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Sailboat Specifications

Polynesian Concept

Masthead Sloop · Catamaran Twin Dbrd.

Designed by Csk/Rudy Choy · Built by W. D. Schock Corp./Csk(Usa) · First built 1970

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LOA 37.00 ft  ·  Beam 17.00 ft  ·  Displacement 5,500.00 lb  ·  Sail Area 805.00 ft²  ·  Masthead Sloop  ·  Catamaran Twin Dbrd.
About the Polynesian Concept Sailboat

Designed by the legendary Rudy Choy and built by W. D. Schock Corp. from 1970 to 1972, this pioneering catamaran represents an important chapter in multihull development. With only twelve hulls produced during its brief production run, the Polynesian Concept stands as a rare example of early fiberglass catamaran construction. The boat's impressive 37-foot length overall paired with a generous 17-foot beam creates exceptional stability and spacious accommodations, while the twin daggerboard configuration provides excellent shallow-water performance and beaching capabilities. The masthead sloop rig carries 805 square feet of sail area, delivering spirited performance with the characteristic speed potential that made Choy's designs famous among multihull enthusiasts. At 5,500 pounds displacement, this catamaran offers the perfect balance between performance and load-carrying ability for extended coastal cruising or island hopping adventures. The sail area to displacement ratio of 41.46 indicates strong light-air performance, making it well-suited for tropical sailing conditions where it can truly shine. While production numbers were limited, the Polynesian Concept's Rudy Choy pedigree and Schock construction quality make it a sought-after vessel among vintage multihull collectors and serious cruising sailors seeking proven offshore capability.

Dimensions & Specifications
LOA (Length Overall) 37.00 ft / 11.28 m
LWL (Waterline Length) 30.50 ft / 9.30 m
Beam 17.00 ft / 5.18 m
Min Draft 1.58 ft / 0.48 m
Displacement 5,500.00 lb / 2,495 kg
Sail Area (Reported) 805.00 ft² / 74.79 m²
Design & Construction
Hull Type Catamaran Twin Dbrd.
Rigging Type Masthead Sloop
Construction FG
Designer CSK/Rudy Choy
Builder W. D. Schock Corp./CSK(USA)
First Built 1970
Last Built 1972
Number Built 12
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Engine & Accommodations
KSP 1.06
Frequently Asked Questions

What is the Polynesian Concept's sail area to displacement ratio?

The Polynesian Concept has a Sail Area to Displacement ratio (SA/D) of 41.46. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Polynesian Concept's comfort ratio?

The Polynesian Concept has a Ted Brewer Comfort Ratio of 5.97. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Polynesian Concept safe for offshore sailing?

The Polynesian Concept has a Capsize Screening Formula value of 3.86. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Polynesian Concept?

The theoretical hull speed of the Polynesian Concept is 7.4 kn knots, calculated from its waterline length.

How much does a Polynesian Concept weigh?

The Polynesian Concept has a displacement of 5,500.00 lb and a length overall (LOA) of 37.00 ft.

Who designed the Polynesian Concept?

The Polynesian Concept was designed by Csk/Rudy Choy, first built in 1970.