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Sailboat Specifications

Cal 46 Iii 1975

Masthead Ketch · Fin W/Spade Rudder

Designed by C. William Lapworth · Built by Jensen Marine · First built 1975

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LOA 45.50 ft  ·  Beam 12.50 ft  ·  Displacement 30,000.00 lb  ·  Sail Area 855.00 ft²  ·  Masthead Ketch  ·  Fin W/Spade Rudder
About the Cal 46 Iii 1975 Sailboat

California's Cal Yachts produced the Cal 46 III during the mid-1970s as part of their renowned series of performance-oriented sailboats that helped define the era's racing and cruising scene. This 46-foot yacht represents the third iteration of Cal's popular 46-foot design, incorporating refinements learned from earlier versions while maintaining the builder's signature emphasis on speed and seaworthiness. Built during Cal Yachts' golden period, the Cal 46 III embodies the company's philosophy of creating boats that could excel both on the racecourse and during extended cruising adventures. The design reflects the evolving preferences of 1970s sailors who demanded vessels capable of competitive racing while offering comfortable accommodations for coastal and offshore passages. Like other Cal designs from this period, the 46 III likely features a moderate to aggressive underbody configuration optimized for performance, paired with practical deck layouts that facilitate both racing crews and cruising couples. The boat's reputation benefits from Cal Yachts' strong track record during this era, when the builder was producing some of the most respected fiberglass sailboats in America. For prospective buyers, this represents an opportunity to own a piece of sailing heritage from one of California's most influential yacht builders.

Dimensions & Specifications
LOA (Length Overall) 45.50 ft / 13.87 m
LWL (Waterline Length) 37.50 ft / 11.43 m
Beam 12.50 ft / 3.81 m
Max Draft 5.00 ft / 1.52 m
Displacement 30,000.00 lb / 13,608 kg
Ballast 8,000.00 lb / 3,629 kg
Sail Area (Reported) 855.00 ft² / 79.43 m²
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Ketch
Construction FG
Designer C. William Lapworth
Builder Jensen Marine
First Built 1975
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Frequently Asked Questions

What is the Cal 46 Iii 1975's sail area to displacement ratio?

The Cal 46 Iii 1975 has a Sail Area to Displacement ratio (SA/D) of 14.23. Values between 14–18 are typical cruising sailboats; 18–22 is cruiser/racer; over 22 is performance racing.

What is the Cal 46 Iii 1975's comfort ratio?

The Cal 46 Iii 1975 has a Ted Brewer Comfort Ratio of 40.21. A ratio over 30 indicates good offshore comfort; over 40 is very comfortable offshore.

Is the Cal 46 Iii 1975 safe for offshore sailing?

The Cal 46 Iii 1975 has a Capsize Screening Formula value of 1.61. Values under 2.0 are considered acceptable for offshore sailing; under 1.8 is ideal.

What is the hull speed of the Cal 46 Iii 1975?

The theoretical hull speed of the Cal 46 Iii 1975 is 8.21 knots, calculated from its waterline length.

How much does a Cal 46 Iii 1975 weigh?

The Cal 46 Iii 1975 has a displacement of 30,000.00 lb and a length overall (LOA) of 45.50 ft.

Who designed the Cal 46 Iii 1975?

The Cal 46 Iii 1975 was designed by C. William Lapworth, first built in 1975.