MV Cowal in 1954. She inaugurated the regular Wemyss Bay to Rothesay car ferry service, on 1 October 1954 and remained in the upper Clyde for her whole career. From 1957 the three "A, B, C" sisters were working interchangeably. In May 1970, "Cowal" inaugurated a short-lived seasonal Fairlie-Tarbert-Brodick service. When this ended in September 1971, "Cowal" operated between Largs and Millport, until displaced in March 1972 by the former Skye ferry on the quicker Largs to Cumbrae Slip run. With linkspans at Gourock and Dunoon, the hoist-loading "Bute" and "Cowal" were restricted to the Wemyss Bay to Rothesay crossing, where "Cowal"
Cowal of James VII, so the Campbells once again ultimately retained their lands. After the Jacobite rising of 1745 when James Francis Edward Stuart attempted to regain the throne, the lack of roads in the Highlands prevented the British army from advancing to quell areas of unrest. General Wade was tasked with implementing a programme to build military roads from north-central Scotland through the Highlands to the forts in the Great Glen. They were constructed by officers and soldiers. William Caulfeild succeeded Wade in 1740 and constructed the road from Dumbarton via Tarbet to Inveraray through the Cowal where it is