What does the speed mean?
Time:
2023-12-13
Section (English: knot), the unit symbol kn, is a rate unit dedicated to navigation, which extends to aviation and is equivalent to the number of nautical miles traveled by a ship or aircraft per hour. 1 knot = 1 nautical mile/hour = 1.852 km/h = 0.514444 m/s. Mileage traveled by a ship in a unit of time. Calculated in nautical miles per hour, referred to as knots. It is one of the most important tactical and technical performances of a ship. Usually, the speed of surface ships is divided into maximum speed, full speed, cruise speed, economic speed and minimum speed. At present, the speed of large ships such as aircraft carriers and missile destroyers is usually about 30 knots, while the speed of small ships such as missile speedboats and torpedo speedboats is usually 40 to 60 knots. A nautical mile is a unit of length at sea. It originally refers to the length of the latitude interval of 1 minute on the meridian of the earth. Because the earth is slightly ellipsoidal, the radian of 1 minute at different latitudes is slightly different. 1 nautical mile on the equator is about 1843 meters; Latitude 45 ° is equal to about 1852.2 meters, the poles are equal to about 1861.6 meters. In 1929, the International Conference on Hydrology and Geography adopted an average length of 1852 meters as one nautical mile. In 1948, the International Conference on the Safety of Life recognized that 1852 meters or 6076.115 feet was 1 nautical mile, so the international standard nautical mile length was 1852 meters. China recognizes this standard, denoted by the code "M.
Section (English: knot), the unit symbol kn, is a rate unit dedicated to navigation, which extends to aviation and is equivalent to the number of nautical miles traveled by a ship or aircraft per hour.
1 knot = 1 nautical mile/hour = 1.852 km/h = 0.514444 m/s.
Mileage traveled by a ship in a unit of time. Calculated in nautical miles per hour, referred to as knots. It is one of the most important tactical and technical performances of a ship. Usually, the speed of surface ships is divided into maximum speed, full speed, cruise speed, economic speed and minimum speed. At present, the speed of large ships such as aircraft carriers and missile destroyers is usually about 30 knots, while the speed of small ships such as missile speedboats and torpedo speedboats is usually 40 to 60 knots.
A nautical mile is a unit of length at sea. It originally refers to the length of the latitude interval of 1 minute on the meridian of the earth. Because the earth is slightly ellipsoidal, the radian of 1 minute at different latitudes is slightly different. 1 nautical mile on the equator is about 1843 meters;
Latitude 45 ° is equal to about 1852.2 meters, the poles are equal to about 1861.6 meters. In 1929, the International Conference on Hydrology and Geography adopted an average length of 1852 meters as one nautical mile. In 1948, the International Conference on the Safety of Life recognized that 1852 meters or 6076.115 feet was 1 nautical mile, so the international standard nautical mile length was 1852 meters. China recognizes this standard, denoted by the code "M.
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