BoatsHappy Cat Star

Happy Cat Star

Catamaran Single Cntrboard · Fractional Sloop · First built 2025

A lightweight fractional sloop catamaran featuring a single centerboard and a high sail-area-to-displacement ratio

Designed by Internal Development Team, built by Grabner GmbH.

LOA
Beam
Draft (max)
Displacement
Hull type
Catamaran Single Cntrboard

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
66.4
Hull
Hull type
Catamaran Single Cntrboard
Construction
EPDM/Natural rubber
Production
Years built
First built 2025
Designer
Internal development team
Builder
Grabner GmbH, Austria

Boats like this, on the water

Nobody has filmed this one — but these are close.

Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.

Hobie 144.27 mSame hull family0.5 m shorterThe original Hobie Cat, this lightweight beach catamaran features a rotating spar and a high power-to-weight ratio
Supercat 154.65 mSame hull familyNear-identical lengthA high-performance beach catamaran with a rotating spar and an exceptional sail-area-to-displacement ratio
Hobie 165.05 mSame hull family0.3 m longerThe most popular sailing catamaran ever built, featuring a rotating spar and boardless hull for high-speed beach sailing
Hobie FX One5.18 mSame hull family0.4 m longerA 5.18-meter single-handed catamaran featuring a rotating fractional rig and an exceptional 56.56 sail area-to-displacement ratio
Hobie Tiger 185.51 mSame hull family0.7 m longerDesigned to the Formula 18 rule, this 5.5-meter catamaran features twin daggerboards and a high power-to-weight ratio

The family

Related models

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