Just happened to me seconds ago. I was on a lone patrol in a Sopwith Camel above the coast of the Atlantic (Channel Map). I spotted a lone Pfalz IIIa below me. And while I was hesitating at first, I decided to give it a try and I dived on it. I clearly saw his wings tearing apart, yet the game, for some reason, did not count it as a kill. All of that happened above the water.
So does it mean that if the wreck hits the specific area - like in this case sea - it won't count as a hit? And unconfirmed kills in this game are actually possible?