"Titanic" was subjected to extreme opposing forces – the flooded bow pulling her down while the air in the stern kept her to the surface – which were concentrated at one of the weakest points in the structure, the area of the engine room hatch. Shortly after the lights went out, the ship split apart. The submerged bow may have remained attached to the stern by the keel for a short time, pulling the stern to a high angle before separating and leaving the stern to float for a few moments longer. The forward part of the stern would have flooded very rapidly, causing it to tilt and then settle briefly until sinking. The ship disappeared from view at 02:20, 2 hours and 40 minutes after striking the iceberg. Thayer reported that it rotated on the surface, "gradually her deck away from us, as though to hide from our sight the awful spectacle ... Then, with the deadened noise of the bursting of her last few gallant bulkheads, she slid quietly away from us into the sea."