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Public-images-osm logo.svg CEMT
ECMT member countries.svg
Classification of European Inland Waterways Show/edit corresponding data item.
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: de facto

CEMT is a classification for European inland waterways and extends waterway=* (axis of river, canal, fairway). CEMT=* is used on the European waterways that make up its water-based transportation network.

CEMT=* should only be used in correspondence with the official CEMT classification of the waterway. For waterways that lack a CEMT classification, see the other water-based transportation tags in the access tree.


List of all European inland waterways: WikiProject_Europe/E-waterway_network


Seamark / iENC
... : category
CEMT-Class/Value max. Length max. Width max. Draught Height Remark
1 0 - - - - inofficial, used for recreational boating fairways
2 I 38,50 5,05 1,8-2,2 4 of regional importance
3 II 50-55 6,6 2,5 4-5 of regional importance
4 III 67-80 8,2 2,5 4-5 of regional importance
5 IV 80-85 9,5 2,5 5,25-7 of international importance
6 Va 95-110 11,4 2,5-4,5 5,25-7 of international importance
7 Vb 172-185 11,4 2,5-4,5 5,25-9,1 of international importance
8 VIa 95-110 22,8 2,5-4,5 7-9,1 of international importance
9 VIb 185-195 22,8 2,5-4,5 7-9,1 of international importance
10 VIc 193-200 34,2 2,5-4,5 9,1 of international importance
11 VII 195/285 34,2 2,5-4,5 9,1 of international importance

The unofficial classificiation CEMT=0 is often used when source data (such as government provided data on waterways) marks this as a waterway suitable for general recreational use. CEMT=0 implies motorboat=yes and canoe=yes, but also tends to strongly imply ship=no.


The presence of CEMT=* with value of I or higher, implies that an inland waterway is  navigable (within the size and draught constraints shown in the table above) for the purposes of water transport.

CEMT=* is not the only tag that can indicate navigability on waterways. Outside of Europe, ship=* may be used instead for shipping links. For waterways that lack a CEMT=* tag, boat=* and its descendants can be used to indicate navigability by smaller vessels.



worth digging deeper

See also