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Sailboat Specifications

San Juan 30

Masthead Sloop · Fin W/Spade Rudder

Designed by Bruce Kirby · Built by Clark Boat Co. · First built 1975

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LOA 29.86 ft  ·  Beam 10.05 ft  ·  Displacement 7,200.00 lb  ·  Sail Area 402.00 ft²  ·  Masthead Sloop  ·  Fin W/Spade Rudder
About the San Juan 30 Sailboat

Designed as an accessible and capable daysailer and coastal cruiser, the San Juan 30 earned a loyal following among sailors looking for an affordable entry into keelboat sailing without sacrificing performance. Built by Clark Boat Company in the Pacific Northwest, the San Juan line developed a strong reputation throughout the 1970s and 1980s for producing well-mannered, responsive boats that were approachable for newer sailors yet satisfying enough for more experienced hands. The San Juan 30 sits comfortably in the tradition of family-oriented performance cruisers, balancing lively sailing characteristics with practical accommodations below deck. Its hull design favors responsive handling in a variety of conditions, making it a natural fit for protected bay sailing, inland lakes, and coastal passages where manageable size and predictable behavior are valued. While detailed specifications can be limited, the boat's enduring presence in used boat markets speaks to its durability and the strength of its owner community. For buyers seeking an entry-level keelboat with genuine sailing character and a proven track record, the San Juan 30 remains a compelling and worthwhile option to research.

Market Price Estimate Beta
Small sample size. This estimate is based on fewer than 5 listings and may not be representative of the true market. Use with caution.
$1,500 – $1,500
typical asking price
Median $1,500  ·  1 listing used
All listings
$1,500 – $1,500 1
About this estimate ▾
Dimensions & Specifications
LOA (Length Overall) 29.86 ft / 9.10 m
LWL (Waterline Length) 23.67 ft / 7.21 m
Beam 10.05 ft / 3.06 m
Max Draft 5.33 ft / 1.62 m
Displacement 7,200.00 lb / 3,266 kg
Ballast 3,550.00 lb / 1,610 kg
Sail Area (Reported) 402.00 ft² / 37.35 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Bruce Kirby
Builder Clark Boat Co.
First Built 1975
Related Sailboats J30 · Catalina 30 Mkii · S2 91 · Seidelmann 30 · Coronado 30
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Frequently Asked Questions

What is the San Juan 30's sail area to displacement ratio?

The San Juan 30 has a Sail Area to Displacement ratio (SA/D) of 17.3. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the San Juan 30's comfort ratio?

The San Juan 30 has a Ted Brewer Comfort Ratio of 20.16. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the San Juan 30 safe for offshore sailing?

The San Juan 30 has a Capsize Screening Formula value of 2.09. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the San Juan 30?

The theoretical hull speed of the San Juan 30 is 6.52 knots, calculated from its waterline length.

How much does a San Juan 30 weigh?

The San Juan 30 has a displacement of 7,200.00 lb and a length overall (LOA) of 29.86 ft.

How much does a used San Juan 30 cost?

Based on 1 recent market listings, used San Juan 30 sailboats typically sell for between $1,500 and $1,500, with a median asking price of $1,500. Price varies significantly based on year, condition, location, and included equipment.

Who designed the San Juan 30?

The San Juan 30 was designed by Bruce Kirby, first built in 1975.