So, I was playing on the danger zone map, near the port, messing around in A submarine. I dove down, and to my surprise, i saw a sunken ship. NOT the sunken aircraft carrier, elsewhere on the map. its the first time I've seen it and I've been playing the game for some while now. So, could somebody please explain to me about the boat, anything about it if you can? it would be greatly appreciated.

thanks, ProNoob456