leaving Caledonian Isles to carry all the traffic and run additional sailings at night. In August 2015, it was announced that two new ferries would be built at Ferguson Marine Engineering at Port Glasgow on the Clyde. The much delayed is expected to serve Arran from 2022, replacing and allowing Caledonian Isles to become the second ferry on the Ardrossan-Brodick and the Ardrossan-Campbeltown crossings. Before heading to Birkenhead for her overhaul in January 2018, she called at Campbeltown to test the berth. The last sailing from the old Brodick pier was the 0820 to Ardrossan on Tuesday 20 March 2018. Caledonian Isles started operating from the new Brodick ferry terminal later that day. The new terminal has two ferry berths: the west side berth and the east side berth. On 16 March 2019 Caledonian Isles rammed the pier at Brodick after her bow thrusters failed, causing significant damage to her bow visor. During her repairs, took up service on the Arran crossing, while operated a shuttle service from Claonaig to Lochranza to clear the backlog of traffic unable to board the smaller Hebridean Isles at Ardrossan. In October 2019, Caledonian Isles was diverted to Troon as the linkspans in both Ardrossan and Gourock - the vessel's usual port of diversion - failed, resulting in vehicles being unable to board or alight from the ferry there. During this period, operated additional services from Claonaig to Lochranza. Bad weather prevented Caledonian Isles from berthing in Troon, reducing the service to passenger-only from Ardrossan. During her annual overhaul in 2022, unexpected steelworks were required, delaying the vessel's return to service. She was relieved by , thereby causing knock-on cancellations to services to South Uist, where the latter vessel was due to relieve next. In April 2022, Caledonian Isles suffered a port engine failure and struck the breakwater. She was removed from service and relieved by Isle of Arran, with Loch Riddon providing additional capacity on the Lochranza - Claonaig route alongside Catriona. This caused significant disruption to the Arran service, with all vehicle bookings cancelled and a significant reduction in capacity. On Friday 22nd April, CalMac announced that Caledonian Isles would remain out of service for at least three weeks whilst undergoing repairs in Troon. Caledonian Isles departed for annual overhaul in early January 2023. Initially scheduled to return to service on 2nd February, she experienced significant delays during overhaul due to additional