The Wolverine 28 is an specialized offshore vessel that represents a significant departure from standard production cruiser norms. Most notably associated with the design work of Alan Gurney—the renowned naval architect behind the record-breaking Windward Passage—the Wolverine 28 was primarily built by The Rainbow Company in the early 1960s. Utilizing multi-chine aluminum construction, the vessel was engineered for high-latitude durability and performance-oriented sailing, characterized by a strikingly narrow beam and a "needle" hull profile that prioritizes slicing through chop over internal volume.
Wolverine 28 Information, Review, Specs

- Make
- Wolverine
- Model
- 28
- Builder
- The Rainbow Company
- Designer
- Alan Gurney
- Number Built
- Production Year(s)
- 1963 - ??
A second, distinct "Wolverine 28" exists in the multihull sphere as a high-efficiency power catamaran designed by Kurt Hughes. This modern iteration focuses on ultra-low fuel consumption and utilizes cylinder-molded plywood or composite construction. However, in the context of established nautical lineage and traditional marine research, the Alan Gurney-designed aluminum sloop remains the primary reference for this designation.
Sailing Performance & Handling
The Wolverine 28 is defined by its high aspect ratio and a displacement-to-length (D/L) ratio of approximately 238, which classifies it as a medium-to-light displacement offshore racer by 1960s standards. Its narrow beam (7.5 feet) produces a Length-to-Beam (L/B) ratio of roughly 3.75, placing it among the narrowest designs in its size class. According to technical data from YachtDatabase, this "needle" hull shape allows the boat to maintain exceptional tracking and reduced wave-making resistance, though it inherently sacrifices initial stability.
On the water, the Wolverine 28 is reported to feel "active" and responsive. The masthead sloop rig is straightforward to tune, and the use of a fin keel paired with a spade rudder provides a tight turning radius. While it lacks the ultimate stability of a beamy modern cruiser, its motion comfort ratio of 28.7 suggests a surprisingly sea-kindly motion for a boat of its size, as the narrow hull tends to slice through head seas rather than pounding over them. Owners often note that while the boat heels quickly to its "sweet spot," it stiffens significantly once the narrow hull is submerged to its secondary chine.
Interior Comfort & Variations
Due to its extreme beam-to-length ratio, the interior of the Wolverine 28 is best described as functional and "ship-like" rather than spacious. The cabin arrangement typically follows a classic four-berth layout with a compact galley and a small head forward of the main bulkhead. Headroom is restricted compared to modern 28-footers, reflecting its heritage as a performance-first offshore design.
The construction materials play a significant role in the onboard experience; the aluminum hull is exceptionally rigid, eliminating the "oil-canning" or creaking common in older fiberglass hulls. However, insulation is a critical factor in these vessels. Without a high-quality thermal barrier, the aluminum can be prone to condensation in colder climates. Variations of the Wolverine 28 are rare, though some custom-finished versions feature more extensive wood joinery to soften the industrial feel of the aluminum interior. Sibling designs in the Gurney portfolio, such as his larger 33-foot aluminum racers, share the same multi-chine aesthetic and lean hull forms.
Known Issues & Buyer’s Checklist
- Galvanic Corrosion: As an aluminum-hulled vessel, the Wolverine 28 is highly susceptible to electrolysis. Prospective buyers must conduct a thorough survey of the hull's interior and exterior for pitting, especially near the through-hull fittings and the iron ballast keel.
- Insulation and Core Integrity: Inspect the condition of the interior insulation. Older foam or spray-on materials may have trapped moisture against the hull skin, potentially leading to "poultice corrosion."
- Iron Ballast Maintenance: The use of iron ballast in an aluminum hull requires a perfect dielectric barrier. Any breach in the coating between the iron and the aluminum can lead to rapid localized corrosion.
- Rigging Loads: Because the boat is narrow, the shroud angles are acute, putting significant compression on the mast step. Buyers should check the aluminum framing beneath the mast for any signs of deformation or stress cracking.
The Verdict
The Wolverine 28 is a "sailor's sailboat," designed for those who value the aesthetics of Alan Gurney’s era and the ruggedness of a metal hull. It is poorly suited as a dockside entertainer but excels as a coastal express cruiser for a couple or a solo sailor.
Pros:
- Exceptional tracking and performance in heavy chop.
- Rugged aluminum construction is nearly immune to osmosis and impact damage.
- Timeless, aggressive "needle-hull" aesthetic.
- Excellent maneuverability under sail due to the fin/spade configuration.
Cons:
- Significant maintenance requirements regarding zinc anodes and electrical bonding.
- Narrow interior feels cramped by modern standards.
- Limited initial stability leads to early heeling.
- Rare on the secondary market, making parts and community support difficult to find.
Measurements
Construction & Hull
- Construction Material
- Aluminum
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Spade
- Ballast
- - (Iron)
- Displacement
- 6800 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 28.16 ft
- Waterline Length (LWL)
- 23.33 ft
- Beam
- 7.5 ft
- Draft
- 4.5 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 298 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 13.28
- Ballast / Displacement Ratio
- —
- Displacement / Length Ratio (D/L) Ratio
- 239.07
- Comfort Ratio
- 28.95
- Capsize Screening Formula
- 1.58
- Hull Speed
- 6.47 kn