Iranian frigate Alborz (in Persian البرز), a British-made Vosper Mark V class frigate (also known as Alvand class frigate), was commissioned in 1971 as part of a four-ship order. The ship was originally called Zaal, named after Zaal, a mythical warrior of ancient Iran (son of Sām and father of Rostam) and an important character in the Shahnameh. But after the Islamic Revolution it was renamed Alborz, after the Alborz mountain range. In January 2010 the ship was commissioned to the Gulf of Aden, to help protect ships from Somali Piracy.