This is the result of the shield not having undergone special synthesis, along with the jump engine, and some defensive measures against its properties. The technology in the opponent's hands is undoubtedly from the star systems they have occupied, and on top of that, they definitely have obtained manufacturing technology from the Galactic Federation. So now, all of the Federation's warships need to be improved, including their communication methods and engines, etc.
For instance, the last time the enemy came up with a measure that could disable both the flight engine and the jump engine, we need to implement targeted countermeasures. However, Finn Lewis doesn't have to worry about the warships; the new warship designs are even more compact and the structure more logical. They aren't larger in size than the current Fire Crow class warships—in fact, they're slightly smaller—but overall performance has increased by at least fifty percent, if not more.
