Now they have found that both engines are missing. So, not exactly a perfecty executed ditch, but better than a cartwheel effect.
8-)
According to expat that's intentional. Probably the reason it was successful.
It would also be interesting to see if the engines are still on the wings or not. This would indicate what sort of landing it made. If it "landed" on the water they would normally be ripped off, as they are designed too or if they are still on, possibly indicating that the pilot stalled her onto the water tail first.