Commemorative Titanic stamps from St. Vincent and the Grenadines, signed by the last Titanic survivor Millvina Dean before her death in 2009, are seen on board the Titanic Memorial Cruise in the mid-Atlantic Ocean April 12, 2012. The cruise is retracing the voyage from Southampton of the ill-fated Titanic liner, which hit an iceberg and sank 100 years ago on April 15, 1912. [Photo/Agencies]