Sextant - Guided by the Stars 20%OffWatches © National Maritime Museum

© National Maritime Museum

5 m wide and they are extremely impressive to see in person

This advertisement celebrates the ship’s reputation for the fast passage in the wool trade

This chrome-plated skeleton wrist watch from the Royal Observatory

Henry VIII dispatches a Mauritanian diver to salvage lost treasures from the Mary Rose

Sextant - Guided by the Stars 20%OffWatches © National Maritime MuseumIn 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. This is the story of an instrument that changed the world. In prose as crisp as the books subject, David Barrie tells how and why the sextant was invented;