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II G.R. Bowler, Inc. Specializing in LNG Vessel Automation Makinen, Group Vice President, Marine Division, when the second order was placed. "We have studied the specific require- ments of the LNG trade to determine the desired characteristics of the optimum propulsion plant, and we have now developed a number of attractive solu- tions." Dual-fuel engines have so far been successfully applied in eight onshore power plants and a number of marine installations, including two FPSOs and two offshore support vessels. LNG carri- er operators will be watching with inter- est when the first ship with Wartsila 50DF engines takes to the sea later this year. The basic propulsion solution for these LNG carriers uses dual-fuel engines for electric power generation. The electric power is supplied to an electric propul- sion system, fairly similar to the diesel- electric propulsion systems on modern cruise ships. The solution offers LNG carriers a number of significant advan- tages. Calculations from the engine manufac- turer show that the earnings of a 145,000 cu. m. dual-fuel electric LNG carrier sailing between the Middle East and Japan will be several millions of dollars per year higher than the annual earnings of a steam turbine powered ship of the same size. The Wartsila 50DF, derived from the Wartsila 46 diesel engine, is a true dual- fuel engine, using low-pressure natural gas as primary fuel. The engine can be run alternatively in gas mode or liquid fuel mode. It is also fully capable of switching over from gas to liquid fuel (marine diesel oil) automatically should the gas supply be interrupted, while con- tinuing to deliver full power. When run- ning on natural gas, ignition is triggered using a very small quantity of liquid fuel. Marine diesel oil can be used as a Marine Control Systems 5 ml yji 'iinnif ijhj a fjvw G.R. Bowler, Inc. 2261 Lake Rd, Ontario, NY 14519-9719 FAX 1.315 524.8753 Call 1.800 524.9570 Circle 268 on Reader Service Card the cost of mooring just went down REPLACING WIRE MOORING LINES WITH SAMSON'S Chantiers de I'Atlantique O1 ALSTOM HIGH PERFORMANCE SYNTHETIC ROPES WILL SAVE YOU MONEY In over five years of extensive field tests with one of the world's largest marine operations, Samson synthetic mooring lines have proven they reduce the cost of mooring operations. Mooring times went down by 66%. Service life was increased by 300%. Light weight means fewer crew were reguired for mooring, and injuries were significantly reduced. Eguipment damage from metal to metal contact, spooling trucks, and relubing were all eliminated. To find out more about how Samson can help reduce your mooring costs, call or visit our website: 1-800-227-7673 www.samsonrope.com san THE STRONGEST NAME IN ROPE on Reader Service Card
