This is an example of an above ball attachment that has become tangled and wrapped around the chain below the ball. Floats have been used to try and prevent this from happening but do not.
The problem here lies with where the "waist" or "equator" of the mooring ball sits or floats in the water. If the waist/equator is ABOVE the water, as this one is, the pendants can very often wrap the ball in calm weather, then as the wind picks up they will be sucked down the round curvature of the ball and into the chain, floats or not. If you have a top ball connection the ball should ideally be sized to float just BELOW the equator or waist of it at low tide. With the equator of the ball below water the floats on the pendants have a much better chance of riding up and over the ball as opposed to under it and into the chain.
If a storm were to come up and this pendant was wrapped in this manner there is a very high likelihood this boat would break free.