Sailors used turtles as a supply of fresh meat because, when they ran out of meat, turtles are the only supply of meat in the ocean that don't have a high level of mercury in their blood (which can cause someone to get sick or die).
What points did sailors use to navigate
The same what sailors use as telescopes. The words are the same (Within reason). Sailors are not pirates.
how the navigators and sailors use compass to find direction
they use them to give signals
fish
They use their fins like most turtles
As a compass.
The type of map used by sailors is known as a chart. A pilot would use an aerial map or chart.
Turtles use their claw to rip apart vegetables and fruit. They are also used to borrow in the dirt.
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.
how they use the compass it so they won't get lost