The Herndon Monument on the grounds of the U.S. Naval Academy is a 21-foot-tall (6.4 m) grey granite obelisk. It was erected in memory of Captain William Lewis Herndon, who died during the sinking of his ship, SS Central America, on September 12, 1857 while helping to evacuate passengers and crew. All women and children and many of the men aboard were saved by a nearby ship during the storm.