Dolphin surfboard fin, sailboard fin

Abstract

The lateral wing sits on top of the vertical section of the fin. This enables the lateral wing to work separately in function and also together with the vertical section of the fin when the Dolphin fin is being moved through the water in different angles and directions. This revolving aspect allows for greater holding power on sections of the wave and acceleration and turning power. Of course the fin on leaving the water acts aerodynamically guiding and giving lift to the surfboard going through the air, allowing the board to be manoeuvrable and directional in the air.

1 . I claim the lateral wing fin placed on top of the vertical fin acts separately to drive and accelerate the surfboard along the water as a dolphin: 
 That the lateral fin acts together with the vertical fin to give the surfboard better turning ability and holding ability in sections of the wave.    That the lateral wing acts aerodynamically to give lift and direction to the surfboard while it is air borne.