rsiskar wrote:As the stern was up in the air, and the ship was about to split, wouldnt the expansion joint have opened?
Of course, Rsiskar. And an opening expansion joint indicates it was doing its job. The structural hull itself was designed to take enormous stresses as the ship moved through a seaway. The superstructure (essentially the deckhouses atop B, A and the boat decks) sat on top of the structural hull and was not designed to take those stresses. As the hull flexed beneath it, the superstructure inevitably 'worked' and the expansion joints gave it that flexibility: without the expansion joints, the superstructure would have ripped apart.