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Sailboat Specifications

Solo

Cat (Marconi) · Centerboard Dinghy

Designed by Jack Holt · Built by Butler Boats · First built 1956

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LOA 12.42 ft  ·  Beam 5.25 ft  ·  Displacement 150.00 lb  ·  Sail Area 90.00 ft²  ·  Cat (Marconi)  ·  Centerboard Dinghy
About the Solo Sailboat

Designed as a single-handed dinghy, the Solo has earned a devoted following among sailors who value close competition, technical skill, and the pure challenge of racing alone. Originally designed by Jack Holt and introduced in the mid-20th century, it has become one of the most popular and enduring one-design classes in the United Kingdom, with a thriving racing circuit that continues to attract competitive sailors of all ages. The Solo's appeal lies in its demanding yet rewarding nature. Sailed without a spinnaker, the class places a premium on boat handling, upwind technique, and tactical awareness rather than raw speed or crew coordination. This makes it an excellent choice for sailors looking to sharpen their racing instincts in a highly competitive one-design environment. The active class association ensures strong fleets at club and national level, meaning racing is rarely short of close battles. For those considering their first serious foray into single-handed racing, or experienced sailors seeking a deeply competitive and well-supported class, the Solo represents a compelling and time-tested option.

Dimensions & Specifications
LOA (Length Overall) 12.42 ft / 3.79 m
Beam 5.25 ft / 1.60 m
Max Draft 3.42 ft / 1.04 m
Min Draft 0.40 ft / 0.12 m
Displacement 150.00 lb / 68 kg
Sail Area (Reported) 90.00 ft² / 8.36 m²
Design & Construction
Hull Type Centerboard Dinghy
Rigging Type Cat (Marconi)
Construction Wood/FG
Designer Jack Holt
Builder Butler Boats
First Built 1956
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Frequently Asked Questions

What is the Solo's sail area to displacement ratio?

The Solo has a Sail Area to Displacement ratio (SA/D) of 51.04. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

Is the Solo safe for offshore sailing?

The Solo has a Capsize Screening Formula value of 3.95. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

How much does a Solo weigh?

The Solo has a displacement of 150.00 lb and a length overall (LOA) of 12.42 ft.

Who designed the Solo?

The Solo was designed by Jack Holt, first built in 1956.