15 years ago on January 12, 2004, the RMS Queen Mary 2 (QM2) set sail on her maiden voyage from Southampton, England. She is the largest transatlantic ocean liner in the world at 148,528 gross tonnage. The mammoth passenger ship boasts of casinos, pubs, shopping arcades, gourmet restaurants and much more. QM2 has a capacity to host up to 2,000 passengers at a time. 1,253 officers and crew are needed to operate the QM2 during a voyage.