Manufacturer catalog
NII-400 (Gidropribor) is the Soviet and Russian naval-underwater-weapons research and production organization behind a long line of torpedoes, mines, anti-mine systems, hydroacoustic countermeasures, and underwater vehicles. Established in wartime Leningrad as NII-400 for mine, torpedo, and sweeping research, it was renamed Gidropribor in 1966, later became the Gidropribor central research institute and NPO Uran lead organization, and now operates as JSC Concern Sea Underwater Weapon - Gidropribor in Saint Petersburg.
2 weaponsThe organization traces its direct wartime form to February 1944, when Soviet shipbuilding authorities organized the Scientific Research Mine-Torpedo-Sweeping Institute No. 400 in Leningrad on former Plant No. 231 and TsKB-36 boat-base infrastructure. Its early tasking centered on new and modernized torpedoes, naval mines, and minesweeping weapons, while a 1948 Lomonosov branch specialized in thermal-engine torpedoes.
Gidropribor became a broader naval-underwater-weapons center during the Cold War, with test facilities, experimental production, and branches tied to Soviet torpedo and mine development. Public company histories credit NII-400/Gidropribor and its successor structure with about 180 underwater-weapon and special-equipment patterns delivered to fleet service, including torpedo and mine families, anti-mine equipment, hydroacoustic countermeasures, and autonomous underwater systems.
The modern concern remains a Russian state scientific center and part of the Tactical Missiles Corporation structure. Its own public material describes a full cycle from research and applied development through prototypes, tests, serial-production support, and production of naval underwater weapons for Russian and foreign naval customers.
A Soviet 533 mm wake-homing heavyweight torpedo from the Type 53-65 family; the catalog record identifies NII-400 Morteplotekhnika as the developer for the M variant.
Sources: Type 53-65 - Weaponsystems.net, Russian Torpedoes after World War II - NavWeaps
A modern Gidropribor universal electric remote-control homing torpedo offered for submarines and surface ships, with public descriptions covering anti-submarine, anti-surface, and fixed-target roles.
Sources: Army-2024 Gidropribor Developments, Rosoboronexport Naval Underwater WeaponsSoviet authorities organized the Scientific Research Mine-Torpedo-Sweeping Institute No. 400 to develop and modernize mine, torpedo, and sweeping weapons.
Sources: Gidropribor Official History, Gidropribor 80 Years
A specialized NII-400 branch was created at Lomonosov for thermal-engine torpedo research, later becoming the Morteplotekhnika research and design institute.
Sources: Gidropribor Official History, Gidropribor 80 Years
After receiving the Order of the Red Banner of Labour for naval-weapon work, the institute took the Gidropribor name.
Sources: Gidropribor Official History, Gidropribor 80 Years
The modern concern structure brought Gidropribor, Morteplotekhnika, Dagdizel, Electrotyaga, and Uralelement into an integrated naval-underwater-weapons organization.
Sources: Gidropribor Official History, Gidropribor 80 Years, U.S. Treasury KTRV Designations
Russian defense-industry reporting and later sanctions documentation place Gidropribor within the Tactical Missiles Corporation defense holding structure.
Sources: New Defence Order Gidropribor, U.S. Treasury KTRV Designations
Open sources use several historical and translated names for the same institutional line, including NII-400, Gidropribor, TsNII Gidropribor, NPO Uran, and JSC Concern Sea Underwater Weapon - Gidropribor. Current Russian official and sanctions sources describe the modern entity; older Soviet design attributions may refer to predecessor institutes or branches rather than the current joint-stock company.
Category
Standalone missiles, bombs, rockets, torpedoes, and guided or unguided explosive payloads.