dr Marinko Aleksić dipl.inž.



OTO – Melara 76 mm
OTO – Melara 76 mm
OTO – Melara 76 mm
One of the most popular naval guns
          ever produced
General Characteristics

Primary Function: S...
OTO-Melara
One of the most popular naval guns ever produced, with OTO-Melara reporting
                                   ...
Sketch of Compact Mounting
Inside
Muzzle Break
The unique double plume of smoke forms as a result of the muzzle brake

   that redirects some of the propulsion gasses ba...
The double plume of smoke forms
Ammunition Stowage
Rear of 76 mm (3") gun
Loading a practice round
Super Rapid
Super Rapid
Super Rapid
The "Super Rapid" (SR) is an improved, faster-firing version
designed specifically for anti-ship missile defen...
Super Rapid
To achieve the higher rates of fire for the SR, OTO-Melara modified the ordnance itself as
                   ...
Top Otto Melara 76 Mm
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Top Otto Melara 76 Mm

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Top Otto Melara 76 Mm

  1. 1. dr Marinko Aleksić dipl.inž. OTO – Melara 76 mm
  2. 2. OTO – Melara 76 mm
  3. 3. OTO – Melara 76 mm One of the most popular naval guns ever produced General Characteristics Primary Function: Single barrel, lightweight, water-cooled, rapid fire, remote controlled, dual purpose automatic enclosed naval gun. Contractor: Designed by OTO Melara, Italy Range: 10 nautical miles (11.5 statue miles, 18.4 km). Type Fire: 80 rounds per minute automatic. Caliber: 76 mm (3 inch). Guidance System: MK 92 Fire Control System.
  4. 4. OTO-Melara One of the most popular naval guns ever produced, with OTO-Melara reporting OTO- that about 1,000 Compact and SR guns were in service in 51 navies around the navies world as of December 2002. This weapon is produced under license in Australia, India, Japan, Spain and USA. It is manufactured in the United States by United Defense (now part of BAE Systems), in Japan by Japan Steel Works Steel and in Spain by FABA (formerly IZAR, formerly Bazán). Under USN Bazá nomenclature, the Compact is designated as the Mark 75. USN ships use the Mark 92 FCS which is the USN's version of the Signall M20 series FCS. The Naval Systems Division (NSD) of FMC Corporation and General Electric Co. Electric (Ordnance Systems Division) were both licensed by OTO-Melara and competed OTO- for the right to manufacture the Mark 75 in the United States. In 1975, FMC/NSD (now part of United Defense) won the competition and the first gun mount gun produced in the United States was delivered in August 1978. Since 1981 all Mark 75 orders for the USN were competed for by FMC/NSD and OTO-Melara. OTO- The Compact was developed from the earlier 76 mm/62 M.M.I. mounting and uses a two-piece water-cooled barrel with a replaceable liner. The gun is fitted two- water- with a small-hole muzzle brake and fume extractor. The shield is made of small - fiberglass.
  5. 5. Sketch of Compact Mounting
  6. 6. Inside
  7. 7. Muzzle Break
  8. 8. The unique double plume of smoke forms as a result of the muzzle brake that redirects some of the propulsion gasses back towards the gun
  9. 9. The double plume of smoke forms
  10. 10. Ammunition Stowage
  11. 11. Rear of 76 mm (3") gun
  12. 12. Loading a practice round
  13. 13. Super Rapid
  14. 14. Super Rapid
  15. 15. Super Rapid The "Super Rapid" (SR) is an improved, faster-firing version designed specifically for anti-ship missile defense. Accuracy was improved compared to the Compact, partly by reducing the weight of the moving parts. OTO-Melara claims that these changes have reduced the standard deviation values to less than 0.3 milrads (0.017 degrees) at 1,000 m (1,100 yards) per burst of 10 rounds when fired at the maximum ROF. The gun shield for the SR is a rounded design similar to that for the Compact. However, this similarity is only skin-deep as the SR mounting has been strengthened in order to resist overpressures up to 14 psi (1.0 kg/cm2) vs. a 7 psi (0.5 kg/cm2) rating for the Compact mounting. As an option, both the Compact and the SR are available with a boxier-looking reduced radar cross section (RCS) gun shield and one of these was used to arm the French-built Saudi Arabian frigate Makkah.
  16. 16. Super Rapid To achieve the higher rates of fire for the SR, OTO-Melara modified the ordnance itself as OTO- well as the ammunition feed and fuzing. As a result, existing Compact mountings cannot be converted to the SR standard, but a retrofit kit is available that does increase the ROF for the older weapon. The magazine for the SR is independent of the turret, which means means that the feed can be interrupted to insert different kinds of ammunition, making the gun ammunition, more flexible against multiple targets. The Italian Navy considers the SR to be an effective anti-missile weapon and new ships are anti- being built with this weapon in place of the twin "Fast 40" used on earlier ships in that "Fast 40" role. OTO-Melara estimates that, combined with the Dardo FCS, the SR can begin OTO- begin engaging attacking missiles at about 6,600 yards (6,000 m), with the first rounds arriving on target at 6,000 yards (5,500 m). With these ranges, a single gun can deal with up to four subsonic sea-skimmer missiles, arriving simultaneously on courses 90 degrees apart, sea- before any reaches 1,100 yards (1,000 m). As of this time (March 2006), the USN has no plans to use the SR version. Existing ships will continue to use the Compact and newer ships are being fitted with the 57 mm Mark fitted 110. 110 . OTO-Melara is now offering the DAVIDE anti-missile system for both new installations and OTO- anti- as a retro-fit kit to existing mountings. This system is designed to allow these guns to act retro- as an inner-defense against sea-skimming or diving supersonic and subsonic inner- sea- missiles. The system will be used in conjunction with the steerable DART anti-missile anti- projectile and provides a continuous data stream to all projectiles in flight. projectiles Actual bore diameter of all guns is 76.2 mm (3.00").

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