Tromsø Airport, Skattøra (Norwegian: Tromsø sjøflyhavn, Skattøra), also known by its military designation Skattøra Naval Air Station (Norwegian: Skattøra sjøflystasjon, German: Seefliegerhorst Tromsö) was a water aerodrome and air base situated at in the city of Tromsø in Tromsø Municipality in Troms og Finnmark county, Norway. Construction began in 1938 and the aerodrome was in use until 1975. At its peak it was the largest water airport in Northern Europe.