Jensen Cal 28 Information, Review, Specs

Sailing Performance & Handling

The Cal 28 is characterized by its light-displacement hull and a fin keel, a combination that was revolutionary at the time of its release. With a Displacement-to-Length (D/L) ratio typically falling in the mid-200s and a Sail Area-to-Displacement (SA/D) ratio of approximately 17.5, the boat is exceptionally responsive in light-to-moderate air. Unlike the heavy full-keel boats of its era, the Cal 28 tracks well but remains highly maneuverable thanks to its spade rudder, which was a progressive feature for a 28-foot cruiser in the 1960s.

According to historical performance data and period reviews, the boat excels on a reach and shows surprising speed upwind, though it can become "tender" (leaning quickly to a breeze) once the wind exceeds 15 knots. Owners often suggest reefing the mainsail early to maintain control and reduce weather helm. The spade rudder provides excellent feedback to the helm, allowing for precise steering, though it lacks the protection of a skeg-hung or keel-mounted rudder. Its performance profile made it a staple in PHRF (Performance Handicap Racing Fleet) racing for decades, where it frequently outsailed newer, more expensive designs.

Interior Comfort & Variations

The most striking feature of the original Cal 28 is its flush-deck design. While this gives the boat a low, sleek profile from the exterior, it creates a surprisingly voluminous and open interior for a 28-foot vessel. Without the intrusion of a traditional cabin trunk, the headroom is remarkably consistent throughout the main cabin, often exceeding six feet in the center. The layout typically features a V-berth forward, followed by a marine head (often located under a filler cushion or in a small compartment), and a main salon with a settee that converts into a berth.

The galley is usually positioned aft, near the companionway, for better ventilation. Materials were typical of the Jensen Marine era: functional mahogany or teak trim against white fiberglass liners, prioritizing durability and ease of maintenance over luxury. It is important to distinguish this original Lapworth design from the later Cal 28-2, which was designed by C. Raymond Hunt Associates in the mid-1980s. The later 28-2 model features a more modern "sugar scoop" stern, a traditional cabin trunk with more windows, and a completely different interior arrangement with an aft-cabin layout, reflecting the shift toward coastal cruising comfort over the original's racing-first philosophy.

Known Issues & Buyer’s Checklist

Prospective buyers of a vintage Cal 28 should prioritize a structural survey focusing on the boat's age-specific vulnerabilities.

1. The "Cal Smile": Like many Jensen Marine boats of this era, the Cal 28 can develop a crack at the leading edge of the keel-to-hull joint. While often cosmetic, it can indicate the need to tighten or replace keel bolts.
2. Deck Core Delamination: The flush deck is a large expanse of balsa-cored fiberglass. Over time, hardware leaks (especially around stanchions and the mast step) can lead to soft spots. A thorough percussion test (hammer sounding) is essential.
3. Mast Step Compression: The mast is deck-stepped, supported by a compression post that transfers the load to the keel. In some units, the wooden block at the base of the compression post or the deck structure itself may have rotted or compressed, leading to a sagging deck and poor rig tension.
4. Spade Rudder Integrity: The spade rudder is a hollow fiberglass shell. Water ingress can cause the internal steel or aluminum structure to corrode, leading to catastrophic failure. High-signal technical reports suggest checking for "weeping" rust or swelling in the rudder blade.
5. Chainplate Leakage: The chainplates are bolted to the bulkheads. Constant moisture from leaking deck seals can rot the plywood bulkheads, compromising the rig's structural integrity.

Community & Resources

The Cal 28 benefits from an incredibly dedicated owner base. The Cal Boats community, often organized through the "Cal List" and various regional groups, provides a wealth of technical knowledge. The most prominent technical resource is the Cal 28 National Association (where active) and the wider Cal Sailboat owner forums, which maintain archives of original owner manuals and sail plans. Many owners also refer to the technical drawings and specifications preserved by the Cal-Jensen historical archives to assist in restorations.

The Verdict

The Cal 28 is a quintessential "good old boat" that offers high-performance DNA at an entry-level price point. It is best suited for sailors who prioritize sailing sensation and historical design over modern "condo-maran" amenities.

Pros:

• Exceptional Light-Air Performance: Often faster than modern cruisers of similar length.
• Flush Deck Utility: Provides a large, flat working area for sail changes and lounging.
• Headroom: Surprisingly spacious interior for a boat designed in the early 60s.
• Simplicity: Minimal complex systems make it an ideal project for a DIY owner.

Cons:

• Aging Structure: Requires a vigilant eye for deck rot and keel joint issues.
• Tender in Heavy Air: Requires early reefing and active sail trim to keep the boat upright.
• Minimal Privacy: The open interior layout lacks the private cabins found in 1980s designs.