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the information about aircraft carriers now shows that the cruising speed is mostly around 30 knots. why do countries in the world that can build aircraft carriers limit their speed to 20 knots? if converted into the speed of a car driving on land, what kind of speed is 30 knots?

the knot, a measure of speed in navigation, was first used in the west in the days of sailing. this was done by marking ropes on the sea to record the speed of sailing. one knot was called a knot, and the distance was calculated by recording one nautical mile per hour.

later, the knot was used internationally to represent the speed of ships at sea. now, this unit is also used internationally to measure and record the speed of ocean currents. the speed of one knot is equal to one nautical mile per hour, which is equivalent to a distance of about 1.852 kilometers per hour.

according to the normal speed of an aircraft carrier, the fastest speed can reach about 30 knots per hour. the unit code for speed of one knot is kn. according to 30 knots, one knot is 1.852 kilometers, which means a distance of about 56 kilometers per hour. on land, a car driving at this speed cannot reach 60 kilometers per hour. it may not seem like a high-speed drive, but on the ocean, this speed is actually very remarkable.