Jonathan_S wrote:(I say 'true' DDM or MDM because the MAlign at least didn't have baffles when they designed the Cataphracts. Those appears to be true staged missiles and much longer (and with smaller warhead) than an DDM of equivalent performance would be. I think the distance between the 1st stage's normal drive impellers and the 2nd stage's CM drive impellers helps prevent the CM impellers from getting wrecked -- but that means a 3 stage version would be very long to maintain that same separation between the 2nd and 3rd stage drives)
When designing system defense missiles, size is no problem. A three or four stage Cataphract could be built just as easily as a two stage, ship launched missile. There would be no particular reason to down-size any stage to a CM drive so no particular reason for a down-sized warhead. it should be possible to even match the output of the MK-16G and the corresponding upgrade to MK-23s and Apollo (and Apollo-SD.)
The pods for such missiles (if they are even put in pods) would be bigger than a LAC or DD, but it would be easier and cheaper than building a ship of equal size.
Technodyne would be happy to sell as many missiles based on up-scaled Cataphract designs as they can build. "Genuine" MDSDMs with either Havenite capacitor tech or Manticoran/Grayson fusion tech would be cheaper and more effective, but if they are willing to lose market shares to Technodyne and Erewhon and Maya, and the Andermani in a fruitless attempt to protect a "secret" only their bank balances will suffer -- probably.