Team Logo. The Nashua Pirates were a team in the Eastern League. They were the AA affiliate of the Pittsburgh Pirates. In 1987 they moved to Pennsylvania and became the Harrisburg Senators. Retrieved from "https://prosportsteams.fandom.com/wiki/Nashua_Pirates?oldid=17473" Categories: Former EL Teams Teams in New Hampshire Teams in Nashua Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.