Nautical almanac data for the sun and selected stars valid until 2050, plus easy to use, concise sight reduction and altitude correction tables. Plus work forms to make the process even easier. A concise one-book solution for celestial navigation.......

Nautical almanac data for the sun and selected stars valid until 2050, plus easy to use, concise sight reduction and altitude correction tables. Plus work forms to make the process even easier. A concise one-book solution for celestial navigation.......