South Georgia and the South Sandwich Islands
none
Spain
1,045 km (of minor economic importance)
Spratly Islands
none
Sri Lanka
430 km (navigable by shallow-draft craft)
Sudan
5,310 km
Suriname
1,200 km
note: most important means of transport; oceangoing vessels with
drafts ranging up to 7 m can navigate many of the principal waterways
Svalbard
none
Swaziland
none
Sweden
2,052 km
note: navigable to small steamers and barges
Switzerland
65 km
note: The Rhine carries heavy traffic on the Basel-Rheinfelden and
Schaffhausen-Bodensee stretches; there are also 12 navigable lakes