So late as the year 1807 the mail bags between Waterford and Clonmel were carried in a common cart and there was no public mode of conveyance between Carrick-on-Suir and Waterford but passage boats, the chief of which is well remembered as Tom Morrissey’s boat. These dropped from one town to the other as the tide served, fare fourpence a head, distance twelve miles, time occupied seven hours.
George Lewis Smyth Ireland: Historical and Statistical Vol II Whittaker and Co, London 1847, Chapter 14
Irish waterways history 