A commemorative Titanic stamp from Guinea, part of a collection of enthusiast Kenneth Mascarenhas, is 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. REUTERS/Chris Helgren (Tags: ANNIVERSARY TRAVEL SOCIETY TRANSPORT)