This guide is intended for professional mariners and for those studying for the US Coast Guard license examinations. The result of the author’s experience teaching these subjects for many years, it addresses every major navigation problem with a short, accurate description, definitions of terms, and worked out examples. To help the reader the author has implemented real handouts from his classes, intended for students, as references, including worksheets for celestial and tide calculations. Vital information of all types is provided here, including a crash course in celestial and terrestrial navigation, magnetic deviation tables for calculating compass error, formulas for determining leeway, and tips for navigating close to home and across the oceans. Professor Palmiotti’s expertise, earned through his vast experience as mate and captain, is now available, here, in compact form, for both veteran seamen and officers in training.