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Sight Reduction Worksheet (NAO) Sight Data # Almanac LA Sextant Body Bearing DR Lat (N×S) DR Lo (W×E) SHA GHA h HS IC (on / off +) Ht of eye (m×ft) m s v (+/) (planets, Moon) Dip () Ha Time Date
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How to fill out sight reduction form

How to fill out the sight reduction worksheet:
01
Start by gathering the necessary information such as the date, time, and your assumed position.
02
Enter the celestial body you are observing and its observed altitude.
03
Calculate the intercept, which is the difference between the observed altitude and the calculated altitude.
04
Enter the intercept in the appropriate space on the worksheet.
05
Use the intercept to determine the azimuth.
06
Record the azimuth on the worksheet.
07
Continue this process for all celestial bodies you are observing.
08
Finally, calculate your precise position using the information recorded on the worksheet.
Who needs the sight reduction worksheet:
01
Navigators and sailors who are using celestial navigation methods to determine their position at sea.
02
Pilots who are using celestial navigation as a backup or additional method for navigation.
03
Individuals who are learning or practicing celestial navigation as a hobby or for educational purposes.
04
Any individual or group participating in activities where accurate position determination is crucial, such as research expeditions or offshore races.
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What is sight reduction worksheet?
A sight reduction worksheet is a document used by navigators to record and calculate celestial observations, converting them into usable navigation data.
Who is required to file sight reduction worksheet?
Navigators and mariners, especially those in charge of operating vessels using celestial navigation, are required to file a sight reduction worksheet.
How to fill out sight reduction worksheet?
To fill out a sight reduction worksheet, navigators must input data such as the date and time of observations, celestial body altitudes, observed angles, and other relevant calculations.
What is the purpose of sight reduction worksheet?
The purpose of a sight reduction worksheet is to provide a systematic way to process celestial sightings to determine precise position fixes for navigation.
What information must be reported on sight reduction worksheet?
Information required includes the date and time of the sighting, the celestial bodies observed, measured altitudes, corrections applied, and calculated positions.
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