Difference between revisions of "20pdr OQF Mk.I (84 mm)"
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| + | [[File:Weapon 20pdr OQF Mk.I (84 mm).png|thumb|right|x250px|The 20pdr OQF Mk.I (84 mm) on the Centurion Mk.5/1 gun mantlet.]] | ||
| + | |||
== Description == | == Description == | ||
| − | ''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.'' | + | <!-- ''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.'' --> |
| + | The 20pdr OQF Mk.I is a 84 mm British tank cannon, developed after the end of WWII to combat the Soviet [[IS-3]]. It fires a variety of conventional shells, but introduces a new subcalibre APDS round paired with a two-plane stabilizer on all but one of its implementations. | ||
=== Vehicles equipped with this weapon === | === Vehicles equipped with this weapon === | ||
<!-- ''List out vehicles that are equipped with the weapon.'' --> | <!-- ''List out vehicles that are equipped with the weapon.'' --> | ||
| − | * {{Specs-Link|uk_fv221_caernarvon| | + | |
| − | * {{Specs-Link|uk_centurion_mk_3 | + | * {{Specs-Link|uk_fv221_caernarvon}} |
| − | * {{Specs-Link| | + | * {{Specs-Link|uk_centurion_action_x}} |
| − | * {{Specs-Link|uk_charioteer_mk_7| | + | * {{Specs-Link|uk_centurion_mk_3}} |
| − | * {{Specs-Link|uk_fv4202| | + | * {{Specs-Link|uk_centurion_mk_5_raac}} |
| + | * {{Specs-Link|uk_charioteer_mk_7}} | ||
| + | * {{Specs-Link|sw_charioteer_mk_7}} | ||
| + | * {{Specs-Link|uk_fv4202}} | ||
| + | * {{Specs-Link|il_centurion_mk_5_shot}} | ||
== General info == | == General info == | ||
| − | ''Tell us about the tactical and technical characteristics of the cannon or machine gun.'' | + | <!-- ''Tell us about the tactical and technical characteristics of the cannon or machine gun.'' --> |
| + | The 20pdr is first seen on the Charioteer without a stabilizer, but it isn't until it is mounted on the many Centurion variants that it truly shines. Its APCBC round has penetration comparable to the Tiger II's , but as usual for British tanks it lacks explosive filler. The unlockable APDS Mk.3 round, however, can reliably penetrate most tanks frontally with 285 mm of penetration at point blank, with a very high velocity that can allow one to land shots at long range with a punctual consistency. Unfortunately, the great penetration and good ballistics comes at a cost as the APDS round has very poor post-penetration damage, with a narrow cone of damage and no explosive filler. One must have a very extensive knowledge of enemy crew placement or ammo rack locations to reliably eliminate enemy tanks with one shot. For a player less familiar with enemy vehicles at the battle rating, it is advised to try to incapacitate the gunner or knock out the cannon to ensure the tank will not fire back. | ||
=== Available ammunition === | === Available ammunition === | ||
| − | ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' | + | <!-- ''Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' --> |
| + | {{:{{PAGENAME}}/Ammunition|Shot Mk.1, Shot Mk.3, Shell Mk.1, 20pdr Shell SS Mk.1}} | ||
=== Comparison with analogues === | === Comparison with analogues === | ||
| − | ''Give a comparative description of cannons/machine guns that have firepower equal to this weapon.'' | + | <!-- ''Give a comparative description of cannons/machine guns that have firepower equal to this weapon.'' --> |
| + | With the APDS rounds, the 20pdr has a penetration level similar to that of 3BM4 found on the [[T-62]]. The APCBC round's closest analogue is the PzGr. 39/43 found on the late-war German tanks such as the [[Tiger II (Family)|Tiger II]] and [[Ferdinand]]. | ||
== Usage in battles == | == Usage in battles == | ||
| Line 23: | Line 33: | ||
=== Pros and cons === | === Pros and cons === | ||
| − | ''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' | + | <!-- ''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' --> |
| + | '''Pros:''' | ||
| − | + | * Impressive penetration, negates most armour | |
| − | * | + | * High velocity and low drop, easy to hit moving and distant targets |
| + | * Usually stabilized on both axis | ||
'''Cons:''' | '''Cons:''' | ||
| − | * | + | |
| + | * Poor post-penetration damage with all rounds | ||
== History == | == History == | ||
| Line 35: | Line 48: | ||
== Media == | == Media == | ||
| − | '' | + | <!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' --> |
| + | ;Videos | ||
| + | {{Youtube-gallery|JBsxfmmBLho|'''The Shooting Range #311''' - ''Round Study'' section at 08:12 compares the rounds of the British 20-pdr cannon.}} | ||
== See also == | == See also == | ||
| − | ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:'' | + | <!-- ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:'' |
* ''reference to the article about the variant of the cannon/machine gun;'' | * ''reference to the article about the variant of the cannon/machine gun;'' | ||
| − | * ''references to approximate analogues by other nations and research trees.'' | + | * ''references to approximate analogues by other nations and research trees.'' --> |
| + | |||
| + | * [[Kan Strv 81 (84 mm)]] - Swedish variant | ||
== External links == | == External links == | ||
| − | ''Paste links to sources and external resources, such as:'' | + | <!-- ''Paste links to sources and external resources, such as:'' |
| − | * ''topic on the official game forum | + | * ''topic on the official game forum;'' |
| − | + | * ''other literature.'' --> | |
| − | * ''other literature.'' | + | |
| + | * [[wikipedia:Ordnance_QF_20-pounder|[Wikipedia] Ordnance QF 20-pounder]] | ||
{{Britain tank cannons}} | {{Britain tank cannons}} | ||
| + | {{Sweden tank cannons}} | ||
| + | {{Israel tank cannons}} | ||
[[Category:Tank cannons]] | [[Category:Tank cannons]] | ||
Latest revision as of 01:28, 24 January 2023
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Contents
Description
The 20pdr OQF Mk.I is a 84 mm British tank cannon, developed after the end of WWII to combat the Soviet IS-3. It fires a variety of conventional shells, but introduces a new subcalibre APDS round paired with a two-plane stabilizer on all but one of its implementations.
Vehicles equipped with this weapon
- Caernarvon
- Centurion Action X
- Centurion Mk 3
- Centurion Mk.5/1
- Charioteer Mk VII
- ▄Charioteer Mk VII
- FV4202
- Sho't
General info
The 20pdr is first seen on the Charioteer without a stabilizer, but it isn't until it is mounted on the many Centurion variants that it truly shines. Its APCBC round has penetration comparable to the Tiger II's , but as usual for British tanks it lacks explosive filler. The unlockable APDS Mk.3 round, however, can reliably penetrate most tanks frontally with 285 mm of penetration at point blank, with a very high velocity that can allow one to land shots at long range with a punctual consistency. Unfortunately, the great penetration and good ballistics comes at a cost as the APDS round has very poor post-penetration damage, with a narrow cone of damage and no explosive filler. One must have a very extensive knowledge of enemy crew placement or ammo rack locations to reliably eliminate enemy tanks with one shot. For a player less familiar with enemy vehicles at the battle rating, it is advised to try to incapacitate the gunner or knock out the cannon to ensure the tank will not fire back.
Available ammunition
| Penetration statistics | |||||||
|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Penetration @ 0° Angle of Attack (mm) | |||||
| 10 m | 100 m | 500 m | 1,000 m | 1,500 m | 2,000 m | ||
| Shot Mk.1 | APCBC | 232 | 229 | 216 | 201 | 187 | 173 |
| Shot Mk.3 | APDS | 384 | 380 | 363 | 343 | 324 | 306 |
| Shell Mk.1 | HE | 15 | 15 | 15 | 15 | 15 | 15 |
| Shell details | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Velocity (m/s) |
Projectile mass (kg) |
Fuse delay (m) |
Fuse sensitivity (mm) |
Explosive mass (TNT equivalent) (kg) |
Ricochet | |||||
| 0% | 50% | 100% | ||||||||||
| Shot Mk.1 | APCBC | 1,000 | 9.1 | - | - | - | 48° | 63° | 71° | |||
| Shot Mk.3 | APDS | 1,430 | 3.22 | - | - | - | 75° | 78° | 80° | |||
| Shell Mk.1 | HE | 600 | 7.5 | 0.2 | 0.1 | 1.13 | 79° | 80° | 81° | |||
| Smoke shell characteristics | ||||||
|---|---|---|---|---|---|---|
| Ammunition | Velocity (m/s) |
Projectile mass (kg) |
Screen radius (m) |
Screen deploy time (s) |
Screen hold time (s) |
Explosive mass (TNT equivalent) (g) |
| 20pdr Shell SS Mk.1 | 250 | 9.3 | 9 | 5 | 20 | 50 |
Comparison with analogues
With the APDS rounds, the 20pdr has a penetration level similar to that of 3BM4 found on the T-62. The APCBC round's closest analogue is the PzGr. 39/43 found on the late-war German tanks such as the Tiger II and Ferdinand.
Usage in battles
Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.
Pros and cons
Pros:
- Impressive penetration, negates most armour
- High velocity and low drop, easy to hit moving and distant targets
- Usually stabilized on both axis
Cons:
- Poor post-penetration damage with all rounds
History
Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: https://wiki.warthunder.com/(Weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />.
Media
- Videos
The Shooting Range #311 - Round Study section at 08:12 compares the rounds of the British 20-pdr cannon.
See also
- Kan Strv 81 (84 mm) - Swedish variant
External links
| Britain tank cannons | |
|---|---|
| 30 mm | L21A1 |
| 40 mm | QF 2-pounder |
| 47 mm | Ordnance QF 3-pounder |
| 57 mm | 6pdr OQF Mk.III · 6pdr OQF Mk.V |
| 75 mm | OQF Mk.V |
| 76 mm | OQF 3-inch Howitzer Mk I · OQF 3in 20cwt · QF 17-pounder |
| 77 mm | OQF Mk.II |
| 84 mm | 20pdr OQF Mk.I |
| 94 mm | 28pdr OQF · 32pdr OQF · OQF Mk.II |
| 95 mm | Howitzer, Tank No.1, Mk.I |
| 105 mm | LRF · Royal Ordnance L7A1 |
| 120 mm | Ordnance QF Tk. L1A2 · Ordnance BL Tk. L11 · L11A5 · L30A1 |
| 165 mm | ORD BL 6.5in L9A1 |
| 183 mm | QF L4A1 |
| Foreign: | |
| 25 mm | M242 (USA) |
| 37 mm | M5 (USA) · M6 (USA) |
| 75 mm | M2 (USA) · M3 (USA) |
| 84 mm | kan Strv 81 (Sweden) |
| 105 mm | Sharir (Israel) |
| 120 mm | Rh120 L/55 A1 (Germany) |
| 125 mm | 2A46M-5 (Russia) |
| 155 mm | M185 (USA) |
| South Africa | |
| 20 mm | GI-2 |
| 76 mm | GT-4 |
| 90 mm | GT-2 |
| 105 mm | GT-3 · GT-7 · GT-8 |
| 155 mm | G6 L/45 |
| Sweden tank cannons | |
|---|---|
| 20 mm | Akan m/47D · Pvlvkan m/40 |
| 37 mm | kan m/38 |
| 40 mm | akan m/70B |
| 57 mm | Pvkan m/43 |
| 75 mm | kan m/02 · kan m/41 · kan Strv 74 · lvkan m/37 A · pvkan m/43 |
| 84 mm | kan Strv 81 |
| 90 mm | kan Ikv 91 |
| 105 mm | kan Bofors · kan Ikv · kan m/44 · kan Strv 101 · L74 |
| 120 mm | automatkanon · CTG · kan Strv 121 · kan Strv 122 |
| 150 mm | fsthaub m/02 |
| 155 mm | kan m/60 |
| Foreign: | |
| 35 mm | Bushmaster 3 (USA) |
| 73 mm | 2A28 (USSR) |
| 75 mm | M3 (USA) |
| 88 mm | KwK43 (Germany) |
| 105 mm | L/50 (Belgium) · L7A3 (Germany) |
| 125 mm | 2A46M-1 (USSR) |
| 155 mm | CN98 (South Korea) |
| Finland | |
| 37 mm | Psv.K/36 |
| 114 mm | Psv.H/18 |
| Foreign: | |
| 30 mm | Bushmaster 2 Mk.44 (USA) |
| 45 mm | 20-K (USSR) |
| 75 mm | KwK40 L48 (Germany) |
| 76 mm | D-56TS (USSR) · F-34 (USSR) · L-10 (USSR) |
| 77 mm | OQF Mk.II (Britain) |
| 84 mm | 20pdr OQF Mk.I (Britain) |
| 85 mm | ZIS-S-53 (USSR) |
| 100 mm | D-10T (USSR) · D-10T2S (USSR) |
| 105 mm | L/50 (Belgium) |
| 120 mm | Rh120 L/44 (Germany) · Rh120 L/55 (Germany) |
| 125 mm | 2A46 (USSR) |
| Israel tank cannons | |
|---|---|
| 30 mm | Bushmaster 2 Mk.44 (USA) |
| 75 mm | SA50 L/57 (France) |
| 84 mm | 20pdr OQF Mk.I (UK) |
| 90 mm | DEFA F1 (France) · M41 (USA) |
| 100 mm | D-10T (USSR) |
| 105 mm | M-51 (France) · M68 (USA) · Sharir |
| 120 mm | IMI MG251 |
| 155 mm | M126 (USA) · M185 (USA) · Soltam M845 |
