The free online Nautical Almanac
The world's most complete source of free celestial navigation information
Methods & Forms
Complete Sun Sight reduction Procedure
Complete and thorough step-by-step instructions for performing a Sun sight reduction.
Includes how to plot an LOP.
Plenty of pictures and examples.
Perfect for beginners.
Another version
Complete Sun Sight reduction Procedure
Thorough step-by-step instructions for performing a Sun sight reduction.
For use with an Artificial Horizon or ocean horizon
Formatted differently in appearance than the procedure above.
Does not include how to plot an LOP.
Perfect for beginners.
Complete Star Sight reduction Procedure
Based on Pub. No. 249 Vol. 1
Complete and thorough step-by-step instructions for performing a
star sight reduction based on Pub. No. 249 Vol. 1 (aka- Ho-249)
Perfect for beginners using an AH
How to plot a LOP
Complete and thorough step-by-step instructions that will show you how to plot a LOP
Includes everything you need except tools
Artificial Horizon
You don't have an ocean horizon?
Make a simple Artificial Horizon
Determine Longitude
Meridian by Equal Altitudes
Determine Latitude by Noon-Sight
Obtain your Latitude using the Sun and an artificial or ocean horizon
Determine
Latitude using Polaris
Obtain your Latitude using the Polaris and an artificial or ocean horizon
Sight Reduction Forms
‣ Sun, Star & Planet sight reduction forms using Ocean Horizon or Artificial Horizon
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All
material on this website, except Pub. 229 & Pub. 249, or where
copyright is ...freely ye received, freely give...
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