Prosafe said its fleet utilisation rate in the final quarter of 2015 rose by 62%.
Both the Safe Concordia and the Safe Caledonia were fully contracted in the quarter while the Safe Boreas was on contract in Norway until mid-December.
The company said the Regalia was on contract in the UK until late November will the Safe Bristolia was idle in the final three months of the year.
The rig is now in a yard in Gdansk, Poland, where it will undertake a special periodic survey.
Prosafe said the Jasminia remained off-hire in the quarter and preparations are being made to relocate Jasminia to a lay-up location.
The contract of Safe Hibernia has been extended until the end of the first quarter of 2016.
While the Safe Britannia ended its contract at end of December 2015, Prosafe said the vessel remains in “operational readiness” in anticipation of new assignments.
In the final quarter of 2015 a termination fee of $4million was paid relating to the planned towage of Safe Zephyrus, which is scheduled for delivery at the end of January 2016.
The final delivery instalment of the Safe Zephyrus will be reduced by $30million.