CA1318817C - Boat with cavity for a boat propulsion device - Google Patents
Boat with cavity for a boat propulsion deviceInfo
- Publication number
- CA1318817C CA1318817C CA000567978A CA567978A CA1318817C CA 1318817 C CA1318817 C CA 1318817C CA 000567978 A CA000567978 A CA 000567978A CA 567978 A CA567978 A CA 567978A CA 1318817 C CA1318817 C CA 1318817C
- Authority
- CA
- Canada
- Prior art keywords
- boat
- cavity
- planing
- transom
- raised
- 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 - Fee Related
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/30—Mounting of propulsion plant or unit, e.g. for anti-vibration purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/02—Mounting of propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Toys (AREA)
- Ship Loading And Unloading (AREA)
- Exhaust Silencers (AREA)
Abstract
ABSTRACT
A boat with a generally vertical transom includes a water planing hull bottom surface shaped to provide a minimum wetted area when on plane and a raised bottom surface above the bottom surface. The raised bottom surface contains a hole therethrough adjacent the transom for mounting a boat propulsion device having a downward and rearward extending propeller drive. The raised bottom surface forms an upward cavity having an open end notched through the transom within the bottom surface of the boat.
In a second embodiment the boat includes a second raised bottom surface adjacent the upward cavity.
A boat with a generally vertical transom includes a water planing hull bottom surface shaped to provide a minimum wetted area when on plane and a raised bottom surface above the bottom surface. The raised bottom surface contains a hole therethrough adjacent the transom for mounting a boat propulsion device having a downward and rearward extending propeller drive. The raised bottom surface forms an upward cavity having an open end notched through the transom within the bottom surface of the boat.
In a second embodiment the boat includes a second raised bottom surface adjacent the upward cavity.
Description
19~/4 1:~18~17 30~T WITH CQVITY FOR
~OAT PROPULSION DEVICE
The field of the invention relates to a boat and more particularly concerns a boat with a planing hull having a cavity adjacent the transom with a hole in the top for mounting a boat propulsion device with an engine inside a boat and a steerable and trimmable drive under a boat and partly within the cavity.
Prior boat propu1sion devices which mount on a boat include the stern drive and the outboard~ A boat which uses a stern drive does not use or require a cavity since the stern drive has an engine inside the boat and a drive at the rear of the boat. A boat which uses an outboard also does not use or require a cavity since the outboard mounts outside the boat as an unit assembly.
Other pri~r propulsion devices such as described in U. S. Patent 2,209,302 issued to L.. J. Johnson et al provide a cutout through the bottom of the boat and the transom for mountin~ the device.
`` 1318817 198~/4 Other prior propulsion devices suoh as described jn US.
patents 2,976,836 and 3,164,122 issued to L.J. Fag~ol mount the devlce through the bottom of the boat.
Other prior propulsion devices suoh as described in U. S. Patents 2,0~4,463 and 3,Bll,~q9 use an upwardly formed portion under the boat hull as an enclosure ~or the propeller shaft whirh angles oown and from inside the boat.
It is believed that these prior shaped hulls do not improve the structure or operational characteristics of the boat.
SU~RY OF THE lNvENTION
In the pre~ent invention a boat contains a planing hull and a raised bottom surface in the stern adjacent the trar,som. Within the raised bottom surface is a generally horizontal hole which provides a simple placement location for a boat propulsion device which mounts through a bottom surface~of a boat. The ra~sed hDle i5 ideally suited for a boat propulsion device which inoludes a drive under, and extending to the rear of the boat, which steers and ~ trim~tilts The raised bottom surface e~tends notched through the transom which~permits the drive of the boat propulsion dsvice which is under the boat to swing upward towards the transom within this notched area for trim/tilt. This transom notch also permits the drive of the boat propulsion device to swing from side to side within the transom notch not only for steering but also for steering at trim positions within the trim range. Neither of these needs is specifically con~idered in known boats and known boat strurtures wlth raised bottom surfaces do not provide the convenience and utilities of mounting a drive at a raised bottom surface which permits ~teerlng and trim~tilt under the boat, 198~/4 The raised bottom surface also forms the top of a drive containing cavity which extends upwardly into the hull with an open end at the transom notch. The cavity includes side wall 5 which are generally vertical The port and starboard side walls are generally parallel to each other and to the chine surfaces of the boat. In driving a boat with these sidewalls it appears that their edges dig in to the water particularly on turns, which provides a solid feel during turns, resulting in a new sense of driving pleasure.
The cavity forward wall is also an unique structure with multiple utilitie5 and advantages. ~s a vertical wall it ends a portion of the boat planing surface along the middle of the boat while providing extended planing surface along the cavity which may act as a form of afterplane surface. This reduces the wetted area of the boat when on plane and accordingly provides a general increase in speed. The vertical walls as a vertical wall conveniently provides an easy-to-use surface for connecting through the boat for exhaust, cooling water, hydraulics etc.
Lastly, it is possible that the cavity vertical side walls, when slightly tapered to the rear assist steering.
In a second embodiment the boat includes a second raised bottom surface adjacent the cavity which assists in reducing the amount of wetted area during an on-plane condition with the general expected advantages from a lesser wetted area achieved.
And of course, there is a significant aesthetic utility and advantage achieved from containing the engine of the boat propulsion device above the cavity and a cavity to simply package the drive.
BRIEF DESCRIPTlON OF THE DRAWINGS
FiQure I i~ a side elevation view of a boat with a 198~/4 boat propulsion device mounted therein.
Figure 2 is an end elevation view of the boat of Figure 1.
Figure 3 is a bottom elevation view of the boat of Figure 1.
Figure 4 is a cross section view on line 4-4 of the boat of Figure 1, appearing with Figur~ 2.
Figure 5 is a bottom elevation view similar to : that of Figure 3 of a second embodiment of a boat.
Fioure ~ is a cross section view on line ~-~ of the boat of Figure 5.
Figure 7 is a cross section view on line 7-7 of the boat of Figure 5.
DESCRIPTION OF THE PREFERRED E~BODIMENT
The boat 10 with a boat propulsion device 11 mounted therein is shown in Figures 1 through 3. The boat 10 which is preferably formed of reinforced fiberglass includes a planing hull 12 and a generally vertically; upright transom 13. The hull 12 includes a bottom planing surface 14 and a pair of bottom chine surfaces 15 and 16. The hull 12 also in~ludes a raised bottom surface 17 adjacent the transom 13. The raised bottom surface 17 includes an opening or hole 18 for positioning and mounting the boat propulsion device 11.
The raised bottom surface 17 extends to the transom 13 and is of a width less than the bottom planing surface 14 of the hull 12 adjacent the transom 13 and between the bottom chine surfaces 15 and 1~. The width of the raised bottom surface 17 provides a desired steering range.
The raised bottom surface 17 forms the top lq of a drive containlng cavity 20 which extends upwardly into the hull lZ. The cavlty 20 extends through the transom 1~
havln~ an op~n end whlch 1~ a notch 21 e~tending upwardly , . . ... . .
into the transom l3.
The cavity 20 inrludes a first portside wall 22, a second starboard side wall 23 and a third forward wall 24, each of the walls connecting between the bottom planing surface 14 and the raised bottom surface 17.
The port side and starboard side walls 22 and 23 of the cavity 20 are generally parallel~ but tapering rearward at an angle of taper 25 as shown in Figure 3 of less than 10 degrees. The preferred taper 25 is in the ~0 range of 2 to 8 degrees.
The side walls 22 and 23 are also generally centered with respect to the centerline 2~ of the boat 10.
The centering of the sidewalls 22 and 23 also centers the cavity 20.
The forward wall 24 is preferably vertically upright similar to the transom 13. It is believed forming this forward wall 13 upright permits it to be positioned as far rearward as possible against the drive 11. This provides more bottom planing surface. It is also believed 20 that the upright forward wall 24 helps to prevent undesirable water flow through the cavity Z0 during on-plane operation of the boat 10.
All the walls, 22, 23, and 24 may have a slight draft of about I degree where necessary for removal of the 25 hull 12 from the boat mold.
The size of the cavity may vary with the size of the boat and the size of the boat propulsion device. For a boat of about 20 feet in length and a boat propulsion device of about 125 horsepower, the width of the cavity 20 is about 30 14 inches at the forward wall 24, the length is about 1 inches and the height i5 about 12 inches. The height varies with different boat propulsion devices 11 and is generally determined by the distance between the mounting 1 3 1 88 1 7 19~
memoer 27 and an anticavitation plate 39. The anticavitation plate 39 preferably is at water level when the boat i5 on plane.
The hole 13 in the raised bottom surface 17 or top 19 of the cavity 20 i5 shaped to match tile mounting member 27 of the boat propulsion device 11. The top 19 of thr- cavity includes a builtup fiberglass area which may include plywood reinforcement.
The cavity itself by its shape and placement provides added strength to the boat 10 as well as strength to mount the drive.
The cavity 20 is shown from the inside of the boat 10 in Figure 4 without the engine 2g of the boat propulsion device 11 mounted above the cavity 20. However an engine exhaust corrector 29 (see Figure 1) may be convenie~tly positioned ~hrough cutout 30 (Figure 4) in the forward wall 24.
~ second embodiment of a boat 31 is shown in Figure 5 through 7. In the second embodiment the same reference numbers refer to parts generally similar to the first embodiment. The second embodiment of the boat 31 includes a second raised bottom surface 32 adjacent to the cavity 20 oetween the chine surfaces 15 and 16. The cavity 33 includes a first portside side wall 34, a second starboard side wall 35, and a third forward side wall 3~.
The height of the second raised bottom surface 32 is in the range of I to 3 inches with the preferred height being about 1 inch.
The second raised bottom surface 32 extends forward from the forward side wall 36 to a forward edge portion 37 a distance in the range of 1 to 6 inches. The preferred distance i5 about 2 inches. The height of the forward edge portion 37 is about 1 to 3 inches with a preferred height ~7f about 1 inch. The second raised bottom surface 3Z also extends to the inner edges 15a and l~a of the chine surfaces 15 and 16.
Figures b and 7 show the cros6 sectional 1318817 198~/4 configuration through the planing hull 12 from forward of the cavity 33 and through the centerline 38 of the cavity 33. These Figure 6 shows the relationship previously described between the cavity 33 and the second raised bottom surface 32.
Figure 7 shows the relationship of the cavity 33 and the second raised surface 32 between the forward side wall 3~ and the forward edge prrtion 37.
While embodiments and application of the invention have been shown and described, it would be apparent to those skilled in the art that modifications are possible without departing from the inventive concepts herein. Therefore, the invention is not to be restricted other than by the scope and equivalency of the following claims.
~OAT PROPULSION DEVICE
The field of the invention relates to a boat and more particularly concerns a boat with a planing hull having a cavity adjacent the transom with a hole in the top for mounting a boat propulsion device with an engine inside a boat and a steerable and trimmable drive under a boat and partly within the cavity.
Prior boat propu1sion devices which mount on a boat include the stern drive and the outboard~ A boat which uses a stern drive does not use or require a cavity since the stern drive has an engine inside the boat and a drive at the rear of the boat. A boat which uses an outboard also does not use or require a cavity since the outboard mounts outside the boat as an unit assembly.
Other pri~r propulsion devices such as described in U. S. Patent 2,209,302 issued to L.. J. Johnson et al provide a cutout through the bottom of the boat and the transom for mountin~ the device.
`` 1318817 198~/4 Other prior propulsion devices suoh as described jn US.
patents 2,976,836 and 3,164,122 issued to L.J. Fag~ol mount the devlce through the bottom of the boat.
Other prior propulsion devices suoh as described in U. S. Patents 2,0~4,463 and 3,Bll,~q9 use an upwardly formed portion under the boat hull as an enclosure ~or the propeller shaft whirh angles oown and from inside the boat.
It is believed that these prior shaped hulls do not improve the structure or operational characteristics of the boat.
SU~RY OF THE lNvENTION
In the pre~ent invention a boat contains a planing hull and a raised bottom surface in the stern adjacent the trar,som. Within the raised bottom surface is a generally horizontal hole which provides a simple placement location for a boat propulsion device which mounts through a bottom surface~of a boat. The ra~sed hDle i5 ideally suited for a boat propulsion device which inoludes a drive under, and extending to the rear of the boat, which steers and ~ trim~tilts The raised bottom surface e~tends notched through the transom which~permits the drive of the boat propulsion dsvice which is under the boat to swing upward towards the transom within this notched area for trim/tilt. This transom notch also permits the drive of the boat propulsion device to swing from side to side within the transom notch not only for steering but also for steering at trim positions within the trim range. Neither of these needs is specifically con~idered in known boats and known boat strurtures wlth raised bottom surfaces do not provide the convenience and utilities of mounting a drive at a raised bottom surface which permits ~teerlng and trim~tilt under the boat, 198~/4 The raised bottom surface also forms the top of a drive containing cavity which extends upwardly into the hull with an open end at the transom notch. The cavity includes side wall 5 which are generally vertical The port and starboard side walls are generally parallel to each other and to the chine surfaces of the boat. In driving a boat with these sidewalls it appears that their edges dig in to the water particularly on turns, which provides a solid feel during turns, resulting in a new sense of driving pleasure.
The cavity forward wall is also an unique structure with multiple utilitie5 and advantages. ~s a vertical wall it ends a portion of the boat planing surface along the middle of the boat while providing extended planing surface along the cavity which may act as a form of afterplane surface. This reduces the wetted area of the boat when on plane and accordingly provides a general increase in speed. The vertical walls as a vertical wall conveniently provides an easy-to-use surface for connecting through the boat for exhaust, cooling water, hydraulics etc.
Lastly, it is possible that the cavity vertical side walls, when slightly tapered to the rear assist steering.
In a second embodiment the boat includes a second raised bottom surface adjacent the cavity which assists in reducing the amount of wetted area during an on-plane condition with the general expected advantages from a lesser wetted area achieved.
And of course, there is a significant aesthetic utility and advantage achieved from containing the engine of the boat propulsion device above the cavity and a cavity to simply package the drive.
BRIEF DESCRIPTlON OF THE DRAWINGS
FiQure I i~ a side elevation view of a boat with a 198~/4 boat propulsion device mounted therein.
Figure 2 is an end elevation view of the boat of Figure 1.
Figure 3 is a bottom elevation view of the boat of Figure 1.
Figure 4 is a cross section view on line 4-4 of the boat of Figure 1, appearing with Figur~ 2.
Figure 5 is a bottom elevation view similar to : that of Figure 3 of a second embodiment of a boat.
Fioure ~ is a cross section view on line ~-~ of the boat of Figure 5.
Figure 7 is a cross section view on line 7-7 of the boat of Figure 5.
DESCRIPTION OF THE PREFERRED E~BODIMENT
The boat 10 with a boat propulsion device 11 mounted therein is shown in Figures 1 through 3. The boat 10 which is preferably formed of reinforced fiberglass includes a planing hull 12 and a generally vertically; upright transom 13. The hull 12 includes a bottom planing surface 14 and a pair of bottom chine surfaces 15 and 16. The hull 12 also in~ludes a raised bottom surface 17 adjacent the transom 13. The raised bottom surface 17 includes an opening or hole 18 for positioning and mounting the boat propulsion device 11.
The raised bottom surface 17 extends to the transom 13 and is of a width less than the bottom planing surface 14 of the hull 12 adjacent the transom 13 and between the bottom chine surfaces 15 and 1~. The width of the raised bottom surface 17 provides a desired steering range.
The raised bottom surface 17 forms the top lq of a drive containlng cavity 20 which extends upwardly into the hull lZ. The cavlty 20 extends through the transom 1~
havln~ an op~n end whlch 1~ a notch 21 e~tending upwardly , . . ... . .
into the transom l3.
The cavity 20 inrludes a first portside wall 22, a second starboard side wall 23 and a third forward wall 24, each of the walls connecting between the bottom planing surface 14 and the raised bottom surface 17.
The port side and starboard side walls 22 and 23 of the cavity 20 are generally parallel~ but tapering rearward at an angle of taper 25 as shown in Figure 3 of less than 10 degrees. The preferred taper 25 is in the ~0 range of 2 to 8 degrees.
The side walls 22 and 23 are also generally centered with respect to the centerline 2~ of the boat 10.
The centering of the sidewalls 22 and 23 also centers the cavity 20.
The forward wall 24 is preferably vertically upright similar to the transom 13. It is believed forming this forward wall 13 upright permits it to be positioned as far rearward as possible against the drive 11. This provides more bottom planing surface. It is also believed 20 that the upright forward wall 24 helps to prevent undesirable water flow through the cavity Z0 during on-plane operation of the boat 10.
All the walls, 22, 23, and 24 may have a slight draft of about I degree where necessary for removal of the 25 hull 12 from the boat mold.
The size of the cavity may vary with the size of the boat and the size of the boat propulsion device. For a boat of about 20 feet in length and a boat propulsion device of about 125 horsepower, the width of the cavity 20 is about 30 14 inches at the forward wall 24, the length is about 1 inches and the height i5 about 12 inches. The height varies with different boat propulsion devices 11 and is generally determined by the distance between the mounting 1 3 1 88 1 7 19~
memoer 27 and an anticavitation plate 39. The anticavitation plate 39 preferably is at water level when the boat i5 on plane.
The hole 13 in the raised bottom surface 17 or top 19 of the cavity 20 i5 shaped to match tile mounting member 27 of the boat propulsion device 11. The top 19 of thr- cavity includes a builtup fiberglass area which may include plywood reinforcement.
The cavity itself by its shape and placement provides added strength to the boat 10 as well as strength to mount the drive.
The cavity 20 is shown from the inside of the boat 10 in Figure 4 without the engine 2g of the boat propulsion device 11 mounted above the cavity 20. However an engine exhaust corrector 29 (see Figure 1) may be convenie~tly positioned ~hrough cutout 30 (Figure 4) in the forward wall 24.
~ second embodiment of a boat 31 is shown in Figure 5 through 7. In the second embodiment the same reference numbers refer to parts generally similar to the first embodiment. The second embodiment of the boat 31 includes a second raised bottom surface 32 adjacent to the cavity 20 oetween the chine surfaces 15 and 16. The cavity 33 includes a first portside side wall 34, a second starboard side wall 35, and a third forward side wall 3~.
The height of the second raised bottom surface 32 is in the range of I to 3 inches with the preferred height being about 1 inch.
The second raised bottom surface 32 extends forward from the forward side wall 36 to a forward edge portion 37 a distance in the range of 1 to 6 inches. The preferred distance i5 about 2 inches. The height of the forward edge portion 37 is about 1 to 3 inches with a preferred height ~7f about 1 inch. The second raised bottom surface 3Z also extends to the inner edges 15a and l~a of the chine surfaces 15 and 16.
Figures b and 7 show the cros6 sectional 1318817 198~/4 configuration through the planing hull 12 from forward of the cavity 33 and through the centerline 38 of the cavity 33. These Figure 6 shows the relationship previously described between the cavity 33 and the second raised bottom surface 32.
Figure 7 shows the relationship of the cavity 33 and the second raised surface 32 between the forward side wall 3~ and the forward edge prrtion 37.
While embodiments and application of the invention have been shown and described, it would be apparent to those skilled in the art that modifications are possible without departing from the inventive concepts herein. Therefore, the invention is not to be restricted other than by the scope and equivalency of the following claims.
Claims (15)
1. A planing boat comprising a bottom planing surface, a transom surface extending generally vertically upwardly from said bottom planing surface, a port side surface extending generally upwardly from said bottom planing surface and joining said transom surface, a starboard side surface extending generally upwardly from said bottom planing surface and joining said transom surface, said starboard side surface and said port side surface joining at a bow, said bottom planing surface, said port side surface, said starboard side surface and said transom forming a water floating hull, said boat including a cavity formed upwardly within said bottom planing surface adjacent said transom with said cavity having an open end notched from said transom, said cavity including a raised bottom surface raised from said bottom planing surface, said raised bottom surface having a hole therethrough whereby the hole in the raised bottom surface provides for mounting a boat propulsion device in the hull with an engine inside the hull and a steerable and trimable drive under the hull and partly contained within the cavity.
2. The boat defined in claim 1 wherein said bottom planing surface is generally horizontal and said raised bottom surface is generally horizontal.
3. A boat comprising a hull with a water planing bottom surface, a rearward transom surface extending upwardly from said water planing bottom surface and a forward bow, said boat including a cavity indented upwardly into the hull and extending from said transom towards said bow, said cavity formed as a compartment in said hull under the boat and opening to the rear of the boat through a downward notch in said transom, said cavity having a cavity top raised above said water planing bottom surface, said cavity top including opening means therein whereby said compartment is adapted to provide under-the-hull containment of a downward and rearward portion of a steerable-trimable marine drive with the downward portion including a portion extending through said top opening means from an engine means above said cavity top and the rearward portion being steerable and trimable and extending rearwardly of the boat within said notch in said transom.
4. The boat defined in claim 3 wherein said cavity top is formed as a generally horizontal second bottom surface spaced upwardly from said water planing bottom surface, said cavity top including mounting means within said top opening means whereby the engine portion of the marine drive is mounted above said cavity top and the downward portion of a marine drive extends through said cavity top to connect the engine portion above said top with said downward and rearward portions within said compartment.
5. A planing boat comprising a bottom planing surface, a transom surface extending upright from said bottom planing surface, a port side surface extending generally upwardly from said bottom planing surface and joining said transom surface, a starboard side surface extending generally upwardly from said bottom planing surface and joining said transom surface, said starboard side surface and said port side surface joining at a bow, said bottom planing surface, said port side surface, said starboard side surface and said transom forming a water floating single planing hull, said boat including a cavity formed upwardly within said bottom planing surface adjacent said transom with said cavity having an open end notched from said transom, said cavity including an apertured raised bottom surface raised from said bottom planing surface which forms an aperture top of said cavity and said boat including a second raised bottom surface positioned between said bottom planing surface and said top of said cavity, said cavity adapted to contain a steerable-trimable propulsion drive assembly operated from an engine mounted above the cavity within the hull.
6. The planing boat defined in claim 5 further includes a forward edge portion connecting said bottom surface and said second raised bottom surface.
7. The planing boat defined in claim 5 wherein said second raised bottom surface extends between said port side and said starboard side and said planing boat further includes a forward edge portion attached between said bottom surface and second raised bottom surface, said forward edge portion positioned forward of said cavity.
8. A boat having a hull with a bottom planing surface and a transom extending upwardly from the bottom planing surface, said boat further comprising a raised bottom surface adjacent the transom, said raised bottom surface providing a cavity within the hull, which cavity is open at the bottom and open rearwards through the transom but is bounded by spaced side walls, by an upwardly extending front wall extending across the cavity between said side walls and by said raised bottom surface which forms a top of the cavity, said raised bottom surface having a mounting hole located in the hull above the cavity so as to permit mounting of a boat propulsion device on said raised bottom surface with an engine above the raised bottom surface and a connected steering and trim/tilt drive in said cavity below the raised bottom surface.
9. The boat defined in claim 8 wherein the rear opening of said cavity extends notched through the transom.
10. The boat defined in claim 8 together with a boat propulsion unit mounted on said raised bottom surface with an engine above the surface and a drive unit below said surface, the drive unit projecting steering and trim/tilt movements for a propeller projecting below the boat through the open bottom of the cavity.
11. The boat defined in claim 9 together with a boat propulsion unit mounted on said raised bottom surface with an engine above the surface and a drive unit below said surface, the drive unit providing steering and trim/tilt movements for a propeller projecting below the boat through the open bottom of the cavity.
12. The boat of claim 10 or 11 in which the drive includes an anticavitation plate wherein the height of said cavity is determined by the position of an anticavitation plate relative to the boat.
13. The boat of claim 8 wherein said boat includes a second raised bottom surface adjacent said cavity.
14. The boat defined in claim 13 wherein the boat includes chine surfaces and said second raised portion is positioned between said chine surfaces.
15. The boat defined in claim 13 or claim 14 wherein said second raised bottom surface extends across said bottom surface of the boat forward of said cavity.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6245987A | 1987-06-15 | 1987-06-15 | |
| US07/062,459 | 1987-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1318817C true CA1318817C (en) | 1993-06-08 |
Family
ID=22042618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000567978A Expired - Fee Related CA1318817C (en) | 1987-06-15 | 1988-05-27 | Boat with cavity for a boat propulsion device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH0194097A (en) |
| AU (1) | AU612656B2 (en) |
| CA (1) | CA1318817C (en) |
| GB (1) | GB2208111B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3170255B2 (en) | 1999-02-05 | 2001-05-28 | 川崎重工業株式会社 | Planing boat |
| JP2010254283A (en) | 2009-03-30 | 2010-11-11 | Yamaha Motor Co Ltd | Ship |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB341437A (en) * | 1929-09-12 | 1931-01-12 | Johnson Brothers Engineering C | Boat propulsion system |
| GB368569A (en) * | 1930-05-16 | 1932-03-10 | James Willard Harvey | Improvements in and relating to marine propulsion |
| GB469329A (en) * | 1936-01-23 | 1937-07-23 | J & T Maxwell Ltd | Improvements in and relating to combined motor driving and steering units for boats |
| GB585545A (en) * | 1945-02-27 | 1947-02-11 | British Motor Boat Mfg Company | Improvements in or relating to apparatus for the propulsion of ships |
| GB854787A (en) * | 1958-01-14 | 1960-11-23 | Transp Equipment Thornycroft L | Improvements in or relating to the propulsion of marine craft |
| CH393960A (en) * | 1960-07-23 | 1965-06-15 | Reiners & Wiggermann | Drive device with swiveling and height-adjustable propeller on watercraft |
| GB1304618A (en) * | 1970-02-11 | 1973-01-24 | ||
| US3811399A (en) * | 1972-10-06 | 1974-05-21 | Kioritz Corp | Inboard motor boat |
-
1988
- 1988-05-27 CA CA000567978A patent/CA1318817C/en not_active Expired - Fee Related
- 1988-06-14 JP JP63146680A patent/JPH0194097A/en active Pending
- 1988-06-14 AU AU17665/88A patent/AU612656B2/en not_active Ceased
- 1988-06-15 GB GB8814213A patent/GB2208111B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2208111A (en) | 1989-03-01 |
| GB8814213D0 (en) | 1988-07-20 |
| GB2208111B (en) | 1991-07-17 |
| JPH0194097A (en) | 1989-04-12 |
| AU612656B2 (en) | 1991-07-18 |
| AU1766588A (en) | 1988-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4597742A (en) | Trimming arrangement for planing hulls | |
| US7185599B1 (en) | Jet drive propulsion system for a pontoon boat | |
| US7182033B1 (en) | Self-contained marine propulsion system for a pontoon boat | |
| AU2006202279B2 (en) | Boat propulsion system | |
| US5301624A (en) | Stern planes for swath vessel | |
| US4458622A (en) | Boat having a variable hull configuration | |
| AU2002211455A1 (en) | Boat propulsion system | |
| US3241511A (en) | Boat hulls, motor-propeller units and hydrofoil combinations | |
| CA1039587A (en) | Planing boat hull | |
| US5443026A (en) | Boat hull with aft planing members | |
| CA1240562A (en) | Ship hull | |
| JPH04212697A (en) | Stabilizer for ship | |
| US5833502A (en) | Boat construction | |
| CA1258005A (en) | Transom bracket water deflector for improved boat performance | |
| US4810218A (en) | Marine propulsion device | |
| EP2602180B1 (en) | Pod drive installation and hull configuration for a marine vessel | |
| CA1318817C (en) | Boat with cavity for a boat propulsion device | |
| US3289226A (en) | Pontoon boat | |
| US2791196A (en) | Outboard motor with planing surface | |
| US5918562A (en) | Boat with dual skis | |
| US11167829B2 (en) | Staggered vessel transom for attachment of multiple engines | |
| JPS6024719Y2 (en) | Auxiliary steering device | |
| RU2131822C1 (en) | Planing vessel | |
| JPH04128999U (en) | ship rudder system | |
| NZ199297A (en) | Additional trim plate for anti-cavitation plate of outboard motor or transom drive unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |