I concur that my hull had a straight keel and outstanding deck fit: In fact the center bottom of the keel is a bit higher than the bow and stern. Not a big deal...
The curvature of the bow's sides did warp slightly the porthole openings, but getting these bow concave curves accurate outweight this problem imho...
Here are a few other observations I posted elsewhere on this site:
"I also think the rear hull of the Trumpeteer kit has a much more prominent error (but simpler to fix) than those shown fixed in the thread: Notably that the rear area of the hull, which is sloping upward above the propellers, is actually a flatter surface than it seems towards the edges, and as a result has sharper "corners" where the sides of this area transition to the vertical, including to some extent all around the stern's bottom. This is actually away from the complicated propeller stems and rudder bases, and so is somewhat easier to "improve" than what is shown in the thread, if not quite a path to a "full" fix...:"

"I did find out something real interesting about the 1/200 Trumpeteer deck plan shape, after much effort: The final rounded end curve (in plan) at the tip of the stern is too narrow in radius: In effect, the deck plan view is slightly too "pointy" at the stern end...
Although this might bring the overall length a bit under scale length, I found it is quite easy to remove/carve out about 4 mm of the stern's deck radius extremity, and change the radius to a significantly broader-looking "rear end" (I did go through the plastic, but not so large a hole resulted when I felt it had gone far enough): This will require cutting a wood deck's extremity to match, and rebuilding in my case the hull's "lip" edge (I scrapped the entire plastic deck sitting surface, so that the deck is slightly "countersunk" by 0.7 mm all around, allowing, in theory, a flush wood deck without too much trouble: It was a major ordeal, but fairly easy to do)
I did not need to remove/alter the nearby deck detail while carving out the rear end's radiused tip, and I don't care if this deck detail now sits too close to the stern extremity. The only other issue I saw with doing this is that the left rear anchor hole is affected, and the sit of the rear anchor will have to be modified to look "untampered with"
To determine this stern radius (or at least its relationship proportional to the whole ship), I used aerial photos of the Tirpiz, seriously enlarged to overlay this enormous kit to it... (Other photos caused problems when repeatedly enlarged):

In profile, correcting this "pointy" stern "squares up" the stern when viewed from the side, and I think that is a good thing as well. The stern profile's lower radius will need squaring up anyways, as I outlined here below (I hope the builder of this particular model will not mind my use of his photo, with my added lines, to make the point):

I have started on the building up the hull's rear lower side edges "squarer", and though easy to do, it requires truly vast amounts of putty... Info on the actual appearance of the docking keels (not drawings) would be greatly appreciated...
Gaston