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A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. [2] [3] [4] Historically, it was defined as the meridian arc length corresponding to one minute ( 1 / 60 of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360 degrees).
A nunatak rising to about 1,500 metres (4,900 ft) high, located 1 nautical mile (1.9 km; 1.2 mi) northwest of Neff Nunatak and 1.5 nautical miles (2.8 km; 1.7 mi) south-southwest of Gaylord Nunatak. Mapped by USGS from United States Navy aerial photographs taken 1965-68.
Legua nautica (nautical league): Between 1400 and 1600 the Spanish nautical league was equal to four Roman miles of 4,842 feet, making it 19,368 feet (5,903 metres or 3.1876 modern nautical miles). However, the accepted number of Spanish nautical leagues to a degree varied between 14 1/6 to 16 2/3, so in actual practice the length of a Spanish ...
A rock peak, 2,200 metres (7,200 ft) high, surmounting the east extremity of the Bermel Escarpment, 1.5 nautical miles (2.8 km; 1.7 mi) west-northwest of Mount Powell The name was proposed by Peter Bermel and Arthur Ford, co-leaders of the USGS Thiel Mountains party which surveyed these mountains in 1960-61.
At sea level one minute of arc along the equator equals exactly one geographical mile (not to be confused with international mile or statute mile) along the Earth's equator or approximately one nautical mile (1,852 metres; 1.151 miles). [14] A second of arc, one sixtieth of this amount, is roughly 30 metres (98 feet).
With qualifiers, mile is also used to describe or translate a wide range of units derived from or roughly equivalent to the Roman mile (roughly 1.48 km), such as the nautical mile (now 1.852 km exactly), the Italian mile (roughly 1.852 km), and the Chinese mile (now 500 m exactly).
A mostly ice-free valley 1.5 nautical miles (2.8 km; 1.7 mi) long that descends south from Vashka Crag. The valley is bounded to the east by Peterson Terrace and terminates as a hanging valley 0.5 nautical miles (0.93 km; 0.58 mi) northwest of Lake Vashka.
A prominent isolated nunatak, the most westerly near the head of Mackay Glacier, standing 8 nautical miles (15 km; 9.2 mi) southwest of Mount Brooke where it is visible for a considerable distance from many directions. So named by the New Zealand party of the CTAE (1956-58) because of the carapaces of small crustaceans found in the rocks.