Nice, really nice. You've really put it together.
One question (I haven't read all of the posts thoroughly) -- does the middle section only have room for those specialized pinnaces, or does it seem like there are grapples there for some add-on payload pods?
It is lovely, though the only area I have reservations about is the bridge. I recall the Bill Keith making some designs with what looked like 'wrap-around' bulging windows for the bridge (perhaps the Type-Y Yacht?). I think that would suit the design well.
Does any other version of Trav mention liquid crystal skins, or is that just a GURPS abberation?