With a 6-gram warhead and a muzzle velocity of 1 kilometer per second, each projectile possessed a kinetic energy of 3 kilojoules, and they were fired fiercely at one-quarter of the maximum rate of fire, or 500 rounds per minute.
Thus, a single Mercury-class Battleship could fire a thousand rounds per minute.
With 480 battleships currently active, that amounted to 480,000 rounds per minute.
The auto-cannons also roared, their heavy, high-velocity shells targeting the mothership and the combat spacecraft from over a hundred thousand kilometers away, flying towards them one by one.
Over a thousand interstellar missiles, trailing long plumes of exhaust, accelerated to a maximum speed of 20 kilometers per second, hurtling violently towards the enemy's mothership and battleships.
Not only that, but they also flexibly changed their trajectories during flight, always firmly locking onto the enemy's figures.