>die Quelle und den denkbaren Umrechnungsfehler der Daten gefunden.
Beides habe ich noch nicht gefunden. Als Sekundärquelle fand ich bislang osm.wiki/DE:Grenze/Basislinie_Deutschland#12-Meilen-Zone_Nordsee. Dort ist der bereits von ED-50 nach WGS-84 umgerechnete Punkt mit 53.7253321 6.3460009 angegeben. So steht er aktuell auch in der OSM. Wo finde ich die Orignalquelle?

Hallo,
bist Du sicher, dass der Punkt node/342971047 mit N 53° 43' 31.196" E 6° 20' 45.603" auf der richtigen Koordinate liegt?

Im September 2017 wurde dort ein NSG festgesetzt. Dessen südwestlichster Punkt BRG1 bei 53° 43' 28,2" N 6° 20' 45,0" E.
Siehe https://de.wikipedia.org/wiki/Borkum-Riffgrund_%28Naturschutzgebiet%29#Weblinks

On all storage tanks in the factory like way/538589784 content=òil is set. Why not the English word oil?

I'm going to change content=molas to the full form content=molasses.

With this change content=Obat was set for this storage tank way/537309084 According to https://id.wikipedia.org/wiki/Obat this means a medicine or a drug. Please check if the English word "chemicals" fits better for this. It does include herbal medicines and is commonly used, see https://taginfo.openstreetmap.org/keys/content#values

Siehe changeset/53943024

In changeset/53931250 content=nafta was changed to content=diesel

Please see changeset/53930311 for changes on the content=water tag for the three water storage tanks

Please see changeset/53930067 for some changes on the sewage plant

This isn't a natural resource but 100% artificial. I'm going revert this change.

Is there really ready to use concrete stored in the tank way/387312456? Or is it the dry cement only?

Warum wurde bei dem Gastank way/456552996 neu content=gasmm getagged? Wäre nitrogen nicht besser?

With this change for way/526772362 content=li is set. Is the exact content or substance known?

Tthe two pipelines 385266668 and 385266669 in this changeset are tagged with substance=nap What substance is "nap". Feel free to post a link to wikipedia.

This change affects the two pipelines way/54630411 and way/54630411 which have now the tag substance=fuels set. This tagging is unique in the database. I'm going to change it to substance=hydrocarbons.

Thanks. Further discussion on OP's changeset comment in changeset/26201816

A part of the name Countrymark Finished Product Pipeline should not be part of the tagging. See changeset/53903841

For way/493835731 the typo in value "gravai" was corrected by deleting the whole substance tag. See changeset/53901206

For the way/308593417 substance=nafta was tagged. Does this pipeline contain
a) some kind of fuel ready to use for self igniting engines https://nl.wikipedia.org/wiki/Dieselolie
b) an intermediate oil distillation product https://en.oxforddictionaries.com/definition/naphtha
c) the North American Free Trade Agreement
Please discuss at the first occurrence of this value in change set changeset/26201816

The pipelines type was set to "nafta". Does it contain
a) some kind of fuel ready to use for self igniting engines https://nl.wikipedia.org/wiki/Dieselolie
b) an intermediate oil distillation product https://en.oxforddictionaries.com/definition/naphtha
c) the North American Free Trade Agreement