Thanks. It's nice to know what I need to build the survey ship, but my question is a more general one. I want to know how I get this kind of information in the game. When I want to build something the game should tell me what technologies I have to research to be able to build it.
So GalCiv2 does not provide this information?
It's been a while since I played the second game, but doesn't the tech screen show you what each technology unlocks?
And I recall most things being more-or-less obvious. There's a line of techs for developing engines, a line for sensors, a line for each weapon and defense type, a line for economic buildings, etc.
I haven't played the game since the community update, which made significant changes, so I suppose it could be different now... ?