The book The Navigators Pocket book was written by author Howard Patterson Here you can read free online of The Navigators Pocket book book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Navigators Pocket book a good or bad book?
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- The deck slate on which the officer of the watch keeps a record of the ship's speed, course, etc. , and from which the smooth log-book is made up. To enter anything on the slate is to " log " it. LONGITUDE. The distance of a place on the earth's sur- face east or west of some given prime meridian. Longitude is measured in degrees, minutes, and seconds, counting as high as 180 east and 180 west, thus completing the circumference of the globe. The meridian of 180 east and the meridian of 180 we...st are represented by the same line, so that a vessel may be on both at the same time. Longitude may be defined as the angle at the pole contained between two meridians, one passing through the place in question and the other through some con- ventional point from which longitudes are reckoned. (See Prime Meridian. ) The following rules furnish the methods for finding the longitude of the ship by observations of the sun, moon, planets, and stars. Longitude by Equal Altitudes of the Sun. Observe an A.
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