Design and propulsion for 'efficient' PSV

The new VS 485 Mk III claims high performance in the areas of fuel-efficiency and safety The new VS 485 Mk III claims high performance in the areas of fuel-efficiency and safety
Industry Database

Wärtsilä has announced the award of a contract to supply the design and equipment for a new Platform Supply Vessel, to be built at Norwegian shipyard Hellesøy for Vestland Offshore.

The ship will be to the latest VS485 Mk3 design, described by Wärtsilä Ship Design as a state-of-the art high efficiency vessel. The vessel is 85.6m long, has a breadth of 20m, a cargo deck area of about 1,000m2, and 5,000dwt capacity at 7m. It is scheduled for 2012 delivery.

The latest version of the VS 485 features an efficiency-optimised hull design for greater efficiency, to fulfil the criteria for the highest possible environmental rating number (ERN) of, which Wärtsilä says represents the vessel's capability for maintaining its position and normal operations under certain weather conditions.

The power and propulsion system is based on the company's patented low-loss-concept, with four 9L20 diesel-electric prime movers. The system is claimed to provide both additional safety and extra reliability for continuous operation, in various failure modes. The Wärtsilä NOx Reducer will ensure low emissions. The scope of supply also includes the electric propulsion system, power management system, and an integrated automation system.

"Vestland Offshore is building a fleet of vessels that emphasise energy efficiency, safety, reliability, and environmental sustainability. These are all major focus areas for today's oil industry, and Wärtsilä's designs are at the forefront of achieving these aims," says Tor Østervold, chairman of the board of Vestland Offshore.

"Over the years, Wärtsilä has gained considerable experience in the development of energy efficient vessels. In particular, the optimisation of hull lines has been a major focus area of this development work. By combining this know-how with our overall expertise and experience, new design optimisation tools, and state-of-the-art power and propulsion solutions, we have been able to produce a highly efficient portfolio of offshore service vessel designs," says Johannes Eldøy, director, project development for Wärtsilä Ship Design.

Wärtsilä has had a long relationship with the Hellesøy Verft yard, and this will be the seventh VS 485 it has built, although the first of the new Mk III design.

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