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When you are close to shore you must do pilotage, which precludes
waiting for opportunities for celestial sites.

That doesn't mean you couldn't use a sextant. You just have to turn it
on its side. The angle between two charted objects generates a good
circular LOP. A three-legged protractor can be used if you can see
three charted objects.

It seems to me the accuracy you need from celestial is just enough so
you won't sail past the smalles island you might go to. 5 miles should
be more than good enough.


On Mon, 17 Mar 2003 15:24:45 -0500, George Istok wrote:

>
>In the middle of the ocean, thousands of miles from anything, an error of
>five nautical miles seems insignificant.  Close to shore, even one tenth of
>a mile is significant.  Is the sextant an "off shore" device that should be
>used only when high accuracy is not required?  A what point does one switch
>from off shore to near shore navigation devices?
>



Rodney Myrvaagnes                                   J36 Gjo/a

Chicken hawks unite! Your children won't go anyway.

   

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