This picture of the Crystal track brings up a point I made in another thread. How often are data points taken??
1)Using WAG, I think the data points of the Crystal track at the time of impact, are about 7-10 minutes apart.
2)Using WAG, If you look at the distanced covered between the data points. The closer the marks the slower the ship, and the further apart the faster the ship. That would mean that some data points are up to 1 miles apart.
If the collision happened at point X, it appears the Crystal had speed up, possibly to avoid collision?? and the right angle is only because of the time elapse between data points.
Just found this Burke class destroyer rudder stress test..
https://www.youtube.com/watch?v=mzveUz-WRGQ
REF: The small island Toshima is aprox 1.6 miles in diameter.