territorial sea from four nautical miles to twelve nautical miles. comes in the wake of the recent Prestige incident. east of the Barents Sea. coast. at Wikborg Rein. Norway to establish traffic separation zones along the Norwegian coastline. ballast would be allowed nearer to the shore. spill. Norwegian coast, some of which have polluted the coastline. prevent a Prestige-type incident in its waters," says Stang Lund. customs purposes. Norwegian authorities to intercept suspected immigrant and drug smugglers.