Large model of a 'narrow boat' for canals. This model is typical of the standard canal boats used on the 'narrow boat' canals of England. In the past each boat was towed by a horse, but now a number work in pairs, one fitted with a screw propeller driven by an internal combustion engine, towing another unfitted boat or "buttie". Scale 1:12

The form and dimensions of the standard type of canal barge known as a narrow-boat has been determined by the size of the locks on the canals which were built in England during the second half of the 18th century.

The design of the craft has not greatly changed over the past two hundred years although the materials used in their construction have altered. The early boats were built entirely of oak and elm and many wooden narrow-boats are still in use. At a later date, boats of composite construction with iron or steel sides and wood bottoms were introduced. More recently an all-steel, welded construction has been used.

In the past each narrow-boat was towed by a horse, but later boats were fitted with steam-power. In the early years of the 20th century, semi-diesel engines were frequently installed and now most motor narrow-boats are powered by full-diesel engines.

The boats are often worked in pairs; one, power-driven, towing another, known as a butty-boat, not fitted with an engine.

The traditional style of painting, shown on the model, appears to have originated about the time of the opening of the Bridgwater Canal in 1761 and has remained unchanged to this day.