This map is not current. It lacks NS1 leading from Wyborg, Russia, most eastern Baltic Sea to Lubmin, Germany, since 2011, right next to Rostock in the western Baltic Sea(in the scale of that map). And NS2 mostly parallel to it, with the exception of starting in Ust-Luga, Russia.

Maybe try https://www.gie.eu/publications/maps/ for a more complete view.