Wohoo, I got it!
After a thousand tries, a have destroyed the Monitor, before its hiperjump. I have transfered all energy into the engines after the jump, and targeted Container Transport, after my laser batteries dried out, I flew towards the Monitor, so the Gunboats didn't targeted me. I have shot its engines out with my lasers, and at a close distance with my rockets. After that, the Monitor was a dead ship.