{"product_id":"admiralty-manual-of-navigation-vol-2-astro-navigation","title":"ADMIRALTY Manual of Navigation Vol 2 - Astro Navigation 2018","description":"This includes:\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eAstro Navigation Theory\u003c\/li\u003e\n\u003cli\u003eUse of UKHO's NavPac 4 Calculation Software\u003c\/li\u003e\n\u003cli\u003eProgrammable Calculator Methods\u003c\/li\u003e\n\u003cli\u003ePractical use of the Marine Sextant\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eSatellite technology enables almost every mariner to use electronic navaids to fix their position on the oceans. however, electronic systems can be disrupted by errors in a satellite or its ground control systems, defects in shipboard equipment or interference with satellite signals.  the celestial chart therefore remains the most reliable tool for mariners navigating out of sight of land.\u003cbr\u003e\u003cbr\u003eAuthor: Alastair Harris\u003cbr\u003eAuthored by The Royal Navy\u003cbr\u003eSKU: P03047","brand":"Boat books Australia","offers":[{"title":"Default Title","offer_id":52957823730028,"sku":"P03047","price":495.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/1920\/5996\/files\/030471_18-e1530679292790.jpg?v=1764813958","url":"https:\/\/www.boatbooks-aust.com.au\/products\/admiralty-manual-of-navigation-vol-2-astro-navigation","provider":"Boat books Australia","version":"1.0","type":"link"}