The Bofors 57 mm guns are a series of dual-purpose naval guns designed and produced by the Swedish arms manufacturer AB Bofors (since March 2005 part of BAE Systems AB). Designed in 1964 as an evolution of the 57 mm lvakan M/50 used on the Halland class destroyers, production of the baseline 57 mm Mark 1 variant began in 1966 and was initially used to equip smaller coastal patrol craft and fast attack craft . The gun is remotely controlled, usually by a fire-control computer but as a redundancy measure the crew can also train and aim the gun using instrument panels that are either on or in direct contact with the gun. Although the Swedish Navy is the primary user of the gun, it has been exported widely by Bofors Defence for use by the navies of Brunei, Canada, Croatia, Finland, Indonesia,
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| - The Bofors 57 mm guns are a series of dual-purpose naval guns designed and produced by the Swedish arms manufacturer AB Bofors (since March 2005 part of BAE Systems AB). Designed in 1964 as an evolution of the 57 mm lvakan M/50 used on the Halland class destroyers, production of the baseline 57 mm Mark 1 variant began in 1966 and was initially used to equip smaller coastal patrol craft and fast attack craft . The gun is remotely controlled, usually by a fire-control computer but as a redundancy measure the crew can also train and aim the gun using instrument panels that are either on or in direct contact with the gun. Although the Swedish Navy is the primary user of the gun, it has been exported widely by Bofors Defence for use by the navies of Brunei, Canada, Croatia, Finland, Indonesia,
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| Footer
| - Comparisons between the Mark 3 guns
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| part length
| - * Bore length:
* Without flash hider:
* With flash hider:
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| Origin
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| Rate
| - * Mark 1: 200 rounds/min
* Marks 2 & 3: 220 rounds/min
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| Service
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| Name
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| is artillery
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| Type
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| Align
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| Caption
| - A Bofors 57 mm Mk 1 live-firing on the Swedish Spica-II Class FAC
- The 57 mm Mk 3 on the bow of a Hamina-class missile boat; note the prominent but small radome above the gun barrel which is used for measuring muzzle velocity of the departing projectile
- firing its Mk 110 57mm gun
- The 57 mm Mk 3 in a stealth cupola aboard a Visby-class corvette, the stealth version of the Mk 110 57 mm is similar in appearance
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| Width
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| traverse
| - * Marks 1 & 2: 55°/s
* Mark 3: 57°/s
- Full 360°:
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| Cartridge
| - 57(xsd:integer)
- complete round
- pre-fragmented shell
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| Weight
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| Caliber
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| Manufacturer
| - * Bofors Defence
* United Defense
* BAE Systems AB
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| Sights
| - Gyro-stabilized in local control.
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| Image
| - US Navy 100622-N-7058E-161 The littoral combat ship USS Freedom fires its MK 110 57mm gun during a surface gunnery test.jpg
- HMS Härnösand and soldiers.jpg
- Missile boat Pori bow 57 mm gun.JPG
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| Used by
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| is ranged
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| Action
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| production date
| - * Mark 1: 1966
* Mark 2: 1985
* Mark 3: 2000
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| barrels
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| design date
| - * Mark 1: 1964
* Mark 2: 1981
* Mark 3: 1995
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| Variants
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| Elevation
| - * Mark 1: −10°/+78°
* Mark 2: -10°/+75°
* Mark 3: -10°/+77°
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| feed
| - dbkwik:resource/3RKNSr7SKaHLk4YeRC8Xyw==
- * Mark 1: 40 ready rounds, 128 rounds in ready racks in mount
* Mark 2: 120 ready rounds, up to 40 rounds in dual hoists
* Mark 3: 120 ready rounds, up to 40 rounds in dual hoists, 1,000 rounds in mounting
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| abstract
| - The Bofors 57 mm guns are a series of dual-purpose naval guns designed and produced by the Swedish arms manufacturer AB Bofors (since March 2005 part of BAE Systems AB). Designed in 1964 as an evolution of the 57 mm lvakan M/50 used on the Halland class destroyers, production of the baseline 57 mm Mark 1 variant began in 1966 and was initially used to equip smaller coastal patrol craft and fast attack craft . The gun is remotely controlled, usually by a fire-control computer but as a redundancy measure the crew can also train and aim the gun using instrument panels that are either on or in direct contact with the gun. Although the Swedish Navy is the primary user of the gun, it has been exported widely by Bofors Defence for use by the navies of Brunei, Canada, Croatia, Finland, Indonesia, Ireland, Malaysia, Mexico, Montenegro, Singapore, Thailand and the United States. The gun was upgraded and improved several times, first the Mark 2 in 1981 which drastically lowered the weight as well as introduced new servo stabilisers. The Mark 3 came in 1995 with modifications made to enable the smart ammunition developed.
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