Key:seamark:fixme

seamark:fixme=* is used in combination with OpenSeaMap/Lights Data Model to describe errors which are known and should be corrected manually. Many lights of Openseamap are imported automatically (see OpenSeaMap/List_of_Lights_Import). During parsing the raw data several errors may occur. Some of them are detected automatically but cannot be corrected by software. The reason for those errors is either because the parser incorrectly detected something or because of syntax errors within the original data. The data source of all lights is the List of Lights published by the US NGA as PDF documents. In the following we will refer to this list just as the LoL.

Note that the original documents are republished once a year thereby containing corrections. Thus, errors may change or may be fixed. All tagged errors refer to a specific version of the original documents. The origin and date of issue is kept within the source=* tag.

Note that standard tag for such purpose is fixme=* - consider using it instead.

SeaMapEditor

In JOSM SeaMapEditor all unverified lights objects are marked with a yellow star. This requires that the SeaMapEditor be loaded:
JOSM Edit menu, select "Settings" icon "socket" (plugins), click plugin "SeaMapEditor" check-box, "OK" and restart JOSM.

How to download and use JOSM

please_fix_position

The positions items in the List of Lights are given to the nearest 1/10 minute, so they may have a positional error of 180m or more. Sometimes the data is not based on WGS84, and can result in positional errors of several hundred metres. Therefore, each imported lights object is tagged with: seamark:fixme=please_fix_position. Please survey your area to find these seamarks and correct the position and any other incorrect data. Then delete the "seamark:fixme" tag.

Lights-FIXME-Chart

Lights-FIXME-Chart

In the Lights-FIXME-Chart you find all lights waiting for the right position...

Walk aroud the coast:

from z=6 you will see the light

Change to OpenSeaMap to look for lights:

in z=10..18 you will see the lights

in z=14..18 you will see "Check Position" (if there is)

Zoom in to z=18, select in the OpenSeaMap-menu (JOSM already started) "Edit by JOSM remote"

Select in JOSM in the menu "background" the "Bing" aero photos.
Move the light to the right position,
and delete the tag "please fix position".

The chart will be updated weekly.

man_made=lighthouse

Where there is already a mapped feature such as a man_made=lighthouse but without any OpenSeaMap tags, it must be merged with the imported lights object. In this case, the man_made=lighthouse can be taken to be in the correct position, and the imported seamark:type=light_major would have the correct seamark tagging:

• 

  man_made and
  yellow star

• 

  check position
  by aerial photo

• 

  done

1. Search the coast for a man_made=lighthouse.
2. Check with aerial photographs, whether the position is exact.
3. Look for the matching "yellow star" it will most likely be a seamark:type=light_major very often it may have a seamark:longname=* tag which helps to compare or the tower height in a seamark:landmark:height=* tag or the height of the light in seamark:light:height=* may help.
   If there are other yellow stars within 1-2km, examine them all to be certain that the correct match has been made.
4. be sure to have closed the sector window, if not close it.
5. Copy the yellow star with <Ctrl-c>.
6. Select the man_made=lighthouse and use <Shift-Ctrl-v> to add all the properties automatically.
7. When you have verified that the position accuracy is within 20m (from accurate aerial images, local knowledge or survey), then delete the tag seamark:fixme=please_fix_position in the completed light and this will change the icon from the yellow star to light_major or light_minor black star.
8. Erase the star no longer needed, and upload the result.

Value List

The errors sould be listed as a comma separated list.

Value	Description
beacon_guess	If a seamark is detected to be a lateral mark but not class (buoy, beacon, float,...) was found it is assumed to be a beacon but this may be wrong.
e_lateral
height	The height according to column 5 of LoL seems to be detected incorrectly.
intdup	Column 1 of the LoL contains more then 1 light with this international reference ID.
intset
lateral_unknown
name_incomplete	All names within the LoL end with a period otherwise it is tagged like this. The names are contained within column 2 of LoL.
noindex
please_fix_position	The LoL has a data accuracy of not more than 185 meters, hence, all lights should be positioned accurately by hand. This attribute is set by default as long as it was not repositioned accurately.
racon_char
rem_incomplete	This is the same as name_incomplete but in respect to the Remarks which is column 8 of LoL.
usldup	Some lights have no international reference ID assigned but just an internal number of the US NGA. If several lights with the same number exist, they are tagged like this.

Maintainers

If you like to care for an area:

Maintainer	Area	Pub.
Malcolm	Pub114 (Great Britain, North Sea)	114
Bernhard	Croatia, Greece	113
Dave	Australia	111,112

Progress

Date	Lights	FIXME	diff FIXME	cum	OK %	Remarks
2012-12-28	46'426	29'882	0	0	35,6
2013-01-04	46'845	28'211	1671	1671	39,8	400 new lights
2013-01-11	46'113	27'966	245	1916	39,4
2013-01-28	46'188	27'660	306	2222	40,1
2013-02-07	46'186	27'637	23	2245	40,2
2013-02-14	46'223	27'326	311	2556	40,9
2013-02-20	46'207	27'321	5	2561	40,9
2013-03-05	46'140	26'477	844	3405	42,6
2013-03-22	46'181	26'277	200	3605	43,1
2013-04-05	46'193	26'168	109	3714	43,4
2013-04-20	46'227	25'943	225	3939	43,9
2013-04-27	46'147	25'817	126	4065	44,1
2013-05-13	46'050	25'725	92	4157	44,1
2013-05-22	46'037	25'593	132	4289	44,4
2013-06-09	46'033	25'530	63	4352	44,5
2013-06-28	46'057	25'513	17	4369	44,6
2013-07-14	46'058	25'469	44	4413	44,7
2013-08-01	46'063	25'380	89	4502	44,9	lights coninouesly decreasing
2013-08-27	45'788	24'898	482	4984	45,6
2013-09-11	45'733	24'733	165	5149	45,9
2013-09-20	45'665	24'608	125	5274	46,1
2013-10-11	45'516	24'408	200	5447	46,4
2013-10-29	45'366	24'249	159	5633	46,5
2013-11-20	45'116	23'803	446	6079	47,2
2013-12-14	45'003	23'678	125	6204	47,4
2014-01-01	44.890	23.560	243	6322	47,5
2014-01-11	44.882	23.535	25	6347	47,6
2014-01-28	44.985	23.406	129	6476	48,0	100 new lights
2014-02-19	44.944	23.188	218	6694	48,4
2014-04-23	41.663	19.223	3965	10.659	53,9	3281 lights deleted in 2 months
2014-05-21	41.369	18.700	523	11.182	54,8	294 lights deleted
2014-06-04	41.196	18:345	355	11.537	55,5	173 lights deleted
2014-06-30	41.171	17.707	648	12.175	57,0	25 lights deleted
2014-08-10	40.480	16.187	1520	13.695	56,3	691 lights deleted
2014-08-30	39.361	14.148	2039	15.734	58,9	1119 lights deleted
2014-10-17	39.311	13.3418	807	16.541	64,0	50 lights deleted
2014-11-08	39.146	13.086	255	16.796	65,9	165 lights deleted
2014-11-24	38.866	12.680	460	17.202	66,3	280 lights deleted
2015-01-07	38.331	11.704	976	18.178	66,9	535 lights deleted
2015-02-01	38.076	11.394	310	18.488	69,3	255 lights deleted
2015-03-11	27.982	1.258	10.136	28.684	59,3	10.094 lights deleted
2015-04-11	28.036	1.125	133	28.757	95,5
2016-03-031	30.068	9	1.116	29.873	96,3	2.000 new lights
Date	Lights	FIXME	diff FIXME	cum	OK %	Remarks

row	content
lights	seamark:light:character=*
FIXME	seamark:fixme=please_fix_position
diff FIXME	seamark:fixme=please_fix_position (old) - seamark:fixme=please_fix_position (new)
cum	Fixed lights since import
OK %	(lights - seamark:fixme=please_fix_position) / lights

Deleted lights

Licence change

During the OSM-licence change 2012 there was deleted som lights by a bot "OSMF Redaction Account".
See this Example

Deleters

We lost more than 7000 lights by some unknown deleters. See Progress.