South Korean shipbuilder Daewoo Shipbuilding and Marine Engineering (DSME) has received a $635m order from a subsidiary of Atwood Oceanics for a fourth ultra-deepwater drillship.
Under the contract, DSME will also be responsible for the delivery of two blowout preventers (BOPs), as well as project management, drilling and handling tools and spares.
DSME is scheduled to deliver the drillship by 31 December 2015 and the vessel will be named Atwood Archer.
The new drillship will become the 17th mobile offshore drilling unit owned by Atwood Oceanics and will be identical to the previously ordered Advantage, Achiever and Admiral.
All four ships will be DP-3 dual derrick drillships and will be capable of operating in water depths up to 12,000ft, drilling to a depth of up to 40,000ft.
The order is the exercise of an option that was set to expire on 30 June 2013, and Atwood Archer now has a new option to order a fifth ultra-deepwater drillship at a similar cost to the Atwood Archer.
If the option is exercised, which requires commitment from the company by 31 March 2014, the fifth drillship is expected to be delivered in September 2016.
Atwood Achiever is scheduled to be delivered from the DSME shipyard in June 2014.