Hayfin Capital Management and Transocean Ltd have been confirmed as the buyers of the abandoned drilling rig newbuilding West Rigel.

The US drilling rig owner said it purchased a 33.3% interest in the semi-submersible through a joint venture with funds managed by Hayfin.

Transocean has initially chipped in $83m of the rig’s $500m price tag with an additional investment of $83m to be made at a later date.