The data set shows the Norwegian Coastal Administration's defined area of authority as given through regulations on fairways.

Fairways are indicated through the Regulation dated 30 November 2009, no. 1477 (Regulation on fairways). The entire coast of Norway is currently covered by a standardised reference system of various fairway categories. The fairway structure includes the network of maritime transport arteries and is a national geographical reference system for measures within administration, planning, development and operational activities in the coastal zone. More about the fairway structure: http://www.kystverket.no/Maritim-infrastruktur/Farleder /Farledsstrukturen/

The municipal emergency response is based on risk assessments from normal enterprise in the municipality. Norway's municipalities are arranged into 34 emergency response regions. An Intermunicipal committee for acute contamination (IUA) in each region meets the requirement to maintain emergency response and take action. This intermunicipal emergency response is dimensioned to deal with smaller, acute discharges. Contamination incidents that are or develop into incidents that are too major for an IUA to deal with will be taken over by the Norwegian Coastal Administration ("Governmental action").