Once known as Hartley18
Join Date: Aug 2007
Location: Melbourne, Australia
Thanked 85 Times in 85 Posts
Rep Power: 11
Did a little sleuthing. Per Wikipedia, Harrison didn’t invent his H5 chronometer until 1773. The Royal Navy didn’t widely distribute them amongst the fleet until 1825. Up until that point, navigators were using the very much less accurate lunar method for determining longitude.
Terribly minor nit-pick, but just to correct the record here: The Lunar Distance Method
is a far more
accurate way to determine longitude than using the chronometers of the day - after all, once they were invented, it was the Lunar Distance Method they used to adjust the chronometers!
..the only downside is it takes a few pages of extremely complicated (at least they are to me!) maths calculations to get a result. But then I was never very good at maths.
A bad day on a boat beats a good day in the office
Last edited by Classic30; 05-17-2011 at 09:46 PM.