ftpv -‐ fast trimaran patrol vessels - jec...
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FTPV -‐ Fast Trimaran Patrol Vessels
This project is leading edge, and will be one of the largest full carbon fibre composite mul=-‐hull vessels built to date. It will create considerable interest and aAen=on in the interna=onal media, and is expected to speed the acceptance and use of medium size commercial and patrol vessels built from composite materials, instead of steel or aluminium.
John Ivar Allan Lundin President Director North Sea Boats PT. Lundin Industry Invest
This poster describes features of a new offshore patrol vessel project that incorporates a wave piercing trimaran hull design. It is being built en=rely from carbon fibre, with a PVC foam sandwich core, and vinylester resin, using the vacuum resin infusion produc=on method. It has been designed and simulated and tank tested, with the result being a hull form that is one of the most efficient tested to date. This prototype vessel has been under construc=on for 2 years, and was launched in Indonesia on the 31st August 2012.
At 1200 hours on Friday, the 31st of August, 2012, North Sea Boats Ltd successfully launched one of the most innovaDve warships in the world into the straits between East Java and Bali, at Banyuwangi, in the Republic of Indonesia. Measuring 63m in overall length, the vessel will be named KRI Klewang -‐ aOer a tradiDonal Indonesian single edged sword. It combines a number of exisDng advanced technologies into a single, unique plaRorm; a wave-‐piercer trimaran hull form, constructed exclusively of infused vinylester carbon fibre cored sandwich materials for all structural elements, with external “Stealth” geometry and features intended to reduce detecDon. The result of a 24 month research, design and development collaboraDon with New Zealand naval architects, LOMOcean Design Ltd, the ship represents a significant step forward in the use of advanced warship building technologies in countries outside of Europe and the United States. Offering stability and shallow draO, the vessel is designed for patrolling the li\orals. The hull shape is intended to permit high speeds to be maintained and thus maximize crew operaDonal capability in the short, steep seas characterisDc of the coastline around the Indonesian Archipelago. The design borrows elements from previous trimarans from the same designer, including the 24m Earthrace (later Ady Gil), holder of the record for the fastest circumnavigaDon of the globe by a power boat. The underwater secDons have been opDmized for extended range at fast patrol speeds; the length, transverse and longitudinal posiDons and immersion of each of the three hulls have been carefully tailored for least resistance using both slender body analysis and towing tank tesDng. Powering and propulsion is courtesty of mulDple MAN V12 diesel engines, coupled to MJP 550 water jets, located in both the centre hull and each of the two side hulls for maximum propulsive thrust and manoeuverability. The use of carbon foam sandwich composites on this scale in naval applicaDon is unprecedented outside of Scandinavia and is representaDve of the current state of the art in both mariDme composites structural engineering and producDon technology. The structural design was subject to third party approval by Germanischer Lloyd in Hamburg, using design and approval methodologies tailored specifically for the unusual geometry of a large, wave-‐piercing trimaran. The construcDon medium offers mulDple benefits, including reduced weight (laminated carbon fibre has a density nearly half that of aluminium alloys), reduced maintenance (carbon composites cannot corrode and exhibit extremely high faDgue limits), tailorability of radar cross secDon (true flat panel geometry can be a\ained due to no distorDon during assembly), extremely high geometrical accuracy (permits as-‐built hull shape to remain faithful to theoreDcal opDmums), nil magneDc signature, reduced thermal and acousDc signatures etc.
It has “Stealth” design characterisDcs, and incorporates features that minimises detecDon by reducing Radar, Infra-‐Red, AcousDc and MagneDc signatures. Weaponry, including missiles and naval guns, and the ships 11 m high-‐speed RHIB, are discreetly concealed or shaped to meld into the superstructure profile.
ConstrucDon is from strong and highly durable, lightweight composite carbon fibre sandwich, uDlising vinylester modified epoxy resin and the vacuum resin infusion process. Thus ensuring improved fuel efficiency, and reduced operaDonal, maintenance, and life cycle costs. If equipped with water jets the draO is just 1.2 m. Allowing operaDons both offshore and close inshore, with less risk of damage to the propulsion system from floaDng debris or grounding. Well suited for SAR, coast guard and commercial roles . The FTPV is a development of the proven 24 m Earthrace trimaran that set the current Earthrace/UIM World Record circumnavigaDon. Acknowlgements : Designers : Lomocean Design Limited PO Box 147 027 Auckland 1144 New Zealand.
Tank Tes=ng : Conducted at Australian MariDme College. Tasmania, Australia
Features -‐ Full carbon fibre composite. -‐ Carbon composite engineering approved by Germanischer Lloyd. -‐ Highly seaworthy and stable plaRorm. -‐ Minimal draO for inshore and shallow water operaDons. -‐ Long range capability -‐ Low detecDon signatures -‐ Lightweight 230 tonne displacement. -‐ Lower fuel consumpDon. -‐ Lower maintenance and life cycle costs.
www.JECcomposites.com
63m Trimaran Patrol Vessel
63m Trimaran Patrol Vessel