In 1984, underwater explorer Barry Clifford and his Project Team discovered the site of the 1717 shipwreck of the Whydah off Cape Cod, the only verified pirate shipwreck ever discovered. For the past two decades, we have recovered and researched treasures from the Whydah, as well as from other sites connected to the history of piracy. Every shipwreck is a time-capsule, and each artifact tells a story. Over twenty years, we've collected a lot of pirate stories. To that end, this site is about pirate treasures lost and found -and about pirate mysteries solved and unsolved...
http://whydah.com/

The Whydah Gally (variously written as Whidah or Whidaw[1] (http://en.wikipedia.org/wiki/Whydah_Gally#cite_note-0)) was the flagship of the pirate "Black Sam" Bellamy. The ship sank in a storm off Cape Cod on April 26, 1717, taking Bellamy and the majority of his crew with it.
Wikipedia (http://en.wikipedia.org/wiki/Whydah_Gally)