Great work, Lazer. I have the two as models, and by cross referencing these with plans (yes, I did, myself, entertain drawing them! I guess I'll have to be satisfied with drawing the SS Oriana...) there are, besides the length issue certain deck layout differences and slightly different pool arrangements etc, things that are mostly very hard to actually represent correctly on a drawing like this.
But, looking closer at both drawings, I have a few issues with them:
They look far too 'boxy' to really match the sleek, elegant lines of the real ships. The forward superstructure is wholly wrong and doesn't agree with either photos or plans. The sponsoned-out superstructure (promenade-deck level) is not correctly featured, as there's no shading beneath, especially the forward section. Also the stabilizers are way, way too big.They did have twin pairs, for sure, but they were considerably smaller in size and set closer together; and, as far as I can tell from all my evidence, there were'nt any bilge keel fitted either.
I know all this sounds like a terrible denounciation of your work, but it isn't. I really love these two, maybe the smartest, most elegant-looking of all the trans-Atlantic liners, so I'm only trying to make good be perfect!