Funny you should mention that. While on cruise aboard the LPD Coronado, I was going down a ladder when one of my feet slipped out from under me. To keep myself from falling, I reached up above the hatch coaming to catch myself. My ring got caught on the coaming edge and, just for a second, I dangled there until I could get my feet back under me on the ladder.
It tore my finger up pretty badly, but kept me from probably more serious injury from falling backward onto the ladder and then down eight feet or so to the next deck.
It is called being “degloved.” That is why we are told not to wear jewelry aboard ship.