The Cayman Islands National Museum recently received a historic sextant, almanac and a spyglass belonging to the late Captain ...

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 ...

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 ...

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.

The “Abridged Nautical Almanac” already gives to the ... which is that appropriate to the conditions of observation with a bubble sextant in aircraft. This lower degree of accuracy gives ...