Evening Republican, Volume 18, Number 2, Rensselaer, Jasper County, 2 January 1914 — Measuring a Ship's Speed [ARTICLE]

Measuring a Ship's Speed

▲ ship's speed as you know, la reckoned by “knots,** a knot being a geographical mile, or one-sixtieth of a degree. Six geographical miles are about equal to seven statute miles, and a ship that sails twelve knots, therefore, is really moving at the rate of fourteen statute miles an hour. It should be remembered that it Is incorrect to say so many “knots an houi I ,’’ simply so many knots, tar a knot means “one mile an hoar.**