How far is a chain of distance in a voyage How fast is a section of speed

1 nautical mile originally refers to the length of 1 minute of latitude on the meridian of the earth, and because the earth is slightly ellipsoidal, the 1 minute radian at different latitudes is slightly different. At the equator, 1 nautical mile is equal to about 1,843 meters; Latitude 45° is approximately equal to.

meters, the poles are approximately equal to.

Rice. Therefore, a nautical mile is about equal to 1852 meters, commonly known as "knot" in navigation, the unit of measurement of short distances at sea is "chain", 1 chain is equal to 1 10 nautical miles, the code name is the prefix of English "cable", with "cab", the nautical measurement distance is about 1 chain, but in the anchor chain, there is also a unit called "knot" to measure the length of the anchor chain is meters.

Assuming that the bicycle is traveling at a normal speed of 30 km/h, about 16 knots, you can feel what it feels like to have 1 knot (nautical mile). Hehe.

1 chain = meter.

Kilometer. One knot is 1 nautical mile hour, and 1 nautical mile is a kilometer.

The Earth's equatorial circumference is 40,000 km.

40000 360° = km.

So. km min ( km min )

That is: 1 nautical mile (km) is the arc length of each minute at the Earth's equator.

Nautical miles = 1 chain.

The speed of 1 knot is:

1. 1 nautical mile per hour (n mile h);

2. Meters per second (m s);

3. Kilometers per hour (km h).

The unit of measurement of speed of land vehicles and river vessels is mostly kilometers (kilometers) hours, while the speed unit of sea vessels (including **) is called "knots". Later, it was also used for the speed of wind and ocean currents.

The symbol of the section is the prefix of the English "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, with "cab".

In addition, the section is also a unit of length for the segmentation of the ship's anchor chain and the use of the mark. The length of the anchor chain is usually specified as 1 knot in meters, while the length of the anchor chain of Chinese ships is marked at 20 meters as 1 knot.

The SO standard and the Institute of Electrical and Electronics Engineers (IEEE) use the unit symbol KN, which is also commonly used kt, which is a unit of rate dedicated to navigation and later extended to aviation, which is equivalent to the number of nautical miles per hour traveled by a ship or aircraft. It is important to note that due to the fact that the aircraft is flying in different atmospheric conditions, the knots of the airspeed indicated by the aviation instruments may differ from the real speed.

In order to calculate the speed of a ship, sailors came up with a way to tie knots on a long rope and lower it with the current, and calculate the speed of the ship by counting the number of knots washed away in a certain time.

The distance of each knot is 47 feet 3 inches (m) (100 nautical miles), and the sailor will use a 30-second hourglass (28 seconds is currently used due to the international standard in the sea) to calculate the speed of movement, and each knot is divided into a section.

A knot is a unit of speed, not a unit of length 1 knot = 1 nautical mile hour.

But one section can travel 1 nautical mile = kilometer in one hour.

1 knots 1 knot, 1 knot, km/h.

Section]: A unit of speed for a ship to sail, and later, also for the speed of wind and ocean currents.

Internationally, 1 knot is equal to 1 nautical mile per hour, and 1 nautical mile is equal to kilometer, that is, kilometer.

A knot is a unit of velocity dedicated to navigation, which later extends to aviation, and is equivalent to the number of nautical miles traveled per hour by a ship or aircraft. In the 16th century, in order to calculate the speed of the ship, sailors came up with the method of shading, tying many knots on a long rope and then lowering the macro talk at the stern of the ship, by counting the number of knots washed away in a certain period of time. Later it became a festival.

Internationally, it is 1 knot 1 nautical mile hour, 1 nautical mile comma km. 1 knot, which is kilometers per hour.

The speed measurement unit of land vehicles and airplanes, as well as river ships, is mostly measured in kilometers (kilometers) and hours, while the speed unit of sea vessels (including military grinding and pleasure ships) is called "knots".

1 knot = 1 nautical mile Hour rush imitation 1 nautical mile = kilometer (km) (Chinese standard) 1 nautical mile = km (km).(U.S. Standards).

1 nautical mile = kilometer (km).(British Standard).

1 nautical mile = kilometer (km).(French Standard).

1 seamount type = km (km).(Russian standard bulk fiber).

1 knots 1 knot, 1 knot, km/h.

knot, unit symbol kn, is a unit of velocity dedicated to navigation, which is later extended to aviation, and is equivalent to the number of nautical miles per hour traveled by a ship or aircraft.

According to the size, the speed can be divided into maximum speed, full speed, cruising speed, etc., which are introduced as follows:

1. Maximum speed: refers to the speed reached by the main power device when it is running at maximum power;

2. Full speed: refers to the speed reached by the main power device when it runs at the rated total power;

3. Cruising speed: It is the speed commonly used when cruising ships, and usually ships of the same type stipulate a main engine speed as cruising speed;

4. Economic speed: refers to the speed with the lowest cost determined according to factors such as ship transportation requirements and operating expenses;

5. Minimum speed: refers to the minimum speed at which the rudder can play a maneuvering role.

Internationally, it 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".

The modern exact meaning of "knot" is 1 nautical mile per hour (1 nautical mile = 1852 meters).

In navigation, the "knot" that indicates speed is how many nautical miles are sailed in an hour. One section represents one nautical mile per hour. One nautical mile is 1,852 meters, so one section is 1,852 meters per hour.

knots = 1 nautical mile hour.

The knot is the 16th century when the age of sail, there is no clock, there is no locator, the crew of the sea ship with an evenly tied rope dragged down the sea to measure the speed of the ship, each put down a section of rope in the sea, is a unit, the same knotted two ropes on the two ships, after sailing together for a while, A ship put 18 ropes, B ship put 25 ropes, then the speed of the speed came out. This tradition was later used by the nautical world as a unit of ship speed. Therefore, there is only a sea ship section, and neither land nor airplanes are used.

Then there came nautical miles, which was equivalent to the length of a section on that rope, which was prescribed as 1 nautical mile.

Nautical mile** is 1 minute of latitude on the Earth's meridian, and 1 nautical mile on the equator is equal to about 1843 meters; At latitude 45° it is approximately equal to meters, and the poles are approximately equal to meters. In 1929 the International Hydrographic Code established 1 point with an average length of 1852 meters as 1 nautical mile. Therefore, this unit is adopted internationally as a unit of distance at sea.

So: 1 nautical mile (n mile) = 1852 meters, which is a kilometer.

"section"is a unit of velocity.

knots (kn) used to be used by the crew to measure the speed of the ship, and for every 1 nautical mile walked, the crew made a knot on the lowered rope. In the future, knots will be used as a unit of ship speed.

1 knots 1 knot, 1 knot, km/h.

1 nautical mile = kilometer.

1 knot(kn) = 1 nautical mile hour.

1 nautical mile (n mile) = kilometer.

The code name of "knot" is the prefix of "knot", which is represented by "kn". 1

knots are equal to 1 nautical mile per hour, or 1,852 kilometers (km) 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, with "cab".

The speed of one section is 1 nautical mile hour.