Caspian Sunrise plc is a United Kingdom-based oil and gas exploration and production company. The Company owns and operates the Caspian Explorer, a drilling vessel specifically designed for operation in the shallow northern Caspian Sea. The Company also has its own drilling company, which on occasion works on projects. The Company operates through four segments: Oil & Gas assets, Drilling services by CTS, Drilling services by Caspian Explorer, and Corporate allocated. Oil & Gas assets segment is engaged in the oil exploration and production.