Under the attack of 240,000 streams of movements, the armor of Stronghold on Sea was completely broken instantly. The multitude of streams collapsed countless structures, burning and evaporating them. After the explosion of a number of aether ponds, the turbulence almost broke up the Stronghold on Sea, creating massive tears such that that sea water could gush in.
The siren sounded and the emergency maintenance system was triggered, but there was nothing much it could do to repair the damage. All it could do was to barely ensure that the structure was still intact. They had to give up on a number of subdivisions and close the gates in order to keep out the seawater.