Built in 2000 in South Korea, she is owned by Transocean, registered in Vanuatu, and currently leased to Petronas at the rate of $140,000 per day for drilling operations in Malaysia.

[4] She was designed by Reading & Bates RBS-8M and built by Hyundai Heavy Industries in 2000 at the Ulsan shipyard in South Korea.

[5] In 2000, Deepwater Nautilus set the world water-depth record for an offshore drilling rig operating in moored configuration at 7,785 feet (2,373 m) at the Alaminos Canyon block 557 in the United States sector of the Gulf of Mexico.

[7] On March 6, 2002, she drilled a well in water depth of 8,009 feet (2,441 m) at the Great White field (Alaminos Canyon block 857).

[6] In March 2009, Deepwater Nautilus discovered oil at the Appomattox prospect in Mississippi Canyon blocks 391 and 392.