Sevan Drilling owns the Sevan Driller, Sevan Brasil, and Sevan Louisiana, and manages operations through Seadrill. The fourth rig, Sevan Developer, is ready for delivery and remains in the Cosco shipyard under a deferral delivery agreement.
All four rigs are based on the same Sevan 650 design. The Group has experienced an improved construction performance due to the learning curve from construction and operating the rigs since 2010. This has been used to make modifications to the already successful Sevan rig design, enhancing the construction process, and cutting certain construction costs.