This fin is designed to propel watercraft with forward thrust, increasing manoeuvrability, allowing you to make tighter turns, accelerating drive and speed with more control. 

The inspiration of the fin has been created from the thrust and projection generated from fish swimming downstream in pursuit mode. The fin has increased tip area and a swallowtail, similar to the fastest fish in the ocean which creates a vortex. 

Vortices carry the momentum to move fish forward in water, each stroke of a fish tail creates a vortex ring which fuses with those of prior strokes to form a linked zigzag chain. Circular flow around the vortex filament shoots fluid backwards through the centre of the ring propelling the fish in the opposite direction.