A planing hull having a conical contour extending from the bow portion to a stern portion having a flat surface on each side of the keel, a wide lip chine having a lip portion, and a transom separating the bow portion and the stern portion creating a step between the bow portion and the stern portion. A flat keel portion extends from the stern to the mid hull transom.
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1. A planing boat hull for planing upon a water surface, the boat hull comprising:
an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween; the forward hull including an arcuate bow, a V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the V-shaped keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; and the aft hull including a stern and a generally flat aft keel extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions.
19. A planing boat hull for planing upon a water surface, the boat hull comprising:
an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween toward a respective chine portion; the forward hull including an arcuate bow, a V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the V-shaped keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; and the aft hull including a stern and an aft keel extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions and sufficient air is induced under the lower hull from beneath the chine portions via the stepped offset to relieve friction and drag on the hull.
20. A planing boat hull for planing upon a water surface, the boat hull comprising:
an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween toward a respective chine portion; the forward hull including an arcuate bow, a V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset to form a delta portion on one side of the offset; and the aft hull including a stern and an aft keel extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern to form a continuation of the delta portion on the other side of the offset; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions and sufficient air is induced under the lower hull beneath the chine portions via the stepped offset to relieve friction and drag on the hull.
18. A planing boat hull for planing upon a water surface, the boat hull comprising:
an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween toward a respective chine portion; the forward hull including an arcuate bow, a V-shaped forward keel having a first configuration extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the V-shaped forward keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; and the aft hull including a stern and an aft keel having a second configuration different from the first configuration of said forward keel so that it is dicontinuous therewith and extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; each of the generally planar forward planing portions and each of the generally planar aft planing portions having substantially equal angles of attack; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions and sufficient air is induced under the lower hull from beneath the chine portions via the stepped offset to relieve friction and drag on the hull.
2. The planing boat hull of
each of the generally planar forward planing portions and each of the generally planar aft planing portions have an acute angle of attack and an acute dead rise angle; and the angle of attack and dead rise angle on each of the generally planar forward planing portions and each of the generally planar aft planing portions are substantially equal.
4. The planing boat hull of
each of the generally planar forward planing portions and each of the generally planar aft planing portions have an acute angle of attack and an acute dead rise angle; and the angle of attack on the forward planing portions is between 0-1 degrees greater than the angle of attack of the aft planing portions.
5. The planing boat hull of
the angle of attack on each of the aft planing portions is between 2-3 degrees.
6. The planing boat hull of
the generally planar forward planing portions and the generally planar aft planing portions are parallel to one another.
7. The planing boat hull of
the generally planar aft planing portions extend outboard from the aft keel to the respective chine portions.
8. The planing boat hull of
the width of the aft keel is narrower than either of the planar aft planing portions.
9. The planing boat hull of
the hull has a maximum beam width and the width of the generally flat aft keel is approximately 10% of the maximum beam width.
11. The planing boat hull of
the overall width of each of the chine portions at the maximum beam width of the hull is approximately 10% of the width of the forward hull and the aft hull at the maximum beam width.
12. The planing boat hull of
the stepped offset is arcuate extending from one of the chine portions to the other of the chine portions.
13. The planing boat hull of
the stepped offset curves forwardly from the aft keel to each of the chine portions thereby funneling air beneath the hull during planing and reducing suction on the hull.
14. The planing boat hull of
the length of the aft keel is 30-50% the length of the entire hull.
17. The planing boat hull for planing upon a water surface, the boat hull comprising:
an upper hull, a lower hull, and a pair of laterally spaced and generally horizontally extending chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween; the forward hull including an arcuate bow which is at least partially conical in shape and a V-shaped forward keel trailing therefrom with two generally planar planing portions extending symmetrically outboard from the forward keel toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; the aft hull including a stern, a generally flat aft keel extending from the stepped offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel to the respective chine portions; the offset curving forwardly from the aft keel to each of the chine portions thereby funneling air rearwardly beneath the hull during planing to reduce suction on the hull; the hull having a maximum beam width and the width of the aft keel is generally 10% of the maximum beam width and the length of the aft keel is 30-50% the length of the entire hull; the aft planar portions having an angle of attack between 2-3 degrees and the forward planing portions having an angle of attack 0-1 degrees greater than the aft planing portions, each of the aft portions and forward planing portions having substantially equal dead rise angles; wherein when the hull is moving forward across the water surface, the forward hull creates a bow wave which surges under the hull causing the aft keel to ride on the bow wave, and when the hull reaches planing speed, the bow wave moves aft, smoothly lifting the aft hull onto plane on the aft keel and aft planing portions.
21. A planing boat hull for planing upon a water surface, the boat hull comprising:
an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween; the forward hull including an arcuate bow, a V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the V-shaped keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; and the aft hull including a stern and a generally flat aft keel extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions, and wherein the generally planar forward planing portions and the generally planar aft planing portions are parallel to one another.22. A planing boat hull for planing upon a water surface, the boat hull comprising: an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween; the forward hull including an arcuate bow, a V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the V-shaped keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; and the aft hull including a stern and a generally flat aft keel extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions, and wherein the stepped offset is arcuate extending from one of
the chine portions to the other of the chine portions.23. A planing boat hull for planing upon a water surface, the boat hull comprising: an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween; the forward hull including an arcuate bow, a V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the V-shaped keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; and the aft hull including a stern and a generally flat aft keel extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions, and wherein the stepped offset is arcuate extending from one of the chine portions to the other of the chine portions, and the stepped offset curves forwardly from the aft keel to each of the chine portions thereby funneling air beneath the hull during planing and reducing suction on the hull.24. A planing boat hull for planing upon a water surface, the boat hull comprising: an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween; the forward hull including an arcuate bow, a V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the V-shaped keel of the forward hull toward the respective chine portions and extending aftward from an apex adjacent the arcuate bow to the stepped offset; and the aft hull including a stern and a generally flat aft keel extending from the offset to the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset to the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions, and wherein the arcuate bow is at least partially conical.25. A planing boat hull for planing upon a water surface, the boat hull comprising: an upper hull, a lower hull, and a pair of laterally spaced chine portions connecting therebetween; the lower hull including a forward hull and an aft hull and a stepped offset extending transversely therebetween toward a respective chine portion; the forward hull including an arcuate bow portion, a generally V-shaped keel extending from the bow to the stepped offset, and two generally planar forward planing portions extending symmetrically outboard from the keel of the forward hull toward the respective chine portions and aftward to the stepped offset; and the aft hull including a stern and an aft keel extending from the offset toward the stern and a pair of generally planar aft planing portions extending symmetrically outboard from the aft keel toward the chine portions and aftward from the offset toward the stern; the stepped offset connecting the forward planing portions to the aft keel and the aft planing portions; wherein during planing of the hull, the hull planes on the water surface upon the forward planing portions and the aft keel and aft planing portions.26. The planing boat hull of each of the generally planar forward planing portions and each of the generally planar aft planing portions have an acute angle of attack and an acute dead rise angle; and the angle of attack and dead rise angle on each of the generally planar forward planing portions and each of the generally planar aft planing portions are substantially equal.27. The planing boat hull of claim 26 wherein: the angle of attack is between 2-3 degrees.28. The planing boat hull of claim 25 wherein: each of the generally planar forward planing portions and each of the generally planar aft planing portions have an acute angle of attack and an acute dead rise angle; and the angle of attack on the forward planing portions is between 0-1 degrees greater than the angle of attack of the aft planing portions.29. The planing boat hull of claim 28 wherein: the angle of attack on each of the aft planing portions is between 2-3 degrees.30. The planing boat hull of claim 25 wherein: the generally planar forward planing portions and the generally planar aft planing portions are parallel to one another.31. The planing boat hull of claim 25 wherein: the generally planar aft planing portions extend outboard from the aft keel to the respective chine portions.32. The planing boat hull of claim 25 wherein: the width of the aft keel is narrower than either of the planar aft planing portions.33. The planing boat hull of claim 25 wherein: the hull has a maximum beam width and the width of the aft keel is approximately 10% of the maximum beam width.34. The planing boat hull of claim 33 wherein: the overall width of each of the chine portions at the maximum beam width of the hull is approximately 10% of the width of the forward hull and the aft hull at the maximum beam width.35. The planing boat hull of claim 25 wherein: the stepped offset is arcuate extending from one of the chine portions to the other of the chine portions.36. The planing boat hull of claim 35 wherein: the stepped offset extends forwardly from the aft keel to each of the chine portions thereby funneling air beneath the hull during planing and reducing suction on the hull.37. The planing boat hull of claim 25 wherein: the length of the aft keel is 30-50% the length of the entire hull.38. The planing boat hull of claim 25 wherein: the arcuate bow portion is at least partially conical.39. The planing boat hull of claim 25 wherein: chine portions extend generally horizontally. |
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1. Field of the Invention
This invention relates to hull structures for boats and is more particularly directed to a planing boat hull.
2. Description of the Prior Art
In boating terminology there are two basic hull structures: planing hulls and displacement hulls. A planing hull is one which rides on top of the water, making it fast and maneuverable. A displacement hull on the other hand has more of .α λ, as seen in FIG. 7, of hull portions 18 and 20 are the same as the transom 30 and at the stern 32. The dead rise angle of any hull is the angle which the bottom surfaces make with the horizontal. It is the flat planar hull portions 18, and 20 which increases the hull's lateral stability at non-planing speeds.
The dead rise angle γ on the hull portion 18 and 20 ideally should be generally equal to the dead rise angle γ on the planar forward portion on bow portion 12. The angle of attack α on hull portions 18 and 20 should be at .Badd.2°-3° and the angle of attack β on the delta conic planar forward portion on bow portion 12 should be equal to that of α (such that the hull portions 18 and 20 are parallel to the conic planar forward portions) or possibly up to 1° greater.
A substantially flat or concaved keel portion 16' extends from the mid-boat transom 30 to the stern 32, best shown in FIGS. 3 and 4. The length of the keel portion 16' is approximately between 30-50 percent of the overall length of the hull from the bow 34 to the stern 32. The balance of the keel 16 is the apex of the V-shape of the bow portion 12, keeping in mind that the keel, which is the backbone of any good planing hull, is one integral member extending from the bow to the stern. The width of the flat or concaved keel portion 16' is about 10 percent of the width or beam of the hull to provide a surface to ride the bow waves, much like a water ski or a surf board. Once on plane, the forward and aft hull portions 12 and 14, respectively, riding at their optimum planing angle and the hull, surfs on the bow wave at higher speeds. This is aided by the described hull design having a transom 30 which induces air under the hull as the hull reaches planing speed, relieving suction.
The hull 10 has parallel lateral strakes, not shown, which run along the bow portion 12 to the mid hull transom 30 and from behind the transom-step 30 to the stern 32. The number of strakes may vary according to the hull length and beam.
In operation, the hull 10 with a unique duo-delta conical hull portion 12 having a conical entry, a delta constant planing stern portion 14 and wide lip chines C displaces a delta pattern in the water when on plane. The bow portion creates a bow wave which is forced or surges under the hull 10, causing the stern portion 14 to ride this wave. The mid-hull transom 30 relieves the normal "hump" or impact when the hull climbs this bow wave lifting the boat onto plane.
As the boat reaches its plane, air is induced under the hull 10 via the mid-hull transom 30 and the shape of the bow portion 12. This induced air relieves any cavitation, suction or other phenomena which causes friction and drag on the hull. The arcuately shaped transom 30 enhances the induced air across the entire stern portion 14 enabling smoother and faster "lifting" onto plane without the impact of other hull designs.
Once on plane, the hull 10 is capable of riding the bow wave using the flat or concaved keel portion 16' to surf on the wave, making the boat extremely maneuverable on hard turns with a wide open throttle.
While only one embodiment of the invention has been disclosed, other embodiments may become apparent to those skilled in the art, therefore one should study the drawings, description and claims for a full understanding of the invention.
| Patent | Priority | Assignee | Title |
| 10059405, | May 16 2013 | High stability low drag boat hull keel having inverted foil configuration | |
| 11034413, | Jun 11 2014 | MONOTRICAT SRL C R | Hull for low drag boats |
| 6647909, | Oct 01 2002 | Waveless hull | |
| 6666160, | Mar 15 2000 | Eagleblade, LLC | High aspect dynamic lift boat hull |
| 6966271, | Oct 01 2002 | Waveless hull | |
| 7055450, | May 06 2004 | Transportation vehicle and method operable with improved drag and lift | |
| 8240268, | Jun 16 2009 | Safe Boats International L.L.C.; SAFE BOATS INTERNATIONAL L L C | Watercraft with stepped hull and outboard fins |
| 8408151, | Dec 23 2009 | Alexander, von Lignau | Watercraft hull and associated methods |
| 9284019, | May 16 2013 | Ellipsoidal V-hull | |
| 9751594, | May 16 2013 | High stability low drag boat hull |
| Patent | Priority | Assignee | Title |
| 1318413, | |||
| 1536940, | |||
| 1743907, | |||
| 1766360, | |||
| 1782320, | |||
| 1782893, | |||
| 2162705, | |||
| 2397583, | |||
| 2423860, | |||
| 2634698, | |||
| 2969760, | |||
| 3075488, | |||
| 3091206, | |||
| 3111923, | |||
| 3203389, | |||
| 3216389, | |||
| 3225729, | |||
| 3363598, | |||
| 3382833, | |||
| 3457064, | |||
| 3463109, | |||
| 3468282, | |||
| 3469557, | |||
| 3568617, | |||
| 3602179, | |||
| 3625173, | |||
| 3661109, | |||
| 3763810, | |||
| 3802370, | |||
| 3930455, | Sep 19 1974 | Boat hull construction | |
| 3974790, | Jan 23 1974 | Bottom for planing boats | |
| 3996869, | Sep 08 1975 | Dihedral tunnel boat hull | |
| 4022143, | Sep 24 1975 | KRENZLER, LILY S | Wide-keeled boat hull with multiple, straight line planing surfaces |
| 4027613, | Dec 10 1975 | Brunswick Corporation | Planing boat hull |
| 4091761, | Mar 23 1977 | Modified tunnel hull boat | |
| 4193370, | Mar 21 1977 | Planing boat hull | |
| 4231314, | Feb 17 1978 | Hydroplane boat | |
| 4233920, | May 24 1979 | Wood Manufacturing Company | Vee hull construction |
| 4409922, | Feb 04 1980 | V-Shaped bottom for speedy motorboats having improved planing supporting skids | |
| 4528931, | Aug 15 1983 | Stepped flotation apparatus | |
| 4619215, | Apr 03 1985 | Wood Manufacturing Company, Inc. | Dual step, vee type planing hull for power boats |
| 4649851, | Sep 12 1985 | High speed power boat for calm and rough seaways | |
| 4689026, | Aug 26 1985 | SMALL VENTURES, INC | Propeller tunnel baffle and method |
| 4702188, | Dec 13 1984 | OY KINETIK LTD | Bottom structure of a boat |
| 4705085, | Dec 09 1985 | Inflatable beverage insulator | |
| 4748929, | Mar 23 1987 | Planing catamaran | |
| 4843988, | Jul 24 1987 | ROTH, BARRY S | Stepped bottom for boat |
| 4903626, | Jun 16 1987 | Planing motor boat hull | |
| 5111767, | May 26 1989 | Boat hulls | |
| 5191853, | May 24 1991 | Stepped hydroplane hull | |
| 5205334, | Oct 03 1991 | Verosol USA Inc.; VEROSOL USA INC | Double layer shade |
| 5231949, | May 08 1990 | Dihedral tunnel boat hull | |
| 5351641, | Feb 09 1993 | Boat hull construction | |
| 5443026, | May 07 1991 | FOUR WINNS, LLC | Boat hull with aft planing members |
| 5456202, | Oct 12 1990 | Planing boat hull | |
| 5685253, | May 27 1992 | Brunswick Corporation | Reduced drag stable Vee bottom planing boat |
| 971029, | |||
| 220661, | |||
| 224275, | |||
| 234349, | |||
| 234685, | |||
| D244841, | Apr 30 1976 | Tunnel hull power boat | |
| D285190, | Nov 28 1984 | Boat hull | |
| D359941, | Feb 04 1994 | Boat | |
| D383109, | May 03 1996 | REGAL MARINE INDUSTRIES, INC | Boat hull |
| 79534, |
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