Let us call it intermediate speed, that is, a speed at which wave making resistance will be same as that in deep water. Am I making myself clear or not? If I am not making myself clear, please ask me. What I am saying is that, if the ship had a wave making resistance R w at a speed V in deep water, then it will have the same wave making resistance R w at a lower speed V I in shallow water of left h. Is that clear? Have you understood? Shall I do a diagram?