Dunno about that Constellation model :/ saucer section is kinda low poly compared to the one i converted from SFC2 few years ago also texturing is plainish...
but when I see Seaquest DSV first thing that come to my mind is : :eek OMFG I WANT :eek tho it could also use few K additional polies, also forward section is too narrow.
other than these, these are great models for let's say Armada I&II but for BC they don't stand a chance against about any model released since 2006