Claims
- 1. A boat having a variable hull configuration comprising:
- a round bilge hull with hull portions approximately amidship that are comparatively flat and comparatively horizontal, aft from which the hull narrows, steepens and sweeps to the water line; and
- a pair of displaceable surfaces convexly curved to conform to the hull shape located in the aft hull portion, the surfaces being moveable between extended and retracted positions about hinge lines extending from points adjacent the stern near the center line outwards and forwards to points near the water line, said hull having a first configuration in which the surfaces are in their retracted positions so that the hull forms a displacement hull, and a second configuration in which the surfaces are in their extended positions and cooperate with the comparatively flat and comparatively horizontal amidships portions to form planing surfaces for the hull.
- 2. A boat according to claim 1 characterised in that the displaceable surfaces are in the form of solid wedges having one surface which follows the basic hull shape.
- 3. A boat according to claim 2 characterised in that the hull is provided with cavities to accommodate the wedges when retracted.
- 4. A boat according to one of claims 1 to 3 characterised in that a flooded compartment is provided having an openable bottom formed in the hull surface ahead of the stern of the vessel for a drive unit which when not in use, can be drawn upwards into the flooded compartment, the forward wall of which is formed as a bulkhead through which a transom drive unit operates, the bulkhead being at least one of being forward of and forming the front wall of the cockpit.
Priority Claims (2)
Number |
Date |
Country |
Kind |
7934552 |
Oct 1979 |
GBX |
|
8113956 |
May 1981 |
GBX |
|
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 194,366, filed Oct. 6, 1980, now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (5)
Number |
Date |
Country |
2833095 |
Feb 1980 |
DEX |
43143 |
Oct 1970 |
FIX |
1465680 |
Jan 1967 |
FRX |
1574683 |
Jul 1969 |
FRX |
7317684 |
Jul 1975 |
NLX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
194366 |
Oct 1980 |
|