In rec.arts.sf.science message <cbm0p3lid4ik03qndskjvedqmc0eked0mn@[EMAIL PROTECTED]
>, Thu, 17 Jan 2008 17:54:26, John Schilling <schillin@[EMAIL PROTECTED]
>
posted:
>
>No; it was replaced by better methods in the *15*00s. Specifically,
>the use of the astrolabe, octant, and cross-staff to measure and track
>celestial latitude. This was SOP for virtually all oceanic navigators
>by 1600, and it was vastly superior to dead reckoning.
>
It may be in the USC region, wherever that is. In European parts it is
limited by the need to be able to actually see something celestial
sufficiently often, exacerbated by the complex geography of the seaways
and the versatile weather.
--
(c) John Stockton, Surrey, UK. ?@[EMAIL PROTECTED]
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