Tornado Catamaran — Information, Review, Specs

R. March/T. Pearce/R. White·1967·~4,700 hulls·Sailcraft
Tornado Catamaran drawingBuilder drawing
Hull type
Catamaran · centerboard
Rig
Fractional Sloop
LOA
20' · 6.1 m
Displ.
300 lbs · 136 kg
First year
1967

The Tornado Catamaran represents one of the most significant chapters in the history of highperformance multihull sailing. Designed by Rodney March in 1967 with contributions from Terry Pierce and Reg White, the Tornado was conceived as a "pure" racing machine, eventually serving as the Olympic multihull class from 1976 through 2008. As an ISAFapproved builder, Windrush Yachts has played a vital role in the class's modern era, applying advanced composite techniques to ensure these vessels meet the rigorous tolerances required for international competition. The boat’s design was so advanced for its time that it remained largely unchanged for over thirty years, only undergoing a major technical evolution in 2000 to keep pace with modern performance standards.

Measurements

Dimensions 01

LOA
20 ft
LWL
-
Beam
10 ft
Draft
2.5 ft
Max headroom
-
Air draft
31.5 ft

Construction & hull 02

Construction
Fiberglass/Wood Composite
Hull type
Catamaran
Keel type
Centerboard
Ballast
-
Displacement
300 lbs
Water
-
Fuel
-

Rig & sails 03

Rig type
Fractional Sloop
P · main luff
-
E · main foot
-
I · fore ht.
-
J · fore base
-
Forestay (est)
-
Sail area
235 sqft

Calculations 04

SA/D ratio
83.9
Ballast/Disp.
D/L ratio
Comfort ratio
Capsize screening
5.98
Hull speed

Sailing Performance & Handling

The sailing characteristics of the Tornado are defined by its extreme power-to-weight ratio and its 10-foot beam, which is remarkably wide for a 20-foot hull. This width provides a massive righting moment, allowing the crew to keep the boat flat and accelerate in conditions that would force other catamarans to de-power. According to the International Tornado Association, the boat was designed to be the fastest two-man catamaran in the world, a title it held for decades.

In terms of handling, the Tornado is known for its sensitivity. The hulls are narrow and have a high aspect ratio, which minimizes drag but requires precise weight distribution to prevent "pitch-pole" incidents in heavy air. In 2000, the class transitioned from the "Classic" configuration to the "Sport" configuration. This update added a carbon fiber mast, a second trapeze for the helm, and a large asymmetric spinnaker. This evolution significantly increased the boat's downwind speed and tactical complexity, turning it into a physically demanding platform that rewards athletic crews. The boat tracks with exceptional "sea-kindliness" for a beach cat, cutting through chop rather than bouncing over it, a trait often attributed to the subtle rocker and hull shape refined by Rodney March.

The Tornado’s cultural footprint is inextricably linked to the Olympic Games. It made its debut at the 1976 Montreal Olympics and remained a staple of the games for over 30 years. It was the platform where legendary sailors like Darren Bundock and Glenn Ashby honed the skills that would later dominate the America’s Cup. The boat is often cited in sailing literature as the precursor to the modern foiling catamarans seen in SailGP and the America's Cup, serving as the primary testbed for wing-mast technology and high-tension rigging. Its retirement from the Olympics after Beijing 2008 sparked a global "Save the Tornado" movement among multihull enthusiasts, which ultimately helped transition the class into a vibrant independent racing circuit.

Known Issues & Buyer’s Checklist

Prospective buyers of a used Tornado, particularly older models not built by specialists like Windrush, must be diligent regarding structural integrity.

  1. Beam Bolt Sockets: Given the 10-foot beam and the immense loads generated by the rig, the areas where the aluminum beams bolt into the hulls are high-stress points. Buyers should check for hairline fractures or "crazing" in the gelcoat around these sockets, which may indicate structural fatigue.
  2. Hull Delamination: Older boats were often built using a foam-sandwich construction. Over time, particularly in boats stored mast-up or in high-heat environments, the skin can delaminate from the core. A "tap test" across the hull sections can reveal dull thuds that signify a void.
  3. The "Sport" Conversion: Many boats on the market were originally "Classic" models converted to "Sport" specs. It is critical to inspect the mast step and the reinforcement under the foredeck to ensure they were properly strengthened to handle the increased loads of the spinnaker and double trapeze.
  4. Rudder Play: The Tornado uses a sophisticated kick-up rudder system. Any slop or play in the pintles or the internal casting can lead to vibration at high speeds, which compromises steering precision.

Community & Resources

The class is supported by a robust international network. The International Tornado Association serves as the primary governing body, maintaining the strict one-design rules that have kept the boat competitive across different generations of builders. In Australia, the class remains active through regional associations that organize national championships, often supported technically by Windrush Yachts, who continue to provide parts and expertise for the Tornado and its siblings, such as the Windrush 14.

The Verdict

The Tornado Catamaran remains a benchmark for speed and elegance in the multihull world. While it has been superseded in the Olympics by foiling designs, its "displacement" speed and handling remain world-class, offering a purer sailing experience than many modern foiling platforms.

Pros:

  • Legendary Pedigree: An Olympic veteran with a massive global racing community.
  • Build Quality: Windrush-built models are renowned for their stiffness and longevity.
  • Pure Speed: Capable of exceeding 30 knots in the right conditions.

Cons:

  • Logistics: The 10-foot beam makes it difficult to trail without a specialized tilting trailer.
  • Complexity: The "Sport" rig requires a high level of crew coordination and physical fitness.
  • Ageing Fleet: Buyers must be wary of older, "soft" hulls that have seen heavy Olympic-level campaigning.

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