{"product_id":"the-nautical-almanac-for-the-year-1981-for-training-purposes-only-9780914025702","title":"The Nautical Almanac for the Year 1981: For Training Purposes Only","description":"Data in this book are no longer valid for navigation. It is preserved in print because many training programs (including USCG and US Navy ) use examples from 1981 to teach celestial navigation. USCG license exams require data from this almanac. These exams also require Sight Reduction Tables, Pub 229, Vol. 2 and a 2102-D Star Finder.\u003cbr\u003e","brand":"Starpath Publications","offers":[{"title":"Default Title","offer_id":50567924744466,"sku":"9780914025702","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/4771\/8930\/files\/img_1b111c4a-606e-4d26-aab5-eb20511f8339.jpg?v=1731932791","url":"https:\/\/surprise-castle.myshopify.com\/products\/the-nautical-almanac-for-the-year-1981-for-training-purposes-only-9780914025702","provider":"Surprise Castle","version":"1.0","type":"link"}