Get Step-by-step Sextant Users Guide By Andrew Evans - Woodenboatslt

The Step-by-Step Sextant Users Guide by Andrew Evans is designed to simplify the process of using a sextant for celestial navigation. This guide serves as a comprehensive tool to support users of all experience levels as they fill out the necessary navigation forms accurately and effectively.

Follow the steps to fill out the sextant users guide accurately.

1. Press the ‘Get Form’ button to access the sextant users guide and open it in your preferred document editor.
2. Begin by entering the date and local time at the top of the navigation sheet. This is essential for accurate calculations.
3. Take a sextant shot of the sun and note the exact time. Ensure your sextant is properly calibrated and adjust it to ensure the horizon is level.
4. Using the Nautical Almanac, find the geographical position of the sun for the noted time. Record the Greenwich Hour Angle (GHA) and Declination (Dec) in the designated spaces on the form.
5. Consult the Table of Increments and Corrections to refine the GHA for the precise minute and second of your reading. Document this value on the form.
6. Determine your assumed position (AP) and calculate the Local Hour Angle (LHA). This involves basic subtraction using the GHA.
7. Use the Sight Reduction Tables to find the computed height (Hc) and azimuth (Z) values, ensuring these are accurately transcribed onto the form.
8. Make any necessary adjustments to the Hc value for declination by utilizing the Correction Table. Add or subtract this value as instructed and write the new Hc beside it.
9. Calculate the height observed (Ho) by adding the sextant reading with any adjustments made previously. This value should be recorded in the appropriate space.
10. Determine if your actual position is toward or away from the sun based on the comparison between Hc and Ho, then write the result in the form.
11. Plot your assumed position and create lines of position on your plotting sheet according to the calculated azimuth and distance.
12. Repeat the process after a few hours to refine your location further, especially if in motion. Use the new sextant reading to find an updated position.
13. Review the entire form to ensure all calculations are accurate before saving. You may then choose to download, print, or share your filled-out guide.

Start using the Step-by-Step Sextant Users Guide online to enhance your navigational skills today.