Friends and family of some of the descendants of those who died when RMS Titanic sank, throw flowers into the sea at Southampton Dock during a Centenary Memorial on April 10, 2012 in Southampton, England. The Titanic sank on April 15, 1912 after hitting an iceberg during its maiden voyage to New York from Southampton, England. [Photo/CFP]

Chinese sky lanterns decorate the area around the ArtScience Museum at Marina Bay Sands in Singapore April 10, 2012. Some 2,228 lanterns are hung around the museum to commemorate the maiden voyage of RMS Titanic 100 years ago on April 10, 1912, signifying the numbers of passengers onboard, according to the museum's press release. [Photo/Agencies]

Passenger Brian Alm adjusts his jacket as he walks the deck of the Azamara Journey cruise ship dressed in early 20th century period clothing, in New York April 10, 2012. The Azamara Journey will sail for Halifax, Nova Scotia, for a Titanic Memorial Cruise where passengers will visit a cemetery where victims of the sunken cruise liner are buried. [Photo/Agencies]

A passenger looks out over the deck of the Azamara Journey cruise ship in New York April 10, 2012. [Photo/Agencies]