The Ben my Chree will be taking part in berthing trials in Scotland this week.
CalMac is conducting the trials on its Arran route as it considers chartering the Steam Packet vessel.
She'll try berthing at Troon and Brodick as CalMac faces a difficult time with some of its vessels out of service and others undergoing maintenance.
CalMac's chief executive Duncan Mackison says a full charter would be subject to agreement from a number of parties.
Gales put two ferry sailings at risk tonight
Should the Island throw a birthday party for Barry Gibb?
Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night
Mountain Road unlikely to open before Monday
Yellow warning for freezing temperatures tonight
School bangers night called off
AK47 and Uzi handed in to police