This volume of the American Practical Navigator, a foundational text for maritime navigation, aims to provide comprehensive guidance on celestial and electronic navigation techniques. Building upon decades of accumulated knowledge, it details the methods and calculations necessary for determining a vessel's position at sea, covering both traditional astronomical observations and modern navigational aids.

This edition of the American Practical Navigator is recognized as a definitive resource for mariners, offering a blend of historical and contemporary navigation methods. Its detailed approach ensures that both seasoned professionals and aspiring navigators can find the information needed to safely and accurately guide a vessel. The text is structured to be both a practical manual for immediate use and a comprehensive reference for deeper study.