Tag:seamark:distance_mark:category=board
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 seamark:distance_mark:category = board
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| Description |
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The distance measured from an origin on a waterway. 
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| Group: marine navigation |
| Used on these elements |
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| Status: de facto |
| Tools for this tag |
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A point at which a distance from an origin along a feature is given for information and which is marked by a board.
How to map the board
Set a node 
at the board and add
- seamark:type=distance_mark
- seamark:distance_mark:category=board
- seamark:distance_mark:distance=* - number
- seamark:distance_mark:units=kilometres/hectometres
