Cal 40 Information, Review, Specs

Boat drawing
Make
CAL
Model
40
Number Built
108
Production Year(s)
1963 - 1971

The Cal 40 stands as a truly iconic sailboat, celebrated for its revolutionary design that blended offshore racing prowess with surprisingly comfortable cruising capabilities. Conceived as a groundbreaking vessel, it quickly earned a legendary reputation as a highly competitive production yacht, particularly dominant in ocean races. Designed by the esteemed naval architect C. William "Bill" Lapworth and built by Jack Jensen's Jensen Marine in Southern California, the Cal 40 became one of the most influential sailboat designs of its era.

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The genesis of the Cal 40 dates back to 1963, born from a collaboration between designer Bill Lapworth, Jack Jensen of Jensen Marine, and California sailor George Griffith, who initially commissioned the design and backed the construction of the first ten boats. Jensen Marine, known for its commitment to innovative design and robust fiberglass construction, was the ideal builder for such a ambitious project. The company, which began with the Lapworth 24 (later the Cal 24), established a strong partnership with Lapworth, whose designs became fundamental to the Cal brand's identity.

Lapworth's philosophy for the Cal 40 was truly revolutionary. Breaking from the prevalent designs of the time, he incorporated a shallow hull, a fin keel, and a spade rudder – features that were considered radical for an offshore racer in the 1960s. This innovative combination significantly influenced subsequent ocean racing yacht designs. The Cal 40 quickly gained fame as a "downwind surfing machine," a testament to its performance-oriented design. Production of the Cal 40 continued until 1971, with 108 units built, solidifying its commercial success for Jensen Marine. There was a single instance of a raised deck Cal 40, similar to the Cal 25 and 28, but only one such vessel was ever constructed and delivered.

Sailing Performance and Handling

The Cal 40's design ratios provide insight into its impressive sailing characteristics. With a calculated Sail Area to Displacement (SA/D) ratio of approximately 18.39, the Cal 40 exhibits excellent performance in lighter winds, allowing it to move efficiently even in marginal conditions. Its Ballast to Displacement ratio of 0.40 (40%) indicates a stiff and stable boat, capable of standing up to significant wind and maintaining a comfortable motion in a seaway. While its Displacement to Length (D/L) ratio, calculated at around 537, suggests a relatively heavy displacement for its waterline length, for its time, the Cal 40 was considered a relatively fast boat.

In terms of handling, the Cal 40 is consistently praised for being well-balanced and remarkably easy to steer, even with its long tiller. Its low cabin trunk allows for excellent forward visibility, complemented by wide side decks and a spacious foredeck that facilitates headsail handling. Owners and reviewers often describe the boat as tracking well and being very dry. Its offshore capabilities are well-documented, with the Cal 40 maintaining its competitiveness in ocean sailing even decades after its introduction.

Accommodations and Layout

The interior of the Cal 40, while functional and well-designed, reflects its era and its primary emphasis on racing. The layout is traditional, featuring a V-berth forward, which serves as the primary sleeping area. A head compartment and additional stowage space are typically located between the V-berth and the main saloon. The saloon itself commonly features two settees, often with a large dining table that can accommodate several people, making it suitable for both cruising and gathering. While some older reviews suggest sleeping accommodations for up to eight, the practical comfort levels for a sustained cruise would be for fewer individuals. The finish quality, though durable and solid, leans more towards practicality than modern luxury, with a notable presence of wood trim contributing to a classic marine aesthetic.

Owner's Perspectives

Owners of Cal 40s consistently highlight the boat's solid construction and its ability to withstand challenging offshore conditions, a testament to Jensen Marine's robust building practices. The enduring popularity of the model has fostered a dedicated and active community of Cal 40 owners, who frequently share knowledge and support for maintaining these classic vessels. Many owners praise the Cal 40 for its versatility, finding it equally adept at competitive racing and comfortable long-distance cruising, often citing its excellent value.

However, as with any aging vessel, common issues have been noted. Some owners have reported minor leaks along the hull-deck joint, a common area for attention on older fiberglass boats. A more significant recurring concern involves the rudder, with some boats experiencing rudder failures due to age, necessitating rebuilding or replacement if not already addressed. Additionally, issues with certain bulkheads have been mentioned by owners in online forums. Despite these potential maintenance points, a well-maintained Cal 40 remains a highly regarded and enjoyable sailboat.

Measurements

Construction & Hull

Construction Material
Fiberglass (Solid)
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Spade
Ballast
6000 lbs (Lead)
Displacement
15000 lbs
Water Capacity
-
Fuel Capacity
-

Engine

Engine Make
Perkins
Engine Model
4108
Engine Type
Engine HP
50
Engine Count
1
Drive Type
Fuel Type
Diesel
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
40 ft
E (Main Foot)
17.5 ft
I (Foretriangle Height)
46 ft
J (Foretriangle Base)
15.17 ft
Forestay Length (est)
48.44 ft
Main Sail Area
350 sqft
Foretriangle Sail Area
348.91 sqft
Total Sail Area (Reported)
700 sqft
Total Sail Area (Calc)
698.91 sqft

Dimensions

LOA
39.33 ft
LWL
30.33 ft
Beam
11 ft
Draft
5.58 ft
Max Headroom
-
Air Draft
-

Calculations

Hull Speed
7.38 kn
Pounds per Inch Immersion
1