Charter hire of 1 (one) no. Anchor Moored Drillship or Semi-submersible Drilling Unit along with equipment and Marine Logistics for drilling, testing and abandonment of exploratory well(s) in water depths up to 450 m with drilling depth capability up to minimum 5000 m in the East Coast of India for a firm well (of approximate seven (07) months duration), with a provision for an optional well (of approximate seven (07) months duration).