Different from the previous vibration pulse cannons fired before, there was a vibranium warhead in the core of each pulse cannon this time.
The four vibration pulse cannon blasts, which contained solid warheads, pierced the donut battleships' protective shields and hit the power cores of the four battleships.
There was the sound of minor explosions, and most of the systems on the four battleships suddenly shut down.
Apart from emergency generators which allowed some basic functions to retain power, the donut battleships could no longer open fire or move at high speeds, and were practically iron coffins.
The Ursa Minor battleships immediately turned around and attacked the other donut battleships, ignoring the four battleships that could become their most intact spoils of war.
However, several battleships in Thanos's fleet fired at the four vibration pulse cannons.
There was a rumbling sound, and sparks erupted in the air.