Global offshore drilling giant Noble expects to take a hit to its fourth-quarter earnings primarily as a result of mechanical issues on the jack-up drilling rig Noble Regina Allen, which is awaiting repairs at a port in Trinidad.

The rig was operating off the east coast of Trinidad in mid December when it developed a serious structural issue while preparing to be moved.

The structural integrity of one of its legs was compromised, so all crew were evacuated from the jack-up after confirming the rig’s watertight integrity.