<div dir="ltr">Certainly, the portion of a canoe trail that crosses a lake or pond is indefinite. I assume also that any part that travels along a river would tend to follow its centerline. Such portions of a route can also be tagged as indefinite=yes but what do people think about the canoe route as waterway=fairway idea?<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 12, 2019 at 9:12 PM Kevin Kenny <<a href="mailto:kevin.b.kenny@gmail.com" target="_blank">kevin.b.kenny@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Tue, Feb 12, 2019 at 7:49 AM Dave Swarthout <<a href="mailto:daveswarthout@gmail.com" target="_blank">daveswarthout@gmail.com</a>> wrote:<br>
><br>
> The seamark definition in the supplied link is very general. I cannot see how anyone could misinterpret this use of either waterway=fairway or seamark:type=fairway unless they are specialists, in which case I'm sure a response will be forthcoming. Regardless, I agree that the conflict note should be removed.<br>
><br>
> I would love to see the tag waterway=fairway accepted but I also hope we can somehow make it applicable to canoe routes as well. A canoe route is not as well defined as a shipping channel, for example, but it does have a preferred path and well-defined put-in and take-out points. It does not, however, typically have marker buoys or lights. If we removed that requirement or made it optional, that would save a lot of energy in trying to get a modification approved later. So, instead of saying: " A navigable route in a lake or sea marked by buoys", it might say, "A navigable route in a lake or sea usually marked by buoys. In the case of a fairway describing a canoe route, there would typically be no buoys."<br>
><br>
> Opinions? I think the fairway tag fits so well it might be appropriated for use on such routes anyway.<br>
<br>
We recently were also discussing the idea of having an<br>
'indefinite=yes' tag to mark the indefiniite portion of the closed set<br>
of ways that encloses a peninsula, isthmus, bay, strait, or similar<br>
form. Is the on-water portion of a canoe route an indefinite way? (I<br>
would imagine that portages are usually quite definite, but I've<br>
carried on a few where the mud was only slightly too thick to pole or<br>
paddle through.)<br>
<br>
It appears that the nearest thing on the seamark schema is<br>
<a href="https://wiki.openstreetmap.org/wiki/Seamarks/Leading_Lines" rel="noreferrer" target="_blank">https://wiki.openstreetmap.org/wiki/Seamarks/Leading_Lines</a> - and it<br>
states specifically that the centreline of a fairway should not be<br>
mapped. In the nautical world, there are usually well-defined and<br>
charted limits of safe navigation, so that a fairway will be bounded<br>
by clearing lines. In the canoe world, it is for the boatman to decide<br>
where safe water is at the lake's current height or the river's<br>
current rate of flow.<br>
<br>
I'd imagine that a canoe route that follows a river would ordinarily<br>
share the river "centerline" or Thalweg with the 'river' object,<br>
except for where it comes ashore to portage or is plotted in a<br>
specific track around obstacles. On a paddle-and-portage from lake to<br>
lake, the waterway portions are quite indefinite indeed!<br>
</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail-m_8113697835436379970gmail_signature"><div dir="ltr">Dave Swarthout<br>Homer, Alaska<br>Chiang Mai, Thailand<br>Travel Blog at <a href="http://dswarthout.blogspot.com" target="_blank">http://dswarthout.blogspot.com</a></div></div>