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Wärtsilä has been contracted to supply the engine fora Korean government Incheon Port Authority (IPA) Guideship. The Government of the Republic of Korea has specified environmental sustainability as a priority for this ship. The 200-gt Guideship is to be designed and coordinated by the Samsung Heavy Industries (SHI) in Korea on behalf of the state-owned Incheon Port Authority (IPA). The in-line Wärtsilä 20DF dual- fuelled engine with its 9 cylinders ordered for this ves- sel can operate on either gas or liquid fuel oils, and in gas mode is capable of meeting the most stringent emission regulations. The Guideship will operate in the port of Incheon and taking onboard passengers forvarious routings. The environmental benefit will be granted as the dual-fuel engine will have low emis- sions, in gas mode being compliant to Tier III regula- tions. The IPAs Guideship, which is a green ship, concept is tremendously important as it clearly repre-sents an industry trend. The fuel flexibility that our DF engines offer enables not only environmental sustain- ability, but fuel cost savings as well since these engines can operate on a wide range of fuels,? said Aaron Bres- nahan, Vice President, Wärtsilä Ship Power, Specials. Wärtsiläs dual-fuel technology incorporates two separate fuel injection systems. When operating on gas, the electronically controlled common-rail pilot fuel injection system injects a very small amount of liquid fuel only. The conventional system is used when the DF engine is operated on standard liquid marinefuels. The switch between fuels can be made automat- ically and without loss of power. The order was placed with Wärtsilä in October 2011, and the ship is scheduled to be in operation in De-cember 2012.www.wartsila.com Vessel Facts: 200G/T Harbour Master vessel Length, o.a. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38m Breadth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8m Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.8m Draft (design) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.2 m Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 knots April 2012www.marinelink.com 81ZF Marine Provides Propulsion Systems for New RV ZF Marine was a major propulsion system supplier to the newly launched R/V Sea Scout (featured in full on page 10 of this edition). Sea Scout, built by All American Marine in Bellingham, WA, is believed to be the first catamaran featuring quad propeller propulsion. The vessel ? owned and operated by C&C Technologies, Inc. of Lafayette, La. ? will be used for various shallow and deep water survey ac- tivities as well as autonomous underwater vehicle op- erations. The catamaran hull design was a departure for this traditionally monohull vessel operator. Tekn- icraft Design Ltd. was charged with designing a ves- sel that could run efficiently at both high and low speeds for extended periods of time. As a result, a unique propulsion system was specified for the ves- sel, one that would enable the vessel to transit to site more quickly and stay on site longer. All American Marine turned to ZF Marine to help make this unique and complex propulsion system a reality. The vessel is equipped with two ZF 3055A transmissions mated to the two specified Caterpillar C32 main engines and two ZF 550V transmissions mated to two smaller Caterpillar C18s. The four power packages are completed with shafting, Shaft Brakes (on the C18 systems), bearings, and custom propellers all supplied by ZF Marine. All four propulsion systems are controlled by two sets of ZF SmartCommand control systems, one setfor each of the vessels propulsion systems. To min- imize transit time to the research site, the power of all four engines is employed, giving the vessel a top service speed of 26 knots. When the vessel arrives on site, the large engines are shut down, and the vessel runs on the two smaller power packages that employ trolling valves. The trolling valves combined with SmartCommands Au- toTroll functionality enables the crew to set exact vessel speeds - down to individual shaft rotations. Autotroll can be used for extended periods of time during survey operations without risk of damage to the transmissions. This feature will be extremely useful in helping perform research activities on board the vessel. TECHNICALPROPULSION UPDATES Wärtsilä dual-fuel technology selected forSouth Korean Green Ship Project (Photo courtesy Samsung)
