Kraken 18

Last updated
Kraken 18 [1]
Development
Designer Lock Crowther [1] [2]
Location Australia [2]
Year ca. early 1960s
Role day racer [1]
Boat
Crew 2 [1]
Hull
Type Open trimaran [1]
Construction Two layers of 1/12" veneer cold-moulded over a simple male mold. [1]
LOA 18 ft (5.5 m) [1]
Beam 11 ft (3.4 m) [1]
Hull appendages
Keel/board type centreboard [1]
Rig
Rig type Fractional Bermuda or Marconi rig [1]
Sails
Upwind sail area

227 sq ft (21.1 m2) (sloop rig - racing) [1]

167 sq ft (15.5 m2) (small headsail) [1]
Total sail area 227 sq ft (21.1 m2) [1]

Kraken 18 was a day racing trimaran sailboat designed by Lock Crowther in the wake of his successful Bunyip 20 design, [1] [2] as a scaled-down version of the earlier Kraken 25 with similar performance. [3] Its smaller size and folding beams made it more practical and led to its greater success. [3]

Trimaran triple-hulled boat

A trimaran is a multihull boat that comprises a main hull and two smaller outrigger hulls which are attached to the main hull with lateral beams. Most trimarans are sailing yachts designed for recreation or racing; others are ferries or warships.

Sailboat boat propelled partly or entirely by sails

A sailboat or sailing boat is a boat propelled partly or entirely by sails smaller than a sailing ship. Distinctions in what constitutes a sailing boat and ship vary by region and maritime culture.

Lock Crowther was an Australian multihull sailboat designer. He grew up in Bairnsdale in the East Gippsland region of Victoria. Though his first name was Lachlan by birth, he insisted on being called Lock or Lockie.

Advertised as "a slightly faster, more attractive version of the Bunyip 20 with round bilge hulls", [1] it shared an identical rig with the Bunyip 20 [1] but was 2 ft (0.61 m) shorter. [1]

Bunyip 20 was a day racing trimaran sailboat designed and built by Lock Crowther and his family in 1959, while he was still a teenager. It was named after the Australian mythical creature.

It was accepted as a class by the Victoria branch of Trimaran Association of Australia, making it the first one design trimaran class in Australian history. [3]

See also

Kraken 25 was a day racing trimaran sailboat designed by Lock Crowther in the wake of his successful Bunyip 20 design.

Kraken 40 is a trimaran designed by Lock Crowther in Australia and first built in 1970.

The Trimaran Yacht Club of Victoria was a club in Victoria, Australia, for persons interested in trimaran sailboats.

Related Research Articles

Multihull ship type

A multihull is a ship or boat with more than one hull, whereas a vessel with a single hull is a monohull.

Hobie Cat

The Hobie Cat is a small sailing catamaran manufactured by the Hobie Cat Company. Hobie's line of products ranges from surfboards to catamaran sailboats to kayaks and stand-up paddle boards, though the Hobie Cat Company is most famous around the world for its catamarans. Hobie also designed a very successful monohull, the Hobie 33.

Sailing hydrofoil

A sailing hydrofoil, hydrofoil sailboat, or hydrosail is a sailboat with wing-like foils mounted under the hull. As the craft increases its speed the hydrofoils lift the hull up and out of the water, greatly reducing wetted area, resulting in decreased drag and increased speed. A sailing hydrofoil can achieve speeds exceeding twice the wind speed.

Astus 16.1

The Astus 16.1 is a 16 ft (5.1m) trimaran dinghy aimed at family day sailing. Its design has been optimised for simplicity of use: the traditional centreboard on the main hull has been replaced by foils built in each float.

Astus 20.1

The Astus 20.1, built by Astusboats, is a 20 ft (6.1m) trimaran dinghy aimed at family day sailing, though its cabin offers basic cruising capability. Its multihull design offers speed and stability.

Astus 14.1 trimaran dinghy

The Astus 14.1 is a 14 ft (4.18m) trimaran dinghy aimed at recreational sailing and racing. The trimaran design is unusual for a boat of this size but is said to combine the features of other types of design: pointing ability of a monohull dinghy, reaching ability of a catamaran, and planing ability of a skiff. The stability provided by the floats makes the boat accessible to beginners and single-handed racers.

Dragonfly Trimarans is a line of trimaran sailboats built by the Quorning Boats shipyard in Skærbækvej, near Fredericia, Denmark.55°31′11.97″N9°38′8.08″E

Floats are airtight hollow structures, similar to pressure vessels, designed to provide buoyancy in water. Their principal applications are in watercraft hulls and aircraft floats, floating pier and pontoon bridge construction, and marine engineering applications such as salvage.

Telstar trimarans is a line of trimarans most recently built by the Performance Cruising Inc shipyard in Annapolis, Maryland.

Farrier Marine is a catamaran and trimaran manufacturer based in Christchurch, New Zealand.

Trio was an historic 20 ft (6.1 m) trimaran sailboat derived from design by Lock Crowther and built by Howard Stephenson in 1962 using the hull of an Austral 20.

Kraken 33 Mk IV was a 4-5 berth ocean racing trimaran designed by Lock Crowther in Australia. It was apparently first built in the 1960s but was advertised in to the 1970s.

The Ocean Bird is a class of trimaran sailboat designed by John Westell and produced by Honnor Marine Ltd. at Totnes, Teignmouth in the 1970s, featuring fold-in lateral floats on a webless steel-beam frame chosen to provide stability against heeling, yet allow a compact footprint in harbour.

F-31 Sport Cruiser Sailboat class

The F-31 Sport Cruiser is a family of American trailerable trimaran sailboats, that was designed by New Zealander Ian Farrier and first built in 1991.

References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Scanned specification brochure for Kraken 18 / Kraken 25 / Bunyip 20.
  2. 1 2 3 "Crowther Design". Multihull Maven.
  3. 1 2 3 Andrew Griffiths. "The Historic Lock Crowther Kraken & Bunyip Open Trimarans". Small Trimarans. The Kraken 18 was perhaps the most successful of the three designs, performance was said to be almost as good as the larger boat and its smaller size combined with folding cross beams made it more practical for the average owner. It was accepted as a class by the Victoria branch of Trimaran Association of Australia making it the first one design trimaran class in Australia history


This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.