Thread: Navigation

two little jingles - never forgotten them- true virgins make dull company = true variation magnetic deviation compass - and error east compass least = so one deducts 22 degrees of variation ( or whatever it is at the time ) - some mix up variation and deviation - variation= the annual difference in the movement of the earths north pole - deviation= error in a compass due to the presence of other magnetism dont use now except for getting around bloody Auckland - keep myself lined up so I sorta know where I am