Trimaran

 ( Boat Types ) 

Following the homebuilt movement, production models became available. Some trimarans in the are designed as "day-sailers" which can be transported on a road trailer. These include the original Farrier – Corsair folding trimarans, such as the F-27 Sport Cruiser – and original John Westell swing-wing folding trimaran (using the same folding system later adopted also on Quorning Dragonfly) and like trimarans. 20th century western-built trimarans typically did not use Austronesian rigging like tanja sail or crab claw sails. Instead they used a standard Bermuda rig. Trimarans were also typically wider. In addition, trimaran floats were much more buoyant than those of outrigger canoes, to support a large sailplan. This contributed to drag when heavily immersed, and their level of immersion indicates when to Reefing. Doran (1972) claimed that both the traditional double-outrigger vinta of the Philippines and the single-outrigger wa of the Caroline Islands were still faster than the western-style trimaran used at the time.

• Demountable fixed tubes that are assembled before launching.
• Telescoping tubes
• Hinge and latch system that allows the amas to fold over the main hull to reduce width for trailing.
• Vertical folding that lifts the amas upwards and over the main hull.
• Horizontal articulation that moves the amas forward or backwards at the same level as the hull.
• Horizontal folding of the amas towards the main hull.

Trimaran capsizes are more likely to be of the pitchpole type than a roll to one side due to their higher sideways stability and speeds. Capsized trimarans are harder to turn upright after they have turtled than monohull boats. While some capsized trimarans righted by sideways rotation may suffer heavy damage to mast and rigging, many modern and ancient trimarans are explicitly designed for this method of righting. Harnesses pulling on the stern toward the bow, or from the bow toward the stern of capsized trimarans have been shown to be able to successfully turn them end-over-end. Several design features reduce the chance of pitch-pole capsize; these include having wing nets with an open weave designed to reduce windage and decks and nets that shed water easily. The best way to avoid capsize is to reduce sail in heavy weather.

Francis Joyon and a crew of five in the maxi trimaran IDEC SPORT set the absolute (wind or mechanically powered) time for the fastest maritime circumnavigation, in 40 days 23 hours 30 minutes 30 seconds of sailing between Dec 2016 and Jan 2017. Their average speed was 26.85 knots (30.71 MPH) over a total distance of . In early 2020, the same boat won a race retracing the tea clipper route from Hong Kong to London in just under 32 days – one-third the time it took the clippers to sail the route.

Hydroptère, an experimental sailing hydrofoil trimaran, briefly reached Though it was first announced the ship reached 61 kn: «Pointe de l'Hydroptère à 61 noeuds» near Fos-sur-Mer, but capsized and turtled shortly thereafter., L'Hydroptère, January 14, 2009

The negative considerations for trimarans, compared with catamarans or monohulls are:

• A more complicated and consequently more expensive hull structure for the payload, making them more suited for low-density cargo or passengers.
• More complicated geometry and large size per unit of cargo carried, which makes docking more difficult than for a catamaran or monohull.

In 2005 Austal delivered the Benchijigua Express to Spanish ferry operator Fred Olsen, S.A. for service in the Canary Islands. Capable of carrying 1,280 passengers and 340 cars, or equivalents, at speeds up to 40 knots, this boat was the longest aluminum ship in the world at the time of delivery. A modern warship, the RV Triton was commissioned by British defence contractor QinetiQ in 2000. In October 2005, the United States Navy commissioned for evaluation the construction of a General Dynamics litoral combat ship trimaran designed and built by Austal.

The demand for high-speed ferries started in the late 1970s for ferries built mostly in Norway. Ultimately, two Australian shipyards came to prominence, Incat and Austal.

In 2010 Austal built the 102 metre Hull 270, although they were unable to find a buyer for the ship until it was sold to /ref> named Bajamar Express and Bañaderos Express /ref>

Littoral combat ships built by General Dynamics at Bath Iron Works are of a trimaran design. USS Independence (LCS-2) is the first of these ships. Littoral combat ships built by Lockheed Martin are of a monohull design.

First launched on August 31, 2012, at Bali Strait, 63M Carbon Fibre Composite Trimaran Fast Missile Boat (Indonesian: Kapal Cepat Rudal KCR) named Klewang-class fast attack craft (Klewang- means a traditional Indonesian single edge sword), was the first stealth trimaran of the Indonesian Navy built by North Sea Boats at Banyuwangi, East Java, Indonesia. Designed by New Zealand Naval Architects LOMOcean Marine this ship combined a number of existing advance technologies into a single, unique platform; a wave-piercer trimaran hull from, constructed exclusively of infused vinylester carbon fibre cored sandwich materials for all structural elements, with external "stealth" geometry and features intended to reduce detection. The KRI Klewang (625) caught fire because of an electrical short-circuit in the engine room during a maintenance period on September 28, 2012, and was a total loss.

43-meter Ocean Eagle trimarans from CMN wharf with design from Nigel Irens und Prolarge based on the Ocean Adventurer concept will provide coastal protection for Mozambique.

• List of multihulls
• Bangka
• Catamaran
• Multihull
• Sailing
• Turtling (sailing)

• Jim Howard, Charles J. Doane (2025). 9781574090932, Sheridan House. . ISBN 9781574090932
• C. A. Marchaj (2025). 9781888671186, Tiller Pub. . ISBN 9781888671186

• A sailing community for enthusiasts of small trimarans