Flying Ant Sailboat Review, Specs, and Listings

John Spencer·1967·Dinghy Sports
Approximate drawing

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Hull Type
Monohull · centerboard
Rig
Fractional Sloop
LOA
10.5' · 3.2 m
Disp.
90 lbs · 41 kg
First year
1967

In the midtwentieth century, a quiet revolution occurred in the sailing centers of New Zealand and Australia. Helmed by pioneering designers, the era saw the birth of ultralightweight, highperformance dinghies constructed from marinegrade plywood and synthetic glues. Foremost among these innovators was John Spencer, affectionately dubbed the "Plywood King," who envisioned fast, affordable, and easily homebuilt designs that would democratize sailing. First formalized as a class in 1967, the Flying Ant was designed by Spencer as a junior highperformance training machine. Intended as a direct pathway to his larger twelvefoot Cherub, the Flying Ant quickly grew into a foundational stepping stone for young racers throughout the Southern Hemisphere. Its legacy is underscored by the legendary class alumni who cut their teeth on its lively deck, including internationally renowned yacht designers Bruce Farr and Ron Holland, champion racer Mark Bethwaite, and America’s Cup veterans Erle Williams and Joe Allen.

Measurements

Dimensions 01

Length Overall
10.5 ft
Length on deck
Waterline Length
Beam
4.25 ft
Draft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass/Wood Composite
Hull Type
Monohull
Keel Type
Centerboard
Rudder
1× —
Ballast
(Lead)
Displacement
90 lbs
Water Capacity
Fuel Capacity

Rig & sails 03

Rigging Type
Fractional Sloop
Mainsail luff
Mainsail foot
Foretriangle height
Foretriangle base
Forestay Length (estimated)
Sail Area
73 sqft

Calculations 04

Sail Area to Displacement Ratio
58.16
Ballast to Displacement Ratio
Displacement to Length Ratio
Comfort Ratio
Capsize Screening Ratio
3.79
Hull Speed

At ten and a half feet in length, the Flying Ant introduces junior crews to the raw athletic demands of a single trapeze, fractional sloop rig, and spinnaker. By bridging the gap between basic starter dinghies—like the Optimist, Sabot, or Pelican—and modern high-performance skiffs, the class has preserved its status as a vital development platform for nearly six decades.

Design Brief & Intent

Spencer’s design brief for the Flying Ant was to create an uncompromising, double-handed skiff trainer for sailors under the age of seventeen. The boat was engineered to introduce junior sailors to multi-sail handling, spinnaker mechanics, and trapeze work, preparing them for the physical realities of high-level skiff racing. Unlike contemporary junior trainers of the era, which favored heavy, stable hulls, the Flying Ant demanded athletic precision.

The physical layout was stripped of all superfluity. Built with a hard-chine hull, flat-bottomed planing sections, and a vertical stem and stern, the design was optimized for maximum waterline length and planing potential. The cockpit layout prioritized unhindered crew movement, featuring a wide, open design that has evolved into a fully self-draining cockpit in modern fiberglass iterations. Structural bulkheads double as buoyancy tanks, ensuring the boat remains easily rightable and safe to manage after a capsize. Spencer's choice of materials—thin plywood over minimal framing—ensured that ordinary families could build the boat in their garages for a fraction of the cost of a commercial dinghy, successfully democratizing high-performance racing.

Variations & Configurations 2

While the Flying Ant began its life strictly as a home-built plywood craft, the class has undergone significant structural evolution. Today, hulls are split between classic three-ply marine plywood constructions and high-tech, vacuum-bagged fiberglass or foam-sandwich composite builds, historically manufactured by builders such as Dinghy Sports in Australia.

The fractional sloop rig supports a mainsail and jib. The most significant configuration shift occurred with the spinnaker setup. Historically, the boat carried a traditional symmetric spinnaker flown from a conventional pole. However, to keep the boat aligned with modern skiff pathways, the class introduced an asymmetric spinnaker flown from a retractable bowsprit. In a progressive rule change, the class association voted to allow both symmetric and asymmetric configurations to compete alongside one another. This decision ensured that older, "classic" configurations remained competitive while allowing newer teams to transition to modern, apparent-wind sailing techniques. In recent years, modernized one-design configurations featuring carbon masts, carbon foils, and dedicated asymmetric setups have revitalized the fleet in New Zealand waters.

Sailing Performance & Handling

The technical specifications of the Flying Ant translate directly to an exhilarating, highly responsive ride. With an incredibly light hull weight of 90 pounds, the boat possesses an astronomical sail-area-to-displacement ratio of 58.16. In physical terms, this high sail area relative to its featherweight displacement means the Flying Ant behaves like a true skiff, lifting onto a flat plane almost instantly in any breeze over eight knots. It does not push through waves; it skitters over them.

However, this blistering performance comes at the price of initial stability. Its capsize ratio of 3.79 highlights its tender nature. At the dock or in light air, the narrow waterline and hard chines make the hull highly sensitive to crew weight, meaning a misplaced step can easily result in a capsize. Once moving, however, the dynamic lift of the flat hull sections stabilizes the boat. The helm is razor-sharp and feather-light, providing immediate feedback. For the crew, the single trapeze requires rapid coordination and core strength to keep the boat flat, while the helm must work in perfect unison, bearing away in gusts to harness the boat's incredible acceleration rather than letting it heel.

Market Snapshot & Economics

On the brokerage market, the Flying Ant occupies a highly localized but passionate niche. While virtually non-existent in North America and Europe, the class maintains a dedicated presence in Western Australia, New South Wales, and New Zealand. Because these boats are primarily used as youth trainers, they do not trade for astronomical prices; instead, they represent an incredibly high-value entry point into high-performance skiff sailing.

Older wooden hulls can often be acquired for nominal sums, making them popular DIY restoration projects. Modern, race-ready composite hulls built with advanced materials command a modest premium but hold their value exceptionally well due to the active class association and constant demand from graduating junior sailors. The economics of a Flying Ant refit are generally highly favorable. The small scale of the sails, spars, and rigging keeps material costs manageable, allowing owners to execute full overhauls on a modest budget.

Known Issues & Triage

Given the class's age and high-stress performance characteristics, buyers and restorers must watch for several specific structural weak points. On older wooden hulls, freshwater dry rot is the primary enemy. It typically manifests in the plywood deck panels, along the gunwales, and around the joints of the centerboard trunk. Triage requires cutting back the rotted marine ply, treating the surrounding timber with penetrating epoxy, and laminating new plywood panels.

For both wood and fiberglass hulls, the mast step is a common failure point. The downward compression of the high-tension rig, combined with the dynamic loads of a trapezing crew, can cause the deck or structural keelson beneath the mast step to deflect or crack. Owners frequently reinforce this area by glassing in high-density G10 backing plates or carbon fiber collars to distribute the loads. Similarly, the chainplates must be carefully inspected. The extreme loads from the trapeze wire can pull at the chainplate attachments, leading to stress crazing in fiberglass or delamination of the internal wood backing blocks.

Modernization & Upgrades

Modernizing a Flying Ant is a common pathway for competitive junior racers and classic dinghy restorers looking to maximize performance. The most popular upgrade is transitioning from older, heavy aluminum spars to modern carbon fiber masts and booms. This significantly reduces weight aloft, lowering the boat's center of gravity and making it substantially easier to right after a capsize while reducing mast-bend fatigue under trapeze loads.

Another common upgrade is retrofitting the deck layout to accommodate a retractable carbon fiber bowsprit and a bow-launching spinnaker chute. This allows the conversion from a symmetric spinnaker to a modern asymmetric kite, simplifying downwind maneuvers. Veteran owners also routinely replace heavy, wire-to-rope halyards and bulky block systems with ultra-low-friction rings and high-strength twelve-strand Dyneema lines, cleaning up the cockpit layout and allowing finer, more precise control line adjustments.

The Verdict

The Flying Ant is a masterclass in minimalist, high-performance dinghy design. Decades after its inception, John Spencer's creation remains one of the most effective, thrilling, and demanding junior trainers ever conceived, bridging the gap to modern skiff racing with absolute authority.

Pros:

Cons:

  • Highly tender and unforgiving in heavy air, requiring athletic, coordinated crew work to avoid frequent capsizes.
  • Limited geographic presence, with active fleets primarily restricted to Australia and New Zealand.
  • Older wooden hulls require diligent maintenance to prevent or address structural dry rot.
  • Cockpit is cramped for older teenagers or adult sailors due to its compact ten-and-a-half-foot length.

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