I don't think they'd replicate shivan beams, i think they'd probably study them (given the chance, you'd probably need a score of argos to capture a destroyer or juggernaut. They's probably stay outside the vessel and just scan it from the safety of a faustus or something) and make similar beams, like a BFRed, BFGreen.
You know, add a couple of hitpoints and a BFGreen or LRBGreen (instead of a Bgreen), a hecate is really powerfull (funnily enough, that works for all ships!!). one shot from an LRBGreen can knock out a ravana can you believe?
The hecate is more of a carrier than a warship, the hatsesput is an anti-warship destroyer, the hecate is the fighter carrier. The collosus is both, and does so well.