I'm not too familiar with Armoured Assault, as I've not had to use it in play. But Star Strike offers quite a lot, if you have the kind of game that isn't planet-bound. You will find in it different rules systems from a very basic game that doesn't need anything else, through to a hybrid of that basic game and some element of skills, through to the version that is fully compatible with the SM2 rules. It provides rules for ship to ship attacks (including critical tables), guidelines on how to build your own ships, as well as some stock vessels (note there are also three separate ship books as well - I forget what they are and I'm 4500 miles away from my books at the moment so I can't check
but I think they are Imperial vessels, military vessels and adventurer class vessels).
I personally have modified some of the formulas for ship building though so as to provide a more cinematic experience for the players - some of the things that the ship must have are so large that it's very difficult to build a ship at the kinds of tonnage a group is going to need. I also have different races in my gaming universe have a limited ability to create superior versions of some basic systems, allowing for volume and mass to be traded against cost (e.g. a system comprising several asteroid belts populated by a people who make their living mining, would require the development of sophisticated sensory capability; a warlike people might have perfected the design of defensive shields or laser cannon, and so on - effectively doing something similar to the tech levels in SM:P).