The opportunity of a trip on the Waverley on the Clyde was one of the reasons for taking the tour. The ship is the last sea-going paddle steamer in the world. It turned out it was the last run on that particular route for the year so it was quite crowded but there's a quiet bar down below.
For more about trips on the Waverley see http://www.waverleyexcursions.co.uk/