Christmas Island
none
Clipperton Island
none
Cocos (Keeling) Islands
none
Colombia
18,140 km (navigable by river boats) (April 1996)
Comoros
none
Congo, Democratic Republic of the
15,000 km (including the Congo and
its tributaries, and unconnected lakes)
Congo, Republic of the
1,120 km
note: the Congo and Ubangi (Oubangui) rivers provide 1,120 km of
commercially navigable water transport; other rivers are used for
local traffic only
Cook Islands
none
Coral Sea Islands
none
Costa Rica
730 km (seasonally navigable)