[4] These latter claims lack basis in fact, with the second, made by Joris Carolus, impossible knowing ice conditions that season; although Marmaduke did at least reach Gråhuken, at 79° 48′N.
Sir Albert Hastings Markham, a member of the British Arctic Expedition of 1875 was the next one to get closer to the pole 48 years later, when he reached a latitude of 83° 20′26″N by a dog sledge.
In 1900, Umberto Cagni of the Italian Royal Navy left the base camp established by Luigi Amedeo, Duke of the Abruzzi, and reached latitude 86° 34′N on April 25, beating Nansen's 1895 mark by 35 to 40 kilometres (22 to 25 mi).
In recent decades, however, Peary's claim has become the subject of controversy,[8] though he did set a new record for Farthest North – his support party was dismissed at 87° 45′N.
In 1931, an expedition led by Sir Hubert Wilkins and Lincoln Ellsworth and partly financed by William Randolph Hearst attempted to reach the North Pole with a leased US Navy submarine named Nautilus, formerly the USS O-12.
Finally, on 12 May 1926, the airship Norge carried Roald Amundsen and fifteen other men including the craft's designer and pilot Umberto Nobile, helmsman Oscar Wisting, navigator Hjalmar Riiser-Larsen, and the expedition's sponsor, Lincoln Ellsworth, over the North Pole, en route from Spitsbergen to Alaska, the first achievement of the Pole about which there is no controversy.
On 6 April 1969, British explorer Sir Wally Herbert became the first person to indubitably reach the Pole on foot, having sledged from Alaska.