Franz Josef Land air bases in the Arctic. A major new base, named the "Arctic Trefoil" for its three lobed structure, was constructed at Nagurskoye. It can maintain 150 soldiers for 18 months and has an area of 14,000 square meters. In 2017, Russian president Vladimir Putin visited the archipelago to protect Russia's interests in the Arctic. The archipelago constitutes the northernmost part of Russia's Arkhangelsk Oblast, located between 79°46′ and 81°52′ north and 44°52′ and 62°25′ east. It is situated north of Novaya Zemlya and east of the Norwegian archipelago of Svalbard. Located within the Arctic Ocean, Franz Josef Land constitutes the
Novaya Zemlya numbering 298, was removed to the mainland in 1957 before nuclear testing began. In 1943, during World War II, Novaya Zemlya briefly served as a secret seaplane base for Nazi Germany's "Kriegsmarine", to provide German surveillance of Allied shipping en route to Siberia. The seaplane base was established by U-255 and U-711, which were operating along the Northern coast of Soviet Russia as part of "13th U-boat Flotilla". Seaplane sorties were flown in August and September 1943. In the months following Hitler’s June 1941 invasion of the Soviet Union, the United States and Great Britain organized convoys of merchant ships