Re: (FT) centimeter scale

We minimize the human error in moving ships by using a hex grid.

We don't limit ourselves to the hexes, but each of the clock facings is
either parallel or perpendicular to a series of hex edges, so those 10
degree errors are reduced (just don't make a 30 degree error).

Other problems creep in when people can't read a ruler, or rulers are
inaccurate (bent or incorrect lengths).