Page 168 - MustangEbook
P. 168

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.
   163   164   165   166   167   168   169   170   171   172   173