I would guess that scuttling a ship so that it descends into a deep sea trench would have minimal environmental impact. Any toxins would be contained by the immense pressure.
No, that's not how it works.
Any vessel unable to withstand the extreme pressure will rupture, and then anything contained within it will move to the point dictated by its density.
No, that's not how it works.
Any vessel unable to withstand the extreme pressure will rupture, and then anything contained within it will move to the point dictated by its density.