Farthest North 1948. On , a US Navy submarine, also named , was the first to sail under the ice pack to reach the North Pole. On , the became the first submarine to surface at the North Pole. In 1968, British explorer Sir Wally Herbert became the first person to indubitably reach the Pole on foot, having sledged from Alaska. His expedition was supported by air drops. Farthest North Farthest North describes the most northerly latitude reached by explorers before the conquest of the North Pole rendered the expression obsolete. The Arctic polar regions are much more accessible than those of
North Pole North Pole (or South Pole) when metre-scale precision is required. It is desirable to tie the system of Earth coordinates (latitude, longitude, and elevations or orography) to fixed landforms. Of course, given plate tectonics and isostasy, there is no system in which all geographic features are fixed. Yet the International Earth Rotation and Reference Systems Service and the International Astronomical Union have defined a framework called the International Terrestrial Reference System. As early as the 16th century, many prominent people correctly believed that the North Pole was in a sea, which in the 19th century was called the Polynya or