The reason for the forest of funnels on the latest model is simply this; that is how they built them "back in the day". Review the funnely glory of these beasts! All pictures are from the delightful Big Bad Battleships website.
count 'em, SIX funnels, Yikes!
This is what I was thinking of, still not sure what I am going to do, just pointing out the source of my ideas.