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
Volcano surfing filmed his adventure, and it later aired on the National Geographic Channel in a 5-minute news segment. Istvan differentiates volcano boarding into two forms: 1) Boarding down an active volcano where immediate dangers come from flying molten lava and lethal volcano gases, and 2) boarding down an inactive volcano where no immediate danger is present (similar to sand boarding). Volcano surfing Volcanog or volcano boarding, is a sport performed on volcano slopes. The most popular slope is the Cerro Negro near Leon in western Nicaragua. Riders hike up the volcano and slide down, sitting or standing, on a thin plywood