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    Wärtsilä to supply energy efficient propulsion systems to Aker Yards

    Equipment & Technology // November 5, 2008

    Wärtsilä has signed major contracts with Aker Yards Søviknes and Aker Yards AS Trading - the recently established project development arms of the Aker Yards Group - for the supply of propulsion equipment for five offshore vessel projects being built in Norway, India and Brazil.

    The orders cover the supply of a total of 15 Wärtsilä engines, as well as power generation, automation, and other ancillary equipment.

    For a PSV being built at the Aker Yards facility in Söviknes, Norway, Wärtsilä will supply three six-cylinder Wärtsilä 34DF engines. This is the first marine application order for this successful multi-fuel engine that is able to run on either marine diesel oil, heavy fuel oil or natural gas.
    Commenting on the series of new orders, Sigurd Viseth, Sales Manager, Wärtsilä Ship Power, said: "These orders underpin the strong relationship we have enjoyed with Aker Yards Group for many years. Both companies are committed to providing their customers with the most efficient marine solutions, and this is evidenced by Aker's selection of the Wärtsilä 34DF engine. It is the ideal choice for this particular vessel, and we anticipate that it will become as established in marine applications as it already is in land-based power plants."
    Based on the proven Wärtsilä 32 engine, and incorporating the operational experience gained from the Wärtsilä 32DF dual-fuel engine, the Wärtsilä 34DF has a 30 per cent higher output than its predecessor. It also incorporates a number of new features including double wall gas piping, built-in lubricating oil system components, and a UNIC engine control system. In all, it represents a more energy efficient propulsion solution for the offshore market.

    Wärtsilä will supply the Søviknes yard with three six-cylinder in-line Wärtsilä 34DF dual-fuel engines, each rated at 2,610kW. These will be installed in a LNG-fuelled PSV being built at the yard.
    Wärtsilä will also supply this vessel with the complete power management system, the main generator sets, frequency converters, propulsion motors, and Low Loss Concept (LLC) transformers.

    The LLC concept was developed to negate the need for large transformers and their associated components and utilities in the propulsion line. The concept, which has already been successfully applied in the offshore and passenger ship segments, has been proven to save fuel and installation costs, to reduce the amount of space required for component installation, and to deliver greater redundancy in an electrical propulsion system.

    Under a contract from Aker Yards AS Trading, Wärtsilä will supply equipment for two AHTS that Brazil's Aker Promar Shipyard will build. Each of the AHTS vessels will be fitted with a hybrid propulsion system consisting of two 7,680kW Wärtsilä 16V32 prime movers, reduction gearboxes with single input/single output, shafting and two controllable pitch propellers.
    Wärtsilä will also provide thrust to the vessels by way of two electrically-driven side thrusters, each with 1,200kW output and a single 1,500kW retractable azimuth thruster. One 1,200kW thruster and a single 1,500kW retractable azimuth thruster will also be delivered.

    The engine builder will also supply Aker Yards AS Trading with four Wärtsilä 9L20 diesel gensets for each of two PSVs being built at the Cochin Shipyard in India. The ships will be deployed in Asian waters after their delivery to Norwegian ship owner Sigba. 

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