...
On the face of it, a sharp stbd turn (perhaps when the warship's collision course was first realised), followed by a return to the scene for S&R until released after Japanese assistance arrived.
That was what I thought, too, until I was told to check the actual time.
Then it became weird.
Note that the first dash to the right was about 1 hour BEFORE the collision, followed by the full 180 degree turn, and returning to the position where the actual collision happened later, around 1730 UTC.
Edit: now I see that it's possible that times are not correct - but first, both sides need to get their story straight. Container vessel's company first reported that the collision occurred around 1.30 LT (16.30 UCT), consistent with first sudden change in course; however, USN first reported that the collision was almost an hour later. This will be interesting to follow.