Download or read book Sight Reduction Tables for Marine Navigation written by Nga and published by CreateSpace. This book was released on 2011-06-20 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sight Reduction Tables for Marine Navigation (Pub 229) is published in six Volumes, each of which contains two eight-degree zones of latitude with a one-degree overlap between Volumes. They are designed to facilitate the practice of celestial navigation at sea. The tables are primarily used with the Intercept method of sight reduction by entering arguments of latitude, declination, and Local Hour Angle and obtaining tabulated altitudes and azimuth angles. The tables are prepared and published by NGA on an as needed basis.