AK-230 gun

About 1450 guns were produced in the USSR, and about 300 were produced in China as the Type 69. It was succeeded by the more powerful AK-630 from the mid-to-late 1970s. AK-230 is a close-in weapon system (CIWS).

• Name — AK-230 / Type 69 • Type — CIWS • Origin — Soviet Union • Is Ranged — Yes • Service — 1969-1990s • Design Date — 1956 • Manufacturer — Tulamashzavod • Production Date — 1959-1984 • Number — 1750 • Variants — See Variants • Weight — * 156 kg per gun • 1974 kg for full mount • Length — 2.140 m • Part Length — 1.897 m • Width — 2.1 m • Height — 1.46 m • Crew — 2 (remote) • Cartridge — 30x210mmB • Cartridge Weight — 1.07 kg to 1.13 kg • Caliber — 30mm • Barrels — 2 • Action — Gas-operated revolver cannon • Rate — 1000 rpm (per barrel) • Velocity — 1050 m/s • Max Range — *6.5 km against surface targets • 4 km against aircraft • 2 km against missiles • Feed — 500-round belt

• Illustration — The rear of an AK-230 on the deck of the ORP Wodnik. Development of the weapon began during the 1950s, with the first trial weapon fitted to the Osa class of fast attack missile boats and Shershen class torpedo boats. The weapon was officially accepted into service in 1969. Its service life was relatively short due to the fielding of the AK-630 system in the mid-1970s, which uses the same mountings and can be controlled by the same fire control systems. While its 30×210 mm round was much more powerful than the AK-630's 30×165 mm one, having the muzzle velocity of 1,050 m/s (the same as with 30×173 mm GAU-8's cartridge), the moderately powered AK-630's round allowed for much higher rates of fire, especially in a Gatling-type weapon, which was considered more advantageous for the anti-aircraft system.

The AK-230 fires specially developed 30x210B 30 mm ammunition that is electrically primed. Two rounds were developed: a high-explosive round with an impact fuze, and an armour-piercing round. The Chinese Type 69 fires only a locally produced version of the high-explosive round. Ammunition is also produced in Romania and Serbia. • Illustration — Dummy cartridge • Type — HE — AP-T • Designation — OF-83D — BR-83 • Weight • Round — 1.13 kg — 1.12 kg • Projectile — 0.27 kg — 0.35 kg • Explosive content — 30 g of A-IX-2 — - • Muzzle velocity — 1,050 m/s

• Calibre: 30 mm • Traverse: +180 to -180 degrees at 35 degree/s • Elevation: -12 to +87 degrees at 50 degree/s • Mounting weight: 1,857 to • Rate of fire: 2,000 rpm (system) • Gun Weight: 156 kg • Gun Length oa: 2.140 m • Bore Length: 1.897 m • Rifling Length: 1.805 m • Grooves: 12 • Chamber Volume: 221.1 cm3 • Rate Of Fire: over 1,000 rounds per minute cyclic

• AK-230 A type - For ships with 220 V DC power systems. • AK-230 B type - For ships with 380 V AC power systems. • AK-230M - Less magnetized version for minesweepers (380 V AC). • Type 69 - Chinese upgraded version, total weight 3,600 kg. Shells are ejected outside of the turret. a faster 50 degree/second traverse.

• Soviet cruiser Mikhail Kutuzov - 8 mounts • Polnocny-class landing ship - 2 or 4 mounts • Project 133.1 corvette - 1 mount • Soviet cruiser Admiral Senyavin - 8 mounts (after 1972 modernization) • Project 57bis - 4 mounts (after modernization) • Project 56 - 4 mounts (after modernization) • Project 205 Moskit - 2 mounts • Project 205P Tarantul - 2 mounts • Project 206 Shtorm - 2 mounts • Project 1159 Del'fin - 2 mounts • Project 12321 Dzheyran - 2 mounts

• Project 257 - 1 mount • Project 266 Rubin - 2 mounts • Project 266M Akvamarin - 2 mounts

• Jane's Naval Weapon Systems Issue Thirty Three • Navy Weapons.com *