Drydocks World has won a contract to build a new state-of-the-art oil well intervention Compact Semi-Submersible (CSS) vessel, representing a third order from integrated energy industries service provider Hallin Marine. The vessel will cost a total of $110m. Designed by STX Canada Marine Inc, the diesel/electric CSS’s primary function is to facilitate repair and maintenance to an existing well, via chemical injection on braided lines, extending perforation tunnels and effectively maximizing and extending the productive life of the well.