The Sailcraft A-Lion stands as a landmark in the history of the International A-Class Catamaran development. Born from the same design DNA as the legendary Olympic Tornado, this single-handed 18-foot racing machine was designed by Rodney March and produced by Reg White’s Sailcraft Ltd. during the late 1960s and early 1970s. At a time when the A-Class was shifting from experimental plywood "one-offs" to more standardized production, the A-Lion offered a sophisticated fiberglass platform that allowed sailors to compete in one of the world’s most refined development classes without the need to build their own hulls.
Sailcraft A-Lion Information, Review, Specs

- Make
- Sailcraft
- Model
- A-Lion
- Builder
- American Fiberglass Corp.
- Designer
- Jerry and David Hubbard
- Number Built
- Production Year(s)
- 1967 - ??
While the modern A-Class has evolved into a carbon-fiber, hydrofoiling marvel, the A-Lion represents the "classic" era of the class. It followed the strict box rule of the International A-Class Catamaran Association: a maximum length of 18 feet, a maximum beam of 7 feet 6 inches, and a sail area of 150 square feet. The A-Lion was essentially the smaller, single-handed sibling to the B-Class Tornado, sharing its progenitor's emphasis on low-drag hull forms and high-aspect-ratio rigs.
Sailing Performance & Handling
The A-Lion is defined by its extreme sensitivity and high power-to-weight ratio. Unlike the multi-crew catamarans of its era, the A-Lion requires a nuanced touch, as the single sailor must manage the helm, the mainsheet, and the trapeze simultaneously. Its hull design features a sharp entry and relatively narrow sections, optimized for slicing through chop rather than bouncing over it.
In light air, the A-Lion is exceptionally fast, often outpacing much larger monohulls due to its minimal wetted surface area. In a breeze, the boat becomes a physical challenge; the sailor must be quick on the trapeze to keep the windward hull just skimming the surface. Handling is described by veterans as "surgical," with the Rodney March hulls providing excellent tracking. However, because the A-Lion predates modern wave-piercing bows and high-volume foredecks, it is prone to "pitchpoling" (stuffing the bows) if the sailor does not move their weight far aft during high-speed downwind legs. The technical ratios of the A-Class are geared toward maximum sail area on the lightest possible platform, resulting in a boat that feels alive and twitchy compared to the more stable Hobie 16s of the same era.
Popular Mentions & Media
The A-Lion’s primary claim to fame is its direct lineage to Reg White and the Tornado’s Olympic success. While it hasn't been the star of major motion pictures, it is frequently cited in historical retrospectives of multihull design as the boat that helped professionalize the A-Class in the United Kingdom. References to the A-Lion often appear in biographies of Reg White MBE, detailing how Sailcraft Ltd. utilized the A-Lion as a testbed for construction techniques that would eventually be applied to the Tornado.
Known Issues & Buyer’s Checklist
Purchasing a Sailcraft A-Lion today usually means acquiring a "vintage" or "classic" A-Cat, and the checklist is primarily focused on the longevity of 1970s fiberglass construction.
- Hull Softness and Delamination: Early fiberglass hulls were prone to "soft spots," particularly on the decks where the sailor moves frequently and around the daggerboard trunks. Press firmly across the deck and hull sides; any clicking or flexing indicates delamination of the core.
- Beam Attachment Points: The beams on an A-Lion are the primary structural members holding the two hulls together. Inspect the "turtles" (the mounting points on the hulls) for stress cracks or elongated bolt holes, which can lead to a "racked" or twisted frame.
- Mast Step Compression: The downward force of the rig is immense on a boat of this weight. Check the area directly under the mast step for sagging or hairline fractures in the fiberglass.
- Weight Competitiveness: Modern A-Cats are built to the class minimum of 75kg using carbon fiber. A vintage fiberglass A-Lion will likely be significantly heavier, which, while more durable for recreational sailing, makes it less competitive in modern "open" A-Class racing.
Community & Resources
Owners of the A-Lion are typically supported by the broader classic multihull community. The International A-Class Catamaran Association remains the primary authority for class rules and historical technical data. While the association now focuses largely on foiling carbon boats, they maintain a "Classic" division for non-foiling designs, where the A-Lion and its contemporaries still find a home.
The Verdict
The Sailcraft A-Lion is a purist's catamaran, offering a window into the golden age of British multihull innovation. It is an demanding, rewarding, and historically significant vessel.
Pros:
- Exceptional Pedigree: Designed by Rodney March and built by the legendary Sailcraft Ltd.
- Pure Sailing: Offers a raw, high-performance experience that rewards technical skill.
- Classic Aesthetics: The slender fiberglass hulls have a timeless, elegant profile compared to modern "boxy" designs.
Cons:
- Technical Difficulty: Not suitable for beginners; requires trapeze experience and high agility.
- Aging Materials: Finding an example without hull softness or structural fatigue is increasingly difficult.
- Pitchpole Risk: Low-volume bows require constant weight management in heavy air.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Catamaran Sailboat
- Keel Type
- Centerboard
- Ballast
- -
- Displacement
- 300 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 18 ft
- Waterline Length (LWL)
- -
- Beam
- 7.5 ft
- Draft
- 2.5 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Cat Rig
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 150 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 53.55
- Ballast / Displacement Ratio
- —
- Displacement / Length Ratio (D/L) Ratio
- —
- Comfort Ratio
- —
- Capsize Screening Formula
- 4.48
- Hull Speed
- — kn