Havn't specified, but those weapons use very little energy. I would say around 12 AAAf, 20 flak, 10 missile lunchers and 10 terrna turrets off the top of my head.
Absolutely no evidence whatsoever for that energy calculation, moreso bearing in mind that's more anti-fighter turrets than the Colossus had (18 terran turret, 12 flak, 10 missile, 10 AAAf beam), in a ship that's less than half the size. So not only do you have a reactor the size of that of the Colossus, but you have under half the internal volume; you really think that can be made up by just removing the (larger) fighterbays?
And the fighterbay on the Colossus would have had very low power requirements in comparison to weaponry (again, consider what you actually need to power using the main reactor on a fighterbay....it's not going to be exponentially bigger than the 2 fighterbays you want, anyways)
5 engines reduce the disabling weakness... and no, it's not vulnerable from attacks from the top - quite contrary.
2 fighterbayys are a structural weakness (but then again they are alls oby destroyers..even more so since they are bigger), but not a big one, as they are small and relativly unimportant to the ship. Besides, they are on different sides of hte ship so the chances that both get destroyed are slim.
2 fighterbays represent a gap in the armour of the vessel; 2 gaps (compared to a single bay on a destroyer) to be precise, where there are structural joins, pressure seals, etc. For a destroyer, that's not a major issue as it is designed for hands-off attacks, focusing on using fighters to keep threats at bay. For a battleship...well, it's been described by you as being a close-in fighter against large ships, so that's lost. You only need to lose one, anyways; the whole issue of a structural weak point is that it can be destroyed and thus compromise the entire vessel hull.
5 engines; again imposes issues of size, how you engineer that redundancy, and the number of crew required for each engine. More engines; increases the chance of a single fault (increasing complexity), also structural issues of bracing and shielding (because you need to move these to be physically apart or they're just as vulnerable to explosion damage as one big engine).
Orion has 7.... and I havn't even stated the beam type..and like I said - think outside the box for a seconds, who said beam cannosn are it's main weapons?
So you've not stated the main weapons? Given that beams are the most effective form of energy weapons in Freespace, you could only have missiles/projectiles as a main anti-cap weapon then.... and, guess what - ammo! Which needs space, no?
And it has less beams than an Orion.......
In other words an asumption. the Sobek probably carried a lot of scientists and last-minute persoonel lthat had to evac the area. And even if 6000 is totaly accurate for the Sobek, it can be way off for hte Deimos.
NB: typo, mission was A Lion At the
Door, not Gate. Apologies; although maybe you should have actually checked the text yourself.....
Anways..... a corvette is sent in order to attack and blockade a node from Shivan space to GTVA, and they
add personnel?! Moreso, the debrief explicitly says "6,000 Vasudan officers and crew". And these ships were combat-deployments to intercept & destroying deploying Shivan forces following the destruction of the Vigilant & discovery of the knossos, not perform and scientific or evacuation task.
Of course, the Deimos could quite conceivably carry over 6,000 crew; it does have more turrets (26 vs 22) and is over 100m long (obviously not done a volume comparison, though). It's more likely than less; especially as Vasudans appear to be physically larger (Thus probably requiring more living space, slightly taller ceilings, etc)
I'd note your battleship also has a pifflingly small amount of defense fighters, which means that it is still useless operating at a system-wide level (it can't provide escort or cover for anything beyond itself). Plus the battleship doesn't have bombers, which means it surrenders any control of how far ranged the battlefield is; any fighter carrying capship can sit at beyond the battleships gun range and wear it down with bomber attacks until it (the attacker) has a tactical edge. Unless, I suppose, you equip your magic-o-ship with a vast amount of long range torpedos (as they're the only FS2 weaponry with the type of range to even come close to matching the range of a bomber force), in which case you have, again, issues of storage for those munitions.
(A destroyer based force can pretty easily strip away a 20-fighter defense; namely it sends bomber wings to use Trebuchets to disarm/disable the battleship, with the intent of either wearing it down or drawing out the fighters to beyond AAAf range - at which point the space superiority wings from the attacking destroyer can engage and destroy those interceptors.)