Pusan tends to be a fast port in general wrt pilotage. They might have failed to adequately adjust for these much larger ship.
“Are you in a hurry captain?” That’s what the pilot asks when they board. Or so I’ve been told.
If the error in speeds was plotted would it be a Rayleigh distribution?
Say 1 is the perfect speed and navigators want to err on the side of safety by this graph the number of ships coming in twice too fast is more than zero. In practice the x-axis would have to be adjusted but the general shape of the curve seems right.
Rayleigh distribution is familiar to mariners from the distribution of wave heights.
