Uptrend for Wärtsilä Ship Designs


Wärtsilä Ship Designs get increasingly important for wind farm operations


Wärtsilä has been contracted to supply the ship design for the ‘Vestland Cygnus’, a Platform Supply Vessel (PSV) owned by Norway based Norside AS that is to be converted to serve as an offshore wind farm service vessel.

The conversion will take place at the Fjellstrand yard in Norway.  The contract with Wärtsilä was signed in October.

Features of redesign:

  • An accommodation module for 134 people
  • A 100 ton offshore crane with a range of 40 metres
  • A new footpath system for transferring personnel to offshore fixtures.
  • The vessel will have SPS (Special Purpose Ships) class notation.

Following completion of the rebuild project, the ‘Vestland Cygnus’, will transport service personnel to and from wind farms.

It will be operated by Vestland Offshore, a Norway based offshore vessel operator.  The conversion is scheduled to be completed by June 2016.

Mr. Ove Wilhelmsen, Managing Director, Wärtsilä Ship Design, Norway, said, “ We have developed several concepts for wind farm service vessels, both for newbuilds and conversion projects and our design is very suitable for this vessel’s new operational profile.  We have also worked closely with the Fjellstrand yard for many years on numerous projects and the cooperation between our companies is excellent”.  

Mr. Hans Martin Gravdal, owner of ‘Vestland Cygnus’, said, “The new design will enable the transportation and accommodation of a high number of people.  It is important that the vessel has very good stability, even in the most challenging sea and weather conditions, so that personnel can safely board rigs or wind mills.  We are confident that the Wärtsilä design meets all our requirements”.

The original ‘Vestland Cygnus’ design was supplied by Wärtsilä and the ship was delivered from the Fjellstrand yard in April 2015.  Wärtsilä also supplied a complete electric propulsion system based on the Wärtsilä Low Loss concept with four Wärtsilä 20 engines, as well as an integrated automation system.


Wärtsilä is a global leader in complete lifecycle power solutions for the marine and energy markets.  By emphasising technological innovation and total efficiency, Wärtsilä maximizes the environmental and economic performance of the vessels and power plants of its customers.

In 2014, Wärtsilä’s net sales totalled EUR 4.8 billion with approximately 17,700 employees.  The company has operations in more than 200 locations in nearly 70 countries around the world.  Wärtsilä is listed on the NASDAQ OMX Helsinki, Finland.

Source: Wärtsilä