Maybe following the same scheme as for highways:

 

waterway=navigable_channel (for way along the middle of the channel)

area:waterway=navigable_channel (for area bound by buoys, with an intersecting 
node at both ends between the area and the middle line way)

 

From: [email protected] <[email protected]> 
Sent: Sunday, 1 July 2018 11:25
To: 'Tag discussion, strategy and related tools' <[email protected]>
Subject: Re: [Tagging] nautical channels

 

I think it’s slightly different.

 

For canoe routes, there is generally no infrastructure along the route.

 

While navigable channels are marked with buoys, which makes them closer to a 
“highway” on land than a route. So I think it’s something that belongs in the 
waterway namespace.

 

If navigable channel is the correct nautical term, then the obvious would be 
waterway=navigable_channel

 

The real question becomes: tagging as a way in the middle of the channel? 
Tagging as an area (by mapping the buoys as seamarks, then connecting them to 
form an area)? Both? Either?

 

From: Graeme Fitzpatrick <[email protected] <mailto:[email protected]> 
> 
Sent: Sunday, 1 July 2018 11:10
To: Tag discussion, strategy and related tools <[email protected] 
<mailto:[email protected]> >
Subject: Re: [Tagging] nautical channels

 

& as I've just mentioned on the Canoe Route thread, we're discussing two things 
that are pretty well the same!

 

https://lists.openstreetmap.org/pipermail/tagging/2018-June/037677.html

 

https://lists.openstreetmap.org/pipermail/tagging/2018-July/037729.html

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