They wouldn't have had to depend on the stars for navigation. If the sky were cloudy, they wouldn't have been able to use a sextant. GPS and accurate maps would help them avoid obstacles.
John Hadley and Thomas Godfrey independently built the octant (which became the sextant later)
i guess planets
i guess planets
Nobody knows where the sextant was invented... It is possibly invented where a English people live. like probably Great Britain or Europe. --..................................--
The stars or a sextant or GPS or radar or sonar ( underwater)
They wouldn't have had to depend on the stars for navigation. If the sky were cloudy, they wouldn't have been able to use a sextant. GPS and accurate maps would help them avoid obstacles.
the Mercator map
He was a sailor so he would use tools that the spanish or Portugal Navigators would use to repair the ships so he would use any tools to help get the sail boats out to sea. He was a sailor so he would use tools that the spanish or Portugal Navigators would use to repair the ships so he would use any tools to help get the sail boats out to sea. He was a sailor so he would use tools that the spanish or Portugal Navigators would use to repair the ships so he would use any tools to help get the sail boats out to sea.
Ancient mariners used tools called an astrolabe, a sextant, and a quadrant. These instruments were used in conjunction with celestial bodies, sunrises and sunsets.
Astrolabes and maps
you can find sextant on history.com
you use a sextant to navigate.
A sextant is an instrument used to measure the angle between two visible objects. It is primarily used as a navigational instrument to determine the elevation of a celestial body above the horizon thereby allowing the observer to calculate a line of position (LOP) on the surface of the earth. With only one LOP, a navigator can be sure that his position is on that line somewhere, but he cannot know for sure where on that line he is. By combining additional LOPs (triangulation), navigators are able to determine their exact latitude and longitude.
you draw a sextant by looking at googler in the images.
the sextant helped me navagate my way to alaska
Muskogee Navigators was created in 1909.