S.S. Titanic liftboat #4 is seen at National Geographic's "Titanic: 100 Year Obsession"
S.S. Titanic liftboat #4 is seen at National Geographic’s “Titanic: 100 Year Obsession”, on the first day it is opened to the public March 29, 2012, in Washington, DC. The “unsinkable” Titanic sank 100 years ago in 1912. (Credit: PAUL J. RICHARDS/AFP/Getty Images)