A compass tells sailors which direction they are going in (North, South, East, or West). This helps the sailors not to get lost and to keep on track to their destination.
What points did sailors use to navigate
with the help of star
The stone used by early sailors as a primitive compass was called a lodestone. Lodestones are naturally magnetized rocks that were used to help sailors navigate by aligning with the Earth's magnetic field.
May be, it is compass.
it told them which direction they were going.
That device would be a compass!
a compass
how the navigators and sailors use compass to find direction
how they use the compass it so they won't get lost
how navigators and sailors
the compass