[Tagging] Mapping floating booms?

[Joseph Eisenberg]

A boom is a floating visual or physical barrier used across canals, rivers
and around harbours to delineate places where boats, canoes or swimmers
should not cross.

The wikipedia page isn't very good (it mostly focuses on historic chain
barriers rather than current floating booms), but has some description.: "
*boom* ... is an obstacle strung across a navigable stretch of water to
control or block navigation.
https://en.wikipedia.org/wiki/Boom_(navigational_barrier)
Also see https://en.wikipedia.org/wiki/Log_boom and
https://en.wikipedia.org/wiki/Boom_(containment) - two specialized type of
booms which stop floating logs, trash or oil.

Here are a few examples:

https://commons.wikimedia.org/wiki/File:Hydro_Tasmania_floating_safety_barrier.jpg

https://commons.wikimedia.org/wiki/File:Floating_boom_at_the_beach_in_Pattaya.jpg

https://commons.wikimedia.org/wiki/File:Floating_barrier_on_Ballona_Creek.jpg

Recently a user suggested mapping these as barrier=boom, and this has been
used about 30 times, however that tag has also been used a dozen times for
lift gates (also called a "boom" in some languages, eg:
https://commons.wikimedia.org/wiki/File:Bourke-Docker_Street_level_crossing_boom_gate.jpg
)

The tag man_made=boom is equally (un)common:
https://taginfo.openstreetmap.org/tags/man_made=boom

A somewhat more common option is waterway=floating_barrier which has been
used 104 times, mostly in England:
https://taginfo.openstreetmap.org/tags/waterway=floating_barrier - and
there are some uses of similar tags like waterway=barrier and
waterway=surface_barrier.

The most common current tag is the complicated
seamark:obstruction:category=boom
https://taginfo.openstreetmap.org/tags/seamark%3Aobstruction%3Acategory=boom
- there are 265 ways with it, mostly in the the Netherlands. I wouldn't
really recommend this tag since it is excessively complicated.

So, what's the best option? man_made=boom, barrier=boom,
waterway=floating_barrier?

- Joseph Eisenberg
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