The speed of a ship at sea is 50 knots, which is equivalent to how many yards does a land car run?

Now the international common use is 1 knot, 1 nautical mile hour, 1 nautical mile kilometer. 1 knot, which is kilometers per hour.

Vehicles on land, airplanes in the air, and river vessels are measured in kilometers (kilometers) per hour, while the speed of sea vessels (including **) is called "knots".

As early as the 16th century, sea navigation was quite developed, but there were no clocks and no voyage recorders, so it was difficult to determine the speed of a ship with certainty. However, a clever sailor came up with a clever trick to throw a float with a rope towed to the surface of the sea while the ship was sailing, and then calculate the speed of the ship according to the length of the rope pulled out in a certain amount of time. At that time, quicksand timers were still used.

In order to calculate the speed of the ship more accurately, sometimes the rope released is very long, so many knots are tied at the equal distance of the rope, so that the whole speed rope is divided into several sections, as long as the number of sections of the rope is pulled in the same unit time, the corresponding speed is naturally measured. As a result, the "knot" became the unit of measurement for the speed of the sea vessel; Correspondingly, the unit of measurement for the speed of sea currents, sea winds, torpedoes and other underwater weapons is also commonly used in the world.

The code name of "knot" is the prefix of "knot", which is represented by "kn". 1 knot is equal to 1 nautical mile per hour, which is kilometers (kilometers) traveled per hour. The unit of measurement of short distances at sea is "chain", 1 chain is equal to 1 10 nautical miles, and the code name is the prefix of "cable" in English, using "cab".

A nautical mile is a unit of length in the sea. It originally referred to the length of 1 minute of latitude on the meridian of the earth, and because the earth is slightly ellipsoidal, the radian of 1 minute at different latitudes is slightly different. At the equator, 1 nautical mile is equal to about 1,843 meters; At latitude 45° it is about equal to meters, and the poles are about equal to meters.

The 1929 International Conference on Hydrography adopted the use of 1 point with an average length of 1852 meters as 1 nautical mile; In 1948, the International Conference on the Safety of Life recognized that 1,852 meters or feet was 1 nautical mile, so 1,852 meters was used as the standard nautical mile length internationally. China recognizes this criterion, which is indicated by the code "M".

In addition, the length unit of the mark for the segmented manufacture and use of anchor chains on ships also uses "knots", which usually stipulates that the length of the anchor chain is 1 knot; The sign of use of Chinese ships is 2o meters for 1 section.

The speedometer of modern sea vessels has been very advanced, and some can be digitally displayed at any time, and the "rope throwing knot" has long become history, but the "knot" is still used as a speed unit of sea vessels.

One knots of one nautical mile hour kilometer per hour times 50 equals fifty knots is equivalent to 92 yards of a car.

One knot, one nautical mile hour, kilometer hour.

Multiply by 50 equals.

Fifty knots is equivalent to a 92-yard car.