Polaris, the North Star.
donno?
Well, on MY planet, there is only one moon. Not sure about your planet. Here the sailors generally do not navigate by the moon- but they do use stars. In the north, sailors use the Pole Star, also called the North Star or Polaris. In the far south, you can't see Polaris, so sailors use other groups of stars, like the Southern Cross.
Sailors needed to know about stars for navigation purposes. By observing the positions of stars in the night sky, sailors could determine their location and direction at sea, helping them to navigate safely to their destinations.
What points did sailors use to navigate
Sailors used an astrolabe to measure the angle of the sun or a star above the horizon. By knowing this angle and the current date, they could calculate their latitude at sea. This helped them navigate and determine their position on the open ocean.
a compass
The invention that helped sailors steer without seeing the sun or stars is the compass. Compasses use the Earth's magnetic field to show sailors which direction they are heading, helping them navigate even when visibility is poor.
the answer is IT HELPED TO PROVE THAT THE EARTH IS ROUND!!!!!!
With Compasses and maps
The first people to navigate by the North Star and the Big Dipper were likely early seafarers, such as Polynesian navigators and ancient sailors. By observing the position of the North Star (Polaris) and the orientation of the Big Dipper, they could determine their direction and navigate accurately over long distances.
Earth is round
Compasses help sailors determine the direction in which they are traveling by detecting the Earth's magnetic field. Astrolabes were used by sailors to determine the altitude of celestial bodies, such as the sun or stars, which helped them navigate by calculating their position relative to these reference points.