This subject is certainly hot right now, at least in the circle of sites I frequent.
Chuck Simmins: Here.
All of these posts are full of good stuff, but I’d like to add my own opinions. Imagine that.
I think that the ideal warship for space combat would be a spaceship built from a convervted World War Two battleship that had been sunk in action. Especially if the main guns were lasers based on 18.1 inch naval rifles, and if a super-monster gun with a barrel in the bow was added.
I realize that some folks subscribe to the aircraft carrier approach rather than the battleship approach, and although I don’t agree with them, I’d suggest fighter craft with laser canons mounted on the wingtips, especially if the wings could be separated in, say, an ‘X’-like fashion.
In any event, angling the deflector shields and cloaking devices will be the primary defensive measures.