Hercules and the Pirates (1964)

"The Unrelenting Fury of a Titan's Strength Against the Armed Might of the Scourge of the Seas!"

aka Hercules and the Black Pirates. Brave and noble Samson fights pirates as a soldier in the royal army. He wants to marry lovely fair maiden Rosita, but her haughty governor father disapproves. Meanwhile, the cunning and duplicitous Rodrigo Sanchez joins forces with the wicked Black Pirate to thwart Samson.