Simply put a great circle is a straight line on the globe. A straight line on earth will form a circle all the way around the earth, with the centre point in the middle of the planet.
A special period inside the twilight period, which is used for celestial navigation.
From which way does the wind blow? All points of the compass.
The first time you get the command of a sail ship and you are expected to perform a manoeuvre by your self is a exiting moment, quite stressful with all the senior officers watching behind your back.
For centuries the sextant was the primary tool for navigation. Until the invention of radio and later satellite navigation. But how does a sextant work?
Navigational lights are lights placed on buoys, lighthouses, light ships, beacons and structures. with the purpose to aid in the navigation of ships, boats and other vessels.
A stone that can help you navigate the oceans. Is it magical or not?
