OpenSeaMap/List of Lights Import
List of Lights Data Import
This page is intended to describe the all relevant aspects of the data import of the world wide List of Lights.
The data is usually available in printed books but is published under public domain licences by the US National Geospatial-Intelligence Agency.
The data covers the whole world except the USA coastline and is published as PDF documents and can be downloaded at the following links:
- Pub.110, Greenland, E coast of N and S America
- Pub.111, W coast of N and S America, Pacific Ocean, Australia
- Pub.112, E coast of Asia, Indian Ocean, E coast of Africa
- Pub.113, W coast of Africa, Mediterenean Sea
- Pub.114, British Islands, North Sea
- Pub.115, Norway, Iceland, Antarctic Ocean
- Pub.116, Baltic Sea
Marine sea marks own a large set of attributes which describe the function and purpose of it. Those attributes are such as light characteristics, the shape and color of the object, the position of it, and many more. Thus, Manual tagging is prone to errors. All attributes are extracted from the official lists as explained above, hence, they are highly accurate. Unfortunately, data accuracy in respect to the position is not more than 185m because geographic coordinates of the original lists are just given in tenths of a minute.
Here you find a HowTo to fix the local position.
First of all a OSM file is being generated out of PDF data. This data is imported via a matcher that tries to incoorporate existing seamarks and lighthouses in the data import. All lights are be tagged by using the seamark:*=* scheme.
Errors will be corrected manually.
All nodes will be identified by the int'l light number assigned by IALA. This ID will be kept within the tag ref=* and seamark:light:ref=*. Yes, this is redundant but it should limit the case that an ID gets lost specifically with the first tag since it is used for many different things.
Work is underway to extract updates from the notices to marineers. Once the data can be properly extracted, updates will occur on a weekly basis. The List of Lights is republished on a regular basis covering updates and fixes. We will reparse the data and synchronize it with the OSM database by using those references. If you plan to help us with that contact the openseamap development mailinglist.
Data import is still in progress. Updates from the NTM are not processed, yet. The imported lights reflect their state at the time of the publication and may be outdated.
Please see the following table about the state of import.
|Pub.110||not imported yet|
|Pub.113||finished||Sections 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17 imported|
|Pub.114||finished||Section 1 South Coast of England. Complete, first pass corrections done|
Section 2 East Coast of England. Complete, first pass corrections done
Up to date till US Notice to Mariners No. 18 of 2011
|Section 1 West Coast of Sweden, completed, uncorrected|
Section 2 East Coast of Denmark and Flensburger Forde, completed, uncorrected