British Trader

British Trader has been noted as a technologically advanced double hull LNG carriers, designed to meet world wide trading on the ship/shore compatibility and fuel tank capacity, double hulled cargo area with four cargo tanks constructed to GazTransport & Technigaz Mark III cargo containment system — for the carriage of LNG cargoes at cryogenic temperature (-163°C) and atmospheric pressure. The hull structure, which has been designed in accordance with the requirements of LR's ShipRight, has a fatigue life designed for a period of no less than 40 years. This vessel, with GTT Mark-III containment system, has been built for British owner, BP Shipping, can carry 138,200 cu. m. LNG in its specialized cargo tanks encased with primary membrane of corrugated SUS 304L stainless steel plates, 1.2 mm thick, and secondary membrane of triplex glass wool. The insulation is of 270 mm thick reinforced polyurethane foam. This system makes it possible to restrict boil-off gas rate to 0.15 percent of the total cargo volume per day. Two cargo pumps of 1,700 cu. m./hr. capacity each can be used to completely discharge the cargo tanks within duration of 12 hours after the tanks have been pre-cooled by LNG spray. Two 8,000 cu. m./hr. low duty compressors and two 26,000 cu. m./hr high duty compressors are arranged in the compressor room on the trunk deck and other equipment includes four 50 cu. m./hr. spray pump, 550 cu./m./hr. emergency cargo pump, two 23,400 kg/hr. warming-up heater, 23,100 kg/hr. LNG vaporizer, 7,000 kg/hr. forcing vaporizer, 14,000 N cu. m./hr. inert gas generator and two 90 N cu. m./hr. nitrogen generator. The propulsion system consists of cross-compound steam turbine that delivers MCR of 39,500 shp and NCR of 33,580 shp (85 percent of MCR) at 85.3 rpm, driving six-bladed fixed-pitch propellers to give service speed of 20.1 knots with 15 percent sea margin. The vessel is provided with one Kawasaki make bowthruster of 2,500 kW.

Main Particulars Flag Isle of Man Classification Lloyd's Register of Shipping Length, (o.a.) 915 ft. (278.8 m) Length, (b.p.) 873 ft. (266 m) Breadth, (molded) 140 ft. (42.6 m) Depth, (molded) 85 ft. (26 m) Draft, (scantling) 40 ft. (12.3 m) Draft, (design) 37 ft. (11.3 m) Displacement 107,300 at 12.3 m Lightweight 29,800 DWT, (scantling) 77,500 DWT, (design) 68,100 Speed, service 20.1 knot at 85 percent MCR Steam turbine Kawasaki UA-400, 29,500 kW Gearboxes Kawasaki Propellers Mitsubishi Bowthrusters Kawasaki, 2,500 kW Diesel-driven alternators, (engine) Wärtsilä; (alternator), ABB Cargo cranes MacGregor Mooring equipment Friedrich Kocks Lifesaving equipment Schat-Harding Fire detection system Consilium Marine Radars KMSS Satellite navigation Leica Computers Kongsberg Simrad Cargo capacity Liquid volume 138,200 cu. m. Heavy oil 7,700 cu. m. Diesel oil 400 cu. m. Water ballast 54,800 cu. m. Daily fuel consumption 170.9 MT/day