EqDistant Plugin This is a QGIS plugin to create an equidistant line to determine maritime boundary based on equidistance principle. Demo Video Watch the plugin in action here Opposite Case Adjacent Case Features Selection Result Example Equidistant Line Equidistant Line with construction line Equidistant Line with equidistance points Tutorial Visit the tutorial on how to use the plugin in http://ivanbusthomi.github.io/plugins/eqdistant/