Dual fuel option, common-rail engines for Scandinavian ferries
Two new cruise ferries destined for the Danish subsidiary of Norwegian operator Fjord Line will each have a MAN medium speed propulsion package.
MAN Diesel & Turbo says the order represents a considerable success in a difficult market. Under the deal, Norwegian shipbuilder, Bergen Group Fosen has ordered eight common-rail-based 10L32/44CR main engines, along with six L21/31 auxiliary generating-sets and four Renk gearboxes for the two new ferries to be operated by Fjord Line Danmark. MAN says that the main engines could optionally be retrofitted to dual-fuel operation, subject to completion of development of this version. The engines are said to have been selected for fuel efficiency and low emissions.
Both ferries will have the capacity to carry up to 1,500 passengers and 600 vehicles, and will offer daily sailings on services between Norway and Denmark. Hulls will be constructed by Bergen Group’s Polish partner, Stocznia Gdansk, while final completion, assembly and interior work will be carried out by Bergen Group Fosen.
Tier II approval
The latest version of the MAN 20-cylinder 28/33D engine recently passed a series of tests at the company’s St Nazaire, France works, and was awarded type approval by DNV. The approval covers the DNV Rules for the classification of ships as well as for high-speed light craft and naval surface-craft. Approved ratings are 9,100 kW at 1,000 rpm for 100% MCR and an additional 10% overload capacity for one hour every six hours of 10,000 kW at 1,032 rpm.
A number of measures have been incorporated to allow the engine to meet IMO and EPA Tier II emission standards, including a new TCA33 turbocharger. The first production engines are scheduled for delivery in autumn 2010, and approval from other major classification societies is expected soon.
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