My advice would be to present primary source evidence here (or at least reputable secondary sources) that back up your conclusion about the propeller arrangement...
Regarding the "rework" of this drawing, it's not obvious to me what you've changed aside from some recoloring. Based on your post, are you asking if the community can help you update this drawing by doing the hard stuff like plotting out the seachests and intakes on the hull and updating all the shading? If this is really what you're asking my advice would be to attempt this yourself first before asking others to do it for you.
I have tried doing them myself, but gave up when i didn't get the outcome i expected and i've been too afraid of doing the rest of the listed things by meyself ever since. I remembered that i once drew a propeller before and it looked hideous. And no I'm not making an excuse. i've already tried and failed. i'm scared of failure.
A lot has been changed. you have to see it more carefully in paint. I had to use the Encyclopedia Titanic starboard profile as a guide. There are differences, It's not just the recoloring, Had to correct windows and other features and were in the wrong position or shape. Had to create new elements as they were missing in the original two. Putting additional detail on the superstructure. etc.
one of the inaccuracies the originals had were the skylight windows from the olympic and wooden ramparts for the collapsibles.
There's only so much i can do. That's as far as i'll get. I also want it to stay in the style of the previous artist, which is why I didn't touch the riggin and why I removed the central propeller rather than drawing it myself.