Barge
The British river barge

In Great Britain a merchant barge was originally a flat bottomed merchant vessel for use on navigable rivers. Most of these barges had sails. For traffic on the River Severn the barge was described as: "The lesser sort are called barges and frigates, being from forty to sixty feet in length, having a single mast and square sail, and carrying from twenty to forty tons burthen." The larger vessels were called trows. On the River Irwell there was reference to barges passing below Barton Aqueduct with their mast and sails standing. Barges on the Thames were called west country barges.
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