Armor:
Durasteel: The only thing keeping ships together during combat, because we lack any sort of force field or shielding system. Good, cheap stuff. Too heavy for ground troops. Fine on ships.
---This makes sense. I like it. I did clean up a bit of that first sentence.. None of the rest of my comments are meant to sound angry or be really aggressive, they just turned out that way. I mean them well even if they don't sound like it
Powerplant:
D Engine Mk. 2: Scored 6 out of 6 in portable power. These babies draw from a dimension callled the Blank. As a result, your not running out of power anytime soon. Sadly gotta guard it or damage to it is explosion or implosion.
---..........Really? We're already pulling energy out of another dimension? Where are we going to go with our Arms Race? Why is anybody fighting anyway, if we're such an obviously post-scarcity society? This should be nuclear fission or nuclear fusion, with perhaps, MAYBE, a smattering of antimatter for lighter vessels to get more powerful for their weight.
Coms: Really fast communication array using EM radiation.
---Particles? Why particles? Radio's faster. Fixed it for you.
Sensors: Generic sci-fi sensors, good range.
---Maybe do Gravitational, Radio/Radar, Thermal, and High-Level EM (Gamma rays + ultraviolet)? Gravity can pick up ships that are running dark, but only at close range, Radio catches only ships that are actively transmitting, Thermal catches anybody running an engine or using radar, HLEM catches anybody emitting gamma rays or UV light (Some propulsion systems, most weapon systems). Radar isn't as good as gravity but operates over longer ranges. It just takes a dangerously long amount of time to get a signal back from radar, and it's not always obvious what you're looking at...
ECM
/Chaff: Deflect/confuse enemy missiles. It's not perfectly reliable but works if the missile isn't self-guiding.
----Chaff is a bad idea in space, it scatters too fast and too easily. Might work if you're willing to carry a LOT, probably should just stick with ECM and possibly decoy drones (Think 'space flares')
Targeting computer: Run by low-level AI, gives pretty good accuracy for being in space. Humans identify friends and foes, machines do the rest (Until something breaks).
---Editted to be 'low-level' AI, with some inaccuracy. Gotta have somewhere to go, after all.
(Nuclear?) Pulsed Drive: Use nuclear bombs to allow for extreme acceleration in combat, as well as high max speeds.
---But why on EARTH? This is an insane and bad idea in general, even rewritten based on the Orion nuclear-pulsed-drive proposals. Carrying regular rocket fuel would be a much better idea. Still requires regular refueling and can't really be used by larger ships (Would need FAR too much rocket fuel to be useful for what it does), but has higher delta-V (e.g., gives more *push* than standard engines)
---INSTEAD, try
Heavy-Ion Plasma Drive: Using the immense amounts of power generated by our reactors, accelerate plasmas of heavy atoms (Think 'gold' or 'lead' or 'uranium') to near the speed of light, before throwing them out of the back of the spacecraft, providing thrust. Thrust can be redirected to the front or sides for maneuvering, but it's faster to go forwards.
Subspace Teleporter: Then again this is only for ships big enough to equip. This puppy allows a once a battle teleport based on sensor range.---I'd recommend 'no teleportation', otherwise I'm spending five turns developing personal teleportation and never losing any battles, ever.
Weapons:
Smart Bombs, nuclear missiles, anti-missile missiles, bays for fighters/bombers. The basics. Also generic missiles of exploding chemicals mirv style.
---No smart bombs in space, missiles and dumb bombs 'fired' from racks only. As in, a bomber flies over, the rack pushes the bombs downwards (pretty fast), and they hit the ship the bomber is flying over. Even then, probably better to use missiles (Which are much more accurate and don't require you to get as close as a bomb does)
Projectile:
Auto Cannons: Think 'bigger machineguns'.
that these are fired like regular guns but bigger)Macro Cannon: Huge spinal mount guns, utilizing rail-gun technology
Harpoons: The low-tech tractor beam. Harpoons attached to your ship by a chain, hit enemy and reel them in. Not very useful since they're hard to aim and 1000km chains are...impractical.
Dust Casters: Gigantic shotguns which fire clouds of
dust sized particles of reinforced durasteel, as a weapon.
----Bowling-ball sized at minimum, if not bigger. Dust isn't going to do SQUAT to ship armor or shields, regardless of how fast it's going. This is honestly a ridiculous weapon in general, space debris is MUCH faster and more dangerous and yet ships can resist it anyways. A rail-gun based version would be workable. And TERRIFYING.
Molten Cannon: It's a rail gun. That fires slugs of molten metal to slag the enemy. What more could you want?
---Again, short-ranged weapons aren't useful in space. This thing COULD, however, be a rail-gun firing gigantic slugs of molten ferromagnetic metal to ruin your whole day. Dense AND capable of melting through your hull? HORRIFYINGLY AWESOME! Also, very much not a 'beam' weapon.
Beam:
Lasers: Enough said. Come in point defense, lance, big
, and Gatling.---Gatling lasers probably aren't necessary---they'd probably only be powerful enough to be point-defense weapons anyway.
Fleet notes: 14 corvettes, 12 frigates, 10 destroyers, 8 cruiser, 6 battle ships, and two battleships per commander. The bigger stuff is guarding Sol/ Earth system for now.