Poland and Sweden delimited their maritime boundary in the Baltic Sea through an agreement that was reached in 1989. The boundary, which spans 90 nautical miles, runs east to west across the southern Baltic Sea and establishes both a continental shelf and fishing zone boundary. The boundary terminates in the west before reaching a tripoint with Denmark and in the east at an established tripoint with Kaliningrad (Russia). While the method of delimitation is not explicitly written in the Agreement, Poland and Sweden utilized the principle of equidistance with modifications to reach an equitable result.