No need to get snarky about it. momo.  Here's the relevant passage:

The point is that many modelers today look at a kit that is nearly 70 years old and wonder why it has the simple, flat bottom below the waterline.  And there is a legend that it was designed that way specifically because it was intended as a toy and that kids would push and pull it across the living room floor.  The truth is more prosaic; the engineers couldn't get more details, so they kept it simple.

As to Revell's waterline models, they were first issued nearly 20 years later, when Revell brought out its "International Scale" series in the early 70s.  Those kits offered the option to finish the model as a waterline model or a full-hull model with a display stand.  The series includes a scaled down version of Revell's Pennsylvania/Arizona kit, the Intrepid/Franklin, as well as the Prinz Eugen, Blucher, Ark Royal and Ashanti, Massachusetts, and Graf Zeppelin, and maybe some others I'm forgetting.