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
1980s in Japan thought to be inactive, had a series of eruptions in 1980. In 1981, the caldera lake volcano Lake Shikotsu erupted in Hokkaidō, followed in 1982 by Mount Tarumae, which is located on its shores. Mount Kusatsu-Shirane in Kusatsu, Gunma Prefecture, erupted in 1983. The Kaitoku Seamount erupted in 1984, Mount Tokachi—located in Hokkaidō—and Izu-Tobu—located on the Izu Peninsula—erupted in 1989. Emperor Showa died in the year 1989 after serving his people for more than 60 years. Akihito acceded to the throne in 1989, and is the 20th most senior monarch or lifelong leader. He is the world's only reigning monarch