The Intrepid 28 is a notable departure from the traditional, full-keel Alberg designs that defined the Cape Dory Yachts legacy throughout the 1970s and 80s. Built by the Intrepid Yachts division of Cape Dory in East Taunton, Massachusetts, the model was an effort to capture the "performance cruiser" market. Unlike its heavy-displacement siblings, the Intrepid 28 was built using the molds of the Grampian 28, a Canadian design by naval architect Rolf van der Sleen. By utilizing this existing hull form, Cape Dory was able to offer a vessel with a fin keel and skeg-hung rudder, providing a more modern underbody that appealed to sailors seeking better maneuverability and light-air performance. Though it shared the high-quality craftsmanship of the Cape Dory Owners Association vessels, its limited production run—estimated by some sources at as few as ten units—makes it one of the rarer finds on the used market.
Intrepid 28 Information, Review, Specs

- Make
- Intrepid
- Model
- 28
- Builder
- Interpid Yachts
- Designer
- Rolf van der Sleen
- Number Built
- 10
- Production Year(s)
- 1979 - ??
Sailing Performance & Handling
The Intrepid 28 features a masthead sloop rig and a fin keel that dramatically alters its handling characteristics compared to a standard Cape Dory 28. With a displacement of approximately 7,500 pounds and a ballast-to-displacement ratio of roughly 41%, the boat is relatively stiff and stable. Owners on technical forums have noted that the boat is "solid and likes a stiff wind," though its performance in very light air is merely adequate rather than racing-oriented.
A common observation among helmsmen is that the Intrepid 28 does not balance well under mainsail alone; it requires a headsail to maintain directional stability and prevent excessive weather helm. The skeg-hung rudder provides a protected steering configuration that is rarer on fin-keel boats of this era, offering a degree of protection for the rudder post during accidental groundings. With a theoretical hull speed of 6.63 knots, it remains a capable coastal cruiser that tracks well for its size, even if it lacks the extreme "train-on-tracks" feel of the Alberg full-keel designs.
Interior Comfort & Variations
Because it was built using a hull designed to be "spacy" for its length, the Intrepid 28 offers an interior volume that surprises many familiar with narrow-beamed traditional cruisers. It provides standing headroom throughout the main cabin, extending even toward the forward V-berth—a rarity in 28-footers from the late 1970s. The standard layout includes a traditional V-berth forward, followed by an enclosed head and a salon with opposing settees.
Materials used by Cape Dory in the Intrepid line mirrored their premium sailboats, featuring abundant teak joinery and a functional galley. Some models were equipped with the Yanmar YSB8 diesel engine, though its low horsepower meant minimal motoring speeds in heavy chop. The sibling models in this line include the Intrepid 9m (a 30-foot "stretched" version with slightly more waterline) and the David Walters-designed Intrepid 35 and 40, which were larger, more sophisticated performance yachts built by the same division later in its history.
Known Issues & Buyer’s Checklist
The most significant technical departure for the Intrepid 28 was the use of Airex-cored construction in the hull and deck. While this was intended to provide a lighter, stiffer, and more thermally insulated boat, it presents specific risks for modern buyers:
- Airex Core Delamination: Unlike the solid fiberglass hulls of standard Cape Dory models, the Intrepid’s cored hull can suffer from moisture ingress if through-hull fittings were not properly bedded or "hard-spotted" with solid glass. A thorough percussion sounding or moisture meter test is essential.
- Deck Hardware Bedding: Like many boats of this vintage, stanchions and cleats were often bolted through cored areas. If water has reached the core, it can lead to soft spots and compression of the laminate.
- Engine Maintenance: The original Yanmar YSB8 or Volvo Penta powerplants are now decades old. Potential buyers should check for exhaust manifold corrosion and verify the availability of parts for these older single-cylinder units.
- Rigging Tension: As a masthead sloop with a fin keel, the rig undergoes significant stress. Check the chainplates (located near the hull-deck joint) for signs of weeping or hairline fractures in the fiberglass.
Community & Resources
The primary hub for technical data and historical records for this model is the Cape Dory Owners Association, which maintains a dedicated section for the Intrepid line. Because the boats were built alongside the standard Cape Dory fleet, many of the hardware components—manufactured by Spartan Marine—are still available or supported by the community of enthusiasts who maintain these New England-built classics.
The Verdict
The Intrepid 28 is a unique hybrid: the build quality of a Cape Dory paired with the modern underbody of a performance cruiser. It is an ideal choice for a sailor who admires the "yacht-like" finish of traditional builders but prefers the responsiveness of a fin keel.
Pros:
- Superior interior volume and headroom for its class.
- High-quality Cape Dory construction and teak joinery.
- Skeg-hung rudder offers better protection than most performance-oriented cruisers.
Cons:
- Cored hull requires more rigorous survey than solid glass equivalents.
- Extremely limited production makes finding parts and specific sistership advice difficult.
- Underpowered by modern standards if still using the original 8-hp diesel.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Skeg-Hung
- Ballast
- 3100 lbs
- Displacement
- 7500 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 28 ft
- Waterline Length (LWL)
- 24.5 ft
- Beam
- 9.5 ft
- Draft
- 4.82 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 30.92 ft
- E (Main Foot)
- 10.5 ft
- I (Foretriangle Height)
- 36 ft
- J (Foretriangle Base)
- 11.92 ft
- Forestay Length (est)
- 37.92 ft
- Sail Area
- 377 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 15.74
- Ballast / Displacement Ratio
- 41.33
- Displacement / Length Ratio (D/L) Ratio
- 227.67
- Comfort Ratio
- 22.61
- Capsize Screening Formula
- 1.94
- Hull Speed
- 6.63 kn