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Sailboat Specifications

Shark Catamaran

Frac. Sloop (Rotating Spar) · Catamaran Twin Cbrd.

Designed by Dick Gibbs/J.r. Macalpine-Downie · Built by Gibbs Boat Co./Alleman Enterprises · First built 1963

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LOA 20.00 ft  ·  Beam 10.00 ft  ·  Displacement 300.00 lb  ·  Sail Area 235.00 ft²  ·  Frac. Sloop (Rotating Spar)  ·  Catamaran Twin Cbrd.
About the Shark Catamaran Sailboat

Designed for fun and accessible sailing on sheltered and coastal waters, the Shark Catamaran is a spirited multihull that appeals to sailors looking for an exciting on-the-water experience without the complexity of larger offshore cruising cats. Its catamaran configuration delivers the hallmark benefits of twin-hull design — enhanced stability, reduced heeling, and lively performance in a breeze — making it a popular choice for recreational day sailing and casual racing. Though detailed specifications are limited, the Shark Catamaran's design philosophy appears centered on approachability and enjoyment, making it well-suited for sailors of varying experience levels. The twin-hull platform provides a stable, spacious deck area ideal for families or small groups, while still offering enough performance to keep things interesting for more seasoned helm hands. The boat's manageable size and catamaran versatility make it a practical option for those exploring the multihull world for the first time, or for experienced sailors seeking a straightforward, low-maintenance platform for weekend sailing. Its character leans toward relaxed coastal adventure rather than bluewater passage-making, earning it a loyal following among day sailors who prioritize fun and ease of handling.

Dimensions & Specifications
LOA (Length Overall) 20.00 ft / 6.10 m
LWL (Waterline Length) 17.00 ft / 5.18 m
Beam 10.00 ft / 3.05 m
Max Draft 2.50 ft / 0.76 m
Min Draft 0.42 ft / 0.13 m
Displacement 300.00 lb / 136 kg
Sail Area (Reported) 235.00 ft² / 21.83 m²
Design & Construction
Hull Type Catamaran Twin Cbrd.
Rigging Type Frac. Sloop (Rotating Spar)
Construction Wood/FG
Designer Dick Gibbs/J.R. MacAlpine-Downie
Builder Gibbs Boat Co./Alleman Enterprises
First Built 1963
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Frequently Asked Questions

What is the Shark Catamaran's sail area to displacement ratio?

The Shark Catamaran has a Sail Area to Displacement ratio (SA/D) of 83.99. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

How much does a Shark Catamaran weigh?

The Shark Catamaran has a displacement of 300.00 lb and a length overall (LOA) of 20.00 ft.

Who designed the Shark Catamaran?

The Shark Catamaran was designed by Dick Gibbs/J.r. Macalpine-Downie, first built in 1963.