Thanks for spreading the word Treebore!  The ship plans would probably be easier in Dungeonographer (which includes some art/icons for futuristic items) but that also has a free version.  Hexographer should be good for sector maps and planetary (icosohedral) maps.
Yeah, I really hope I did make it easier to add all the symbols used in Traveller.  If anyone sees a common symbol or feature it is missing let me know.
I plan to add a random generator to it... based on the original rules for that sort of thing.  Have there been updates/options added to those rules?
Thanks!
(The Hexographer creator, in case that isn't obvious.)