An interesting anomaly has crept into square E009N057... I don't see the error, but the submarine can't enter this square...
Need advice on this... I could not resist the temptation to create a Gyota channel on the map... This link has a demo version of the Göta channel and Limmfjord files)
Download
https://drive.google.com/file/d/1bh0...ew?usp=sharing