New York-listed Transocean has fixed a drillship for two years as it announced the completion of a bond refinancing.

The Switzerland-based owner said the 63,000-dwt ultra-deepwater unit Deepwater Invictus (built 2014) was awarded a contract with three one-year options by a subsidiary of BHP.

The firm part of the deal is worth $106m, beginning in the second quarter of 2018.