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. Two Anchor Handling Tug Supply Vessels Under a contract from Aker Yards AS Trading, Wärtsilä will supply equipment for two Anchor Handling Tug Supply Vessels (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 7680kW 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 1200kW output and a single 1500kW retractable azimuth thruster.