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1. (WO2019023733) BODYBOARD
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THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:-

1 . A bodyboard comprising an elongate body extending longitudinally between a nose at the front of the body and a tail at the rear and including:

an upper surface forming a deck for supporting a rider;

a lower surface for planing on water, said lower surface including a channel system comprising:

a central longitudinal entry channel disposed at a forward portion of the lower surface; and

a pair of longitudinal side channels disposed at a rear portion of the lower surface and open at a trailing edge;

wherein said entry channel joins said pair of side channels at a position between the nose and tail thereby providing a bifurcated channel system for directing water air and foam from the entry channel under the bodyboard and into the side channels.

2. The bodyboard of claim 1 wherein said entry channel extends over a front third of the length of the lower surface.

3. The bodyboard of claim 1 or 2 wherein each side channel extends between the entry channel and an open outlet at the trailing edge of the body.

4. The bodyboard of claim 1 or 2 wherein each side channel extends over mid and rear thirds of the length of the lower surface between the entry channel and an open outlet at the trailing edge of the body.

5. The bodyboard of any one of claims 1 to 4 wherein the entry channel includes an inlet adjacent a leading edge at the nose of the body.

6. The bodyboard of claim 5 wherein the inlet is relatively narrow and the entry channel widens progressively down its length.

7. The bodyboard of claim 6 wherein the side channels diverge away from a centreline CL of the body toward respective peripheral side edge.

8. The bodyboard of claim 7 wherein each side channel runs generally parallel to and closely space from said respective peripheral side edge to form a peripheral ridge over the rear third of the length of the lower surface.

9. The bodyboard of claim 8 wherein the side channels converge towards the board centreline over the rear third of the length of the lower surface.

10. The bodyboard of claim 9 wherein each side channel forms an outwardly curved path from the entry channel to the trailing edge.

1 1 . The bodyboard of any one of claims 1 to 10 wherein the channel system provides a smooth and continuous transition from the central channel into the side channels so as to minimise hydrodynamic turbulence of water following in the channel system.

12. The bodyboard of any one of claims 1 to 1 1 wherein the side channels together define a central wedge-shaped land interrupting and bifurcating the central channel as it widens into the side channel.

13. The bodyboard of any one of claims 1 to 12 wherein the entry channel and side channels are formed as shallow valleys in the lower surface.

14. The bodyboard of any one of claims 1 to 13 wherein the entry channel and side channels are provided with a channel wall having parabolic cross-section.

15. The bodyboard of claim 14 wherein the channel wall provides a continuous gradual contour from the lower surface of the body towards a channel floor.

16. The bodyboard of any one of claims 1 to 15 wherein the entry channel and side channels have a depth to width ratio of less than 0.25 and more preferably less than 0.1 when depth is measured at the deepest point.

17. The bodyboard of any one of claims 1 to 16 including a gripping surface adjacent each side rail, at a rear portion of the deck.

18. The bodyboard of claim 14 wherein the channel system divides into two side channels and one or more channels therebetween.

19. A bodyboard comprising an elongate body extending longitudinally between a nose at the front of the body and a tail at the rear and including:

an upper surface forming a deck for supporting a rider;

a lower surface for planing on water, said lower surface including a channel

system comprising:

a pair of longitudinal side channels, wherein said side channels begin at a common inlet disposed at forward portion of the board at or adjacent the nose, said side channels diverging toward the tail to open at respective channel outlets at a trail edge thereby providing a bifurcated channel system for directing water from the inlet into the side channels.