I like how they are aiming for 9.75% return on assets.
Take a look at Darwin:
Darwin Terminal Nav charges
Year 1: 18.78%, return on assets.
So of course in order to achieve the 9.75% they're after they will lower the charges right..... WRONG!
Year 2: from $1.88 per tonne to $2.26 per ton, giving them a return of 19.88%