✹ inaquascripto on 14 Nov 2005 • Link see this site for how one found ones place on the high seashttp://galileo.rice.edu/sci/obser… .....The Portuguese pioneered the method of navigating by latitude. Ships had to be equipped with instruments (astrolabes, cross staffs) to measure the altitudes of stars or the Sun.....
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inaquascripto • Link
see this site for how one found ones place on the high seas
http://galileo.rice.edu/sci/obser…
.....The Portuguese pioneered the method of navigating by latitude. Ships had to be equipped with instruments (astrolabes, cross staffs) to measure the altitudes of stars or the Sun.....