Thank you for all the great input, it is much appreciated! I didn't think the VS would be very straight forward, so discussing it here to get a reasoned consensus helps a great deal. I've been thinking about this a lot the last few days, with all the various parts spread out on my desk.
That is similar to my current thinking on the VS: Chaos Battleship upper hull extended to four bays long, with an Imperial battleship lower hull and Desolator prow. This will make a very large and imposing (intimidating) ship, but won't be a simple build. See top and side mockups below. After comparing the Desolator and Repulsive prows I prefer the Desolator for this application. Its quite a bit longer than the Repulsive prow and fits the HH novel descriptions (broad spearpoint) better IMHO.
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timdp - I think you post above is very much in line with what I was thinking for the VS. Your thoughts on the prow (Desolater vs Repulsive) in particular are very interesting. As I said before, getting hold of a Repulsive prow (or ship) will likely be very difficult now, so I was coming to the conclusion it would actually be easier to model it in CAD (Rhino or Sketchup) and have it 3D printed. Its depressing when that is the 'easier' option!
However, this does open up the opportunity to alter the Repulsive prow slightly. I can model it as the Repulsive prow, but scale it appropriately to be more along the size/proportions of the Desolator prow. This should then fit more as a model and also refers back to the image in the HH board game.
Given the above, would anyone with a Repulsive prow be so kind to provide some measurements for it? This would probably be easiest and most useful as photos alongside a ruler, if at all possible. I had a quick look on Google Image search, but no joy. The closest was our very own
Armiger84's blog, but that didn't have quite the right dimensions needed. It would be very much appreciated if anyone has such info!