Rolls-Royce will supply the motors that will power a new anchor handling tug supply vessel for Edison Chouest Offshore under a $30.7 million contract announced Wednesday.

The contract comprises Azimuth main propulsion, propulsion control systems, anchor winches and an anchor handling crane for the ship, according to Chouest, which is based in Cut Off. The contract includes an option to equip a second similar vessel.

The anchor handling tug supply vessel, or AHTS, was designed by Chouest's North American Shipbuilding in Cut Off. The boat will be built at Chouest's LaShip yard in Houma, and should be completed by the end of 2016.

The vessel will be designed and equipped to operate in Arctic waters, where air temperatures fall as low as minus 40.