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Cal 2 30
Designer: C. William Lapworth  ·  Builder: Jensen Marine (Usa)  ·  First built: 1968
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About the Cal 2 30

Designed by renowned naval architect C. William Lapworth, this classic California cruiser-racer represents the golden era of West Coast sailboat design from the late 1960s. Built by Jensen Marine between 1968 and 1972, with 204 hulls produced, the Cal 2 30 earned a solid reputation among sailors seeking an affordable yet capable coastal cruiser. The boat's fractional sloop rig and fin keel with spade rudder configuration delivers responsive handling and decent windward performance, making it well-suited for both weekend cruising and club racing. At 30.20 feet overall with a 25-foot waterline, she offers a practical size for coastal exploration while remaining manageable for smaller crews. The moderate displacement of 10,300 pounds, combined with 4,500 pounds of ballast, provides stability without sacrificing sailing performance. With a comfort ratio of 32.1 and capsize screening formula of 1.66, this design leans toward the sportier end of the cruising spectrum, prioritizing sailing ability over interior volume. The SA/Displacement ratio of 15.74 indicates good light-air performance, while the hull speed of 6.70 knots reflects reasonable passage-making capability. Today, well-maintained examples remain popular among sailors seeking classic design aesthetics with proven seaworthiness for coastal adventures.

Core Dimensions
LOA (Length Overall) 30.20 ft / 9.20 m
LWL (Waterline Length) 25.00 ft / 7.62 m
Beam 9.00 ft / 2.74 m
Max Draft 5.00 ft / 1.52 m
Displacement 10,300.00 lb / 4,672 kg
Ballast 4,500.00 lb / 2,041 kg
Sail Area (Reported) 464.00 ft² / 43.11 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Fractional Sloop
Construction FG
Designer C. William Lapworth
Builder Jensen Marine (USA)
First Built 1968
Last Built 1972
Number Built 204
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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
 15.74
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
 43.69
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
 294.29
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
 32.1
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
 1.66
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 6.70 kn
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
 1.69
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. 803.95 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 15.75
Rig Dimensions
I (Foretriangle Height) 37.00 ft / 11.28 m
J (Foretriangle Base) 12.33 ft / 3.76 m
P (Mainsail Luff) 35.00 ft / 10.67 m
E (Mainsail Foot) 13.50 ft / 4.11 m
SA Fore 228.11 ft² / 21.19 m²
SA Main 236.25 ft² / 21.95 m²
SA Total (100%) 464.36 ft² / 43.14 m²
Est. Forestay Length 39.00 ft / 11.89 m
Engine & Accommodations
Engine Make Universal
Engine Model Atomic 4
Engine Type Gas
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