First MaK Dual-fuel Marine Diesel Engine Ships Out for Japan

By George Backwell at July 05, 2013 23:41
Filed Under: Fuels & Lubes, Marine Diesel Engines, Shipyards

The first MaK dual-fuel marine diesel engine has been shipped out of the MaK Rostock, Gerrmany factory, announce Caterpillar Marine Power Systems, destined for the first of a new generation of AIDA cruise ships under construction by Mitsubishi Heavy Industries (MHI) at its Nagasaki Shipyard & Machinery Works.

MaK M 46 DF Marine Diesel Engine: Photo credit: Caterpillar

Upon arrival the new engine will be placed in the hull of the AIDA cruise ship now under construction (due for delivery in March 2015) as the first of two vessels ordered by the Costa Group member company. These luxury 124,500 gross tonnage cruise ships will have accommodation for around 3,300 passengers, and will be the largest ever constructed for AIDA Cruises.

With a bore of 460 mm and stroke of 610, the M 46 DF engine is suitable for electric drive propulsion systems as well as mechanical propulsion systems. It has been designed to allow retrofitting of current M 43 C engines (three of which will also power the cruise liner).

Although designed for unlimited operation on LNG, marine diesel oil (MDO) and heavy fuel oil (HFO), the engine manufacturers say that the M 46 DF will reach maximum efficiency in gas mode, in which their new engine is designed to provide industry-leading fuel consumption as well as compliance with IMO III and EPA Tier 4 regulations.

AIDA Cruises ‘New Generation’ Cruise Ships

New Generation AIDA Cruise Ship: Rendering courtesy of MHI

The new cruise ships on order by AIDA (the keel plate of the first of them was ceremonially cut recently in the shipyard) will be equipped with many advanced environmental technologies, say the shipbuilders, including installation of the "Mitsubishi Air Lubrication System" (MALS).  This MHI proprietary technology, is already proven to reduce fuel consumption and carbon dioxide (CO2) emissions through the steady application of a layer of air bubbles blown along the bottom of the vessel's underwater hull form. MALS is expected to reduce fuel consumption in the new ship by approximately 7%.

Research in the arcane science of fluid dynamics has revealed that blowing that interposing layer of air bubbles between a ship’s underwater hull and surrounding seawater reduces hull – sea water frictional resistance, a theory now brought to practical application by MHI after Research and Development then extensive sea trials. It will be the world’s first installation of the MALS technology in a cruise ship.



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