Using an example, this video shows how to calculate the distance, initial course, final course, and the position of the vertex along a great circle course.
This video also shows how to calculate the position of the intermediate points located along a great circle track.
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Contents of this video will benefit mariners preparing for exams (written and oral examinations).
Mariners will also benefit by watching the following videos:
Great circle sailing: https://www.youtube.com/watch?v=HE8gBGWKnz8&list=PLjZi6sSb2w5bPRRU1h-uno-vGhQrnMbPa&index=40
Great circle sailing (example 2): https://www.youtube.com/watch?v=mvd2756ZWrw&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=7
Great circle sailing (example 3): https://www.youtube.com/watch?v=49yZmcjzZNw&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=9
Great circle sailing (Example 4): https://youtu.be/nDXh0lkAiHg
Determining the final (and Initial) course angle: https://youtu.be/YJTN0Mcetuw
Composite great circle sailing: https://www.youtube.com/watch?v=7OoQDUudU30&list=PLjZi6sSb2w5bPRRU1h-uno-vGhQrnMbPa&index=48
Composite great circle sailing (Example 2): https://www.youtube.com/watch?v=leUxaVpwOBY&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=6
Calculate departure along a parallel of latitude: https://www.youtube.com/watch?v=R99k4jHcW9U&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt
Calculate d’lat and d’long (Plane sailing): https://www.youtube.com/watch?v=k0GjV3nCw3c&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=2
D’lat and m’lat calculation: https://youtu.be/kw7QORr8OaE
Plane sailing (example 1): https://www.youtube.com/watch?v=lBK2eRJ3h3w&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=3
Plane sailing (example 2): https://www.youtube.com/watch?v=loV_OObsmMA&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=4
Plane Sailing (example 3): https://youtu.be/beUHPpe98lc
Plane Sailing (example 4): https://youtu.be/IAxPKUlsTu0
Mercator sailing (Example 1): https://www.youtube.com/watch?v=_HGmr22V668&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=5
Mercator sailing (Example 2): https://www.youtube.com/watch?v=RaZylnXSnVM&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=8
Mercator Sailing (Example 3): https://youtu.be/Z3fXBcwYRes
Mercator Sailing (Example 4): https://youtu.be/ndQLKh1hE30
Calculate mean latitude: https://www.youtube.com/watch?v=iMUazHWo4uY&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=10
A trick to remembering formulas in sailings: https://youtu.be/mr5cPrtHxj0
Compare plane sailing to mercator sailing: https://youtu.be/OXX6XeQQCAs
Day’s work (wind and leeway): https://www.youtube.com/watch?v=blMCIVDL7Vk&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=11
Horizontal sextant angles: https://www.youtube.com/watch?v=XJDKHhtcxMU&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=12
The use of position lines: https://www.youtube.com/watch?v=HlKFaIaaZWs&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=13
Rising and dipping of lights: https://www.youtube.com/watch?v=bxb9-IoG3PI&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=14
Horizontal angles: https://www.youtube.com/watch?v=ECaNZxPVuXc&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=16
Compass error: https://www.youtube.com/watch?v=7sMLgx62c4c&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=17
Tidal window calculations: https://www.youtube.com/watch?v=eq_4LHi1kvU&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=18
Secondary port tide calculations: https://www.youtube.com/watch?v=tv_oYTEccg0&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=19
Explaining interpolation of second port tide calculation: https://www.youtube.com/watch?v=y783OI-tjh0&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=21
Simplified harmonic method of tide calculation: https://www.youtube.com/watch?v=S3NvhprJdfM&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=24
Simplified harmonic method (Theory): https://www.youtube.com/watch?v=WBFefAMc-ZE&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=29
Tides (General Theory): https://www.youtube.com/watch?v=f0e2hQUE8D4&list=PLjZi6sSb2w5bgOQ9xEL99Z8LBCyKBoNXt&index=20
PZX triangle: https://www.youtube.com/watch?v=jzp5b-51N5g&list=PLjZi6sSb2w5bPRRU1h-uno-vGhQrnMbPa&index=35
Venus as morning or evening star: https://www.youtube.com/watch?v=VOQVDHH3zzQ&list=PLjZi6sSb2w5bPRRU1h-uno-vGhQrnMbPa&index=38
Circumpolar bodies (Theory): https://youtu.be/iXOvsp_Xql4
Circumpolar bodies (worked example): https://youtu.be/NbB_58Yx9tY