Taipan 4.9 Information, Review, Specs

Taipan 4.9 Drawing
Make
Taipan
Model
4.9
Builder
Australian High Performance Catamarans
Designer
Greg Goodall/Jim Boyer
Number Built
Production Year(s)
1982 - ??

Designed by Greg Goodall and Jim Boyer in the mid-1980s and officially launched in 1988, the Taipan 4.9 is a quintessential high-performance beach catamaran that redefined the 16-foot racing class. Originally developed as a more advanced successor to the Mosquito catamaran, the boat was engineered by Goodall Design Australia to prioritize extreme lightness and aerodynamic efficiency. With a rigged weight of just 105 kilograms, the Taipan 4.9 is significantly lighter than many of its contemporaries, such as the Hobie 16, and shares more design DNA with the elite A-Class catamarans. Constructed primarily in fiberglass/Kevlar foam sandwich by AHPC (and later Concept Fibres), the model was also available as a plywood kit for amateur builders, making it a versatile staple of the Australian off-the-beach racing scene.

Sailing Performance & Handling

The Taipan 4.9 is frequently described as a "purist’s" boat, characterized by its responsive, almost nervous energy on the water. Its handling is remarkably precise; the boat responds to minor tiller movements and weight shifts with immediate changes in direction and speed. Because of its low displacement-to-length ratio, it accelerates instantly in gusts and can often outpace 18-foot catamarans on upwind legs. According to editorial analysis from Multihulls World, the 4.9’s impeccable handling is a result of its refined hull shape and high-aspect rig.

The boat is unique in its "two-in-one" configuration: it can be sailed solo as a Cat-rigged boat (main only) or two-up as a Sloop-rigged boat (main and jib). In the Cat configuration, it is a demanding tactical platform for single-handed sailors, while the Sloop configuration turns it into a high-speed machine often used by parent/child or mixed-gender crews. The addition of an asymmetrical spinnaker in later years further increased its downwind performance, making it a foundation design for the modern Formula 16 (F16) class.

The Taipan 4.9’s cultural footprint is deeply embedded in the professional sailing world, notably through its association with Glenn Ashby, one of the most successful multihull sailors in history. Ashby’s early success in the Taipan class helped cement its reputation as a "breeding ground" for world-class talent. The Taipan Catamaran Association of Australia maintains a "Hall of Fame" that highlights the boat’s dominance in regional and national championships. The model is also recognized in design circles for being the direct predecessor to the AHPC Viper, a boat that went on to achieve global recognition in the international F16 circuit.

Known Issues & Buyer’s Checklist

When inspecting a pre-owned Taipan 4.9, the following technical areas require specific attention:

  • Beam Stiffness: The platform’s performance relies on its rigidity. Buyers should check the beam bolts and the molded beam pads for any play. Loose or poorly seated beams significantly degrade the boat's "snappy" feel and pointing ability.
  • Plywood Hull Integrity: For amateur-built wooden versions, a meticulous check for rot is essential, particularly around the chainplates, rudder gudgeons, and the junction between the deck and hulls.
  • Rudder Alignment: Precise alignment is critical for handling. The trailing edges of the rudders should be perfectly parallel (typically within a 3mm tolerance). Poor alignment often manifests as excessive "humming" or heavy weather helm at speed.
  • Rig Tension and Wing Mast: The 4.9 utilizes a sophisticated wing mast and diamond wire setup. Inspect the mast for any "permanent set" or bend and ensure the diamond tension remains high to prevent the mast from over-rotating or bowing under load.

Community & Resources

The boat is supported by a robust and active owner network. The primary resource for technical data, class rules, and tuning guides is the Taipan Catamaran Association of Australia (TCAA), which organizes national titles and maintains historical archives for the class. For technical parts and specialized gear, Goodall Design continues to provide legacy support for the 4.9, offering parts that are compatible with the original AHPC specifications.

The Verdict

The Taipan 4.9 remains a benchmark for lightweight catamaran design, offering a level of tactile feedback and speed that few modern boats can match at this size.

Pros:

  • Exceptional Power-to-Weight: Extremely light at 105kg, allowing for blistering acceleration.
  • Versatility: Can be effectively raced solo (Cat) or with a crew (Sloop).
  • Design Pedigree: Proven race-winning geometry from Greg Goodall.
  • Strong Community: Active Australian class association and available technical support.

Cons:

  • Technically Demanding: Not recommended as a first boat; requires sensitive handling and precise tuning.
  • Structural Fragility: Its lightweight construction (especially in plywood) is less "bulletproof" than rotomolded or heavy-glass production cats.
  • Niche Market: While legendary in Australia, it has a smaller international footprint compared to the F18 or Hobie classes.

Measurements

Construction & Hull

Construction Material
Fiberglass/Wood Composite
Hull Type
Catamaran Sailboat
Keel Type
Daggerboard
Ballast
-
Displacement
231 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
16.24 ft
Waterline Length (LWL)
-
Beam
7.68 ft
Draft
2.62 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
195 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
82.87
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
5.01
Hull Speed
— kn