Wärtsilä signed a contract for the design of a new diving support vessel (DSV) to be built for Subsea 7. The new VS 4725 DSV design was created by Wärtsilä Ship Design specifically for this vessel, which will be built at the Hyundai Heavy Industries (HHI) shipyard in Korea. The contract was signed with HHI in December, and the vessel is scheduled for delivery in 2015. The vessel is intended for North Sea diving operations on a year round basis. In customizing the design of such a complex vessel…