2pdr QF Mk.IIc (40 mm)

Description

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

General info

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Available ammunition

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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	Type of warhead	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

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Usage in battles

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Pros and cons

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Cons:

History

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Media

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See also

• 2pdr QF Mk.VIII (40 mm) - Later variant of the weapon.
• 40 mm/39 Vickers-Terni mod.1915/1917 (40 mm) · 40 mm/39 Vickers-Terni mod.1915/1917, Modif.1930 (40 mm) - Italian licensed versions of the weapon

External links

• [NavWeaps] 2-pdr [4 cm/39 (1.575")] QF Mark II, Mark II* and Mark II*C (Web Archive)

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)