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.

Data source

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 pdf xml
• Pub.111, W coast of N and S America, Pacific Ocean, Australia pdf xml
• Pub.112, E coast of Asia, Indian Ocean, E coast of Africa pdf xml
• Pub.113, W coast of Africa, Mediterenean Sea pdf xml
• Pub.114, British Islands, North Sea pdf xml
• Pub.115, Norway, Iceland, Antarctic Ocean pdf xml
• Pub.116, Baltic Sea pdf xml

Data accuracy

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 coluor 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.

Import process

First of all a OSM file is being generated out of PDF data. This data is imported via a matcher that tries to incorporate existing seamarks and lighthouses in the data import. All lights are be tagged by using the seamark:*=* scheme.

Errors will be corrected manually.

Merging of already existing man_made=lighthouse; see the HowTo everybody can help.

Data maintenance

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 mariners. 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 mailing list.

Import progress

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.

List	Status	Remarks
Pub.110	not imported yet
Pub.111	finished
Pub.112	finished
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 Section 3 East and North Coasts of Scotland, completed, first pass corrections done Section 4 West Coast of Scotland Complete, first pass corrections done Section 5 West Coast of England and North and West Coasts of Wales. Complete, first pass corrections done Section 6 Ireland and Northern Ireland. Complete, first pass corrections done Section 7 North Coast of France and Channel Islands. complete, first pass corrections done Section 8 North Sea-France, Belgium and The Netherlands. Complete, first pass corrections done Section 9 North Sea-Germany and Denmark. Complete, first pass corrections done
Pub.115	finished
Pub.116	finished 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 Section 3 Northeast Coast of Germany, Storegaelt, Sjaelland, Lolland and Falster, completed, parially corrected Section 4 The Sound and Bornholm, completed, uncorrected Section 5 Germany, Poland, Russia and South Coast of Sweden, completed, uncorrected Section 6 Baltic Sea - East Coast of Sweden and Gotland, completed, uncorrected Section 7 Gulf of Bothnia - East Coast of Sweden, completed, uncorrected Section 8 Lithuania, Latvia, Estonia, and Russia, completed, uncorrected Section 9 South Coast of Finland and Aland Islands, completed, uncorrected Section 10 Gulf of Bothnia - West Coast of Finland, completed, uncorrected