Sextants use a similar premise to astrolabes ... but this was very difficult to use on the deck of a moving ship.

The approximate location of Endurance was logged by the ship’s captain, Frank Worsley, using a sextant and a theodolite at the spot where she eventually sank in 1915, after becoming trapped and ...

The fact is often overlooked that as the sextant is a double-reflecting instrument ... when hung to the bulkhead or other fixture of a ship, do not prevail when it is suspended on an instrument ...

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 ...

There's nothing mystical or complicated about a sextant. All it is is a device that measures the angle between two objects. The sextant makes use of two mirrors. With this sextant, one of the ...