20pdr OQF Mk.I (84 mm)
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
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.
|Ammunition|| Type of
|Penetration @ 0° Angle of Attack (mm)|
|10 m||100 m||500 m||1,000 m||1,500 m||2,000 m|
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
- Impressive penetration, negates most armour
- High velocity and low drop, easy to hit moving and distant targets
- Usually stabilized on both axis
- Poor post-penetration damage with all rounds
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 If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: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
Excellent additions to the article would be video guides, screenshots from the game, and photos.
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;
- references to approximate analogues by other nations and research trees.
|Britain tank cannons|
|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||GT-4 · OQF 3-inch Howitzer Mk I · OQF 3in 20cwt · QF 17-pounder|
|77 mm||OQF Mk.II|
|84 mm||20pdr OQF Mk.I · kan Strv 81|
|94 mm||32pdr OQF · OQF Mk.II|
|105 mm||GT-3 · GT-7 · GT-8 · LRF · Royal Ordnance L7A1 · Sharir|
|120 mm||Ordnance QF Tk. L1A2 · Ordnance BL Tk. L11 · L11A5 · L30A1|
|165 mm||ORD BL 6.5in L9A1|
|183 mm||QF L4A1|
|37 mm||M5 (USA) · M6 (USA)|
|75 mm||M2 (USA) · M3 (USA)|