Where can I get the coordinates of the Black Sea contour?

Question

Google Maps

Greetings!
There is a set of objects on the coast with coordinates.
It is necessary to automatically calculate the distance from the object to the sea.
I know how to write sql-query for calculation. But for this you need to have the largest base of coordinates of the perimeter of the sea.
As an option, I think to spend a couple of days in Google Earth and "click" manually a couple of tens of thousands of points along the coast, and then upload it to the database.
Maybe there are automatic ways?
Thank you!

Answer 1

In general, there is a normal open geobase , and not Google and co, where you can only look with your eyes.
overpass-turbo.eu/s/hct - Press START and then export to the appropriate format.