Oil rig explodes off Louisiana coast; 11 missing
Deepwater Horizon was built in 2001 by Hyundai Heavy Industries at the shipyard in Ulsan, South Korea.
The dynamically positioned Deepwater Horizon can operate in waters up to 10,000 feet and can drill to 30,000 feet.
The current dayrate on the rig is believed to be around $500,000.
Deepwater Horizon cost an estimated $350 million when delivered but replacement costs for a similar unit today could approach double that amount.
Published: 21 April 2010 21:21 GMT | Last updated: 21 April 2010 23:24 GMT
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