Late hit on this one, just found out about it. The Wilmington Pirate Festival is Saturday July 7th, tomorrow! This is held at the Kalmar Nyckel shipyard. You can board the Kalmar Nyckel, Delaware's Tall Ship. Many other activities are planned. See below for web link.......
http://kalmarnyckel.org/dy.asp?p=200 (http://kalmarnyckel.org/dy.asp?p=200)