The Magnum Evolution Quarter Ton is a distinctive monohull sailboat, meticulously designed by the acclaimed naval architect Julian Everitt and constructed by Evolution Yachts Ltd. between 1976 and 1981. Conceived as a competitive contender within the highly popular Quarter Ton racing class, this vessel seamlessly blends performance aspirations with practical cruising capabilities, embodying the essence of a versatile racer-cruiser for its era. Renowned for its solid build and nimble handling, the Magnum Evolution Quarter Ton has continued to prove its mettle in contemporary revival Quarter Ton Cup events.
Magnum Evolution Quarter Ton Information, Review, Specs
- Make
- Model
- Number Built
- 9
- Production Year(s)
- 1976 - 1981
The creation of the Magnum Evolution Quarter Ton spans the pivotal years of 1976 to 1981, a period coincident with the brief but impactful operational lifespan of its builder, Evolution Yachts Ltd. This Southampton-based company, founded in 1977 by Eric Reynolds and Julian Everitt, was dedicated to bringing Everitt's innovative designs to fruition in fiberglass. Julian Everitt served as the sole designer for Evolution models, imbuing them with a philosophy centered on creating versatile cruiser-racers that offered both spirited performance and practical usability.
The Magnum Evolution Quarter Ton was developed specifically for the International Offshore Rule (IOR) Quarter Ton class, a highly influential racing category that emerged in the 1970s and significantly shaped yacht design during that period. Designs under this rule rapidly evolved, pushing boundaries for speed and efficiency while adhering to strict rating parameters. The Magnum, with its fin keel and spade rudder, represents a performance-oriented approach typical of the class's pursuit of speed and responsiveness on the racecourse.
Sailing Performance and Handling
The Magnum Evolution Quarter Ton, with its fractional sloop rig, is engineered for a balanced blend of speed and manageability. Its design ratios offer insights into its on-water characteristics. With a Sail Area to Displacement (SA/Disp) ratio of approximately 17.41, the Magnum possesses a healthy sail plan, suggesting good acceleration and responsiveness in a range of wind conditions, particularly well-suited for its racer-cruiser designation.
Its Ballast to Displacement (Bal/Disp) ratio of around 0.30 indicates a lighter ballast percentage, which, while potentially leading to a more tender initial feel, also contributes to a nimble and responsive nature. This characteristic often translates to a boat that is quick to accelerate and highly reactive to trim adjustments, rewarding a skilled helmsman. The Displacement to Length (Disp/LWL) ratio, calculated at approximately 207.5, positions the Magnum Evolution Quarter Ton firmly in the moderate displacement category, leaning towards lighter performance-oriented vessels of its size. This balance contributes to a design that aims for competitive speed without sacrificing too much interior volume.
Anecdotal evidence from racing circuits highlights the Magnum's capability, with reports of it securing victories in competitive Quarter Ton fleet races, such as the Vice Admirals Cup series in Cowes. The Quarter Ton class itself is known for its intense competition, where "fractions of a knot separate the good from the bad," underscoring the importance of precise handling, tactical acumen, and efficient sail trim to achieve success.
Accommodations and Layout
Given its primary role as a Quarter Ton racer-cruiser from the 1970s, the Magnum Evolution Quarter Ton's interior accommodations are generally designed with a focus on functionality and maximizing space within the compact hull. While specific details on headroom are not available, it would typically feature a layout common to performance-oriented yachts of its size and era.
This would likely include a V-berth forward, a compact head compartment (often to port or starboard), and a main salon area that doubles as sleeping space. The salon would typically consist of opposing settees that can serve as berths, with a small fold-down table. A basic galley area, usually to one side, would likely offer a sink, a small icebox, and space for a portable stove. Storage would be utilitarian, with cubbies and lockers designed to accommodate essential cruising and racing gear. Interior finishes would generally prioritize durability and ease of maintenance, with a functional blend of fiberglass and some wood trim. Ventilation would typically rely on a forward hatch and possibly a few portlights. The emphasis is on providing essential comforts for short-term cruising or overnight racing, rather than extensive liveaboard luxury.
Measurements
Construction & Hull
- Construction Material
- Fiberglass (Solid)
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Spade
- Ballast
- 1200 lbs (Lead)
- Displacement
- 4007 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Engine
- Engine Make
- —
- Engine Model
- —
- Engine Type
- —
- Engine HP
- —
- Engine Count
- 1
- Drive Type
- —
- Fuel Type
- —
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- 28.1 ft
- E (Main Foot)
- 10.9 ft
- I (Foretriangle Height)
- 25.5 ft
- J (Foretriangle Base)
- 9.5 ft
- Forestay Length (est)
- 27.21 ft
- Main Sail Area
- 153.15 sqft
- Foretriangle Sail Area
- 121.13 sqft
- Total Sail Area (Reported)
- 274 sqft
- Total Sail Area (Calc)
- 274.27 sqft
Dimensions
- LOA
- 27.4 ft
- LWL
- 20.5 ft
- Beam
- 9 ft
- Draft
- 5 ft
- Max Headroom
- -
- Air Draft
- -
Calculations
- Hull Speed
- 6.07 kn
- Pounds per Inch Immersion
- 659.24