DARDO
OTO Twin 40L70

Type| Close-in weapon system
Place of origin| Italy
Production history
Manufacturer| Oto Melara
Variants| Compact, Fast Forty
Specifications
Mass| Complete gun mount (with ammunition): 5,400–5,600 kg (11,900–12,300 lb)
Complete round (HE): 4.05 kg (8.9 lb)
Height| Enclosed turret: 2.4 m (7 ft 10 in)
Type A mount: 1.3 m (4 ft 3 in)
Type B mount: 0.92 m (3 ft 0 in)
Diameter| Mount ring: 1.7 m (5 ft 7 in)
Working circle: 2.902 m (9 ft 6.3 in)

* * *

Calibre| 40 mm
Barrels| 2 × Breda-built Bofors-40 mm L/70
Elevation| Minimum −13°
Maximum +85°
speed: 60°/s (70°/s Fast Forty)
Traverse| Full 360° traverse, speed: 90°/s (100°/s Fast Forty)
Rate of fire| 2 × 300 round/min
2 × 450 round/min (Fast Forty)
Effective firing range| HE round: 4,000 m (4,400 yd)
Maximum firing range| 12,500 m (7.8 mi) (maximum height 8,700 m (28,500 ft))
Feed system| Magazine:
736 HE rounds (444 Type B mount)
Dual feed mechanism with 736 HE and 200 APFSDS rounds (Fast Forty)
80 ready-to-fire round (Marlin)

DARDO ("Dart" in Italian), also marketed as the OTO Twin 40L70 Compact,[1] is a close-in weapon system (CIWS) built by the Italian companies Breda and Oto Melara. It is composed of two Breda-built Bofors 40 mm firing high explosive (HE) shells, a fire-control radar (RTN-10X) and a fire-control system (RTN-20X and Dardo). It is the last of a long series of Italian anti-aircraft weapons derived from the Swedish Bofors 40 mm autocannons (mounted on Breda built gun mounts such as the Type 64, Type 106, Type 107, Type 564 and Type 520).

## Contents

* 1 Purpose
* 2 Installation
* 3 Other versions
* 3.1 Compact
* 3.2 Fast Forty
* 3.3 Marlin
* 4 Comparison with current CIWS
* 5 Operators
* 5.1 Current operators
* 6 See also
* 7 References
* 8 External links

## Purpose

The system's primary purpose is to defend against anti-ship missiles, unmanned aerial vehicles and other precision guided weapons. It can also be employed against conventional and rotary-wing aircraft, surface ships, small water-crafts, coastal targets and floating mines.

## Installation

DARDO is installed in an enclosed turret with two different mounts: the Type A with 440-round internal and 292-round under-deck magazines; and Type B with only the 440-round internal magazine (Type B requires no deck penetration). However, the most recent OTO Twin 40L70 Compact's brochure nominates 736-round magazine for Type A and 444-round magazine for Type B, both feature deck penetration.[1]

The newest Marlin 40 variant has no deck penetration, having a sole internal magazine for 80 ready-to-fire rounds.[2]

## Other versions

### Compact

The OTO Twin 40L70 Compact is the current marketing name for the DARDO. Option for a stealth cupola is available to reduce the gun mount's RCS.[1]

### Fast Forty

The Single Fast Forty is an improved version of the system with a higher rate of fire, dual magazine and dual feed mechanism to allow switching from HE to armour-piercing fin-stabilized discarding sabot (APFSDS) rounds when a missile gets within 1,000 meters from the vessel. However, unlike the original DARDO/OTO Twin Compact, it is only featured with a single barrel.[3]

### Marlin

The OTO Marlin 40 is the single-barrel, light-weight and no-deck-penetration derivative of the DARDO family, succeeding the Single Fast Forty variant. It is designed with high autonomy and fully-digitalized systems.[2]

## Comparison with current CIWS

Comparison of some modern CIWS |  AK-630[4] |  Phalanx CIWS[5] |  Goalkeeper CIWS |  DARDO[6]

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Weight  | 9,114 kg (20,093 lb)  | 6,200 kg (13,700 lb)  | 9,902 kg (21,830 lb)  | 5,500 kg (12,100 lb)
Armament  | 30 mm (1.2 in) 6 barreled GSh-6-30 Gatling Gun  | 20 mm (0.79 in) 6 barreled M61 Vulcan Gatling Gun  | 30 mm (1.2 in) 7 barreled GAU-8 Gatling Gun  | 40 mm (1.6 in) 2 barreled Bofors 40 mm
Rate of Fire  | 5,000 rounds per minute  | 4,500 rounds per minute  | 4,200 rounds per minute  | 600/900 round per minute
(effective/ flat-trajectory) Range  | 4,000 m (13,000 ft)  | 2,000 m (6,600 ft)  | 3,600 m (11,800 ft)  | 4,000 m (13,000 ft)
Ammunition storage  | 2,000 rounds  | 1,550 rounds  | 1,190 rounds  | 736 rounds
Muzzle velocity  | 900 m (3,000 ft) per second  | 1,100 m (3,600 ft) per second  | 1,109 m (3,638 ft) per second  | 1,000 m (3,300 ft) per second
Elevation  | −13 to +78 degrees  | −75 to +55 degrees  | −75 to +64 degrees  | −13 to +85 degrees
Traverse  | 360 degrees  | -150 to +150 degrees  | 360 degrees  | 360 degrees

## Operators

Map of DARDO operators in blue

### Current operators

* Algeria
* Kalaat Beni Hammed-class landing ship
* Argentina
* Almirante Brown-class destroyer
* Espora-class corvettevideo
* Drummond-class corvette
* Bangladesh
* BNS Bangabandhu
* Colombia
* Almirante Padilla-class frigate
* Ecuador
* Esmeraldas-class corvette
* Quito-class missile boat
* Libya
* Assad-class corvette
* Indonesia
* Makassar-class landing platform dock
* Italy
* Vittorio Veneto-class cruiser
* Giuseppe Garibaldi-class aircraft carrier
* Lupo-class frigate
* Maestrale-class frigate
* South Korea
* Ulsan-class frigate
* Pohang-class corvette
* Malaysia
* Laksamana-class corvette
* Nigeria
* NNS Aradu
* Peru
* Lupo-class frigate
* Carvajal-class frigate
* PR-72P-class corvette
* Philippines
* Pohang-class corvette
* Saudi Arabia
* Al Madinah-class frigate
* Thailand
* Ratanakosin-class corvette
* Venezuela
* Lupo-class frigate
* Vietnam
* Pohang-class corvette

## See also

* Aselsan GOKDENIZ
* Myriad CIWS

## References

1. ↑ 1.0 1.1 1.2 "OTO TWIN 40L70 COMPACT NAVAL MOUNT". Leonardo S.p.A.. https://electronics.leonardo.com/documents/16277707/18299996/OTO+Twin+40L70+(mm08756)_LQ.pdf.
2. ↑ 2.0 2.1 "OTO Marlin 40" (in en-US). Leonardo S.p.A.. https://electronics.leonardo.com/en/products/oto-marlin-40.
3. ↑ "Oto Melara introduced a new version of its FAST FORTY naval mount during IDEF 2013" (in en-gb). 2013-05-20. https://navyrecognition.com/index.php/naval-news/naval-news-archive/year-2013-news/may-2013-navy-world-naval-forces-maritime-industry-technology-news/1053-oto-melara-introduced-a-new-version-of-its-fast-forty-naval-mount-during-idef-2013.html.
4. ↑ "AK-630 Gatling Gun Close in Weapon System". Indian-military.org. 2010-03-12. http://www.indian-military.org/navy/ordnance/close-in-weapon-system/267-ak-630-gatling-gun-close-in-weapon-system.html.
5. ↑ "The US Navy - Fact File". Navy.mil. http://www.navy.mil/navydata/fact_display.asp?cid=2100&tid=800&ct=2.
6. ↑ Tony DiGiulian (2006-05-21). "Italian 40 mm/70 (1.57") Breda". Navweaps.com. http://www.navweaps.com/Weapons/WNIT_4cm-70_Breda.htm.

## External links

* OTO-Melara 40 mm weapon factsheets
* Data and Spec of OtoBreda DARDO
* Images of DARDO and other Breda 40 mm CIWS
* Video of DARDO firing

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