MV Cowal crew accommodation was below the bridge and at the stern. She was fitted with electric hoists and side-ramps to allow the loading of vehicles from conventional piers and at any state of tide. The 14-ton cargo lift had space for five average cars, which were turned on two 14-foot turntables on the lift and a further one at the front of the "garage". An aft cargo hold had two 7-ton derricks for cargo handling. These were removed in 1958 and the hold plated over, to provide additional car deck area. MV "Cowal" entered service on the Gourock to Dunoon crossing
MV Cowal the last vessel to receive the new CalMac livery, retaining the vivid CSP yellow funnel until 1974. After 24 years' service, she was laid up in East India Harbour, Greenock from early June 1977. Surviving a galley-fire on 9 June, she was moved to the James Watt Dock in 1978 and offered for sale. Increasingly forlorn and "cannibalised" for parts to keep "Arran" running, "Cowal" was finally sold to Phetouris Ferries in Greece on 5 January 1979, and left under tow for Perama on 15 May. Despite the tow parting in the Bay of Biscay, she arrived in Piraeus, and