In all reality, celestial navigation
is not something you can rely on for coastal navigation
. Any clouds, fog
or particulates in the air will prohibit your ability to get even one good LOP.
Next, I noticed that you are sailing some pretty small boats; VERY VERY hard to get an accurate sight on a 40 to 50' boat under sail in lousy weather
, let alone something in the 20' range. And you need some books
; don't let them get wet!
For the price
of a good sextant
, a very accurate time keeping system (4 seconds error in time is 1 mile in navigation) sight reduction tables & a few stopwatches, you could probably buy a couple of back-up gps
Don't get me wrong, I think it's admirable that you want to learn to navigate with a sextant
, but do not think that it is a reliable back-up for electronic navigation
I circumnavigated from 1970-1979 & other than RDF, I used celestial with DR. There were periods of days (6 days from New Caledonia
into the Great Barrier Reef) when I could not get a sight. Going up the Red Sea, there was so much sand & heat from the deserts that celestial was useless.
Do not fall into the electronic time giving equipment
fiasco. After a hurricane
in the SoPac we lost
& we had no chronometer, therefore, we had no time!!!! Not smart! A chronometer is not a perfectly accurate clock; it is a time piece with a consistent predictable error.
Some of these "new fangled" inventions are truly lifesavers, use them with confidence, and back-ups of course.