For the height (the difference of water level from the top and the bottom basins), height, lock:height, lock_height and maxheight are used. height is more often used and simple :-)
- CEMT key
- Classification of European Inland Waterways on wikipedia.
Caution : in the english page, there is more classification RA, RB, RC, RD and one VIc "3×2 convoy"
- phone, contact:phone, lock:phone, waterway:lock:phone ?
- vhf, VHF, lock:VHF_channel, waterway:vhf_channel, vhf_channel, VHF_channel, VHF-channel, lock:channel, contact:vhf ?
- website, url ?
I suggest :
- vhf_channel (like OpenSeaMap harbors)
These are where there is a dry slope, usually with rollers (hence the name) which can be used by small boats and canoes to bypass the lock - for example, as shown at. Sometimes a small part of the river stream flows through them, as at Sunbury Lock.
There doesn't currently seem to be a convention for mapping these - they can be part of a through route which could be useful for navigation in appropriate craft. For the moment I've started to tag the river route with lock=* and the actual slope with leisure=slipway, as described on User:Threefoursixninefour#Waterway_locks. Are there any suggestions for a better system? Threefoursixninefour (talk) 12:33, 12 July 2018 (UTC)