Cal 39 Information, Review, Specs

Sailing Performance & Handling

The Cal 39 is widely regarded for its stiffness and "big boat" feel, a direct result of Lapworth’s commitment to a high ballast-to-displacement ratio, which typically hovers around 40%. With a displacement-to-length (D/L) ratio that places it firmly in the "medium displacement" category, it avoids the pounding common in lighter modern hulls while maintaining enough momentum to punch through a heavy chop. According to an editorial review in Cruising World, the boat is noted for its ability to track exceptionally well, a trait often attributed to the deep fin keel and a well-balanced spade rudder.

Under sail, the Cal 39 features a sail area-to-displacement (SA/D) ratio of approximately 17.1, indicating a vessel that is lively in light air but requires reefing when the breeze exceeds 18-20 knots. Owners frequently report that the boat finds its "groove" quickly and remains remarkably dry on deck, even when pressed hard. The spade rudder provides immediate feedback and high maneuverability in tight marinas, though it lacks the ultimate protection of a skeg-hung design found on more conservative blue-water cruisers.

Interior Comfort & Variations

The Cal 39 underwent significant interior and structural evolutions across its production run. The original 1970-1971 model (sometimes called the "Cal 39-1") featured a more utilitarian, race-focused layout. However, the Mark II (introduced in 1978) and the Mark III (1983) transformed the vessel into a legitimate long-distance cruiser. These later variants utilized the hull's nearly 12-foot beam to create an expansive salon, characterized by rich teak joinery and a functional U-shaped galley that is well-suited for cooking at sea.

Sibling variations are critical to understand when evaluating this model. The Mark II was designed with a more traditional "coastal" interior, whereas the Mark III (and the very rare Mark IV) often featured a redesigned "T" cockpit and updated deck molds. The Mark III interior typically includes a dedicated navigation station to starboard and a large V-berth forward, with some configurations offering an aft cabin or a double quarter berth. Headroom is generous throughout, usually exceeding 6'2", making it a viable liveaboard option for taller sailors. The use of solid fiberglass in the hull, coupled with plywood-cored decks, provides a sturdy, insulated environment, though the aesthetic shifted from the "all-white" fiberglass look of the 60s to a more traditionalist wooden aesthetic in the 80s.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Cal 39 with a focus on three high-signal technical areas. First is the "Cal Smash," a term used in owner circles to describe compression of the mast step into the overhead of the keel or the supporting bulkhead. This occurs when the wooden core of the mast step or the structural bulkhead rots due to water ingress from the mast boot.

Second, the deck hardware and chainplates should be scrutinized. Because Jensen Marine used plywood coring for the decks, any unsealed penetrations from added hardware can lead to localized delamination and soft spots. A thorough percussion test of the deck is mandatory. Third, the spade rudder should be inspected for moisture and "play" in the rudder post. While the design is robust, decades of use can lead to worn bushings or internal saturation of the foam core within the rudder blade. Finally, on older models, the original Perkins 4-108 engines are reliable but often suffer from oil leaks at the rear main seal; buyers should check the bilge for signs of chronic leakage.

Community & Resources

The Cal 39 benefits from one of the most dedicated owner communities in the sailing world. The Cal Sailboats association and various technical wikis provide an exhaustive repository of original manuals, wiring diagrams, and modification guides. These groups are particularly active in the Pacific Northwest and Southern California, where the "Cal Cup" and other brand-specific regattas have historically taken place.

The Verdict

The Cal 39 remains a benchmark for those seeking a "performance classic." It is a boat that rewards a skilled helm with surprising speed but possesses the structural integrity to cross oceans if properly refitted. It bridges the gap between the uncomfortable racers of the past and the under-ballasted "caravan" cruisers of the present.

Pros:

• Exceptional Performance: Balanced and fast across all points of sail.
• Robust Construction: Solid fiberglass hull with high-quality Lapworth engineering.
• Strong Resale Value: Remains highly sought after in the used market due to its racing pedigree.

Cons:

• Maintenance Intensity: Older models often require significant bulkhead or mast step repair.
• Spade Rudder Vulnerability: Less protection from debris compared to skeg-hung rudders.
• Plywood Deck Coring: Prone to rot if deck fittings are not meticulously maintained.