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Columbus's Voyage
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At the end of the fifteenth century, celestial navigation was just being developed in Europe, primarily by the Portuguese. Prior to the development of celestial navigation, sailors navigated by "deduced" (or "dead") reckoning, hereafter called DR. This was the method used by Columbus and most other ....
Middle of essay
.... the ship was moving very slowly, since the chant would run to the end before the flotsam had reached the aft mark.
Speed (and distance) was measured every hour. The officer of the watch would keep track of the speed and course sailed every hour by using a toleta, or traverse board. This was a peg-board with holes radiating from the center along every point of the compass. The peg was moved from the center along the course traveled, for the distance made during that hour. After four hours, anot.... |
| Number of words: 1046 |
Approximate pages: 4 |
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