Well, the first ship that was hit by a container ship had a good portion of its senior crew relieved of duty, but this one might be a different story.
The maritime rule of navigation is that you give way to vessels on your starboard, and the first ship was hit on her starboard side, and so was clearly at fault.
The latest one was hit on her port side, so cannot be 100% at fault. I suspect it will be a combination of inattention on the tanker's bridge, both visual observation and radar monitoring, and not listening to the radio traffic and any warnings the US Navy ship broadcast. But we shall see.
Remember as well that tankers and container ships have lousy braking and steering systems. Emergency braking usually takes 2-3 miles.