I tried designing a Queen Elizabeth class battleship, and found it didn't work in Rick Robinson's program

I thought it would be instructive to try out a real ship in Rick Robinson's "Spring Style" program. I immediately thought of the Queen Elizabeth class. I was disappointed that it didn't work, when entered in a straight-forward way. The program claimed about strength and stability, plus the calculated speed was too high: 26 knots. The real speed should be more like 24 knots. My program is more accurate than what he is doing. He also doesn't use prismatic coefficient, which is an essential factor (he is using block coefficient, instead, which isn't something that you use directly for speed calculations).