Just for fun , I switched to Shivan super lasers and obiliterated the Iceni from five kilometers out . I was still informed that the Icenie had jumped though
Also , I blew up the SD Ravanna twice in a row .
Um, Shivan super lasers aren't really that cool
they just have 30 km range (which is actually the range where some FS2 beams cut out; others extend to infinity, but active targetting for AI purposes is far more limited), but they are slow enough to be dodged by fighters. What you need is the BFRed, that thing hits almost instantly and has true beam graphics (though when fired from a fighter/bomber your screen is totally blinding from the particle glow unless you switch to external view and zoom out a lot).
Oh and, what SD Ravana? The one you encounter during the Lysander's destruction?