{"product_id":"9780160937415","title":"Nautical Almanac for the Year 2018","description":"\u003cbr\u003e For over 150 years the United States Nautical Almanac Office has published \u003ci\u003eThe Nautical Almanac\u003c\/i\u003e, first as part of the \u003ci\u003eAmerican Ephemeris and Nautical Almanac\u003c\/i\u003e, and then on its own, to provide the US Navy with a convenient form of the astronomical data used for celestial navigation. This book is still the standard resource for marine celestial navigation for the U.S. Navy. The book is produced in collaboration with Her Majesty's Nautical Almanac Office in the UK. That Office maintains the copyright on the material it produces.\u003cbr\u003e \u003cbr\u003e\u003ci\u003eThe Nautical Almanac\u003c\/i\u003e contains the following data tabulated at hourly intervals to a precision of 0.1 arcminute: the Greenwich hour angle and declination of the Sun, Moon, and navigational planets; the Greenwich hour angle of Aries; positions of the navigational stars; rise and set times of the Sun and Moon for a range of latitudes; and other data. Each edition also contains a sight reduction table; sight reduction formulas; and various correction tables for sight reduction. There is a useful concise sight reduction form at the back of the book. \u003ci\u003eThe Nautical Almanac\u003c\/i\u003e is available several months in advance of its edition date. Related products: Check out our \u003cb\u003eNavigation by Water resources collection\u003c\/b\u003e here: https:\/\/bookstore.gpo.gov\/catalog\/navigation-water\u003cb\u003eAlmanacs \u0026amp; Navigation Guides\u003c\/b\u003e area available here: https:\/\/bookstore.gpo.gov\/catalog\/almanacs-navigation-guides\u003cb\u003eUS Army Corps of Engineers (USACE) Navigational Charts collection\u003c\/b\u003e can be found here: https:\/\/bookstore.gpo.gov\/catalog\/usace-navigational-charts","brand":"United States Dept. of Defense","offers":[{"title":"Default Title","offer_id":47014708150512,"sku":"9780160937415","price":49.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9780160937415","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}