Rolls-Royce has received orders worth over $160 million to supply propulsion systems for offshore construction and drilling vessels. The ships will be built at shipyards in Asia for a range of ship owners including Sea Drill, Pacific Drilling, Noble, Ocean Rig and Pride. These vessels will carry out drilling operations in deep water oil and gas fields. Each ship will feature multiple thrusters, which will be used to propel the vessels to and from drill sites and to maintain their position during drilling operations. The orders announced today also include options to supply additional thrusters.