from Glasgow to the Isle of Arran

As will become obvious, the west highlands is a land of waterways. We left Glasgow, were lost only once (in Greenock), drove south to Ardrossan, and then, crossed the Firth of Clyde on one of the many ferries owned by Caledonian McBrayne. And a very efficient ferry system it is, given that its crews are faced with multiple tourists driving rental cars "on the wrong side of the road", and perhaps, totally unfamiliar with this whole 'ferry thing.'

The Clyde river flows through Glasgow and Greenock. "Firth" means 'an arm of the sea', or an 'estuary', and is related to Norway's "Fjord".