Pedro I was a ship of the line of the Imperial Brazilian Navy. It was a third-rate, three-masted, two-decked 74-gunned sailing ship. The ship was built by builder Antônio da Silva in the Bahia Navy Arsenal in Salvador for the Portuguese navy in Colonial Brazil in 1763. First named Santo António e São José, it took part in several naval actions in the decades after its construction such as the bombardment of Algiers in 1784.