Daewoo Shipbuilding and Marine Engineering of Korea has ordered four common-rail 12V48/60CR Tier-II propulsion engines from MAN Diesel and Turbo. The prime movers will power a new Ro-Pax ferry for Tunisian ship owner COTUNAV (Compagnie Tunisienne de Navigation).
The ferry will have a capacity of 3,200 passengers and 1,060 vehicles, and a top speed of 27.5 knots. At 210 metres by 30 metres, the vessel will be the world's largest ferry and contain a shopping centre, restaurants, swimming pool and multiple entertainment facilities.
Delivery is due in the first half of 2012. The newbuilding will reinforce COTUNAV's existing main routes between Tunisia, Italy and France.
The common-rail engines have an output of 14,400kW each and represent the cutting edge of MAN Diesel and Turbo technology.
The 48/60CR injection system uses the latest common-rail technology allowing independent setting of injection timing, duration and pressure for each cylinder. This flexibility allows optimisation of the 48/60CR's fuel consumption, NOx and smoke emissions at any point on its operating profile, especially at part-load.
The common-rail system is based on an intelligently designed safety concept that features screened or double-wall high-pressure pipes, and flow-limiting valves to prevent uncontrolled injection.
The system has redundant high-pressure pumps as well as twin-type pressure and speed sensors to ensure engine operation, even in the event of failures.
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