The Pioneering Spirit is the earth's biggest heavy-lift construction vessel, installing oil pipelines in the world's deepest waters and featuring state-of-the-art thrusters and mammoth lifting beams. It is the world's largest vessel ever constructed, in terms of its gross tonnage (403,342 gt), breadth (123.75 m / 406 ft.), and displacement (900,000 t). The twin-hulled ship performs single-lift installation and decommissioning of large offshore oil and gas platforms up to 48,000 tons, plus installation of subsea, record-weight oil and gas pipelines. The vessel commenced offshore operations in August of 2016.