The original 14.4 meter distance between knots in the rope, divided by a 30-second timer, was equivalent to a speed of 1.85 kilometers per hour. Ergo, 1 knot equals 1 nautical mile per hour.

In order to determine their ship's speed, a sailor would toss overboard a chip log, a line with knots every 14.4 metres with a wedge-shaped piece of wood at the far end.

A temporary 10-knot speed limit on cruise ships taking passengers through the "whale waters" of Alaska's Glacier Bay National Park has been lifted. Officials of the national park say changes in ...

So, today, if you’re using a 28-second timer, to get your accurate speed in knots, you need to have the interval of knots at 14.4018 meters (47 feet, 3 inches).

Existing rules also require cruise ships to maintain a 1/4-mile distance from whales in order to reduce disturbance and the risk of a whale-ship collision. Last summer, the park implemented speed ...

Letter Published: 30 March 1968 Two-component Electromagnetic Ship's Log M. J. TUCKER, N. D. SMITH & E. P. COLLINS Nature 217, 1244–1245 (1968) Cite this article ...

The average speed of most modern cruise ships is just 20 knots or approximately 23 miles per hour. This may not seem much, but this is enough for a ship to travel 480 nautical miles or 550 miles ...