{"product_id":"ocean-navigator-book-kenneth-wilkes-9780713653045","title":"Ocean Navigator","description":"An on-board reference for ocean passagemakers containing everything the ocean navigator needs to work out: sight reductions for the sun, the moon, the four navigable planets, the 57 selected stars and Polaris. The book covers the RYA Ocean Yachtmaster syllabus: the use of the sextant; taking sights in heavy weather; planning an ocean voyage; hyperbolic and satellite navigation; and the use of navigational calculators and graded exercises with model answers.","brand":"WoB","offers":[{"title":"GB \/ WELL_READ \/ INTERNAL","offer_id":49608910962961,"sku":"GOR004766574","price":10.99,"currency_code":"USD","in_stock":false},{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":50331273986321,"sku":"GOR004640752","price":10.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/0713653043.jpg?v=1751231269","url":"https:\/\/www.worldofbooks.com\/products\/ocean-navigator-book-kenneth-wilkes-9780713653045","provider":"World of Books ","version":"1.0","type":"link"}