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3,163data points analyzed by Sailpages.com to compile this CAL 40 buyer’s report
CAL 40

CAL 40

Jensen Marine🇺🇸· Design: C. William Lapworth
$68,000 avg$68,000 – $68,000 (3 listings)1963–1971108 built
$2.7K – $7.3K est. annual maintenance
Offshore CruisermonoMasthead SloopFin
Cal 40 Forum Cal 40 Site

Specifications

Hull

LOA39.33 ft
LWL30.33 ft
Beam11 ft
Draft5.58 ft
Displacement15,000 lb
Ballast6,000 lb
Hull speed1.34·√LWL7.4 kn

Rig & Sails

Iforetriangle height46 ft
Jforetriangle base15.2 ft
Pmainsail luff40 ft
Emainsail foot17.5 ft
FLforestay15.2 ft
Mainsail727.6 sq ft
Jib (100%)349.6 sq ft
Spinnaker594.3 sq ft

Engine

CommonlyWesterbeke, Atomic 4, Perkins, Volvo Penta, Universal

About the CAL 40

The rig dimensions above are from the 1963 sail plan drawing. Current class rules (2005) allow a max of: I - 46.7' J - 15.3' P - 40.1' E - 17.55' The accolades for this particular boat are many. Certainly one of the most influential designs and successful racing boats ever. With 160 built, it was also a commercial success for Jensen Marine. Less mention is made of the man, George Griffith, who actually commissioned the design, and agreed to back the construction of the first ten boats. This added note from Robert VanderPol II: "There is a single example of a raised deck Cal 40 similar to the Cal 25 & 28. Jensen Marine was promised a number of orders. All but one backed out at the last minute and only one was built and delivered."

Sailpages Buyer's Take

Designed by C. William Lapworth and built by Jensen Marine (USA) from 1963–1971, the CAL 40 is a classic heavy-displacement cruiser with 108 hulls produced. Its substantial 15000.0 lb displacement and 6000.0 lb ballast provide a stable, comfortable platform, though owners report significant structural maintenance needs typical of this era.

Best for:
This boat suits experienced coastal cruisers and bluewater adventurers who prioritize seakeeping and comfort over speed, and who are prepared for extensive DIY maintenance and structural repairs.
Bluewater capability:
With a D/L ratio of 240.01 and a Capsize ratio of 1.79, the CAL 40 is well-suited for offshore passage making, provided critical structural issues like deck core rot and rudder integrity are addressed.
Comparables:
Comparable to the Cal 3-36 and Cal 3-40 due to shared design lineage and heavy-displacement cruising philosophy, as well as the Tartan 38 and O'Day 38 for similar era, size, and coastal cruising roles.

Performance

Comfort28.8
Capsize1.79
SA/Disp18.5
Disp/Len240
Bal/Disp40.0

ORC Performance Data(5 certificates)

Measured performance data from ORC (Offshore Racing Congress) certificates.

Polar Diagram

2468100°30°60°90°120°150°180°WIND
4kn6kn8kn10kn12kn14kn16kn20kn24knbeat VMGrun VMG

Boat speed (kn) vs. true wind angle. Source: ORC

Racing Ratings

GPH651.2 s/miOSN631.0

Triple Number

LowMedHighOffshore0.81151.04901.1706Inshore0.63150.85640.9839

ORC Measured

Displacement7003 kg (15441 lb)Wetted surface31.1 m² (335 ft²)Stability index125.4

Sail Areas (ORC)

Main41.1 m² (443 ft²)Genoa46.6 m² (502 ft²)Spinnaker100.4 m² (1081 ft²)Asymmetric51.8 m² (557 ft²)

Speed Table (kn)

TWA \ TWS468101214162024
52°3.74.95.86.56.87.07.17.27.2
60°3.95.26.16.77.07.27.37.47.4
75°4.15.46.36.87.27.47.67.77.8
90°4.05.56.57.07.27.57.78.08.3
110°4.25.66.77.27.67.88.08.38.5
120°4.05.56.67.27.67.98.28.79.0
135°3.65.06.16.97.47.88.29.010.1
150°3.04.35.46.37.07.47.88.69.6
Beat VMG2.33.23.94.44.74.84.95.05.0
Run VMG2.63.74.75.56.26.87.27.98.6

Images

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C40 Illusion 2001 SF Lightship Race 1st in class all girl crew
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Cal40 IllusionFinishing 2003 Transpac
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Illusion 1993 Doublehanded Farallones Race 1st in class passing under Golden Gate Bridge
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Estimated Value

Low Confidence
Based on 3 listings
Low
$52,836
Estimated Value
$52,836
High
$52,836
Inflation-adjusted to 2026 USD

Estimated Cost of Ownership

Based on 39.33ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$2.7K – $7.3K
Hull, rigging, sails, engine service
Annual Docking
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Articles & Reviews

Known Issues & Pre-Purchase Inspection

25 reported issues across 10 systems for the CAL 40, compiled from owner reports in sailing forums and owner-association material.

6 critical12 major7 minor
Engine5Structural4Keel3Rigging3Deck3Rudder2Hull2Interior1Electrical1Plumbing1

Unlock the full inspection report

Thinking of buying a CAL 40? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.

  • All 25 specific issues — severity, symptoms & fixes
  • Model-specific pre-purchase inspection checklist
  • Downloadable PDF to take to your surveyor — yours to keep

One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep

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Which engine powers your CAL 40?

We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.

Brands sometimes mentioned for this model: Westerbeke, Atomic 4, Perkins, Volvo Penta — is it one of these?

Already know your engine? Search all engines → to find its exact parts.

Used sails that fit the CAL 40

Checking eBay for sails sized to this boat's rig…