Dauntless wrote:we've drifted a bit (hardly a surprise) so lets start again.
a world with near SL core world tech and industry has decided it wants its own empire and doesn't care if worlds join willingly or are forced.
they know at some point either rogue SL or new SL or GA will eventually find out and they want a navy that can give a good accounting of itself in the belief that if/when they come to blows if they can make it cost enough, then they will be allowed to keep their empire, though not expand it.
now the important question is, is such a navy likely to settle for ships that can fire only SDMs in its light units units and catahphract like i.e. 2 missile bodies bolted together ...
"a world with near SL core world tech and industry" is going to be capable of just about anything, whether a copy of what the major powers have at the end of UH, or something totally out of left field.
Forex:
A primary benefit of the Apollo system is the multiplication of control channels.
Develop a two-stage missile by bolting together two standard missiles of any class and a contrive a control missile with an AI/fire-control repeater and the same drives. Build a pod-nought to dispense the pods that launch the DDCM and brood (the brood can be any size you're willing to build a pod big enough for) and Bob's Your Uncle. You've got a system that will both out-range and out-gun anything except a SD(P) with KH-II and Apollo pods.
Another factor in RMN/GA superiority is the destructiveness of missile warheads on a class-for-class basis. Where the Cataphract design (with a CM based second stage) had to downsize warheads to make the missiles tube-launchable, the RMN found ways to improve grav-pinching warheads and squeeze bigger lasing rods into smaller missiles.
Any "world with near SL core world tech and industry" should be able to increase the power of their warheads in some way. Put bigger warheads on smaller missiles would let you stack more stages fire-able from tubes. (or stack more DDMs in a DDCM pod's brood.)
Smaller ships, DDs and CLs shouldn't ever really need DDMs, though. They have no business standing up to CLs and bigger and their normal missions aren't worth the cost of shrinking a DDM to fit. Bigger warheads are probably a different story, though.
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Answers! I got lots of answers!
(Now if I could just find the right questions.)