Have You ever noticed the exponential nature of the growth of distances on the Nav Map? In WCIV, at least, I can get several thousand clicks further away from a Nav point simply by turning the nose about 20-25 degrees in any direction... THAT seems strange. The rules of triginometry do not support this shift, unless the klick is some sort of representative exponential distance function, which could explain a lot of things. In any case, the speed scale doesn't seem linear to me for a lot of reasons...