More on Shipwrecks from Infoplease:

• shipwreck - shipwreck shipwreck, complete or partial destruction of a vessel as a result of collision, fire, ...
• Lusitania - Sunk by German forces, the fated Cunard Liner contributed to anti-German sentiment before WWI
• Marine - Marine 1865 April 27, Mississippi River, nr. Memphis, Tenn.: explosion on steamboat Sultana killed ...
• Submarine - Submarine 1963 April 10, North Atlantic: atomic-powered submarine Thresher sank; 129 dead. See also ...
• Titanic: 100th Anniversary of the Sinking of the World's Most Famous Ship - April 15, 2012, marks the 100th anniversary of the sinking of the world's most famous ship