40 mm naval gun pdf download

The gun is a development of the original 40 mm bofors gun, the term l70 referring to the length of the barrel in caliber. Made as part of the wwii war effort by chrysler, the bofors gun team shows the manufacture of the bofors 40mm antiaircraft gun then in use by the navy and army. Bae systems wins 40 mk4 naval gun contract for brazil. Bofors 40 mm antiaircrft autocannon the bofors 40 mm gun is an antiaircraft autocannon designed in the 1930s by the swedish defense firm of ab bofors. Oct 21, 2016 thales rapidseaguardian naval gun system. Local stocks of some countries were augmented by purchase of guns from other suppliers the british inventory not only featured local vickersproduced bofors 40mm guns but also took on deliveries from bofors guns built in poland to shore up numbers. As a result it is at least 40 per cent lighter, smaller and cheaper, making it ideal for smaller patrol and antipiracy craft. Oto melara compact 40fast 40 systems archived 52006 orientation description. Navy recognition is reporting the announcement of a new 40mm naval gun system, based on an existing land based system pdf.

Aug 06, 2014 the navy has apparently made a decision i find incomprehensible. Except for the barrel assemblies, the components were not interchangeable. Folks, 40 mm antiaircraft gun, op 820, 1943, is a navy service manual for the most widely used antiaircraft gun of ww ii in this online version of the manual we have attempted to keep the flavor of the original layout while taking advantage of the webs universal accessibility. Bofors 40mm series towed antiaircraft gun air defense gun. The firecontrol system also includes a computer and laser range finder. Towed variants edit bofors gun in at position on a mound overlooking the beach in algeria, 1943. United states naval gun terminology indicates the gun barrel had an internal diameter of 8 inches 203 mm, and the barrel was 55 calibers long barrel length is 8 inch. It has the capability to rapidly switch between optimised ammunition types, including. As a result it is at least 40 per cent lighter, smaller and cheaper, making it ideal for smaller patrol. The first version of the 40 mm the navy ordered was intended for use on. Navy to adopt their gun, but the bofors had a significantly higher muzzle velocity, the british gun could not be converted to use american powder in place of british cordite, and the british army.

The bofors 40 mk4 naval gun system was designed to be an agile, flexible weapon systems that enable a lightningquick response. It is claimed to be a new generation ciws effective against super sonic seaskimming missile thanks to the airburst ammunition, as well as against asymmetric threats while having about. The 12 cm45 gun designed in 1895 was an indigenous variant of an elswick ordnance company export design known as the pattern y. Widely used on variety of ships starting in the early 1930s, until replaced by the more effective bofors 40 mm gun in the mid1930s on new construction and existing ships for example the cruiser java in 19371938. Cruiser java and sumatra until replaced by bofors 40 mm. In this online version of the manual we have attempted to keep the flavor of the original layout while taking advantage of the webs universal accessibility. This was the most widely used antiaircraft gun of ww ii. They have decided to alter the ddg design, replacing the two 57mm mk110 mounts the same gun on the bertholf class and projected for the opc with two 30mm mk 46. It was one of the most popular mediumweight antiaircraft systems during world war ii, used by most of the western allies as well some captured systems being used by the axis powers. Introduced in 1932, the swedish bofors 40mm excelled in both land and naval roles as an air defense gun it still sees service today. Survivability in such an environment requires an extremely flexible weapon system. The mounting hardware of both the land and navalbased gun versions allowed for a full 360degree traversal of the gun while elevation angles.

For example, oqf 40 mm mark ix was the designation of the bofors gun used in the mark v mounting. Armstrong whitworth 12inch 40calibre naval gun wikipedia. Aug 20, 2012 30mm ascg ciws atlantic patrol task south, hms montrose firing the port 30 mm somewhere in the south atlantic. This manual discusses how to train the unit to use the mk 19, 40mm. Bofors 40 mk4 naval gun system bae systems 40mm datasheet. Bofors 40 mk4 naval gun todays naval assets need to swiftly adapt to an unprecedented range of roles and scenarios. While the guns designation says 50 cal, the barrel was probably 54 cal long one source says 60 cal and the 725 g shell was fired at 810 ms, giving a muzzle energy me of c.

Breda claims that a twin fast forty, firing 900 rounds per minute, can kill an incoming supersonic missile flying in a straight line at ranges as great as 3,280. Description the mk 38 is a 25 mm machine gun system mgs installed for ship selfdefense to counter fast attack crafts and fast inshore attack crafts. Contents rosoboronexport 5 medvedka smallsize antisubmarine missile system. Different browsers and fonts will cause the text to move, but the text. May 02, 2016 the 127 mm 5 gun is the standard largecaliber naval gun of most western navies. The otobreda 127mm54 compact 12754c gun is a dual purpose naval artillery piece built by the italian company oto melara. They have decided to alter the ddg design, replacing the two 57mm mk110 mounts the same gun on the bertholf class and projected for the opc with two 30mm mk 46 according to the us naval institute news, the navy has replaced two 57mm guns planned on the zumwaltclass guided. The gun uses an automatic loading system where 66 127mm rounds of various kinds can be stored. Different guns identified by mark numbers of this caliber were used by the u.

The bofors 40 mm gun, often referred to simply as the bofors gun, is an antiaircraft autocannon designed in the 1930s by the swedish arms manufacturer ab bofors. It was intended for the royal navys royal sovereignclass battleships, but budgetary constraints delayed their introduction. We offer this manual on the web site because it covers the single 40mm mount m3 used on many small ships. It is usually designated as a dualpurpose gun capable of handling surface and aerial threats, but its ability to handle fast moving flying objects like cruise missiles and fighter jets is pretty limited. The bofors 40 mm gun, often referred to simply as the bofors gun, is an anti aircraft autocannon. The navy has apparently made a decision i find incomprehensible. The gun itself is an enlarged version of the 105 mm weapon used in the british army abbot selfpropelled gun. Chief gunners mate anthony russell observes safety handling operations of a 40mm saluting battery with sailors assigned to weapons department.

Bofors 40mm mk4 naval gunanimation 3d model available on turbo squid, the worlds leading provider of digital 3d models for visualization, films, television, and games. This required that the propellant charge be loaded in a. The 40 mk4 gun is the latest naval version of the successful bofors 40mm gun that is used by many navies and coast. Oto melara compact 40fast 40 systems archived 52006. The single was to be exchanged for a twin 40 mm antiaircraft gun mount and the twin for a quadruple 40 mm mount.

Its low weight and compact dimensions combine with a long range and a high rate of fire. The 17 cm sk l40 was a kaiserliche marine naval gun that was used on two classes of german predreadnought battleships the braunschweigclass and the deutschlandclass as their secondary battery. This gun had a long road to travel to gain acceptance onto usn ships. Later they were adapted for land service during world war i and world war ii.

I do not know accuracy of figures, though sounds reasonable given the 40mm round is heavier and has more mv the penetration should be more than the 25mm, but who really knows. The bofors 40 mm gun is a famous antiaircraft autocannon designed by the swedish firm of bofors. These are in general good weapons, having high rates of fire and some with dualfeed he and ap capabilities. The armstrong whitworth 12inch naval gun of 40 calibres length was designed by and manufactured mainly by armstrongs ordnance branch, elswick ordnance company.

The latest version of the 40mk4 naval gun uses electrical power rather than hydraulic systems to aim the gun. Mod 1 performed effectively in navy riverine patrol craft and broader. It was one of the most popular mediumweight antiaircraft systems during world war ii, used by most of the western allies as well as by the axis powers. May 19, 2015 bae systems wins 40 mk4 naval gun contract for brazil. The recuperator spring encircles the rear part of the barrel and this, together with the recuperator spring, forms an easily exchangeable unit. As modified, the m1a1 and m1a2 models remained in use throughout wwii, although production ended in 1944. The design likely had its origins with the german krupp works, but when german arms manufacturing was suppressed following the first world. New bae systems 40 mk4 naval gun is 40 percent lighter. However, the gun was not operationally evaluated for naval use until the summer of 1987. It has the capability to rapidly switch between optimised. A swedish design dating from 1929, it was manufactured and used by all the allied powers, beginning with the poles in the mid1930s, who also manufactured a number for the british. The bofors defence 40 mm bofi bofors optronic fire control instrument gun system consists of a modified version of the basic 40 mm l70 type b, bofi electro optic fire control system and proximity fused ammunition. The most effective use of the 37 mm gun was probably in combination with a pair of. Bofors 40 mm gun mounted on jcg akitsushimaplh32 left front view at port of kobe july 9, 2017.

Mar 07, 2019 production of the gun was seen all across europe by the time of the start of world war 2 on september 1st, 1939. The maintenance manual for the dual bofors 40mm gun. The 7662 super rapid sr gun mount is a light weight, rapidfire naval gun providing unrivalled performance and flexibility in any air defence and anti surface. When survival hangs on a matter of seconds, they must be equipped with agile, flexible weapon systems that enable a lightningquick response. The mono bloc barrel is provided with a flash suppresser. The 57mm mk110 has this flexibility, which is proven by the fact that it is the deck gun of choice for the us coast guards national security cutter and offshore patrol cutter classes of ships, as well as for the us navys lcs ships. This was one of the most stunning manufacturing feats of the war, since the bofors was an extremely intimidating weapon to mass produce and many believed it could not be produced in. The bofors 40 mm gun, often referred to simply as the bofors gun,4 is an antiaircraft autocannon designed in the 1930s by the swedish arms manufacturer ab bofors.

The navy soon narrowed its choices to either the bofors or the british 40mm pompom to replace its 1. Bofors 40mm mk4 naval gun animation 3d model available on turbo squid, the worlds leading provider of digital 3d models for visualization, films, television, and games. Dec, 2014 this gun had a long road to travel to gain acceptance onto usn ships. Description the mark 46 gws is a remotely operated naval gun system that uses a 30mm high velocity cannon, a forward looking infrared sensor, a low light.

The usn 40 mm56 mark 1 and 40 mm56 mark 2 bofors guns were both watercooled and were used for all twin and quad mountings. If the round is optimised for the new bushmaster iv gun penetration will increase up to 50%. Clicking the download button will open this data sheet in a new tab and it can be saved as a. Manufacture of the bofors 40mm antiaircraft gun at. It has the capability to rapidly switch between optimised ammunition types, including programmable 40mm 3p alltarget ammo. In 1977 the chief of naval operations cno approved their use to replace aging 20 mm mark 16 guns, which were difficult to maintain and did not use standard nato ammunition. A redesign in 1922 called the 12 cm 11th year type naval gun model 1922 with a shorter gun barrel and a horizontal sliding breechblock was used on submarines and torpedo boats. These guns are much faster reacting than the world war ii era bofors 40 mm56, but perhaps their greatest feature, at least when used in the antimissile mode, is their higher accuracy. It was the standard weapon for japanese destroyers between 1928 and 1944 except akizuki and matsu classes. In the 1960s, otobreda started building the model 1948 under license from bofors, but since that time they have developed many of their own versions. Differences of navy and army guns naval guns carried the traditional navy mk mark designation while army guns carried the m model designation. The bofors 40 mk4 naval gun system is designed to meet that demand. Bofors 40 mk3 gun system with its high rate of fire and immediate switch capability between optimized ammunition types, including the smart 40 mm 3p alltarget ammunition, provides high survivability and tactical.

Bofors 40 mk3 naval gun system expect the unexpected. These ops were conducted during a 21gun salute evolution aboard the future amphibious assault ship uss america lha 6 before the ship anchored off the coast of callao, peru, for a scheduled port visit. It has been credited as a true dualpurpose gun, but this was more a nominal capability than real, as its bag. The bofors 57 mm l70 naval guns are a series of dualpurpose naval guns designed and. The 17 cm sk l40 gun although designated as 17 centimeters 6. Bofors 40 mm gun mounted on jcg akitsushimaplh32 helicopter hangar left front view at port of kobe july 9, 2017. Mk 38 mod 3 machine gun system mgs bofors 40 mk4 naval gun. It used the krupp horizontal slidingblock, or wedge, as it is sometimes referred to, in a breech loading design, rather than the interrupted screw commonly used in the heavy guns of other nations. The bofors was the best medium antiaircraft gun of the war. Note that the m1 gun is the same as found in the double and quad mount manuals also on this site. It is claimed to be a new generation ciws effective against super sonic seaskimming missile thanks to the airburst ammunition, as well as against asymmetric threats while having about the same footprint and weight as. The gun mount operates with a high fire rate, 40mm cannon fed through a 72 readytofire round magazine capable of managing a dual feed ammunition system.

The mark 1 was a lefthand weapon while the mark 2 was a righthand weapon. It uses the 127mm round which is also used in the 5 inch 54 gun, albeit that this gun calibre is measured in united states customary units rather than metric. Since it is of little use in adverse weather it is called a fair weather system. The 855 caliber gun spoken eightinchfiftyfivecaliber formed the main battery of united states navy heavy cruisers and two early aircraft carriers. It has been credited as a true dualpurpose gun, but this was more a nominal capability than real, as its bag propellant and need for hand ramming. L70 l70 l70 bofors 40mm automatic antiaircraft gun data. For all guns except those built by japan, the barrel itself, which has a bayonet joint for easy disassembly, is 68. Fully automatic, and for that reason, designated machinegun mitrailleur in the rnethnavy. Ippsa is easy to use it automates numerous manual hr and. Sponsor general direction for naval constructions and naval weapons piazza della marina 100196 rome italy status.