I have an 18in gunned battleship design, similar to the battlecruiser

I have a pencil drawing and specifications for a British battleship, circa 1941, that has 9-18in guns. I will do a Springsharp design and post the photo, as well. This series all are equipped with a hanger and cross-deck catapult for aircraft. I must admit that I did not allow for that in the battlecruiser Springsharp design. I probably need to see what sort of weights are involved, if I can find them.