except that you can only retrofit a certain % of the cost of the ship. Otherwise you get a message saying "...can't doit, yer tryin' to build a new ship bub..."
__________________
Jimbob
The best way to have a good idea is to have lots of ideas.
-Linus Pauling
Take away paradox from the thinker and you have a professor.
-Søren Kierkegaard