four stroke engines Bergen-based package powers 28MW offshore vessel
An integrated design, engineering and equipment package from Rolls-Royce for an innovative offshore vessel project will include six diesel gensets based on the group’s Bergen B32:40 medium speed engine design. With a length of around 169m and a breadth of 28m, the Rolls-Royce UT 777 CD design vessel will be built in Japan by Kawasaki Heavy Industries for Norway’s Island Offshore, with delivery due in 2017. Operating experience from Island Wellserver, designed by Rolls-Royce
in 2005, will be applied to create a vessel capable of undertaking diverse subsea tasks such as top hole drilling, construction and inspection as well as maintenance and repair work in deep waters; it will also be adaptable for light well intervention. Accommodation for 91 personnel will be provided in the ICE 1B-class vessel.
A 27.9MW diesel-electric power station will embrace four gensets driven by nine- cylinder Bergen B32:40L9ACD engines, each developing 4,190kW at 720 rpm,
An artist’s impression of UT 777-design for Island Offshore subsea support
and two gensets driven by V12-cylinder B32:40V12ACD engines, each developing 5,587kW at 720 rpm. Electrical power for propulsion and manoeuvring will be fed to three azimuth thrusters at the stern and a pair of retractable azimuth thrusters at the bow. Rolls-Royce will also supply two Super Silent side thrusters for the vessel, which will have a DP3 dynamic positioning capability. • Island Offshore recently took delivery of Island Dawn, the third offour Rolls- Royce UT 717 CD platform supply vessels ordered from the Norwegian yard Vard Brevik. The 84.45m-long x 17m-wide PSV, with a deadweight of 3,800 tonnes and a deck capacity of 800m2, is also prepared for later duties as a standby/rescue vessel. Twin-screw propulsion is provided by two nine-cylinder Rolls-Royce Bergen C25:33 L9 medium speed engines, each rated at 2,880kW and arranged to drive a 2.9m-diameter Rolls-Royce CP propeller via a Rolls-Royce 750 AGHC-KP50H reduction gearbox equipped with a 1,920kW power take-off. The Rolls-Royce outfit also includes Kamewa Ulstein tunnel thrusters, mounted in pairs at bow and stern. Supporting the two 2,400 kVA shaft
alternators in supplying electrical power are a pair of gensets, each driven by a 398kW Scania DI 12 high speed engine.
DF engines for another green German ferry Growing interest in gas-fuelled propulsion in Europe for coastal and shortsea tonnage is underlined by German ferry operator Reederei Cassen Eils’ selection of a Wärtsilä 20DF propulsion package for a newbuilding from domestic yard Fr Fassmer. The vessel is due for service during the first half of 2015. The latest twin nine-cylinder dual-fuel medium speed engines, each rated at 1,665kW, will deliver a 5 per cent higher output than earlier versions of the 200mm-bore design as well as a 7 per cent reduction in fuel consumption in gas mode. Primarily operating on LNG, the ferry will be deployed daily between Cuxhaven and the
MaKing power for tugs and tankers Two 7,076 dwt product tankers completed by Damen Shipyards Bergum (DSB) in the Netherlands in June and December last year are sailing under the commercial management of the UK’s James Fisher Everard. King Fisher and Kestrel Fisher are the latest examples of the Damen Double Hull Oil Tanker 8000 design, which offers a cargo
www.mpropulsion.com
island of Helgoland on a route passing close to the Lower Saxon Wadden Sea national park: an environmentally sensitive UNESCO World Heritage-listed area in the south eastern part of the North Sea. “As the vessel must fulfil the IMO regulations regarding SOx and NOx emissions in the North Sea’s Emissions Control Area, its operations need to be ecologically friendly with the lowest possible emissions,” said Dr Bernhard Brons, chairman of AG Ems, parent company of Reederei Cassen Eils.
Each W20DF engine in the twin-screw propulsion plant will drive a 2.6m-diameter
capacity of 8,363m3.
Gasoline, diesel oil, lubrication oil and jet fuels will largely be transported in British, Continental, Scandinavian and Baltic waters by the 104.5m-long x 17m-wide tankers. A trials speed of 12.3 knots was achieved on the summer draught of 6.3m at 90 per cent maximum continuous rating by a
Wärtsilä CP propeller via a Wärtsilä gearbox equipped with a 700kW PTO/PTI facility. Wärtsilä will also supply the new ferry with its shipboard LNGPac fuel bunkering and supply system, incorporating a 53m3 LNG storage tank, along with related safety and automation systems. The group’s patented Cold Recovery system, exploiting the latent heat of LNG in the ferry’s air conditioning systems, will reduce the amount of electricity consumed by the cooling compressors. A conversion project booked in April 2013 saw Cassen Eils’ ferry Ostfriesland retrofitted by Wärtsilä to dual-fuel propulsion, facilitating service in similar environmentally sensitive waters.
propulsion plant based on an eight-cylinder MaK M25C engine (2,640kW at 750 rpm) driving a 3.85m-diameter CP propeller. The hulls were built by Damen Shipyards’ Galati facility in Romania and outfitted at the DSB yard in Harlingen.
• The most powerful tug in the Canadian registry entered service in December ›››
Marine Propulsion I April/May 2014 I 23
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