After being in use for 20 to 30 years , the ship is believed to have sailed to lower Manhattan , where it was eventually sunk , either deliberately or by accident , and ultimately buried by trash and other fill materials purposely used to extend Manhattan 's shoreline . Scientists say hull found at the WTC site likely originated from a forest in the Philadelphia area . Vessel likely built around 1773 and believed to have been a `` Hudson River Sloop '' ship . Score: 7 Ship 's hull was found by archeologists at ground zero site in July 2010 .
Scientists say hull found at the WTC site likely originated from a forest in the Philadelphia area . Vessel likely built around 1773 and believed to have been a `` Hudson River Sloop '' ship . Score: 7 Ship 's hull was found by archeologists at ground zero site in July 2010 .