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Sailboat Specifications

Sj 30 Oyster

Fractional Sloop · Fin W/Spade Rudder

Designed by Stephen Jones · Built by Oyster Marine (Uk)/Verlvale Ltd · First built 1979

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LOA 30.42 ft  ·  Beam 10.75 ft  ·  Displacement 6,500.00 lb  ·  Sail Area 410.00 ft²  ·  Fractional Sloop  ·  Fin W/Spade Rudder
About the Sj 30 Oyster Sailboat

A compact Swedish cruiser-racer with a loyal following in Scandinavian waters, the Sj 30 Oyster is a capable and versatile sailboat well suited to coastal cruising and inshore racing. Built with the practical demands of Baltic sailing in mind, this design reflects the Swedish tradition of producing sturdy, seaworthy boats that balance performance with comfort in a manageable package. Although detailed specifications are limited, the Sj 30 Oyster carries the reputation of a well-rounded day sailor and weekend cruiser that appeals to both families and performance-minded sailors. Its size makes it approachable for a small crew or experienced solo sailor, while still offering enough interior space for short offshore passages and overnight stays. Buyers researching this model often appreciate its straightforward handling characteristics and durable construction, qualities that have helped it maintain a presence in the used boat market. For sailors seeking an affordable entry point into keelboat ownership with Scandinavian build quality and the flexibility to race competitively or cruise comfortably, the Sj 30 Oyster deserves a close look.

Dimensions & Specifications
LOA (Length Overall) 30.42 ft / 9.27 m
LWL (Waterline Length) 25.00 ft / 7.62 m
Beam 10.75 ft / 3.28 m
Max Draft 5.33 ft / 1.62 m
Displacement 6,500.00 lb / 2,948 kg
Ballast 2,663.00 lb / 1,208 kg
Sail Area (Reported) 410.00 ft² / 38.09 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer Stephen Jones
Builder Oyster Marine (UK)/Verlvale Ltd
First Built 1979
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Frequently Asked Questions

What is the Sj 30 Oyster's sail area to displacement ratio?

The Sj 30 Oyster has a Sail Area to Displacement ratio (SA/D) of 18.89. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Sj 30 Oyster's comfort ratio?

The Sj 30 Oyster has a Ted Brewer Comfort Ratio of 15.96. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Sj 30 Oyster safe for offshore sailing?

The Sj 30 Oyster has a Capsize Screening Formula value of 2.31. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Sj 30 Oyster?

The theoretical hull speed of the Sj 30 Oyster is 6.7 knots, calculated from its waterline length.

How much does a Sj 30 Oyster weigh?

The Sj 30 Oyster has a displacement of 6,500.00 lb and a length overall (LOA) of 30.42 ft.

Who designed the Sj 30 Oyster?

The Sj 30 Oyster was designed by Stephen Jones, first built in 1979.