... ascertained at sea by observing the magnetic bearing of- the sun when in the horizon, or at a given altitude abo-ve it. From this observation the true bearing is found by rules given in nautical astronomy. The difference between the true bearing and... Navigation and Nautical Astronomy - Page 13by H. W. Jeans - 1858Full view - About this book
| H. W. Jeans - 1853 - 314 pages
...these will be more clearly seen in the use of the instruments themselves. THE COMPASS AND LOG-LINE. **to the course steered by compass, to reduce it to...right of the north point of the heavens ; then the** NXW point of the compass card will evidently point to the true north, and every other point on the... | |
| Henry William Jeans - 1868 - 228 pages
...astronomy. The difference between the true bearing and the observed bearing is the variation of the compass. **The method of correcting the course for variation will be more readily understood by means of** a few examples. Suppose the variation of the compass is found to be two points to the east, that is,... | |
| Thomas Liddell Ainsley - 1869 - 450 pages
...charts used in navigation. The method of correcting Compass Courses or Bearings for Variation will be **readily understood by means of an example. Suppose the variation of the compass** ia found to be two points cast, that la, tho needle is directed two points to the right of the north... | |
| Henry William Jeans - 1870 - 288 pages
...astronomy. The difference between the true bearing and the observed bearing is the variation of the compass. **The method of correcting the course for variation will be more readily understood by means of** a few examples. Suppose the variation of the compass is found to be two points to the east, that is,... | |
| Thomas Liddell Ainsley - 1875 - 416 pages
...used in navigation. i The method of correcting Compass Courses or Bearings for Variation will Ъе **readily understood by means of an example. Suppose the variation of the compass is found to be** two points east— That is, the needle is directed two points to the right of the north point of the... | |
| Thomas Liddell Ainsley - 1880 - 482 pages
...charts used in navigation. The method of correcting Compass Courses or Bearings for Variation will be **readily understood by means of an example. Suppose the variation of the compass is found to be** two points East — that is, the needle is directed two points to the right of the North point of the... | |
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