<div dir="ltr"><div>I asked this question on the cranes talk page <a href="https://wiki.openstreetmap.org/wiki/Talk:Tag:man_made%3Dcrane#Shiplift.3F">https://wiki.openstreetmap.org/wiki/Talk:Tag:man_made%3Dcrane#Shiplift.3F</a> a week or so ago but no response as yet, so repeating it here.</div><div></div><div>
<p>Would a shiplift <a rel="nofollow" class="external gmail-free" href="https://en.wikipedia.org/wiki/Shiplift">https://en.wikipedia.org/wiki/Shiplift</a> classify as a crane?<br>
</p><p>The one that I spotted which made me wonder is at <a class="external gmail-free" href="https://www.openstreetmap.org/edit#map=18/-12.45943/130.82380">https://www.openstreetmap.org/edit#map=18/-12.45943/130.82380</a>
(edit mode in Bing). Here, the lifting platform goes down a ramp till
it's underwater, the vessel moves over the platform which then lifts it, the platform comes back up the ramp, travels
sideways till it lines up with the correct "parking" bay, then forward /
back into that bay & lowers the vessel onto a prepared framework
for storage / maintenance.</p><p>Specifications I have seen say that it can lift 750 tonnes, & the patrol boats that are probably visible in that imagery are 56 m long, so, while quite small in regard to general shipping, it's no slouch!</p><p>So, it doesn't lift, it pushes upwards - is it a crane?</p><p>If not, what do we call it, or just a man_made=ship_lift by itself?<br></p><p>The crane page also makes reference to travel-lifts <a href="https://wiki.openstreetmap.org/wiki/Tag:crane:type%3Dtravel_lift">https://wiki.openstreetmap.org/wiki/Tag:crane:type%3Dtravel_lift</a>, which it says "is a mobile crane for transporting ships". However, the talk page has raised some concerns about them as well: <a href="https://wiki.openstreetmap.org/wiki/Talk:Tag:man_made%3Dcrane#What_is_a_travel_lift.3F">https://wiki.openstreetmap.org/wiki/Talk:Tag:man_made%3Dcrane#What_is_a_travel_lift.3F</a></p><p></p><p>I've had a quick look at only 6 or so of them via Overpass & those ones were all OK as only mapped as a node on the spot where it actually lifts boats out of the water, not on a way or area.</p><p>Are we OK with following the suggestion noted there & including to only map these as a node?</p><p></p>
</div><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr">Thanks<div><br></div><div>Graeme</div></div></div></div></div></div></div></div>