Pacific Orca is a purpose-built heavy-lift jack-up vessel owned by Swire Pacific Offshore (SPO). The self-elevating, self-propelled vessel has been built for use in the offshore wind farm market. With carrying and installation capability of up to 12 wind turbine generators (WTG), each rated at 3.6MW, she is the biggest wind farm installation vessel (WIV) in the world. The vessel can be floated up to 56ft above the surface of the ocean using six jack-up legs fastened to the seabed. Each leg measures approximately 345ft in length.