Answer: Basically it was left there or abandoned at a certain point because the ship couldn't move or it was unable to function because had a hole in the ship and it was abandoned by the crew and basically of cause of that it was left there like that and it probably didn't sink all the way because of the oxygen that there is inside the ship. Which is where the water and the oxygen balanced out to leave the ship standing like that. Afterwards that shows us that the ship is abandoned and that it was like that for a long time with no one coming in contact with it if it was able to survive like that over a specific period of time.
Explanation: Enjoy! :)