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Day Skipper - Part 4 - Navigation
instruments
A navigator needs some way to plot courses, some means of measuring,
and some means of drawing.
Probably the most popular way to plot a course in a confined space is
with the Breton or Portland plotter. The Douglas protractor is a smaller
alternative but it cannot be used for drawing long lines. Parallel rules
and Rolling rulers are not really suited to small chart table areas, although
people from a Royal or Merchant Navy background will have difficulty in
using anything else! Always use 2B pencils for navigation because it is
easy to erase 2B lines, and charts will have a much longer life if they
are not rubbed away.
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