Sextants are used to measure angular heights of celestial bodies above the horizon to find the latitude and longitude of the observer. They can also be used on

A modern look at barometers and applications of barometric pressure.

"Emergency Navigation is far more generally applicable than the title indicates. It is, first and foremost, a detailed account of how to find your position anyw

Edwin Hutchins combines his background as an anthropologist and an open ocean racing sailor and navigator in this account of how anthropological methods can be