A trimaran or double-outrigger is a multihull boat that comprises a main hull and two smaller outrigger hulls or floats which are attached to the main hull with lateral beams.

X3k trimaran. Two anti-ship missiles and some machine-guns will be carried. The Klewang model number X3K was a 63m 207ft long wave-piercing trimaran launched by the Indonesian navy in 20121 It was reportedly destroyed by fire. With its four 1800-horsepower engines and wave-piercing hull it can keep up with smaller boats and operate in water as shallow as 6 feet deep.

It incorporates a radical wave piercing hull form for improved seaworthiness and stability and has been built from full carbon fibre composite materials utilising the vacuum infusion process and vinylester resin. The X3Ks are being built in Indonesia. Over a period of 24 months.

Two anti-ship missiles and some machine-guns will be carried. Others are ferries or warshipsThey originated from the traditional double-outrigger hulls of the Austronesian cultures of Maritime. The X3K is a radical design in many ways.

The X3K concept draws from the LOMOcean Design. The goal was to build a very stealthy high-speed multi-role missile boat that could dominate the complex littorals around Indonesia while still being affordable to procure and operate. The X3K concept draws from the LOMOcean Designs 24-meter Earthrace later Ady Gil holder of the record for the fastest circumnavigation of the globe by a power boat.

The main hull is long and thin while the two other hulls are short and at the rear of the boat. The construction of a ship coded X3K and class Trimaran costs around Rp. The main hull is long and thin while the two other hulls are short and at the rear of the boat.

Cruising speed is 28 kilometers an hour. Most modern trimarans are sailing yachts designed for recreation or racing. The X3K was built by Indonesian-based Swedish boat builder North Sea Boats and designed in part.