Hi C. Unan,

I am not sure if you mean the narrowboats that go on the canals – probably from the start of the industrial revolution. Originally horsedrawn and later with engines or boats like the Norfolk Wherry which was a sailing cargo ship that worked along the rivers of that region. The Wherries were able to drop their single mast to go under a bridge and then put it up again after – some were about 13metres long (I think)

Here is a google search for the narrowboats – you can see there are some “Associations” – they are most likely to be useful.
Narrowboats

and the Norfolk Wherrys (which were only one type of many traditional rivercraft)

Best wishes
Michael

I am very much interested with model boat building. Now I am planning to build old river boats particularly in England. Will you please so kind to help me where I can find them.

yours,

C Unan