It's the Kelvinator in disguise.
Combining the speed of the Kelvinator with the drive of the Keel Fish.
The concave tail gives it the Kelvinator's speed, but the narrower outline lets it go rail to rail easier while keeping the drive from the straight rail line through the tail.
The rolled bow nose keeps it free up the front.
5'4 x 21 5/8 x 2 5/16 = 31 litres
Quad fin set up ( fcs2)