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even in the unlikely event technology should A HISTORY OF NAVIGATIONAL TOOLS
fail.
17th Century - SEXTANT
MAJ Elieen Sow of RSS Independence using a
traditional sextant while out at sea
Finding the Northern Star
18th Century - CHRONOMETER
Here’s a tip that you can even use on land. The
North Star (Polaris), located at the end of the
Little Dipper constellation, always points
north. To locate Polaris, use the Big Dipper.
The two outermost stars of the Big Dipper
forms a line that points to Polaris. 1930s - RADAR
Using a Sextant
1970s - GPS
A sextant allows you to measure the angle
between two celestial objects or between one
object and the horizon, allowing you to find
your position out in the open sea.