Difference between revisions of "2pdr QF Mk.IIc (40 mm)"

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== General info ==
 
== General info ==
 +
<!--''Tell us about the tactical and technical characteristics of the cannon or machine gun.''-->
 
The 2pdr "Pom-pom" autocannons is a 40 mm anti-air autocannons that entered the services with the Royal Navy in 1917. The gun is a belt-fed autocannons with 56 rounds capacity per belt and a rate of fire of 200 rounds per minute. The gun were usually found in either a single-mounted version on a coastal boat and an early destroyer, as well as a quad mount version found on a British wartime destroyer.
 
The 2pdr "Pom-pom" autocannons is a 40 mm anti-air autocannons that entered the services with the Royal Navy in 1917. The gun is a belt-fed autocannons with 56 rounds capacity per belt and a rate of fire of 200 rounds per minute. The gun were usually found in either a single-mounted version on a coastal boat and an early destroyer, as well as a quad mount version found on a British wartime destroyer.
  
 
=== Available ammunition ===
 
=== Available ammunition ===
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+
<!--''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).''-->
 
The '''40 mm 2pdr QF Mk.IIc''' has 3 belt choices, Universal, 40 mm HE, and 40 mm AP
 
The '''40 mm 2pdr QF Mk.IIc''' has 3 belt choices, Universal, 40 mm HE, and 40 mm AP
  
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=== Comparison with analogues ===
 
=== Comparison with analogues ===
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<!--''Give a comparative description of cannons/machine guns that have firepower equal to this weapon.''-->
 
* [[QF Mark V (40 mm)]]: The Bofors autocannons is mostly superior than the Pom-poms in almost every way. The Bofors have a more powerful rounds, higher shell velocity, and features auto-fed mechanism that enable it to fire continuously. While the Pom-pom technically has higher rate of fire than the Bofors (200 vs. 156 rpm), the lack of auto-fed mechanism reduce the actual rate of fire of the Pom-pom to 115 rpm.
 
* [[QF Mark V (40 mm)]]: The Bofors autocannons is mostly superior than the Pom-poms in almost every way. The Bofors have a more powerful rounds, higher shell velocity, and features auto-fed mechanism that enable it to fire continuously. While the Pom-pom technically has higher rate of fire than the Bofors (200 vs. 156 rpm), the lack of auto-fed mechanism reduce the actual rate of fire of the Pom-pom to 115 rpm.
  
 
== Usage in battles ==
 
== 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.''-->
 
The 2pdr Pom-pom performs remarkably well for a gun originated from the Great War era. The gun has superior rate of fire than that of the famous Bofors autocannons, though it is handicapped by the lack of auto-fed mechanism and low shell velocity which reduce the range of the guns to 3 km at best.
 
The 2pdr Pom-pom performs remarkably well for a gun originated from the Great War era. The gun has superior rate of fire than that of the famous Bofors autocannons, though it is handicapped by the lack of auto-fed mechanism and low shell velocity which reduce the range of the guns to 3 km at best.
  
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=== Pros and cons ===
 
=== Pros and cons ===
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<!--''Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.''-->
 
'''Pros:'''
 
'''Pros:'''
  
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'''Cons:'''
 
'''Cons:'''
  
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* Low muzzle velocity limits is effictive range
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* Low muzzle velocity limits is effective range
 
* Lacks autoloading mechanism, have to reload semi-frequently
 
* Lacks autoloading mechanism, have to reload semi-frequently
  

Revision as of 04:58, 30 January 2022

Description

The 2pdr QF Mk.IIc (40 mm) on the HMS Jervis.


The 40 mm 2pdr QF Mk.IIc, nicknamed the "Pom-pom", is a British naval autocannon, used as a primary armament for coastal ships and an anti-aircraft weapon on bluewater ships.

Despite the similar name, this weapon has no relation to the 40 mm QF 2-pounder used on British tanks.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Motor gun boats  Fairmile C (312) · Fairmile C (332) · Fairmile D (601) · MGB-75 · SGB Grey Fox · SGB Grey Goose
Destroyers  HMS Brissenden · HMS Jervis · HMAS Nepal
Tribal-class  HMCS Haida · HMS Eskimo · HMS Mohawk
  Kerch
Light cruisers  HMS Enterprise

General info

The 2pdr "Pom-pom" autocannons is a 40 mm anti-air autocannons that entered the services with the Royal Navy in 1917. The gun is a belt-fed autocannons with 56 rounds capacity per belt and a rate of fire of 200 rounds per minute. The gun were usually found in either a single-mounted version on a coastal boat and an early destroyer, as well as a quad mount version found on a British wartime destroyer.

Available ammunition

The 40 mm 2pdr QF Mk.IIc has 3 belt choices, Universal, 40 mm HE, and 40 mm AP

  • Universal: HEF · AP-T · HEF · AP-T
  • 40 mm HE: HEF · HEF · HEF · AP-T
  • 40 mm AP: AP-T · AP-T · AP-T · HEF
Penetration statistics
Shell Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
AP-T 60 57 50 43 38 34
HEF 3 3 3 3 3 3
Shell details
Ammunition Velocity
(m/s) 		Projectile
Mass (kg) 		Fuse delay
(m) 		Fuse sensitivity
(mm) 		Explosive Mass
(TNT equivalent) (g) 		Ricochet
0% 50% 100%
AP-T 701 0.91 N/A N/A N/A 47° 60° 65°
HEF 701 0.82 0 0.1 71 79° 80° 81°

Comparison with analogues

  • QF Mark V (40 mm): The Bofors autocannons is mostly superior than the Pom-poms in almost every way. The Bofors have a more powerful rounds, higher shell velocity, and features auto-fed mechanism that enable it to fire continuously. While the Pom-pom technically has higher rate of fire than the Bofors (200 vs. 156 rpm), the lack of auto-fed mechanism reduce the actual rate of fire of the Pom-pom to 115 rpm.

Usage in battles

The 2pdr Pom-pom performs remarkably well for a gun originated from the Great War era. The gun has superior rate of fire than that of the famous Bofors autocannons, though it is handicapped by the lack of auto-fed mechanism and low shell velocity which reduce the range of the guns to 3 km at best.

In most parts, the Pom-pom's usage is mostly similar to that of the Bofors with a few distinctive differences. As the gun will never jam due to the belt-fed mechanism, the Pom-pom performs better with a short but rapid burst to quickly dispatch the opponents, but the frequent reload will reduce the gun's effectiveness, especially when the enemy is getting too close. Thus, the Pom-pom will often requires trigger discipline at closer range to accurately hit and destroy the targets before they can attack with bombs or torpedoes.

Pros and cons

Pros:

  • Powerful HE rounds
  • High rate of fire
  • Belt-fed mechanism ensure that the gun will never jams

Cons:

  • Low muzzle velocity limits is effective range
  • Lacks autoloading mechanism, have to reload semi-frequently

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

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

External links


USSR naval cannons
20 mm  ShVAK
25 mm  2M-3
30 mm  AK-230 · 30 mm/54 AK-630 · 30 mm/54 AK-630M · BP "Plamya"
37 mm  37 mm/67 70-K · V-11
45 mm  45 mm/46 21-K · 45 mm/68 21-KM · 45 mm/89 SM-20-ZIF · 45 mm/89 SM-21-ZIF
57 mm  AK-725
75 mm  75 mm/50 Canet patt.1892
76 mm  34-K · 39-K · 76 mm/60 AK-176M · AK-726 · D-56TS · F-34 · Lender AA gun, pattern 1914/15
85 mm  85 mm/52 92-K · 85 mm/54.6 ZIS-C-53 · 90-K
100 mm  100 mm/56 B-34 · 100 mm/70 SM-5-1 · Minizini
102 mm  Pattern 1911
120 mm  120 mm/50 pattern 1905
130 mm  130 mm/55 pattern 1913 · 130 mm/58 SM-2-1 · B-13
152 mm  152 mm/57 B-38
180 mm  180 mm/57 B-1-P · 180 mm/60 B-1-K
305 mm  12-inch/52 pattern 1907 · 305 mm/54 B-50
356 mm  14-inch/52 pattern 1913 (356 mm)
  Foreign:
40 mm  2pdr QF Mk.IIc (Britain) · Skoda (Czechoslovakia)
47 mm  3 pdr QF Hotchkiss (Britain)
76 mm  76 mm/40 Ansaldo mod.1917 (Italy)
88 mm  SK C/30 (Germany)
120 mm  120 mm/50 Mk.4 Bofors M1924 (Sweden) · 120 mm/50 O.T.O. Mod.1933 (Italy)
152 mm  152/53 mm O.T.O. Mod.1929 (Italy)
320 mm  320 mm/44 Ansaldo model 1934 (Italy)

Britain naval cannons
20 mm  20 mm/70 Oerlikon Mk.II · 20 mm/70 Oerlikon Mark V · 20 mm/70 Oerlikon Mark 24
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 · 6pdr QF Mk.V
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 VII · 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
343 mm  13.5 inch/45 Mark 5(H) · 13.5 inch/45 Mark 5(L)
381 mm  15 inch/42 BL Mark I
  Foreign:
20 mm  Rh202 (Germany)
40 mm  Bofors L/60 Mark 2 (USA) · Bofors L/60 Mark 3 (USA)
76 mm  3 inch Mk.33 (USA) · 76 mm/62 OTO-Melara Compact (Italy)

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