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Cal 3 30
Designer: William Lapworth  ·  Builder: Jensen Marine (Usa)  ·  First built: 1973
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About the Cal 3 30

With its roots in California's competitive sailing scene, this 30-foot sailboat emerged from Cal Yachts during an era when the builder was known for producing performance-oriented designs that didn't sacrifice comfort for speed. The Cal 3 30 represents the evolution of the yard's design philosophy, balancing the racing heritage that made Cal famous with the growing demand for versatile cruising capabilities. Built for sailors who appreciate responsive handling and solid construction, this boat excels in coastal cruising and club racing environments. The design incorporates the clean lines and efficient hull form that became signatures of Cal's approach to sailboat design. Her moderate displacement and well-proportioned sail plan deliver spirited performance in a variety of conditions while maintaining predictable handling characteristics. The boat's layout prioritizes both sailing efficiency and onboard comfort, making it equally suitable for weekend coastal adventures and longer passages. Like many Cal designs from this period, the 3 30 has developed a loyal following among sailors who value boats that perform well under sail while offering practical accommodations. This reputation for durability and sailing ability has helped maintain strong resale values in the used boat market.

Core Dimensions
LOA (Length Overall) 30.07 ft / 9.17 m
LWL (Waterline Length) 26.31 ft / 8.02 m
Beam 10.17 ft / 3.10 m
Max Draft 5.50 ft / 1.68 m
Displacement 10,500.00 lb / 4,763 kg
Ballast 5,000.00 lb / 2,268 kg
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer William Lapworth
Builder Jensen Marine (USA)
First Built 1973
Last Built 1974
Number Built 135
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Performance Ratios
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
47.62
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
257.38
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 5.73 pounds/inch
Rig Dimensions
I (Foretriangle Height) 15.87
J (Foretriangle Base) 13.50 ft / 4.11 m
P (Mainsail Luff) 474.00 ft² / 44.04 m²
E (Mainsail Foot) Universal
Engine & Accommodations
Fuel Capacity 20 gals / 76 L
Water Capacity 20 gals / 76 L
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