20 mm/70 Oerlikon Mk.II (20 mm)
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.
Vehicles equipped with this weapon
|Vehicles equipped with this weapon|
|SPAA||AEC AA · Crusader AA Mk II|
|Motor torpedo boats||PT-103 · PT-109 · PT-314 · Thunderbolt (PT-556) · PT-565 · PT-71 · PT-200|
|Motor gun boats||PTF-7|
|Fairmile B (ML345) · Fairmile C (332) · SGB Grey Fox · SGB Grey Goose|
|Motor torpedo gun boats||LCS(L)(3) · USS Candid|
|Sub-chasers||SC-497 · PC-451 · Carmi (PC-466)|
|HMCS Brantford · HMS Liscomb|
|Destroyers||USS Barker · USS Aylwin · USS Fletcher · USS Bennion · USS Cowell|
|USS Moffett · USS Phelps · USS Sumner|
|HMS Churchill · HMS Vega · HMS Verdun|
|ORP Garland · HMS Calpe · HMS Jervis · HMS Nepal · HMS Eskimo|
|Light cruisers||USS Cleveland · USS Detroit · USS Helena · USS Raleigh|
|HMNZS Leander · HMS Arethusa · HMS Dido · HMS Enterprise|
|Heavy cruisers||USS Portland · USS Baltimore|
|HMS Hawkins · HMS London · HMS Norfolk · HMS York|
Tell us about the tactical and technical characteristics of the cannon or machine gun.
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).
- Default: AP-T · HEF-I · AP-T - This belt carries an equal mixture of HEF-I and AP-T.
- HET: HEFI-T · HEF-I · HEF-I - This is the belt you want to research first, since they are the best against aircraft.
- APT: AP-T - These are purely AP-T belts. They are not always useful with only 42 mm of penetration, but it is always a good idea to carry a round of them for self-defence; it can knockout lightly armoured vehicles.
|Belt||Penetration @ 0° Angle of Attack (mm)|
|10 m||100 m||500 m||1,000 m||1,500 m||2,000 m|
(TNT equivalent) (g)
Comparison with analogues
Give a comparative description of cannons/machine guns that have firepower equal to this weapon.
Usage in battles
The gun is used as a SPAA on many vehicles. It’s best used against aircraft, but can deal with the lightly armored targets like the R3. If you encounter heavily armored targets, you should take out the barrel and tracks, then wait for friendly tanks to take out the enemy. In naval battles, this is also best used against aircraft of all sizes. The HET shell is extremely good at taking out bigger targets, like bombers or heavy fighters. The gun can take out smaller enemies, like MTBs (Motor Torpedo Boats).
Pros and cons
Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.
- Good fire rate
- HET shells good anti air
- Short reload
- Excellent against lightly armored enemies
- Inadequate against heavily armored targets
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.
Paste links to sources and external resources, such as:
- topic on the official game forum;
- other literature.
|Britain and USA anti-aircraft guns|
|20 mm||M168 · Oerlikon Mk.II|
|30 mm||HSS 831L|
|35 mm||GA-35 · Oerlikon KDA|
|40 mm||Bofors L/60 · Dual Automatic Gun M2 · M266|
|USA naval cannons|
|20 mm||20 mm/70 Oerlikon Mk.II · 20 mm/70 Oerlikon Mark V · 20 mm/70 Oerlikon Mark 24|
|28 mm||1.1 inch/75 Mk.1|
|40 mm||Bofors L/60 Mark 1 · Bofors L/60 Mark 2 · Bofors L/60 Mark 3|
|76 mm||3 inch/23 Mk.4 · 3-inch/50 Mk.10 · 3-inch Mark 10 · 3 inch Mk.33 · 3-inch Mk.34|
|102 mm||4 inch/50 Mk.9|
|127 mm||5 inch/25 Mk.13 AA · 5 inch/38 Mk.12 · 5-inch/50 Mk.5 · 5 inch/51 Mk.7|
|152 mm||6 inch/47 Mk.16 · 6 inch/53 Mk.12|
|203 mm||8 inch/55 Mark 9 · 8 inch/55 Mark 12 · 8 inch/55 Mark 14|
|305 mm||12-inch/45 Mk.5 · 12 inch/50 Mk.7|
|Britain naval cannons|
|20 mm||20 mm/70 Oerlikon Mk.II · 20 mm/70 Oerlikon Mark V · 20 mm/70 Oerlikon Mark 24 · Rh202|
|40 mm||2pdr QF Mk.IIc · 2pdr QF Mk.VIII · 2pdr Rolls Royce · QF Mark V · QF Mark VII · QF STAAG Mark II|
|47 mm||3 pdr QF Hotchkiss|
|57 mm||6pdr 7cwt QF Mk IIA|
|76 mm||3 inch 12pdr 12 cwt QF Mk.V · 3 inch/70 Mark 6 · 76 mm/45 QF 3in 20cwt HA Mark I · 76 mm/50 12pdr 18cwt QF Mark I · OQF 3in 20cwt|
|102 mm||4 inch/40 QF mark III · 4 in QF Mark V · 4 inch/45 Mark XVI · 4 inch/50 BL Mark VII · BL Mark IX|
|114 mm||4.5 inch/45 QF Mark IV · 4.5 inch/45 QF Mark V · 8cwt QF Mk I|
|120 mm||4.7 inch/45 Mk.XII|
|133 mm||5.25 inch/50 QF Mark I|
|152 mm||6 inch/45 BL Mark XII · 6 inch/50 BL Mark XXIII · 6 inch/50 QF Mark N5|
|190 mm||7.5 inch/45 BL Mk.VI|
|203 mm||8 inch/50 Mark VIII|
|305 mm||305 mm/45 Mark X · 12 inch/50 Mark XI|
|40 mm||Bofors L/60 Mark 2 (USA)|
|76 mm||76 mm/62 OTO-Melara Compact (Italy)|