MAN powers new Spanish Ro-Ro

04 May 2010
View of the engine room aboard the José María Entrecanales showing two of the MAN 9L48/60B main engines

View of the engine room aboard the José María Entrecanales showing two of the MAN 9L48/60B main engines

MAN Diesel & Turbo supplied the main and auxiliary engines for the 10,140 dwt ‘José María Entrecanales’, a new roll-on/roll-off cargo vessel.

Navantia, the Spanish shipbuilder, recently completed the José María Entrecanales, a ro-ro vessel, at its Bahía de Cádiz facility in south-western Spain. Built for Spanish shipping line  Acciona Transmediterránea, the ship is powered by four MAN 9L48/60B main engines and three MAN 8L21/31 auxiliary engines.

Navantia is currently finishing a second ro-ro vessel for Acciona Transmediterránea, the Superfast-Baleares whose delivery is planned for May 2010 with the same engine configuration.

Acciona Transmediterránea is a division of the Acciona group and is the main Spanish shipping line as well as a major player in the European market and, last year, carried 3.3 million passengers, 778,000 vehicles and 5.8 million lane metres of cargo. The two sisterships are the biggest in the Spanish market in terms of ro-ro cargo capacity and speed.

The 209m long, 26.5m wide José María Entrecanales is powered by four nine-cylinder MAN 48/60B main engines, each delivering 10,800kW at 500 rpm, and provide a maximum speed of 26 knots. The 48/60 series has been redesigned recently with a focus on further improving performance mainly as a result of a higher-pressure injection in the cylinder head providing improved atomisation and better combustion, ultimately reducing both fuel consumption and emission levels. The cylinder head also contains a system for automatically adjusting injection timing (VIT) to minimise NOx emissions.

The TCA axial-flow turbocharger that MAN Diesel & Turbo initially introduced to the market in 2001 also plays a vital role in the success of the 48/60B engine and the José María Entrecanales has integrated the TCA66 model into its propulsion system. The turbocharger’s components have been optimised with regard to flow control and stress reduction through 3D-modelling, CFD and FEM calculations, resulting in highly resistant turbine blades. In addition, the removal of the turbocharger’s damping wire has also improved efficiency and facilitates maintenance.

Another new design feature is the incorporation of high-performance thrust bearings and floating bushes to minimise mechanical losses and improve turbine performance. In addition, inspection of the thrust bearing no longer requires removal of the shaft.

The new ro-ro cargo vessel features three eight-cylinder, auxiliary MAN L21/31 engines, delivering 1,935kW per engine at 1,000 rpm and characterised by a pipe-less design. This includes a front-end box housing cooling-water pumps, thermostatic valves, fuel-oil and lube-oil pumps, a lube-oil cooler and a lubricating-oil filter.

The newbuilding is now operating on the Barcelona – Alicante - Las Palmas de Gran Canaria (Canary Islands) - Santa Cruz de Tenerife – Agadir (Morocco) – Barcelona route. As such, the new vessel reflects the need for a design able to cope with the demanding nature of a route that requires a significant cruising speed to complete the weekly round-trip of 1,500 nautical miles.

Links to related companies and recent articles ...

MAN Diesel A/S

view more