Vantage Drilling Company is a holding and offshore drilling company focused on operating a fleet of modern and specification drilling units. The Company's principal business is to contract drilling units, related equipment and work crews, primarily on a dayrate basis to drill oil and natural gas wells for its customers. It also provides construction supervision services for drilling units. Through its fleet of drilling units, it provides offshore contract drilling services. It provides contract drilling services with different types of modern, high-specification MODUs, including jackup rigs and drillships, and in different geographic regions. Its customers are primarily multinational oil and natural gas companies, Government owned oil and natural gas companies and independent oil and natural gas producers. A jackup rig is a mobile, self-elevating drilling platform equipped with legs and Drillships are self-propelled, positioned and suited for drilling in remote locations.