John,
From what you've described in your latest post, I believe what you are looking for is a VLCC (Very Large Crude Carrier) or it's successor, the ULCC (Ultra Large Crude Carrier). I don't know of any kits on the market, but the type of model you are looking for can been seen at http://www.maritimereplicas.com/tankersAndCarriers.htm.
Because of their size, ULCCs generally have a very high block coefficient, meaning they appear somewhat 'square' and boxy compared to higher speed, smaller ocean carriers, particularly at the bow. This makes their hullform relatively easy to construct plank-on-frame, carved solid wood, or combination.