Gressholmen

59°52'59"N 010°42'59"E

Runway: n/a - water

Airfield Gressholmen was an seaplane airfield on the islet of Gressholmen, just off Oslo
The airfield was built in 1927.
Passengers were brought to the airfield by ferry from the city's largest railway station, Oslo East.
It was mainly served by Deutsche Luft Hansa with Dornier 'Wal' and 'Super Wal' aircraft, and from 1934 by Ju-52/3m-See seaplanes.
In 1935 the newly formed Det Norske Luftfartsselskap took over the operation, also operating Ju-52s.
They had plans for transatlantic flights with PanAm, but these never commenced.





Gressholmen in 1934 (NRK.no).






Sikorsky S-43 LN-DAG 'Valkyrien' belonging to Det Norske Luftfartselskap (DNL) at Gressholmen Airport (Wikipedia).

 

The airport role as main airport ended when Fornebu opened in 1939.
It remained in operation though, as DNLs engineering and maintenance works remained on the island until the outbreak of war in 1940.
In 1952 all seaplane movements were taken to Fornebu's seaplane base and the airfield closed.
The airfield still exists, unchanged and in good condition.
Today it, its jetty, its platform and its hangars are used by boaters for storage and repair.
A nice series of 1930s photos can be viewed at NRK.nu.






Gressholmen airport (today a marina) in 2010 (Google Earth)






The rails to transport aircraft from the water to the hangar still existed at Gressholmen in 2011 (Gressholmen by aktivioslo, on Flickr).