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Joined: Jan 2001
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Carpal Tunnel
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Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
Here's a URL to a good summary of navigation. The use of the sextant or its prececessors to determine latitude, essentially north-south position was comparatively easy, and had been in use for many years. But the determination of east-west position was far more difficult, depending at first on the ability to make a time-piece highly accurate for long periods of time and not affected by rocking of ship at sea. http://www.boatsafe.com/kids/navigation.htmHere's another fine article about navigation: http://www.allanstime.com/Publications/DWA/IONGPS95Of course now that we have Global Position Units of incredible accuracy, all the above is mostly obsolete.
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10/06/03 01:13 PM
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