John C. II Hill

…the art and science of nautical navigation for both amateur and veteran navigators.
seafarers' choice for more than three-quarters of a century. It blends the traditional navigation techniques first compiled by Benjamin Dutton in 1926 with technological marvels of the twenty-first century to authoritatively cover all phases of surface navigation. For example, while the book acknowledges that many navigators still peer into the skies through sextant telescopes, it also helps them take full advantage of man-made Global Positioning System (GPS) satellites.
Valued as both an indispensable quick reference and a comprehensive text, Dutton's makes accessible such foreboding subjects as spherical trigonometry through the use of step-by-step explanations and examples that encourage practical use.
…numerous charts, tables, b/w and some color illustrations, appendices, index, followed by 26-pages section of Nautical Charts, Symbols and Abbreviations used by the U.S. Lake Survey, U.S. Coast and Geodetic Survey and U.S. Navy Hydrographic Office;… (plus d'informations)