{"product_id":"gps-backup-with-a-mark-3-sextant-all-instructions-and-tables-included","title":"GPS Backup with a Mark 3 Sextant: All Instructions and Tables Included - Book","description":"\u003cspan\u003eOur guiding principle for this booklet was to provide a means of learning and executing a position fix at sea when a vessel has run out of power and all the batteries have been consumed, so there is no GPS available. We wanted a solution that is compact and inexpensive, using tables and procedures that are easy to learn and use. This goal led to our proposing a minimum kit that mariners would not hesitate to add to their gear to cover the unlikely situation it would actually be needed. Mariners who cross oceans in small boats realize they must be self-reliant and cover all contingencies.\u003c\/span\u003e\u003cdiv\u003e\n\u003cbr\u003e\u003cdiv\u003eFor those who do not have the chance to learn the full range of celestial navigation before departure, this booklet and a Mark 3 sextant provide a minimum backup kit that can be used to navigate across any ocean if needed. \u003cbr\u003e\u003cbr\u003eThis book includes a 60-page Almanac of the sun to provide quick and easy solutions for Latitude and Longitude, as well as a unique new method for finding the corrections needed to find Latitude by Polaris, as well as in depth discussion of how to use a Mark 3 plastic sextant with emphasis on reading the angle scales.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eContents\u003c\/strong\u003e\u003cbr\u003e1. OVERVIEW \u003cbr\u003e2. SEXTANT SIGHTS WITH THE MARK 3 SEXTANT\u003cbr\u003e     Reading the Sextant Scales \u003cbr\u003e     Adjusting the Index Mirror\u003cbr\u003e     Index Mirror Adjustment Using Only a Sea Horizon\u003cbr\u003e     Index Mirror Adjustment with a Star \u003cbr\u003e     Index Mirror Adjustment with Cloud Edges\u003cbr\u003e3. TAKING SUN SIGHTS\u003cbr\u003e     Aligning the Sun on the Horizon\u003cbr\u003e4. A COOKBOOK APPROACH TO FINDING POSITION \u003cbr\u003e     Correcting the Sextant Height to get the Observed Height\u003cbr\u003e     Finding Latitude and Longitude From the Sun\u003cbr\u003e     The Recipe\u003cbr\u003e     Finding the Peak Height of the Sun\u003cbr\u003e     Finding the Time of LAN\u003cbr\u003e     Sailing Under the Sun\u003cbr\u003e5. WORKED LAN EXAMPLES\u003cbr\u003e     Latitude Example 1\u003cbr\u003e     Easy LAN Rule\u003cbr\u003e     Longitude Example 1 \u003cbr\u003e     Latitude Example 2\u003cbr\u003e     Longitude Example 2\u003cbr\u003e6. LATITUDE BY POLARIS\u003cbr\u003e     Latitude by Polaris Example\u003cbr\u003e7. PLOTTING POSITIONS AND DR TRACKS\u003cbr\u003e     Setting Up a Universal Plotting Sheet \u003cbr\u003e     Using the Plotting Sheet \u003cbr\u003e     Getting by Without Dividers \u003cbr\u003e8. BACKGROUND INFORMATION \u003cbr\u003e     8.1 Timekeeping in Navigation \u003cbr\u003e     8.2 Lat, Lon, nmi, and DR\u003cbr\u003e     8.3 Adjusting the Index Mirror on Land \u003cbr\u003e     8.4 Predicting the Time of LAN From Your DR-Lon\u003cbr\u003e     8.5 Principles of the Noon Sight for Lat and Lon \u003cbr\u003e     8.6 Universal Rule for LAN\u003cbr\u003e9. GPS BACKUP KIT--THEME AND VARIATIONS\u003cbr\u003e10. REFERENCES\u003cbr\u003e11. TABLES\u003cbr\u003e     Sun Almanac\u003cbr\u003e     Refraction Table, Dip Table, Polaris Table\u003cbr\u003e     Increments Table\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv class=\"pc-book-specs\"\u003e\n\u003ch4\u003eBook Details\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthor:\u003c\/strong\u003e David Burch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePages:\u003c\/strong\u003e 98 pages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 6 x 9 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Paperback\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublisher\/Distributor:\u003c\/strong\u003e Starpath\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished:\u003c\/strong\u003e 2018\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISBN:\u003c\/strong\u003e 9780914025603\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Starpath","offers":[{"title":"Default Title","offer_id":67857112596725,"sku":"STR049","price":22.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0829\/2198\/0149\/files\/STR049_104.jpg?v=1793863362","url":"https:\/\/paracay.com\/products\/gps-backup-with-a-mark-3-sextant-all-instructions-and-tables-included","provider":"Paradise Cay Publications, Inc.","version":"1.0","type":"link"}