Thre are, of course, both narrow, 6' 10" and broad canals up to 14' wide. The Leeds & Liverpool, Calder & Hebble and Huudersfield Broad are wide beam and the Huddersfiels Narrow obviously narrow. Further south, narrow canals are much more common. In the north the canal/river navigations wer very much for commercial movement of aggregates, flor and grain and coal. Mostly wide beam. They really are a wonder of victorian engineering to read about. And there are a total of some 2000 miles available for navigation! Not bad methinks! All I amsure Alan will also eagerly confirm.I am aware he also had a long period of navigation these wonderful waterways.