:How to tell your carrier is turning, or dead.:
If horizon is passing by, the ship is turning.
If you look BEHIND YOU, you can see the ships tail wagging, look up for bombs.
If planes taking off ahead of you, hit the tower, or fall off, it is turning.
If you're feet become instantly wet, the cv just blew up under you, enjoy your swim.
All of the above can be used to aid your situation.