Job, about the timber cruiser: Are you sure it's not one of the currently existing ships of Viking Lines? A quick google search yielded several similar ships. I would link one of the images but wikipedia seems to be down at the moment.
We had a discussion about the existing Viking Line fleet back when the Timbercruiser appeared in the comic, from placement of the actual logo (midships, rather unusual for the current fleet) to specific ships being proposed (most prominently the
Gabrielle). What killed all those speculations dead in the water was when the Paddlewheeler drew near and got
swallowed whole hauled through a rather small-ish hole in the hull.
Most existing Viking Line ships are ro-ro ferries with a single car deck, and their largest are in the 100-150 meters (length) range IIRC. The Paddlewheeler has a length of 20 m as an
absolute minimum, so there's no way that the Timbercruiser has less than 200 m.
The part about the ship being modified by the Norwegians, is that from Minna herself? It seems kind of strange for them to move it all the way over to the other side of Scandinavia.
Quote Minnas comment on page 92 (sorry, haven't found out how to make a link to a specific Disqus comment yet), re: the Timbercruiser's dragon figurehead: "... the Norwegians are the ones ruling the whole ship building/repairing industry, and they like their little viking ornaments. This particular ship ..."
EDIT: FWIW, this cruiser is flat out
way too large to have been operating solely in the Baltic Sea pre-Rash. I'ld guess that it's a hypothetical Atlantic (passenger) cruise ship of the Viking Line that was near the Norwegian coast in the first place when the apocalypse hit, and got remodeled to carry the most unwieldy goods at hand (timber from Finland and Sweden to the West, and large pieces of scrap metal on the way back to the ironworks in Luleå), simply because that's the only thing that'll ever
fill it in the low-population post-apoc world.