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The Obice da 210/22 was an Italian heavy gun introduced into service with the Italian army in 1938, and used by both the Italian and German army during the Second World War. The Obice da 210/22 had a calibre of 210 mm and fired a 101 kg high-explosive shell to a range of 15400 meters at a muzzle velocity of 560 meters-per-second.
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The ODE FH-88 is a Singapore 155 mm gun-howitzer introduced in the Singapore army in 1989. The ODE FH-88 fires a 43 kg high-explosive shell to a range of 19000 meters with a muzzle velocity of 765 meters-per-second.
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The Oerlikon KAA (formerly the Oerlikon Type 204 GK) is a Swiss blowback operated selective fire cannon. The Oerlikon KAA is chambered for a 20 mm cartridge which it takes from a disintegrating link belt feed and fires at a cyclic rate of 1000 rounds per minute with a muzzle velocity of 1050 meters per second.
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The Oerlikon KAB (formerly the Oerlikon 5TG) is a Swiss gas-operated automatic cannon suitable for anti-aircraft and ground target use. The Oerlikon KAB is chambered for a 20 mm round which it takes from a 8-, 20- or 50-round box or drum magazine and fires at a rate of about 1000 rounds per minute with a muzzle velocity of between 1100 and 1200 meters per second.
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The Oerlikon KAD (formerly known as the Hispano-Suiza HS 820) is a Swiss 20 mm calibre, gas-operated single-barrel cannon fitted to various mounts including aircraft. The KAD has a rate of fire of 1000 rounds per minute and a muzzle velocity of 1100 meters-per-second giving an effective range of 1500 meters. The Oerlikon KAD takes a 10-round box , 50-round drum magazine or a belt feed, various models being produced with left and right-hand feed systems.
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The Oerlikon KBA-B is a Swiss 25 mm automatic canon based on the American TRW 6425 cannon. The Oerlikon KBA-B is a gas operated selective fire weapon taking a 25 mm cartridge from a dual selective belt feed and firing at a rate of 570 rounds per minute (the Oerlikon KBA-C01 model with a recoilling barrel has a rate of fire of 600 rounds per minute) with a muzzle velocity of between 1100 and 1325 meters per second depending upon the type of ammunition.
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The Oerlikon KCA is a Swiss 30 mm calibre, gas-operated single-barrel cannon fitted to aircraft. The KCA has a rate of fire of 1350 rounds per minute and a muzzle velocity of 1030 meters-per-second giving an effective range of 2500 meters.
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The Oerlikon KCB (formerly known as the Hispano-Suiza HS 831) is a Swiss blowback operated automatic cannon. The Oerlikon KCB is chambered for a 30 mm cartridge which it takes from a clip or belt feed mechanism and fires at rate of between 600 and 650 rounds per minute with a muzzle velocity of 1080 meters per second.
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The OTO Melara 105 mm Pack Howitzer (or 105/14) is an Italian howitzer produced since 1956 and designed as a light-weight easily transportable field weapon. The OTO Melara 105 mm Pack Howitzer has a calibre of 105 mm and a maximum range of 10,222 meters, or 13,000 meters when firing rocket-assisted shells. It has a normal rate of fire of 1.5 rounds per minute, increasing to a maximum of 4 rounds a minute or 8 rounds per minute in anti-tank operation.
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The OTO-Melara 105 mm Mod 56 is an Italian 105 mm howitzer developed during the 1950s and capable of firing the standard US M1 ammunition. The
OTO-Melara 105 mm Mod 56 fires a 33 lb high-explosive shell to a range of 11100 meters at a muzzle velocity of 416 meters-per-second.
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The Otobreda 127/54 C is a compact dual-purpose 127 mm gun mount, intended as a main armament for frigates and destroyers, providing point defence against attacking aircraft, shore bombardments and anti-ship capability. The loader drums are automatically fed through two hoists manually loaded in the ammunition magazine.
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The Otobreda 127/54 LW is a 127mm calibre lightweight, compact, automatic gun mount intended to confront surface, coastal and aircraft targets. The gun can fire all standard 5 inch ammunition, including guided rounds and a newly developed extended-range ammunition. The 40 ready-to-use rounds are loaded in two modular automatic feeding magazines. The gun mount includes a STEALTH cupola.
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The Otobreda 76/62 SR is a NATO multi-role naval gun intended as an anti-missile, anti-aircraft weapon system with anti-ship and NGS capability. The gun in the anti-aircraft role can use special pre-fragmented ammunition. For surface roles, special types of armour piercing ammunition are available.
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The Otomat is an Italian surface-to-surface missile. It uses mid course guidance and active radar homing. The missile approaches the target in sea skimming mode at high subsonic speed, has a range of over 170 kilometres and is armed with a 210 kg warhead.
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Abbreviations
Warfare
