{"product_id":"celestial-navigation-book-gerry-smith-9780713658125","title":"Celestial Navigation","description":"Celestial Navigation is a self-teaching book designed for those with a grounding in coastal navigation. Dealing first of all with the broad concepts of astro-navigation, Gerry  Smith takes the reader through the basic skills needed to take sun  sights and then plot a position. At each stage of learning there is a  summary of the facts as well as exercises to test understanding, before  the reader progresses to the next stage. Gerry Smith's carefully though out course will be greatly appreciated  by all those who have been traumatised by the usual complex books on  celestial navigation. 'Very user friendly' Classic Boat","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49557703590161,"sku":"GOR002091841","price":16.99,"currency_code":"USD","in_stock":true},{"title":"US \/ GOOD \/ SBYB","offer_id":50557675536657,"sku":"CIN0713658126G","price":6.22,"currency_code":"USD","in_stock":false},{"title":"GB \/ GOOD \/ INTERNAL","offer_id":51438383366417,"sku":"GOR006546100","price":16.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/0713658126.jpg?v=1751328571","url":"https:\/\/www.worldofbooks.com\/products\/celestial-navigation-book-gerry-smith-9780713658125","provider":"World of Books ","version":"1.0","type":"link"}