A transatlantic journey on the QM2 isn't a cruise, it's a crossing, and many people use the QM2 as their preferred mode of transport between Europe the United States. The Queen Mary 2 is no mere 'cruise ship', but a real ocean liner built with the extra strength power to withstand the rigours of the North Atlantic in all weathers. The 2003-built QM2 took over the transatlantic service in 2004 from Cunard's 1967-built Queen Elizabeth2.
Relative sizes of Queen Mary 2, RMS Titanic, a human, a car, a bus and an Airbus A380 airliner
On 10 January 2007, Queen Mary 2 started her first world cruise, circumnavigating the globe in 81 days. On 20 February, she met her fleet-mate, Queen Elizabeth 2, also on her 2007 world cruise, inSydney harbour.  This is the first time two Cunard Queens had been together in Sydney since the original Queen Mary and Queen Elizabeth served as troop ships in 1941. Despite the early arrival time of 5:42 am, the Queen Mary 2's presence attracted so many viewers that the Sydney Harbour Bridge and Anzac Bridge were blocked. With 1,600 passengers leaving the ships in Sydney, Cunard estimated the stopovers injected more than $3 million into the local economy.
Inside Queen Mary 2: