Navigate by the Stars — Without GPS, Without Guesswork For centuries, sailors crossed oceans using nothing but a sextant, an almanac, and the mathematics of the sky. That skill is not lost — and this book puts it back in your hands. Celestial Navigation is a complete, practical guide written by a professional ship captain with real offshore experience. It covers everything you need to go from zero knowledge to confidently plotting a celestial fix at sea — explained clearly, illustrated precisely, and structured the way navigators actually think. You will learn how the celestial sphere works and why it matters. You will understand GHA, LHA, and declination — not just as formulas, but as geometric relationships you can visualize. You will work through the complete St. Hilaire Intercept Method step by step, from raw sextant angle to a plotted Line of Position. You will master noon latitude by meridian passage, the most reliable and elegant fix in celestial navigation. And you will learn to combine multiple sights into a three-body celestial fix, resolve the cocked hat triangle, and determine your best position with confidence. Sextant corrections are covered in full — index error, dip, refraction, and semi-diameter. Almanac use, HO table interpolation, and assumed position selection are all explained with worked examples you can follow at the chart table. Six professional technical diagrams illustrate the key concepts visually. Every chapter builds on the last. Nothing is assumed except basic arithmetic. Whether you are preparing for STCW Officer of the Watch certification, the RYA Yachtmaster Offshore exam, USCG celestial navigation requirements, or an offshore passage where GPS backup is not an option — this book gives you exactly what you need. 95 pages. No filler. Pure navigation.