The RMS Queen Mary 2 (QM2) is a Cunard Line ocean liner named after the earlier Cunard liner Queen Mary, which was, in turn, named after Mary of Teck, the Queen Consort of George V. With 15 restaurants and bars, 5 pools, a casino, a ballroom, a theater, and a planetarium, the QM2 was the largest ocean liner in the world at the time of its construction, as well as the longest, widest, and tallest passenger ship. What ship challenged that distinction in 2006? Discuss
Source: The Free Dictionary