Motor ships

The Admiral Graf Spee had machinery that generated 54,000 HP with a weight of 1,648 tons. That is a HP/weight of machinery ratio of about 32.77 HP/ton. The machinery space volume seems to have been something like 171,000 cubic feet. That would mean 3.167 cubic feet per HP. I've tried an example ship based on this type ship. The gun I will use is a 11in/50 gun firing a 718 lbs. shot. The muzzle velocity is 2,764 ft/sec. I'm having some trouble getting the metacentric height low enough. For better or worse, this is a typical problem. The good thing about this design is that the ship with this gun would be much stronger than any conventional cruiser. The standard displacement is 11,460.9 tons. The maximum range is 14n438.1 nm. That is with an armament of 6-11in/50, 8-6in/50, and 6-4in/50 guns. The belt is 3.3in. That is thicker than a real panzerschiffe, but not by much. The speed is 27.6 knots at normal load and 26.9 knots at deep load.