This volume of the American Practical Navigator, commonly known as Bowditch, serves as a foundational reference for celestial and terrestrial navigation. It presents the essential mathematical principles, tables, and methods required for safe and accurate maritime navigation. The work is structured to guide navigators through the complexities of determining position at sea using both traditional astronomical observations and modern techniques.

As a long-standing and authoritative text in maritime navigation, the American Practical Navigator is recognized for its comprehensive coverage and rigorous approach. This volume, like its predecessors and successors, is considered an indispensable resource for professional mariners, naval officers, and serious recreational sailors. Its detailed explanations and extensive tables provide the technical depth required for accurate position fixing and voyage planning in diverse conditions.