Cal 28 Information, Review, Specs

Cal 28 Drawing
Make
Cal
Model
28
Builder
Jensen Marine
Designer
C. W. Lapworth
Number Built
347
Production Year(s)
1963 - 1969

The Cal 28 represents a significant chapter in the collaboration between legendary naval architect C. William Lapworth and the fiberglass production pioneers of the 1960s and 70s. While originally conceived by Jensen Marine in California, the model gained a distinct northern identity through the licensed production of Calgan Marine Ltd. in North Vancouver. This vessel was produced in two primary iterations: the original "flush-deck" Cal 28 (built between 1963 and 1969) and the more cruiser-friendly Cal 2-28 or Cal 28-2 that followed. In the Canadian market, Calgan Marine also utilized this hull form for their proprietary Crown 28, bridging the gap between a competitive club racer and a coastal cruiser capable of handling the heavy air and chop of the Pacific Northwest.

Sailing Performance & Handling

The Cal 28 is defined by Lapworth’s signature design philosophy: a light-to-moderate displacement hull paired with a high-aspect fin keel and a balanced spade rudder. This configuration was revolutionary at the time, moving away from the heavy full-keel designs that dominated cruising. The boat is known for its exceptional responsiveness; the spade rudder provides "dinghy-like" feedback, allowing the helm to feel every nuance of the water. Owners often report that the boat tracks surprisingly well for a fin-keel design of its era, though it requires active trimming to maintain balance in gusty conditions.

With a high sail area-to-displacement ratio, the Cal 28 excels in light-to-moderate air, often outpacing larger, heavier contemporaries. In heavy weather, the boat remains stiff and predictable, a trait often attributed to its generous ballast ratio. However, the early flush-deck models are known for being "wet" boats in a head sea, as the lack of a raised trunk cabin allows spray to travel further aft along the deck. The later 2-28 and Crown 28 variants, with their modified deck molds, offer a slightly drier ride and improved visibility from the cockpit.

Interior Comfort & Variations

The interior of the Cal 28 evolved significantly over its production run. The original flush-deck model prioritized deck space and racing utility, resulting in a cabin with limited headroom that felt somewhat cave-like to those accustomed to traditional trunk cabins. Despite this, it featured a functional layout with a V-berth forward, a compact galley, and settees that doubled as sea berths.

The introduction of the Cal 2-28 (and the Calgan Crown 28) addressed these comforts. By adding a raised cabin house, the designers achieved nearly six feet of headroom, transforming the vessel into a legitimate weekend cruiser. These later models typically feature a bulkhead-mounted table that opens up the salon, a more enclosed head for privacy, and improved ventilation through forward-facing ports. The Crown 28 variants built by Calgan Marine often featured teak-heavy interiors reflecting Canadian craftsmanship of the era, distinguishing them from the more utilitarian fiberglass-heavy finishes found in some early American builds.

Known Issues & Buyer’s Checklist

Prospective buyers of a Cal 28 or Crown 28 should prioritize a structural inspection of the "Cal Beam." This is a steel reinforcement beam located under the cabin sole or at the mast step intended to distribute the massive compression loads of the mast. Over decades, saltwater intrusion often leads to significant corrosion of this beam, which can cause the deck to sag or the rigging to lose tension. Replacing a rotted compression beam is a major structural undertaking.

Another high-signal area for inspection is the deck core. Like many boats of this vintage, the Cal 28 utilized a balsa-cored deck. Portlights, stanchion bases, and the mast step are common points for water ingress, which can lead to localized delamination or "soft spots." Additionally, the spade rudder should be checked for "rudder play" or water absorption within the fiberglass shell, as the internal stainless steel skeleton can corrode if left damp over long periods. Finally, because these boats were popular racers, the chainplates and bulkhead attachments should be scrutinized for stress cracks or movement.

Community & Resources

The legacy of the Cal 28 is supported by a robust network of enthusiasts. The most prominent resource is the Cal Yachts Archive, which serves as a technical repository for original brochures, line drawings, and manual scans for the Jensen-built models. In the Pacific Northwest, the Crown and Calgan community often congregates around local yacht clubs in British Columbia, where the Crown 28 remains a staple of the classic plastic racing fleets.

The Verdict

The Cal 28 is a quintessential example of the "performance cruiser" archetype that defined the early fiberglass era. It remains an excellent choice for sailors who prioritize sailing feel and historical pedigree over modern "condo-maran" volume.

Pros:

  • Excellent light-air performance and helm sensitivity.
  • Robust construction capable of handled spirited coastal passages.
  • Strong community support and availability of technical documentation.
  • The later 2-28/Crown variants offer a surprisingly livable interior for a 28-foot boat.

Cons:

  • Susceptibility to "Cal Beam" corrosion and deck core rot.
  • Early flush-deck models lack the headroom required for comfortable extended cruising.
  • The spade rudder is vulnerable to impact compared to skeg-hung designs.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Spade
Ballast
2200 lbs (Lead)
Displacement
6000 lbs
Water Capacity
28 gal
Fuel Capacity
18 gal

Dimensions

Length Overall (LOA)
28 ft
Waterline Length (LWL)
22.5 ft
Beam
9 ft
Draft
4.5 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
28 ft
E (Main Foot)
11.7 ft
I (Foretriangle Height)
33 ft
J (Foretriangle Base)
11.4 ft
Forestay Length (est)
34.91 ft
Sail Area
352 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
17.05
Ballast / Displacement Ratio
36.67
Displacement / Length Ratio (D/L) Ratio
235.16
Comfort Ratio
20.57
Capsize Screening Formula
1.98
Hull Speed
6.36 kn