Clearly, the most important navigational tool available to sailors before was the Stella Maris.
unhelpful
The sun and the stars.
Amerigo used the Astrolabe and the Quadrant
cell phones and computers (:
Navigational tools such as maps and compasses are essential for hikers to find their way through the wilderness.
hi
He used celestial objects and compass.
Leif Ericson is not known to have used any navigational tools; no compasses, sextants, or maps, yet somehow he knew where he was going. How he and his countrymen accomplished this is still discussed, but not known for certain.
By using navigational tools like map, compass etc.
that is use for write the text or that express the way of the matter
Muslim scientists compiled their knowledge of seasonal weather, tides, prevailing winds, sea currents as well as astral-navigation to create navigational tools. These tools included astronomical tables and navigational tables for navigators. They are responsible for the invention of the Astrolab, as well as innovations in cartography.