A bollard is illuminated by Alvin on the submerged hull of the sunken Titanic in 1986. Alvin is a manned submersible vehicle used during the exploration of the wreckage.
Gallery: Titanic 100 year anniversary
Apr. 13, 2012 @ 06:23 PM
The Titanic sunk on April 15, 1912, and has remained a famous incident in world history ever since.