NAVIGATION

Partim 2

Prof. Capt. M. Dauwe

Student’s Workbook

Table of Contents

Click on an item coloured blue to see its content and further

Cover

Course Objectives ….. 2

Training Objective ….. 3

MODULE 1. Times and Hour Angles

1. References …. 4
2. UT/GAT/Time equation ….. 16
3. LAT/LMT ….. 22 
4. ZT/ZD ….. 24
5. ST/Legal Time ….. 26
6. WT ….. 30
7. Corrections to time ….. 30
8. Syntax times ….. 33
9. GHA ….. 34
10. LHA/P ….. 38
11. SHA ….. 39
12. Relation between time and hour angle ….. 39
13. Syntax hour angles ….. 40

MODULE 2 Traditional astro-position

1. Basic principle of the position line ….. 41
2. The intercept ….. 48
3. Azimuth ….. 52
4. Amplitudo ….. 60
5. Determination of compass error ….. 63

MODULE 3 Astro-position spécial cases

1. True latitude ….. 64
2. True latitude with Polaris ….. 69
3. Ex-meridian ….. 75
4. True longitude ….. 81

MODULE 4 Positioning (fix détermination)

-- Graphic solution of the astro-fix ….. 87
-- Noon position and its value in navigation ….. 90
-- Morning/evening position ….. 90°
-- Pagel method ….. 90

MODULE 5 Rise/set and twilight

-- Theoritical rise and set ….. 92
-- Visible rise and set ….. 95
-- Period of twilight for observations ….. 97

MODULE 6 Special diagrams

-- Eclipses ….. 104
-- Meridian passage planets ….. 115