22° curve for arc length of about 1.4 km gives turning diameter of about 7 km.. Is that an emergency turn?
Nope....very normal looking higher speed, about 20 knots, turn to me.
High speed turn last year by USS Abraham Lincoln . Check the wake and of course the arc of the turn. The speed , I guess, is well over 30 knots. I can tell by the wake & rooster tail...water churned up on the stern while moving at high speed.