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Warning -- Use these techniques at your own risk. They have been tested and used successfully but you're responsible for yourself. We take no responsibility if you sink your boat. Dead Reckoning Traditionally dead reckoning problems are solved graphically on a chart. But often charting inaccuracies occur and in higher latitudes you have to use plotting paper to get the proper scales. This technique uses only two tables and some multiplication to solve dead reckoning problems with high accuracy. The tables easily convert distance traveled on a heading to your new Latitude and Longitude. You should be aware there are some other errors that occur when dead reckoning and the American Practical Navigator has a good chapter about the graphical technique using plotting sheets. How to
Dead Reckon Using Tables Navigation by Noonsite Technically one of the easiest celestial navigation problems that everyone should know how to solve. If you follow the links you can learn how to do a noonsite observation, generate your own celestial tables for the noonsite and download a copy of all the sextant altitude corrections you'll need. How
to Navigate by Noonsite Emergency Navigation Caught without tables or a sextant? The American Practical Navigator has some interesting short-cuts to finding your position with approximations and improvised tools. You can read their chapter on emergency navigation for more information. If you're thinking of buying a copy of the Nautical
Almanac. I suggest you consider
Reed's Astro
Navigation Tables. They are much more compact and I find them
simpler to use, however they are not traditional and won't match up to your
text books exactly. |