Which is all very logical and pre-GPS oriented. I think the world have moved on
Yes logical and still used inside the GPS devices
SI units is a good idea, however they selected the wrong base measures (what is the meaning of 1m, I guess some old french length measure). If 1 m would be 1.825m, I guess the whole word would have already converged to the SI system.
So we will always measure distance in nm and speed in kts as long the earth turns because it is logic.
