United Kingdom:
3,200 km
United States:
41,009 km
note: navigable inland channels, exclusive of the Great Lakes
Uruguay:
1,600 km ( used by coastal and shallow-draft river craft)
Uzbekistan:
1,100 km (1990)
Vanuatu:
none
Venezuela:
7,100 km
note: Rio Orinoco and Lago de Maracaibo accept oceangoing vessels
Vietnam:
17,702 km
note: more than 5,149 km are navigable at all times by vessels up
to 1.8 m draft