100 mm/56 B-34 (100 mm)

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.

Vehicles equipped with this weapon

• Yenot
• Rosomacha
• Karl Marx
• Kirov
• Maxim Gorky
• Voroshilov
• Kronshtadt

General info

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Available ammunition

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		100 m	1,000 m	2,000 m	3,000 m	4,000 m	5,000 m
100 mm F-56 HE	HE	24	24	24	24	24	24
100 mm ZS-56 HE	HE-TF	24	24	24	24	24	24
100 mm ZS-56R HE-VT	HE-VT	16	16	16	16	16	16

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (kg)	Ricochet
							0%	50%	100%
100 mm F-56 HE	HE	900	15.8	0	0.1	1.93	79°	80°	81°
100 mm ZS-56 HE	HE-TF	900	15.6	0	0.1	1.93	79°	80°	81°

Proximity-fused shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay	Fuse sensitivity (mm)	Arming distance (m)	Trigger radius (m)	Explosive mass (TNT equivalent) (kg)	Ricochet
									0%	50%	100%
100 mm ZS-56R HE-VT	HE-VT	900	15.9	0	0.1	270	15	1.23	79°	80°	81°

Comparison with analogues

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Usage in battles

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Pros and cons

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Pros:

Cons:

History

This weapon was a result of the unsuccessful trials of the B-14 gun in 1935 and was started by the "Bolshevik" factory in 1936. A prototype gun was made in 1937 for trials, but it was returned to the factory later that same year for changes. Trials restarted in 1938, but the gun was again returned to the factory for additional changes. Trials restarted once more in 1939, but yet again the gun was not accepted. However in 1940, with war looming, the need for heavy AA guns overwhelmed other considerations and mass production was started. By beginning of 1941 some 42 guns had been produced, unfortunately, they were reported as being almost non-functioning. The gun was made from free tube, casing and the breech. The breech was horizontal blade type with pneumatic semi-automatic breech in the B-34 and a spring semi-automatic breech in all other versions. In 1951 "Sfera-50" control system was accepted in service. It could control the guns for targets up to 35,000 yards (32,000 m) and aircraft flying at speeds up to 985 fps (300 mps).

In 1941 an improved version of the gun was made and designated B-34-U, but World War II delayed production of this version until 1946. 213 of this new design were manufactured by 1950. The main difference between B-34 and B-34-U was the replacement of the pneumatic-powered semi-automatic breech with a spring-powered semi-automatic breech, similar to other Russian 10 cm (3.9") weapons. This last modification still didn't fix all of the problems, as there were incidents of rounds falling out from the breech and the fuze setting mechanism was failure-prone.

These defects were finally fixed on the B-34-USM version which was designed in 1948. 114 of these mounts were built between 1949 and 1952. In 1953 these and other mounts were modernized to increase the ROF and fix other defects. This was followed by the final major variant, the B-34-USMA.

Today, this gun is obsolescent and is used only on second-line Russian ships such as the Riga-class frigates and Don-class submarine tenders.

Media

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

See also

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• reference to the article about the variant of the cannon/machine gun;
• references to approximate analogues by other nations and research trees.

External links

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• topic on the official game forum;
• other literature.

USSR naval cannons
20 mm	ShVAK
25 mm	2M-3
30 mm	AK-230 · 30 mm/54 AK-630 · 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
	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)