Honestly pretty crazy, although that must be the max speed. The carrier was going about 10 mph in this case (per Strava).
They don't normally go that fast from what I understand. That is their top speed in reserve they can use for evasive maneuvers, they don't want to go faster than their support fleet or deal with the high maintenance running at threshold will cause.
It's like when you drive your car you're not normally redlining it since that will kill the engine if you do it all the time.