The Butterknife

The Butterknife

The Butterknife

The Butterknife series blend planing hull features with modern designs. They are fast, fun and versatile. Average width is 20”. Available as a dual fin, tri, quad, or asymmetric. Glass on marine plywood fins or fin system. EPS/epoxy.

Shaped exclusively for Hydrodynamica by Hank Warner and Larry Mabile.

Designed by the Hydrodynamica test pilot crew.

Order Board
The Butterknife The Butterknife The Butterknife The Butterknife
The Mini-Simmons

Planing Hull Dual Keel

The Mini-Simmons

The Mini-Simmons has brought Simmons to life for an entire generation of surfers more than five decades after his death.

The Simster

Planing Hull Tri Fin

The Simster

The Simster was inspired by Simmons’ attempt to build Bev Morgan a short, tri-finned planing hull nearly sixty years ago.

The Fourke

Planing Hull Quad

The Fourke

The Fourke features a quad keel set up with single foil Gephart front keels backed with basey double foil trailing fins.

The Ekstrom

Planing Hull Asymmetric

The Ekstrom

Carl Ekstrom innovated the asymmetric surfboard in the mid Sixties. Asymmetry helps loosen the heel side rail of a planing.