Hi! I'd like to prepare the import of data of the "List of Lights" (marine lights, necessary for sea charts and navigation). According to the OSM-Wiki/Imports I shall post this here and describe the import in short.
The original data source is publicly downloadable from here: http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/NIMA_LOL/Pub110/Pub110bk.pdf I am not an expert in legal issues but as far as I understand the copyright note on the title page of these documents it is allowed to used them. Maybe somebody with more legal background could help me checking this copyright. What I further did is that I already extracted all data from those documents and prepared it for OSM import by using the OpenSeamap data scheme (this mainly is 'seamark:*=*') The result contains roughly about 45000 nodes which are distributed all over the world (except USA, yet). After import, there will be duplicates, approximately 2000 (according to my current investigation, but I will work this out more precisely). I think, that an automated matching of duplicate nodes will be impossible because the List of Lights contains objects at much higher density which makes script-based distinct matching impossible. Best regards, Bernhard
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