The Oslofjord Outdoor Recreation Council (OF) works to protect the natural environment in the Oslo Fjord, and secure public wilderness areas.
OF has a number cabins along the Oslo Fjord coast and on the islands in the Fjord.
Inner Oslo Fjord: Rødstua, Ytre Vassholmen, Kjeholmen, "Butikken", Fyrsteilene, Vestli, Ommen, Veslestua, Husbergøya, Båthuset, Eldhuset, Badstua, Stranda, Fiskerhytta and Ranvikholmen
Vestfold: Sandsletta, Løvøysund, Kommandantboligen, Ildverket, Søndre Tenvik, Sandøsund, Gokstadholmen, Buerøya, Jakthytta and Malmøya
Østfold: Lauer, Akerøya, Fløterhytta and Struten Fyr