A couple of days ago I surfaced in a huge storm. I look at the Nav map and see a ship marker right on top of my sub marker. The deck watch gave no warning that a ship was near by. Next the guy that yells "yea" at the time of sinking a ship sounds off. WTH?

I look again at the nav map and the red sunk ship marker is there.
I never heard grinding of metal or anything to indicate a collision.
I have no idea what kind of ship I struck.
Also nothing was logged into the Capitan's log.
I didn't know you could sink ship or boat by collision.:hmm:
Has anyone else ever sunk a ship or boat by collision?