Though contemporary sailors generally use electronic systems to orient themselves, the sextant is far from redundant. This purest of all nautical instruments, which allows seafarers to accurately determine their global position alone and without the aid of modern technology, is still required equipment on all commercial trading vessels; should electronic systems fail, a sextant can make the difference between disaster and survival.
In this invaluable tutorial for beginning navigators, Dag Pike clearly and efficiently explains the care and use of this ingenious tool which so many generations of seamen and airmen have relied upon and treasured.
Description of the Sextant
The Principle of the Sextant
How to Take Sights
Practical Hints on Taking Sights
How to Read the Sextant
Errors and Adjustments
Sextant Telescopes and Other Accessories
Practical Notes on the Care of the Sextant
The Sextant and Coastal Navigation