Rowan Companies plc is a public limited company incorporated under the laws of England and Wales and listed on the NYSE. The terms "Rowan," "Rowan plc," "Company," "we," "us" and "our" are used to refer to Rowan plc and its consolidated subsidiaries, unless the context otherwise requires. Intercompany balances and transactions have been eliminated in consolidation.
We are a global provider of offshore contract drilling services to the oil and gas industry, with a focus on ultra-deepwater drillships and high-specification and premium jack-up rigs. Many of our high specification jack-up rigs are also rated for operating in harsh environments. Our fleet operates worldwide, including the US GOM, Mexico, Central and South America, the U.K. and Norwegian sectors of the North Sea, the Middle East and the Mediterranean Sea. We currently operate in three segments: Deepwater, Jack-ups and ARO, our 50/50 joint venture with Saudi Aramco. The Deepwater segment includes four ultra-deepwater drillships. The Jack-ups segment is composed of 21 self-elevating jack-up rigs and includes the impact of the various arrangements with ARO (see Note 4 of the "Consolidated Financial Statements" in Part II, Item 8 of this Annual Report for more information. The information discussed therein is incorporated by reference into this Part I, Item 1.) ARO currently owns a fleet of seven self-elevating jack-up rigs for operation in the Arabian Gulf for Saudi Aramco. ARO has plans to order up to 20 new jack-up rigs over the next 10 years.
As of February 13, 2019, the date of our most recent Fleet Status Report, two of our four drillships were contracted in the US GOM, one was contracted in Mexico and the remaining drillship was marketed without a contract in the US GOM. For our jack-up fleet, we had four rigs under contract in the North Sea, one rig under contract in the Mediterranean Sea, three under contract in Central and South America and two under contract in the US GOM. In the Middle East, we had nine jack-ups leased to ARO to fulfill nine, three-year contracts between Saudi Aramco and ARO, two of which are expected to commence in the first half of 2019. Additionally, we own two jack-up rigs which are cold stacked.