With modern GPS, we often don’t think too hard about how to navigate, but GPS does not work very well on the open sea. That is why modern ships are equipped with technology such as radar and a ...

There's no way around it: Celestial navigation using a sextant is a complex and involved process that involves a fair amount of calculating, correcting, referring to tables, knowledge of the ...

The angle between the two objects is then read off the scale. What makes a sextant so useful in navigation is its accuracy. It can measure an angle with precision to the nearest ten seconds.