
US2980924A (en) * | 1958-11-06 | 1961-04-25 | Canazzi Henry Donald | Molded speed boat hull |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4774902A (en) * | 1984-06-14 | 1988-10-04 | Sinclair & Associates, Inc. | Mid-planing hull |
WO1988006115A1 (en) * | 1987-02-12 | 1988-08-25 | Carib Dory (Aust.) Pty Limited | Multi-convertible boat hull |
EP0298050A1 (en) * | 1987-07-01 | 1989-01-04 | AKZO S.r.l. | Hull for sailboat |
US5163377A (en) * | 1991-05-09 | 1992-11-17 | Dyna-Yacht, Inc. | Sailing yacht |
US6116180A (en) * | 1993-12-16 | 2000-09-12 | Paragon Mann Limited | Boat |
US5622130A (en) * | 1995-05-22 | 1997-04-22 | Dyna-Yacht, Inc. | Heel control system for sailing yachts and sailing yacht hull |
US6520107B1 (en) | 1999-08-19 | 2003-02-18 | William L. Hickok | Chambered hull boat design method and apparatus |
WO2001038166A1 (en) * | 1999-11-25 | 2001-05-31 | Michael John Wingeatt | Hull and keel |
US7210422B1 (en) | 2003-03-07 | 2007-05-01 | Aluminum Chambered Boats Llc, Inc. | Fin stabilizer to reduce roll for boats in turns method and apparatus |
US7513204B2 (en) | 2003-03-07 | 2009-04-07 | Aluminum Chambered Boats, Inc. | Fin stabilizer to reduce roll for boats in turns method and apparatus |
US20080216730A1 (en) * | 2003-03-07 | 2008-09-11 | Hickok William L | Fin stabilizer to reduce roll for boats in turns method and apparatus |
US20060231003A1 (en) * | 2005-04-19 | 2006-10-19 | Baylor Wesley T | Non-planing boat hull |
WO2006113846A2 (en) * | 2005-04-19 | 2006-10-26 | Lear Baylor, Inc. | Non-planing boat hull |
WO2006113846A3 (en) * | 2005-04-19 | 2009-05-07 | Lear Baylor Inc | Non-planing boat hull |
US20060254486A1 (en) * | 2005-05-12 | 2006-11-16 | Ashdown Glynn R | Winged hull for a watercraft |
US20070125290A1 (en) * | 2005-11-15 | 2007-06-07 | Warren Theodore L | Kayak having stabilizing flares |
US7370596B2 (en) * | 2005-11-15 | 2008-05-13 | Theodore Lloyd Warren | Kayak having stabilizing flares |
US20090188416A1 (en) * | 2007-03-09 | 2009-07-30 | Hickok William L | Fin stabilizer to reduce roll for boats in turns method and apparatus |
US20150367917A1 (en) * | 2012-12-11 | 2015-12-24 | Nautilus Minerals Pacific Pty | Production Support and Storage Vessel |
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