Soviet Border Troops
After World War II the island came under the control of the Soviet Union, and Soviet Border Troops manned the former Japanese military facilities. Its most important role was radar surveillance of the Kuril Islands. A VHF P-14 radar, "Tall King", was put into service during the 1950s or 1960s, and a P-35 radar and possibly a PRV-10 “Rock Cake” radar were also in service at some point.