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Public-images-osm logo.svg NSIW
Classification of Chinese Inland Waterways
Group: restrictions
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
Status: in use

NSIW (Navigation standard of inland waterway) is a classification for Chinese inland waterways:


NSIW-Class Tonnage (t) min. Depth (m) Width of the straight section (m) min. Height (m)
Double line
I 3000 3.5-4.0 250 18
II 2000 2.6-3.0 190 10
III 1000 2.0-2.4 110 10
IV 500 1.6-1.9 90 8
V 300 1.3-1.6 70 8
VI 100 1.0-1.2 30 4.5
VII 50 0.7-0.9 24 3.5


Inland waterways are  navigable if one of theses tags are used :

Navigable waterways are rendered in dark green on the openriverboatmap map.

An other example: European Navigable Waterways

See also