Today travellers by land, sea and air take accurate navigation for
granted but it was not always thus.
The author, a highly experienced sailor, sets out to record the
development of navigational techniques from the earliest time, five
millenniums ago. As explorers started to venture offshore into the
unknown they had to rely on the sun and stars for direction. From this
pioneers turned to mathematics, astrolobes, sextants and increasing
accurate clocks to measure latitude and later longitude. More recently
major breakthroughs with electronic navigation, GPS and other satellite
systems have revolutionised travel.
Focusing primarily but not exclusively on marine navigation, the author
weaves a fascinating course through the successes and failures of
mankind's quest to explore his world. The result is a thoroughly
entertaining and informative work which has no rival.