BORIStheCrusher;1372746 wrote:It is but they use different definitions.

http://science.howstuffworks.com/innovation/science-questions/question79.htm

Good info

A nautical mile is based on the circumference of the planet Earth. If you were to cut the Earth in half at the equator, you could pick up one of the halves and look at the equator as a circle. You could divide that circle into 360 degrees. You could then divide a degree into 60 minutes. A minute of arc on the planet Earth is 1 nautical mile. This unit of measurement is used by all nations for air and sea travel.

So a nautical mile at sea level is shorter than a nautical mile at elevation?

A knot is a unit of measure for speed. If you are traveling at a speed of 1 nautical mile per hour, you are said to be traveling at a speed of 1 knot.

Doesn't that mean if 1 knot at sea level and 1 knot at elevation (like in a plain) that you are not travelling the same speed? And 1 knot in a submerged submarine is slower than 1 knot in a boat?

Virgil "Gus" Grissom was America's second astronaut in space aboard the capsule Liberty Bell 7. After landing in the Atlantic, a hatch on the capsule opened prematurely, and Grissom nearly drowned before being rescued by helicopter. To prevent this from happening again, Grissom recommended to NASA designers that the hatch on the three-man Apollo capsule be made more difficult to open. Ironically, while testing the Apollo capsule before its first flight, Grissom was killed in a fire along with fellow astronauts Ed White and Roger B. Chaffee when the new hatch proved too difficult to open.

Started watching Justified again last night per the thread. In the second season.

My feet are cold.

K.