COSMOS 1355, also known as Kosmos-1355, is an ocean surveillance satellite launched on April 29, 1982, from the Tsemel'sk (TYMSC) launch site using a Tsiklon-2 launch vehicle. The spacecraft, manufactured by ARSL/KOMET and owned by VMF, has a cylindrical shape with two panels extending outwards, measuring approximately 10 meters in length and 1.3 meters in diameter. It weighs about 3300 kg at launch and has a dry mass of 3000 kg. Equipped with US-P No. 128 payload for passive ocean surveillance, the satellite uses two deployable fixed solar arrays and batteries for power supply. Its surface area is approximately 37.3148 square meters. The satellite was launched as part of a mission to conduct passive ocean surveillance from space.