Collisions are usually the fault of both ships underway, usually one more than the other. COLREGS require you to take early and effective action to avoid a. Illusion regardless of who is the “burdened vessel” (required to give way). The only exception is if one is broken down (not under command) and unable to maneuver, but even then she responsibilities to communicate her status to other vessels (Red over Red, the Captain is Dead).
However, this collision was on the starboard side of the DDG, making the DDG the give way vessel.
Given the DDG’s manueverability, this should not have happened, and it is almost certainly the DDG’s fault.
Also clear the containership had reversed her engines somewhat, given the DDG wasn’t sliced in two pieces.
Someone decided not to wake the CO.