Iranian frigate Sabalan Iranian frigate Sabalan Sabalan (in Persian سبلان) is a British-made Vosper Mark V-class (or ) frigate in the Iranian Navy. Commissioned in June 1972 as part of a four-ship order, the "Sabalan" was originally named IIS "Rostam", after Rostam, a legendary hero in the Shahnameh, but was renamed after the Islamic revolution for Sabalan, the Iranian mountain. During the Iran–Iraq War, the warship became infamous for attacks against the crews of unarmed and often neutral tankers and other merchant ships. Before these attacks, "Sabalan"s captain would often board the ships and pretend to carry out a friendly inspection, sometimes even
Mount Garibaldi which stretches over along the subduction zone. Several volcanoes in the arc are potentially active. Lassen Peak in California, which last erupted in 1921, is the southernmost historically active volcano in the arc, while the Mount Meager massif, just north of Mount Garibaldi, which erupted about 2,350 years ago, is generally considered the northernmost. A few isolated volcanic centres northwest of the Mount Meager massif, such as the Silverthrone Caldera, which is a circular wide, deeply dissected caldera complex, are considered by some geologists to be the northernmost member of the arc. Mount Garibaldi is the largest volcano in southernmost