2007-12-28 09:46:11 · 16 answers · asked by hlw 1 in Cars & Transportation ➔ Aircraft
21 nautical miles per hour. A nautical mile varies considerably with lattitude, but a guestimate often used is 6,600 ft for a naut. mile. It is not necessarily correct. see Mercators' Projection
2007-12-28 09:51:21 · answer #1 · answered by friedach 6 · 0⤊ 7⤋
21 Knots To Mph
2016-10-03 03:39:39 · answer #2 · answered by Anonymous · 0⤊ 0⤋
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how fast is 21 knots?
2015-08-06 18:58:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋
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21 knots is around 24 mph All you do for conversion is take the knots and multiply by 1.15. 1 knot = 1.15 mph. 21X1.15=24.15 Have a nice cruise!
2016-04-03 08:52:11 · answer #4 · answered by Debra 4 · 0⤊ 0⤋
A knot is equal to 1.15 mph so multiplying that times 21 would make 21 knots equal 24.12 mph.
2007-12-28 09:52:02 · answer #5 · answered by jwhall60 2 · 4⤊ 1⤋
One knot is one nautical mile per hour.
One nautical mile is 1.852 km exact. So the straight forward answer is 1.852 x 21 = 38.892 kilometers per hour.
It has a defined value, so it doesnt change with lattitude or head winds. 21 knots will always be a speed of 38.892 kilometers per hour.
2007-12-28 13:27:42 · answer #6 · answered by ? 6 · 0⤊ 1⤋
as most of the people here have told you, 21 Knots equals about 24.15 mph or about 38.64 km/h.
2007-12-29 10:33:37 · answer #7 · answered by mcdonaldcj 6 · 0⤊ 0⤋
Just a little over 24 mph.
A nautical mile is 6080 feet and a normal (statute) mile is 5280 feet. or, 1 nautical mile is equal to 1.15 statute miles. 21 x 1.15 = 24.15
And Freidach: A nautical mile does not vary in length depending on latitude. It is defines as 1 arcsecond of longitude AT THE EQUATOR. Thats what defines the nautical mile. Therefore, it is always the same distance. 6080 feet.
2007-12-28 11:04:03 · answer #8 · answered by Jason 5 · 1⤊ 2⤋
Your simple formulas:
Knots to MPH= what ever number kts multiplied by 1.15
Notical Miles to Miles= what ever number of notical miles divided by 1.15
2007-12-30 21:26:33 · answer #9 · answered by Anonymous · 0⤊ 0⤋
21 knots = 24.1663684 mph
2007-12-28 10:41:01 · answer #10 · answered by Mike 3 · 1⤊ 2⤋
It's 38.913kph, about 24 miles per hour. Not very fast.
2007-12-28 21:22:55 · answer #11 · answered by Salazar Slytherin 2 · 1⤊ 0⤋