The record depth of 10011 feet set in 2003 by discoverer deep sea for chevron of the U S Gulf of Mexico was shattered by 183 feet by Dhirbai deepwater KG2 drill ship. It has set this new record of the Indian coast by drilling under water at a depth of 10194 feet. The vessel was contracted to work for 5 years around the Indian coastline. The vessel is designed to work at depths of up to 35000 feet. Presently it is equipped to drill wells up to 12000 feet.

Source: http://www.marinelink.com/news/transocean-waterdepth337970.aspx