North Pole Since 2002, the Russians have also annually established a base, Barneo, close to the Pole. This operates for a few weeks during early spring. Studies in the 2000s predicted that the North Pole may become seasonally ice-free because of Arctic ice shrinkage, with timescales varying from 2016 to the late 21st century or later. The sea depth at the North Pole has been measured at by the Russian Mir submersible in 2007 and at 4,087 m (13,410 ft) by USS "Nautilus" in 1958. The nearest land is usually said to be Kaffeklubben Island, off the northern coast of Greenland about
USOS Seaview , commissioned in 1954, was the first nuclear-powered ship of any kind. In August 1958, she steamed under the Arctic ice cap to make the first crossing from the Pacific to the Atlantic via the North Pole. On 3 August 1958 she became the first ship to reach the North Pole. On 17 March 1959, the nuclear submarine became the first submarine to surface at the North Pole. While at the Pole, her crew scattered the ashes of Arctic explorer Sir Hubert Wilkins. The film "Voyage to the Bottom of the Sea" begins with "Seaview" in the Arctic on the