Tub boat

A tub boat was a type of unpowered cargo boat used on a number of the early English and German canals. The English boats were typically 6 m (19.7 ft) long and 2 m (6.6 ft) wide and generally carried 3 long tons (3.0 t; 3.4 short tons) to 5 long tons (5.1 t; 5.6 short tons) of cargo, though some extra deep ones could carry up to 8 long tons (8.1 t; 9.0 short tons). They are also called compartment boats or container boats.