Sextant

In the tradition of Dava Sobel's Longitude comes sailing expert David Barrie's compelling and dramatic tale of invention and discovery—an eloquent elegy to one of the most important navigational instruments ever created, and the daring mariners who used it to explore, conquer, and map the world.

Since its invention in 1759, a mariner's most prized possession has been the sextant. A navigation tool that measures the angle between a celestial object and the horizon, the sextant allowed sailors to pinpoint their exact location at sea.

David Barrie chronicles the sextant's development and shows how it not only saved the lives of navigators in wild and dangerous seas, but played a pivotal role in their ability to map the globe. He synthesizes centuries of seafaring history and the daring sailors who have become legend, including James Cook, Matthew Flinders, Robert Fitz-Roy, Frank Worsley of the Endurance, and Joshua Slocum, the redoubtable old "lunarian" and first single-handed-round-the-world yachtsman. He also recounts his own maiden voyage, and insights gleaned from his experiences as a practiced seaman and navigator.

Full of heroism, danger, and excitement, told with an infectious sense of wonder, Sextant offers a new look at a masterful achievement that changed the course of history.

Two hundred fifty years of seafaring history, told through the lens of one ingenious instrument.
Invention and Discovery: Follow the sextant from its revolutionary invention in 1759, tracing how this single tool opened up the world to exploration and accurate mapping.Maritime History: Sail alongside legendary mariners like Captain James Cook, Matthew Flinders, and Joshua Slocum, seeing their historic voyages through the instrument they relied on most.Age of Sail Adventure: Relive harrowing tales of survival at sea, from Bligh’s incredible open-boat journey to Frank Worsley’s desperate navigation for the shipwrecked Endurance crew.Narrative Nonfiction: Discover a story told with an infectious sense of wonder, blending deep historical research with the author’s own firsthand experience as an expert sailor.