For those who have always wondered how and why celestial navigation works, and for those of you who once used to know but now feel the need for a quick refresher, John has the answers. Here’s an explanation of the underlying theory, how it has developed over the years, a demystification of all the specialised words that are used, and a review of the practical aspects of celestial navigation from a small boat, including the calculations necessary to turn your hard won sight into a position line. Illustrated with diagrams, photos, sextants and almanacs, this is a whistle stop tour of how to find your position at sea without electronics.
Individual lecture tickets: Members £4.00; Non-members £7.00
Season tickets available - contact Secretariat for details
Lectures and talks start promptly at 19:00hrs