updated links to OTO-Melara videos 06 November 2011 - Added Vulcano 08 January 2013 - Updated to latest template 31 July 2013 - Corrected typographical errors ， combined with the Dardo FCS，000 m) - - 5， faster-firing version designed specifically for anti-ship missile defense. Accuracy was improved compared to the Compact， in Japan by Japan Steel Works and in Spain by FABA (formerly IZAR，" in the words of one of the Project Engineers who worked on the weapon. During a test shoot， India，000 - 3， 400 Hz supply. Mountings are unmanned but require two to three crewmen below deck to reload the revolving magazine. The SR mount performs several operations in parallel that in the Compact were performed in sequence. The recoil length and the firing cycle have been shortened and ramming is not part of the sequence in which the spent cartridge is ejected. Retrofit kits that will allow Compact。
a single gun can deal with up to four subsonic sea-skimmer missiles，520 kg) Elevation -15 / +85 degrees Elevation Rate 35 degrees per second Train unlimited (uses a slip ring) Train Rate 60 degrees per second Gun recoil N/A The complete Mount is a single piece installation and consists of the shank which is below the weather deck，750 yards (40。
which means that the feed can be interrupted to insert different kinds of ammunition， Japan。
there is a tendency for the mount to "self-destruct，。
024 fps (914 - 925 mps) Working Pressure 22.8 tons/in2 (3。
439 kg) SR (without ammunition) : 16，000 m) 21，000 m). This is seen as a crucial milestone，000 m) 43， and a servo-systems control and distribution box. The complete mounting may be divided up into two component groups: The lower structure (below deck) and the upper structure (above deck). Lower structure components deliver an uninterrupted flow of ammunition to the gun. Upper structure components load the ammunition，1.76精品神途，122 yards (18， Super Rapid (SR) and Strales USN : Mark 75 Weight Compact (without ammunition) : 16，200 feet (4， they can fire at very short notice，500 yards (5。
making the gun more flexible against multiple targets. The Italian Navy considers the SR to be an effective anti-missile weapon and new ships are being built with this weapon in place of the twin "Fast 40" used on earlier ships in that role. OTO-Melara estimates that， fire the ammunition and eject the empty powder cases. These mountings are normally controlled remotely，686 lbs. (765 kg) Gun Length oa N/A Bore Length 186 in (4.724 m) Rifling Length 158 in (4.012 m) Grooves 24 Lands N/A Twist Uniform RH 1 in 30 Chamber Volume N/A Rate Of Fire Compact and Mark 75 : 80 - 85 rounds per minute (in automatic mode) Compact with retrofit kit : 100 rounds per minute SR : 120 rounds per minute (139 achieved on trials) Ammunition Type Fixed Weight of Complete Round All except Vulcano : 27.2 lbs. (12.34 kg) Vulcano : N/A Projectile Types and Weights (see Notes 5 and 6) Compact : All types : 13.88 lbs. (6.296 kg) Super Rapid : SAPOM : 14.0 lbs. (6.35 kg) SAPOMER : 14.6 lbs. (6.6 kg) DART : 8.8 lbs. (4.0 kg) 76 mm Vulcano : 11 lbs. (5 kg) Bursting Charge HE-MOM : 1.65 lbs. (0.75 kg) SAPOM : 1.01 lbs. (0.46 kg) Compound A3 HE SAPOMER : 1.15 lbs. (0.52 kg) HEXAL-30 DART : 0.88 lbs (0.4 kg) Vulcano (Pre-fragmented。
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， with OTO-Melara reporting that about 1， pre-fragmented and new Course Corrected Anti-Missile Shell CCAMS. SAPOM and SAPOMER projectiles use base fuzes. MOM-type rounds use tungsten cubes as penetrators. DART stands for "Driven Ammunition Reduced Time of flight." This is a sub-caliber， arriving simultaneously on courses 90 degrees apart，100 yards (1， before any reaches 1， 60 Hz to power the main circuit while the servo and synchro network require a 115V， about five to ten seconds from a cold start. OTO-Melara is now offering the DAVIDE anti-missile system for both new installations and as a retro-fit kit to existing mountings. This system is designed to allow these guns to act as an inner-defense against sea-skimming or diving supersonic and subsonic missiles. The system will be used in conjunction with the steerable DART anti-missile projectile and provides a continuous data stream to all projectiles in flight. Actual bore diameter of all guns is 76.2 mm (3.00"). Gun Characteristics Designation Italy : 76 mm/62 (3") Compact and SR USN : 76 mm/62 (3") Mark 75 Ship Class Used On Compact : USN: Oliver Hazard Perry class Used by fifty nations Super Rapid : Italy: Animoso and Audace Royal Netherlands Navy: M-class frigates Danish: Standard Flex 300 Singapore: 62 m attack craft Canada: Tribal class Date Of Design Compact : About 1963 Super Rapid : N/A Date In Service Compact : First introduced in 1964 USN Mark 75 Introduction: 1971 Super Rapid : About 1988 #p#分页标题#e# Gun Weight (tube and liner) 1。
the weapon was unable to hold a 20-round burst on a 20 x 20 foot (6m x 6m) target at 500 yards (460 m). The "Super Rapid" (SR) is an improved， this weapon has far lower manning requirements and carries a much larger supply of ready-service ammunition。
1-phase。
500 yards (16，000 m) - - - - Mount/Turret Data Designation Single Mountings : Italy : Compact， the DART projectiles correctly entered and followed the guidance beam and maneuvered within the accuracy requirements for distances over 5， the turret on the main deck，400 kg/cm2) Approximate Barrel Life N/A Ammunition stowage per gun Compact : 80 ready rounds on mount SR : 85 ready rounds on mount Misfires must be manually removed. SR Ammunition includes: Multirole pre-fragmented HE-MOM and HE-PF-OM， partly by reducing the weight of the moving parts which reduced the vibration problems. OTO-Melara claims that these changes have reduced the standard deviation values to less than 0.3 milrads (0.017 degrees) at 1，800 lbs. (7， but there are provisions for an emergency local control with a stabilized line-of-sight system for the operator. Mountings need an electrical supply of 440V，000 yards (5，000 m) - - Effective Range 8，000 m(1， OTO-Melara modified the ordnance itself as well as the ammunition feed and fuzing. As a result，620 kg) Strales : N/A Compact (with ammunition and off-mount components) : 18， Commanding Officer. Description One of the most popular naval guns ever produced， the SR can begin engaging attacking missiles at about 6，700 yards (8，000 m) AA @ 85 degrees 13，870 yards (20。
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， Spain and USA. It is manufactured in the United States by United Defense (now part of BAE Systems)，000 m)。
intended to improve the performance of these guns in the antimissile role. OTO-Melara claims that an average of only three of these projectiles are needed per engagement. The proximity fuzes for this munition are said to be effective within 6 feet (2 m) of the water surface and are designed to trigger when within 30 feet (10 m) of the target. A November 2005 OTO-Melara Press Release stated that firing trials with DART had been performed at PISQ (Poligono Interforze Salto di Quirra)，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 110. Compared with the USN 5" (12.7 cm) and Italian 127 mm (5") guns， it will be a factory job. The kit includes a Vulcano programmer and possibly a new automatic feeder system that will hold 80 rounds of four or more ammunition types. A fire control system that will interface with the ship's combat management system will also be part of the kit. Additional Pictures 76 mm (3") Mark 75 aboard USS Curts FFG-38 in July 2003. Detail from US Navy Photograph No. 030718-N-4178C-002.Rear of 76 mm (3") gun on USS Curts FFG-38 in June 2001. Royal Thai Navy (RTN) Chief Petty Officer Second Class (PO2) Bunkurd Wannoo receives basic operating instructions from US Navy (USN) Chief Gunners Mate (GMC) Richard McDonough. US Navy Photograph No. 010626-N-6077T-006.76 mm (3") muzzle brake on USS Curts FFG-38 in June 2001. Unidentified USN Oliver Hazard Perry class frigate in background. US Navy Photograph No. 010626-N-6077T-008.MM Audace. Two 76 mm (3") Compact guns are along the starboard side. Official Marina Militare Italiana (Italian Navy) photograph.Compact guns on Singapore Patrol Boats Brave (95) and Daring (98) in June 2001. The "radar mast" on Daring (98) is actually a light pole on the dock behind her. Detail from US Navy Photograph No. 010613-J-9271Z-008.76 mm (3") Compact on Saudi Arabian Patrol Boat Amr PGG-522 in 1982. Note the Phalanx mount on stern. US Navy Photograph No. DN-SC-82-08857.76 mm (3") SR low-RCS mounting on Japanese Patrol Boat Hayabusa. Photograph courtesy of the JMSDF.76 mm (3") gun on an Australian Adelaide Class Frigate. The unique double plume of smoke forms as a result of the muzzle brake redirecting some of the propellant gasses back towards the gun. Australian Navy Photograph No. FFG01-8098687-030605-008.76 mm (3") Ammunition Stowage. USS Reuben James FFG-57 in October 2002. US Navy Photograph No. 021022-N-4309A-379.Loading a practice round aboard Chilean Navy frigate CS Riveros (FF18) in July 2008. US Navy Photograph No. 080720-N-3931M-078.76 mm (3") guns being built at the OTO-Melara Facility. Photograph copyrighted by Finmeccanica.76 mm (3") Super Rapid (SR) Mounting. Image copyrighted by OTO-Melara.USN 76 mm (3") Mark 75 Sketch from General Specification Sheet. Sketch copyrighted by United Defense.Sketch of Compact Mounting. Image copyrighted by OTO-Melara.Sketch of SR Mounting. Note that the overall length is slightly shorter than in the Compact mounting. Image copyrighted by OTO-Melara.Cutaway view of USN Mark 145 Round.Anti-missile DART sub-caliber projectile. Image copyrighted by OTO-Melara.Vulcano 76 mm projectile. This is the proposed guided version， FMC/NSD (now part of United Defense) won the competition and the first gun mount 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. 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 with a small-hole muzzle brake and fume extractor. The shield is made of fiberglass. There are reports that the Compact has reliability and accuracy problems. When fired at maximum ROF，500 yards (5， Super Rapid and Strales mountings to use the new Vulcano round are being developed. Depending upon the gun configuration， otherwise， the retrofit can be done on the ship， with the first rounds arriving on target at 6， 76 mm (3") Compact on SAS Isaac Dyobha. Photograph courtesy of Comdr. Graham Harrison，600 yards (6， aim the gun， as these tests showed that DART can be successfully guided over the expected engagement ranges. OTO-Melara now plans a 76 mm version of their Vulcano Extended Range munition. This will be essentially a scaled-down version of the 127 mm version and plans are for evaluation rounds for flight testing to be available starting in 2013. See additional information in Mount / Turret Data note below. The HE-MOM round is pre-fragmented to enhance the splinter effect. The Compact uses a single main feed drum which holds 70 rounds. This feeds a central screw hoist which holds six rounds. The hoist leads up to a loading station below the left trunnion. Two arms alternate picking up rounds and placing them into a breech loading drum that holds four rounds. The drum feeds rounds onto a loading tray which also receives the spent cartridge. Range #p#分页标题#e# ElevationShell 13.88 lbs. (6.296 kg) HE14.3 lbs. (6.5 kg) SAPOM14.6 lbs. (6.6 kg) SAPOMERDARTVulcano Range @ 45 degrees 20， formerly Bazn). Under USN nomenclature， these weapons cannot fire any of the more sophisticated munitions as they use a much smaller projectile. Compared to the older USN 3" (7.62 cm) and Italian 76 mm (3") M.M.I. guns， 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. To achieve the higher rates of fire for the SR， SAP) : N/A Projectile Length HE-MOM : 13.98 in (35.5 cm) SAPOM : 14.4 in (36.6 cm) SAPOMER : 14.78 in (37.6 cm) Vulcano : N/A Complete Round : 35.45 in (90.04 cm Propellant Charge 7.85 lbs. (3.56 kg) Cartridge 76.2 mm x 635.5 mm Muzzle Velocity 3。
400 m) 17， guided projectile with canard control，400 lbs. (7，000 Compact and SR guns were in service in 51 navies around the world as of December 2002. This weapon is produced under license in Australia， existing Compact mountings cannot be converted to the SR standard， multipurpose，783 lbs. (8， allowing the gun to fire longer bursts without reloading. As the Compact and SR mountings are very nearly unmanned， semi-armor piercing HE-SAPOM，500 m). With these ranges。
3-phase。
semi-armor piercing extended range HE-SAPOMER， the initial projectile will be unguided. See 127 mm/64 Datapage for other details. Image copyrighted by OTO-Melara. Sources Data from: "Jane's Pocket Book 9: Naval Armament" edited by Denis Archer "The Naval Institute Guide to World Naval Weapon Systems 1991/92" by Norman Friedman "Jane's Ammunition Handbook: Ninth Edition 2000-2001" edited by Terry J. Gander and Charles Q. Cutshaw "Rangefinders: Oto Melara blends performance and economy in land and sea guns" article by Andy Nativi in "Defense Technology International Magazine" November 2011 Press releases and other: Special help by Patrick Vera Page History 21 May 2006 - Benchmark 15 October 2009 - Corrected typographical error 16 June 2010 - Added cutaway view of Mark 165 Round， 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. (Ordnance Systems Division) were both licensed by OTO-Melara and competed for the right to manufacture the Mark 75 in the United States. In 1975， 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， an Italian interservice firing range located in Sardinia. During the firing trials。