The 80gt nuke module was about 11k tons. Which means that if it was made of TNT, it'd still be a nuclear-level blast. I cleared out all my mods and started from scratch on the Pirapus II, so I can't give detailed numbers.
Features include a single 8-Gt nuke (160x the tsar bomba blast). It's a lone warhead on a one-second timer, designed to ensure that the ship never falls into enemy hands. A crew of over four hundred operates her.
My next plan is to build the Pirapus II, which will use a "fireship" configuration of the Pirapus I as a missile.
Bit off there, each missile has a 10 Mt warhead. I've been going pretty safe by sticking to stock (except for vitreous carbon I think) and not modifying Limits but I think I will give it a shot so I can make temporary stars on demand.
Will be uploading the Pirapus I shortly, I still need to test it in combat against itself. With twelve ten-gigawatt laser engines (and 60 apertures), six colossal nuclear cannons, and the ability to launch 20 10-Mt nuclear missiles per second, the Pirapus I truly lives up to the slogan "eternally ready."
Basically, a counterflare is a set of very, very small missiles launched alongside a wave of much larger missiles and coorindated to reach the target area ahead of the main wave. The targeting systems for both waves are identical. Thus, any flare that would distract the main wave of missiles is instead struck by the counterflares.
When the main wave arrives, the well-positioned flares are disabled, and insufficient time has yet passed for any new flares to be well-positioned. Even if the second wave is drawn to the flares, they'll still effectively hit the target.