Since her entry into service,
Loch Shira has only operated on the service between Largs and Cumbrae. Upon entry into service, she replaced , allowing the latter to move to service between
Barra and
Eriskay in the
Outer Hebrides. She operates alongside during the summer, and has been relieved by a number of vessels during her winter overhaul, including and . In 2024, at a time when flood protection work in Millport meant a lot of heavy traffic, the hinges to both ramps on
Loch Shira were damaged beyond repair, forcing her withdrawal from service on 5 April. CalMac attributed the problem to unidentified "large commercial vehicles" exceeding the ramp design loading, and replacement parts had to be made in Poland to get regulatory approval. During her absence, a reduced service was provided by various vessels, including
Loch Tarbert, , , and . After initially docking at the James Watt Dock in Greenock, the ship was moved to Troon. By 24 May the parts were delivered and work put in hand, followed by "extensive sea and berthing trials across the Clyde area before a planned return to service on Wednesday August 7." By then there had been further problems with other vessel breakdowns, leading to three hour queues for the ferry at Largs. That afternoon,
Loch Shira returned to service after four months and two days absence.
Loch Tarbert was removed from service for ramp repairs, and
Isle of Cumbrae gave short term cover. ==References==