The Mariner's New Daily Assistant; with a Method of Finding the Latitude by Meridian Altitudes; and a Journal of a Voyage from London Towards Madras . PDF Download

Author: James Griffin
Publisher: Rarebooksclub.com
ISBN: 9781230151601
Category :
Languages : en
Pages : 62

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Book Description
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1844 edition. Excerpt: ... 19 W. Diff. Lat. 796=13 16 1040 4 57=297 miles With the meridional difference of latitude 1040, and difference of longitude 297, the course is'S. 160 W., with which, and the proper difference of latitude, the distance is 830 miles. The above courses corrected for lee-way and variation, will be found as in the following Traverse Table. As the ship is to-day of a considerable distance from the land, the bearing and distance to Porto Santo must be sought for. 1 Lat. in obs. 45 10' Mer. parts 3044 Long. in obs. i2i6'W. Lat. Porto Santo 33 3 Mer. parts 2103 Long. Porto Santo 16 19 W. Diff. lat. 727 = 12 7 Mer. diff. lat. 941 Diff. of longitude 4 3 = 243miles With the meridian difference of latitude and difference of longitude the true course is found S. 14o W., with which, and the proper difference of latitude, the distance is found to be 750 miles. Hence the course per Compass to be steered on is S.W. byS. J W. The above courses corrected for lee-way and variation, with their corresponding distances, will be found as in the following Traverse Table. This day the ship appears to be approaching the coast of Spain, hence her bearing and distance from Cape Finisterre is required, as it being the most projected point of the land to the westward. Lat. in obs. 44 10' N. Mer. parts 2960 long. in obs. 12 4/ W. Lat of C. Finist. 42 56 N. Mer. parts 2851 long.C.Finis. 9 16 W. Diff. lat. 74= 1 14 Mer. diff. lat. 102 diff. long. 3 3j=?2ii With the meridional diff. of lat. and diff. of long., the course will be found S. 64o E., with which, and the proper diff. of lat. 74, the distance from the Cape will be found 169 miles. It appears by this day's log, that the ship was lying-to from midnight to 4 A.m., therefore the middle point between those on...