An electronic control issue put one of Caledonian MacBrayne’s Rothesay-Wemyss Bay ferries out of action on Monday.
MV Bute remained tied up at the western end of Rothesay pier from the start of service, leaving her younger sister, MV Argyle, to handle all the vehicular and passenger traffic alone.
A CalMac spokesman said: “A control card was changed to resolve a controls issue but a set up procedure needed to be followed according to the manufacturer’s instructions.”
Following successful sea trials, the normal timetable resumed with the 3pm sailing from Rothesay.
Though Monday was the first weekday of the summer school holidays in Argyll and Bute, MV Argyle was able to handle the traffic alone without major delays.
MV Bute’s electronic hiccups came on the eighth anniversary of her official naming ceremony after her journey from her Polish birthplace in the summer of 2005.