Looking at the fleet from a medbay bed. (The Corvette is available on another thread. it's a CR-90 I believe)
This is the emergency OR. the walls are reinforced, the bed is over-lit and the bacta tank has an internal power source.
That's one of 3 ovoid fuel cells that feed not only the reactor, but the 7 engines directly as well.
Here is the ship's Computer Archive. It's the droid brain that drives the ship's internal functions, and the main memory storage for the ships' databanks.
And finally, these are two of the 7 engines that drive the frigate. I like the see-through frames that allow me to keep the conical look and also make it seem to be held in place. A lot of cosmetic work is about to happen here with the next release