When they get it so you can have ships sink when severe damage occurs below the water line, choose the Titanic as your ship, find an iceburg that's rises to the prominades (about 65 feet high) (with 6/7 of its mass below the water), head straght for it at full speed ahead, then, when it is less than twice the ship's length away, turn the engines to full speed astern, then turn the wheel hard a starboard, so the ship will turn port. the ice burg should grind along the fore of the starboard side. turn the engines back to full speed ahead, but then stop the engines and see if it sinks like the Titanic did April 14-15, 1912.
that would be coll if it sank the same way.