Slovakia
172 km (on Danube River) (2004)
Spain
1,045 km (2003)
Sri Lanka
160 km (primarily on rivers in southwest) (2004)
Sudan
4,068 km (1,723 km open year round on White and Blue Nile
rivers) (2004)
Suriname
1,200 km (most navigable by ships with drafts up to 7 m)
(2003)
Switzerland
65 km
note: Rhine River between Basel-Rheinfelden and
Schaffhausen-Bodensee, some canals, and 12 navigable lakes (2003)
Syria
900 km (not economically significant) (2002)
Tajikistan
200 km (along Vakhsh River) (2003)
Tanzania
Lake Tanganyika, Lake Victoria, and Lake Nyasa principal
avenues of commerce with neighboring countries; rivers not navigable
(2004)
Thailand 4,000 km note: 3,701 km navigable by boats with drafts up to 0.9 m (2003)