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Difference between revisions of "Bofors 40mm"

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'''Bofors 40mm''' is the collective name for a series of 40mm autocannons produced by Swedish manufacturer Bofors AB (today part of BAE Systems) starting in 1934; the guns were seldom described with a singular name, generally being referred to by Bofors simply as "40mm Automatic Gun" with a series of descriptors detailing the mounting it came with, its intended role, and its barrel length (in calibers, as is convention for cannons - for example, the common L/60 variant has a barrel ostensibly 60 calibers, or 60x40mm = 2,400mm = 1.2 meters long; the "ostensibly" bit refers to how this nominal length includes the barrel and breech together, with the barrel itself being only 56 1/4 calibers long in most cases). The Bofors guns would end up being wildly successful in their primary intended role as AA guns, being used all across the world (in the form of both Bofors-made guns and license-produced foreign copies), and serving on both sides of World War II in a slew of configurations (in both stationary and wheeled ground mounts, on self-propelled anti-aircraft vehicles like the M19 GMC, on submarines and ships in single-, double-, and often quadruple-mounts, et cetera). Post-war, their utility as AA guns would wane as planes began flying faster and higher with each passing year (even with the development of proximity-fuzed 40mm ammunition), though they continue to see use to this day, notably as the main gun of the Swedish CV9040 infantry fighting vehicle, and as one of the 3 principal armaments of the AC-130 "Spooky" gunship.
 +
 +
Mechanically, the Bofors gun is a long-recoil-operated, striker-fired autocannon with a vertically-sliding breechblock, fed by a somewhat unusual system: a 7-round mechanically-indexed magazine (driven by the movement of the barrel and breechblock) is mounted atop the receiver, which can be replenished at any time with either loose rounds or 4-round stripper clips. The theoretical advantage of this system is that it allows for a relatively continuous rate of fire without needing an overly large or bulky feed system (since the weapon can be quickly and easily topped up by its crew, even while it is actively firing); some variants forgo this in favor of more conventional systems, depending on the specific nature of the mount.
 +
 
==Specifications==
 
==Specifications==
  
−
''(1934-Present)''
+
''(1934 - Present)''
  
 
'''Type:''' Antiaircraft gun
 
'''Type:''' Antiaircraft gun
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==L/60==
 
==L/60==
  
−
[[Image:40mm bofors.jpg|thumb|right|400px|Bofors 40mm L/60 AA gun in a Boffin mounting - 40x311mmR]]
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[[File:40mm bofors.jpg|thumb|right|400px|Bofors 40mm L/60 AA gun in a Boffin mounting - 40x311mmR]]
 
[[File:Bofors 40mm trailer.jpg|thumb|right|400px|Bofors 40mm L/60 AA gun in a wheeled trailer mounting - 40x311mmR]]
 
[[File:Bofors 40mm trailer.jpg|thumb|right|400px|Bofors 40mm L/60 AA gun in a wheeled trailer mounting - 40x311mmR]]
−
[[Image:BoforsTwin.jpg|thumb|right|400px|Bofors 40mm L/60 twin mounting - 40x311mmR]]
+
[[File:BoforsTwin.jpg|thumb|right|400px|Bofors 40mm L/60 twin mounting - 40x311mmR]]
−
[[Image:Bofors40Quad.jpg|thumb|right|400px|Bofors 40mm L/60 quad mounting - 40x311mmR]]
+
[[File:Bofors40Quad.jpg|thumb|right|400px|Bofors 40mm L/60 quad mounting - 40x311mmR]]
 
[[File:Bofors-L60-M42-Duster.jpg|thumb|right|400px|Twin Bofors L/60s mounted in the turret of an M42 Duster SPAAG - 40x311mmR]]
 
[[File:Bofors-L60-M42-Duster.jpg|thumb|right|400px|Twin Bofors L/60s mounted in the turret of an M42 Duster SPAAG - 40x311mmR]]
  
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|-
 
|-
 
| ''[[Breakthrough]]'' || || U.S. soldiers ||  || 1950
 
| ''[[Breakthrough]]'' || || U.S. soldiers ||  || 1950
 +
|-
 +
| ''[[One That Got Away, The (1957)|The One That Got Away]]'' || || British soldiers || single mount on wheeled trailer in AA version || 1957
 
|-
 
|-
 
| ''[[Dunkirk (1958)|Dunkirk]]'' || || British soldiers || single mount on wheeled trailer in AA version || 1958
 
| ''[[Dunkirk (1958)|Dunkirk]]'' || || British soldiers || single mount on wheeled trailer in AA version || 1958
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|-bgcolor=#D0E7FF
 
|-bgcolor=#D0E7FF
 
!align=center bgcolor=#D0E7FF width="200"|'''Title'''
 
!align=center bgcolor=#D0E7FF width="200"|'''Title'''
−
!align=center bgcolor=#D0E7FF width="250"|'''Actor'''
+
!align=center bgcolor=#D0E7FF width="150"|'''Actor'''
−
!align=center bgcolor=#DOE7FF width="325"|'''Character'''
+
!align=center bgcolor=#DOE7FF width="200"|'''Character'''
 
!align=center bgcolor=#D0E7FF width="300"|'''Notation'''
 
!align=center bgcolor=#D0E7FF width="300"|'''Notation'''
 
!align=center bgcolor=#D0E7FF width="100"|'''Date'''
 
!align=center bgcolor=#D0E7FF width="100"|'''Date'''
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|-bgcolor=#D0E7FF
 
|-bgcolor=#D0E7FF
 
!align=center bgcolor=#D0E7FF width="300"|'''Game Title'''
 
!align=center bgcolor=#D0E7FF width="300"|'''Game Title'''
−
!align=center bgcolor=#D0E7FF width="150"|'''As'''
+
!align=center bgcolor=#D0E7FF width="200"|'''As'''
−
!align=center bgcolor=#D0E7FF width="350"|'''Notes'''
+
!align=center bgcolor=#D0E7FF width="400"|'''Notes'''
 
!align=center bgcolor=#D0E7FF width="50"|''' Release Date'''
 
!align=center bgcolor=#D0E7FF width="50"|''' Release Date'''
 
|-
 
|-
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|-  
 
|-  
 
| ''[[Civilization IV]]'' ||  || "Road to War" scenario || 2005
 
| ''[[Civilization IV]]'' ||  || "Road to War" scenario || 2005
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|-
 +
| ''[[Company of Heroes (2006)|Company of Heroes]]'' || "Bofors 40mm Cannon" || || 2006
 
|-
 
|-
 
| ''[[Call of Duty 4: Modern Warfare]]'' ||40mm || mounted on AC-130H Spectre || 2007
 
| ''[[Call of Duty 4: Modern Warfare]]'' ||40mm || mounted on AC-130H Spectre || 2007
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|-
 
|-
 
| ''[[Call of Duty: WWII]]'' || || Single ground mount || 2017
 
| ''[[Call of Duty: WWII]]'' || || Single ground mount || 2017
 +
|-
 +
| ''[[Land of War: The Beginning]]'' || || Single ground mount. Armata przeciwlotnicza 40 mm Bofors wz. 36. Polish variant.|| 2021
 +
|-
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| rowspan=2|''[[Enlisted]]'' || || Single mount || rowspan=2| 2021
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|-
 +
|||Twin mount
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|-
 +
| ''[[Military Conflict: Vietnam]]'' || || M2A1 40mm || 2022
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|-
 +
|}
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 +
===Anime===
 +
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{| class="wikitable" style="font-size: 95%;" border="1" style="border: 1px solid #D0E7FF; background-color:#ffffff; text-align:left; font-size: 95%"
 +
|-bgcolor=#D0E7FF
 +
!align=center bgcolor=#D0E7FF width="300"|'''Title'''
 +
!align=center bgcolor=#D0E7FF width="200"|'''Character'''
 +
!align=center bgcolor=#D0E7FF width="400"|'''Note'''
 +
!align=center bgcolor=#D0E7FF width="50"|'''Date'''
 +
|-
 +
| ''[[Strike Witches 2]]'' || || Single mounts on ''Fletcher''-class destroyers || 2010
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|-
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| ''[[Strike Witches: The Movie]]'' || || Twin mounts at Saint-Trond airbase || 2012
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|-
 +
| ''[[Strike Witches: Operation Victory Arrow]]'' || || Twin mounts at Saint-Trond airbase || 2014-2015
 +
|-
 +
| ''[[Brave Witches]]'' || || Twin mounts at Murman airbase || 2016-2017
 +
|-
 +
| ''[[Strike Witches: Road to Berlin]]'' || || Twin mounts at Saint-Trond airbase || 2020
 +
|-
 +
| ''[[Luminous Witches]]'' || || Twin mounts on ''Sangamon''-class carrier || 2022
 
|-
 
|-
 
|}
 
|}
 +
 
<br clear=all>
 
<br clear=all>
  
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{| class="wikitable" style="font-size: 95%;" border="1" style="border: 1px solid #D0E7FF; background-color:#ffffff; text-align:left; font-size: 95%"
 
{| class="wikitable" style="font-size: 95%;" border="1" style="border: 1px solid #D0E7FF; background-color:#ffffff; text-align:left; font-size: 95%"
 
|-bgcolor=#D0E7FF
 
|-bgcolor=#D0E7FF
−
!align=center bgcolor=#D0E7FF width="400"|'''Title'''
+
!align=center bgcolor=#D0E7FF width="300"|'''Title'''
 
!align=center bgcolor=#D0E7FF width="150"|'''Actor'''
 
!align=center bgcolor=#D0E7FF width="150"|'''Actor'''
 
!align=center bgcolor=#DOE7FF width="150"|'''Character'''
 
!align=center bgcolor=#DOE7FF width="150"|'''Character'''
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|-
 
|-
 
|}
 
|}
−
 
+
<br clear=all>
 
[[Category:Gun]]
 
[[Category:Gun]]
−
[[Category:Machine Gun]]
+
[[Category:Cannon]]

Latest revision as of 13:35, 26 May 2024

Bofors 40mm is the collective name for a series of 40mm autocannons produced by Swedish manufacturer Bofors AB (today part of BAE Systems) starting in 1934; the guns were seldom described with a singular name, generally being referred to by Bofors simply as "40mm Automatic Gun" with a series of descriptors detailing the mounting it came with, its intended role, and its barrel length (in calibers, as is convention for cannons - for example, the common L/60 variant has a barrel ostensibly 60 calibers, or 60x40mm = 2,400mm = 1.2 meters long; the "ostensibly" bit refers to how this nominal length includes the barrel and breech together, with the barrel itself being only 56 1/4 calibers long in most cases). The Bofors guns would end up being wildly successful in their primary intended role as AA guns, being used all across the world (in the form of both Bofors-made guns and license-produced foreign copies), and serving on both sides of World War II in a slew of configurations (in both stationary and wheeled ground mounts, on self-propelled anti-aircraft vehicles like the M19 GMC, on submarines and ships in single-, double-, and often quadruple-mounts, et cetera). Post-war, their utility as AA guns would wane as planes began flying faster and higher with each passing year (even with the development of proximity-fuzed 40mm ammunition), though they continue to see use to this day, notably as the main gun of the Swedish CV9040 infantry fighting vehicle, and as one of the 3 principal armaments of the AC-130 "Spooky" gunship.

Mechanically, the Bofors gun is a long-recoil-operated, striker-fired autocannon with a vertically-sliding breechblock, fed by a somewhat unusual system: a 7-round mechanically-indexed magazine (driven by the movement of the barrel and breechblock) is mounted atop the receiver, which can be replenished at any time with either loose rounds or 4-round stripper clips. The theoretical advantage of this system is that it allows for a relatively continuous rate of fire without needing an overly large or bulky feed system (since the weapon can be quickly and easily topped up by its crew, even while it is actively firing); some variants forgo this in favor of more conventional systems, depending on the specific nature of the mount.

Specifications

(1934 - Present)

Type: Antiaircraft gun

Calibre: 40x311mmR (L/60), 40x364mmR (L/70)

Bore length: L60: Japanese versions 94.5 in (240 cm) (60 calibers), all other WW2 production 88.6 in (225 cm) (56.25 calibers)

Capacity: 7-round integral magazine loaded with 4-round cartridge clips; some versions use alternate feed mechanisms

Fire modes: Safe/Semi/Auto, cyclic rate 120 RPM (L/60), up to 330 RPM (L/70)

L/60

Bofors 40mm L/60 AA gun in a Boffin mounting - 40x311mmR
Bofors 40mm L/60 AA gun in a wheeled trailer mounting - 40x311mmR
Bofors 40mm L/60 twin mounting - 40x311mmR
Bofors 40mm L/60 quad mounting - 40x311mmR
Twin Bofors L/60s mounted in the turret of an M42 Duster SPAAG - 40x311mmR

Film

Title Actor Character Notation Date
Breakthrough U.S. soldiers 1950
The One That Got Away British soldiers single mount on wheeled trailer in AA version 1957
Dunkirk British soldiers single mount on wheeled trailer in AA version 1958
Reptilicus Danish soldiers Single AA mounts, twin mount of Danish Navy Flora 1961
Gorgo Mounted on Royal Navy and US Navy ships in single, twin and quad mountings 1961
The Longest Day German soldiers single mount on wheeled trailer in AA version 1962
The Eye of the Monocle (L'oeil du monocle) Mounted on French Navy L'Opiniatre 1962
Operation Crossbow Single ground mount 1965
Is Paris Burning? Free French Forces soldiers 1966
The Dirty Dozen Single ground mount under tow, playing a German AA gun 1967
The Bridge (Most) Seen on partisans base 1969
We Want the Colonels (Vogliamo i colonnelli) Single ground mount under tow 1973
The Tree of Guernica (L'arbre de Guernica) Spanish Nationalists Single mount on wheeled trailer 1975
The Eagle Has Landed German soldiers single mount on wheeled trailer in AA version 1976
Soldier of Orange German soldiers single mount on wheeled trailer in AA version 1977
1941 American soldiers Single ground mount 1979
1941 Ned Beatty Ward Douglas Single ground mount 1979
Concorde Affaire '79 Single mount on French patrol boat P659 Canopus 1979
The Naked Gun 2 1/2: The Smell of Fear O.J. Simpson Detective Nordberg Single ground mount dressed up to resemble a giant Browning M1919 1991
Bullet Ballet archive footage 1998
The Thin Red Line Naval twin mount 1998
Stealth American soldiers Single ground mount 2005
Flags of Our Fathers Marines Naval Mk 12 quad mount 2006
Transformers Mounted on AC-130U "Spooky" gunship 2007
Lone Survivor Mounted on AC-130U "Spooky" gunship 2013
Tom of Finland Finnish soldiers single mount on wheeled trailer in AA version 2017
Dunkirk British soldiers single mount on wheeled trailer in AA version 2017
The Unknown Soldier Finnish soldiers single mount on wheeled trailer in AA version 2017

Television

Title Actor Character Notation Date
Band of Brothers British soldiers "Currahee" (Ep.1) 2001
Ultimate Force UN forces Trailer mounted 2002
Foyle's War - Season 2 British soldiers "Fifty Ships" (S2E1) and "Among the Few" (S2E2) 2003
Foyle's War - Season 3 "A War of Nerves" (S3E4); Mounted on Royal Navy destroyer 2004
Dunkirk British soldiers single mount on wheeled trailer in AA version 2004
Sea Patrol Single naval mount on Australian Fremantle-class patrol boat 2007
Atonement British soldiers 2007
Ultimate Weapons on AC-130 Spooky 2010
Loki - Season 1 USS Eldridge sailors Mounted on USS Eldridge; "Journey Into Mystery" (S1E05) 2021

Video Games

Game Title As Notes Release Date
Battlefield: 1942 2002
Medal of Honor: Pacific Assault Single ground mount 2004
Civilization IV "Road to War" scenario 2005
Company of Heroes "Bofors 40mm Cannon" 2006
Call of Duty 4: Modern Warfare 40mm mounted on AC-130H Spectre 2007
Dark Sector Single naval mount on a submarine 2008
Mare Nostrum unusable 2008
Call of Duty: World at War L/60 quad mounting 2008
Battlefield: 1943 Single ground mount 2009
Battlefield: Bad Company 2 Single ground mount 2010
Medal of Honor L/60 Bofers cannon mounted on AC-130 Spooky II 2010
Call of Duty: Modern Warfare 3 40mm mounted on AC-130 Spooky II 2011
Company of Heroes 2 Single ground mount; The Western Front Armies 2014 2010
Battlefield 4 mounted in AC130 2014
Battlefield Hardline mounted to a grounded AC130 2015
Call of Duty: WWII Single ground mount 2017
Land of War: The Beginning Single ground mount. Armata przeciwlotnicza 40 mm Bofors wz. 36. Polish variant. 2021
Enlisted Single mount 2021
Twin mount
Military Conflict: Vietnam M2A1 40mm 2022

Anime

Title Character Note Date
Strike Witches 2 Single mounts on Fletcher-class destroyers 2010
Strike Witches: The Movie Twin mounts at Saint-Trond airbase 2012
Strike Witches: Operation Victory Arrow Twin mounts at Saint-Trond airbase 2014-2015
Brave Witches Twin mounts at Murman airbase 2016-2017
Strike Witches: Road to Berlin Twin mounts at Saint-Trond airbase 2020
Luminous Witches Twin mounts on Sangamon-class carrier 2022


L/70

Bofors 40mm L/70 on Bundesmarine Jaguar-class torpedo boat Kranich - 40x365R mm

Film

Title Actor Character Notation Date
The Seventh Company Outdoors (La 7ème compagnie au clair de lune) Mounted on German patrol boat 1977
April Captains (Capitães de Abril) Mounted on Portuguese corvette 2000


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