3 résultats

Modern up-to-date navigation: position finding by the improved "Sumner" method contrasted with the new navigation (Marcq St.Hilaire System), and the old "Sumner" method

Tables of calculated hour-angles and altitude azimuth table 30°N. to 30°S. Ex-meridian tables 70°N. to 70°S. Calculated reductions and azimuths of 30 bright stars from 1 hour to 3 hours from meridian 64°N. to 60°S

Tables for azimuths, great-circle sailing, and reduction to the meridian, with a new and improved "Sumner" method: latitudes 85° N. to 85° S., declinations 85° N. to 85° S : also other useful navigational tables, with numerous examples of double altitudes, equal altitudes, azimuths, etc.