And here I thought chains were only used for cricket and train tracks.

There’s a slight difference in that “Ostsee” is the common name. If the German chancellor decides to call it “Deutsche See” tomorrow, the name would continue to be “Ostsee”, because that’s how language usually works.

“Gulf of America” is just a dictator’s wish of a common name. The people of OpenStreetMap decided to use the tag “official_name:en_US” for that reason, while keeping “Gulf of Mexico” for the commonly used “name:en-US”.

Lemmy itself doesn’t support user tags, but some of the clients like voyager, do.

What the heck is that map projection? It’s like Mercator on steroids.