B-47 Main Battle Tank

###### *From: Equipment of the Russian Ground Forces*

   The **B-47** (*Rossi:* *Броневайна Образца 47, Bronevayna Obraztsa 47, "Fighting Vehicle Sample 47"*) is a series of Russian main battle tanks introduced in (O.S.) 1854 (454A.C.) in the 1st Great Cryptid war. They are the further development of the B-41 series of tanks, retaining many similar design elements of it's predecessor with an enlargened hull, taller turret and an improved armour scheme considered superior in comparison to it's preceding tank lines in the Russian Ground Forces. The B-47A has been involved with many of the armed conflicts since their introduction in the last half of the 18th century. When it entered service in 1854, it became the first main battle tank in the Russian military to be equipped with an aeroderivative aircraft engine as it's primary propulsion engine.

The B-47 was noted for it's strong and advanced features not seen on the Russian Ground Force's tanks during the 1st Great Cryptid War including thicker armour protection, powerful engines, air conditioning and a 131.1mm main gun with a loader assistance system which allowed the tank to retain a small crew of four without compromising the reload speed of the tank's main gun. These features made the B-47 so difficult to mass produce, significantly more so than any other previous generations of RGF tanks.

## Background

The B-47 was first concieved at MyZ Voldovagonzavod, Vol'dino, Syktyvkar Prefecture in (O.S.) 1852 as a next-generation main battle tank. The design would be incrementally from Leonov V. Chizhnikov's design of the B-41 model. The B-47 would pioneer tank design technology by the OKB in Vol'dino with drastic changes in the original chassis design, a heavier weight and size.

### Armament

#### 2A33 131.1mm/55 Rifled Main Gun

The B-47 is armed with the **2A33 131.1mm/55 main gun**. This gave the Russians the advantage over many main battle tanks of the time in Europa, being one of the most successful tank gun in the arsenal during the 1850s, however their high performance intended for countering heavy armour of contemporary battle tanks such as the Archangel I, Rath and Warrior was limited to only the B-47 due to costs of producing the 2A33 guns and maintenance, when succeeding 2A37 119.7mm and 2A40 127mm guns with superiour ammunition and firepower at a fraction of the costs needed of the 131.1mm guns. The amount of firepower the 2A33 was so immense had would've required two loaders was eliminated by the use of the advanced 6ETs8 assisted loading system, consisting of a dual-basket crane system which provided the main loading mechanism both shell and it's bagged propellant.

## Variants

### Russia / USSR

* **B-47A (Ob'yekt 641)** – ~
	+ **B-47K (Ob'yekt 642)** – The commander's version of the B-47. It uses more sophisticated electronics, using an improved radio system, an antenna base atop the turret and navigational aids. This was designed to be used by unit commanders.
	+ **B-47UD (Ob'yekt 643)** – Infantry support version of the B-47's regular variant. It is designed with a modified turret front and crew compartments to accomodate the fitting of two 74.1mm rifled guns for better engagements against Cryptid hordes, human wave and some insurgent tactics.
		- **~**
			* **~**
				+ **~**

## Specifications (B-41B1)

### Dimensions

* Length: 9.3 meters (without gun length)
	+ 10 meters (with gun length)
* Width: 3.65 meters
* Height: 3.7 meters (with machine gun turret)
	+ 3.1 meters (without machine gun turret)

### Crew

The B-41 is crewed by four crewmembers:

* Driver
* Commander
* Gunner
* Loader / Machine Gunner

### Propulsion and Performance:

* Engine: Minoga AM-P12 liquid-cooled diesel engine with 12 opposed cylinders, 137x152mm bore/stroke, 27L developing 1,111kW at 1,800rpm.
* Power-to-weight Ratio: 16.7kW / t
* Road Speed: 71.3km/h
* Off-road Speed: 31km/h
* Fording Speed: 5km/h
* Transmission: hydraulic 3-speed automatic gearbox transmission
* Ground Pressure: 0.6kgf/cm²
* Suspension: VvZ hydropneumatic
* Fording / Diving Capability: 2.3 meters (unaided)
	+ 5 meters (with deep dive snorkel)
* Crossing Capability: 3.8m trenches
* Maximum Slope Crossing: 35°
* Fuel Capacity: 600 - 900L
* Operational Range: 250km – 400km (with additional fuel tanks)

### Armament:

#### Main Weapon

**2A33 131.1mm/55 Rifled Main Gun:**

* 6ETs8 loader assist mechanism; 10 — 13 second reload, 39 embedded rounds.
* 2E22 STP-1 twin-axis hydraulic gun stabiliser; −8° to +18° vertical guidance.

Ammunition types vary, but is all available for: (see available ammunition)

#### Main Weapon (B-41UD)

**2A28 74.1mm/42.5 F-16 Rifled Main Gun:**

* 3V-22S loader assist mechanism; 7 — 12 second reload, 12 first-rack rounds and 28 embedded rounds.
* Twin-axis hydraulic gun stabiliser; -4o — +16o vertical guidance.

Ammunition types vary, but is all available for: (see available ammunition)

#### Secondary Weapon

**Gryffyn-35 20mm Heavy Machine Gun**

* 800-round magazine, chain-link fed and chambered in 20x125.4mmK rounds.
* Encased in armoured vision / gun turret

**PVKM 7.62mm Machine Gun**

* 2,500-round magazine, fed by 250-round box magazines and chambered in 7.62x63mmK rounds.

### Armour

#### Steel

* High-hardness steel
* Cast steel

#### Soft Steel

* Soft steel
* Duralumin

##### Hull Front

* Hull Front (glacis upper plate front) — 195mm HHS at 40° with 25mm BC
* Hull Front (glacis vision block) — 230mm CSS at 60° with 30mm triplex bulletproof glass
* Hull Front (glacis upper plate cheeks) – 195mm HHS at 45°
* Hull Front (glacis lower plate A) – 80mm HHS at 45° with spaced gap
* Hull Front (glacis lower plate B) — 20mm SS at 60° with spaced gap
* Hull Front (glacis splash shield) — 10.5mm DM at 45°

##### Hull Sides

* Hull Side (side upper plate A) – 60mm HHS at 45° with spaced gap
* Hull Side (side upper plate B) – 10mm SS at 90° with spaced gap
* Hull Side (side plate ribs) – 5mm DM at 45°
* Hull Side (side lower side) – 50mm HHS at 90° with spaced gap
* Hull Body (Uruzuvsivchik appliqué) – 20mm SS at 90°

##### Hull Body

* Hull Body (Uruzuvsivchik appliqué) — 20mm SS

##### Hull Rear

* Hull Rear (rear upper plate) – 50mm HHS at 30°
* Hull Body (Uruzuvsivchik appliqué) – 20mm SS at 30°
* Hull Rear (rear lower plate) – 45mm HHS at 45° with 25mm BC
* Hull Rear (supercharger intakes) – 80mm CSS at 28°
* Hull Rear (supercharger intake shrapnel shield) – 5mm DM at 25°

##### Hull Roof

* Hull Roof — 55mm HHS at 90° vertical
* Hull Roof (hull blowout panels) — 10.5mm DM
* Hull Floor — 45mm CSS with mine protection shape

##### Turret

* Turret (gun mantlet) — 305mm CSS at 50 - 20°
* Turret (turret front) — 284mm CSS at 50 - 20°
* Turret (turret cheeks) — 155mm CSS at 55 - 33°
* Turret (turret side rear) — 100mm CSS at 55 - 40°
* Turret (turret rear) — 55mm CSS at 60 - 45°
* Turret (extension / bustle under) — 20mm DM
* Turret (turret bustle blowout panels) — 10.5mm DM
* Turret (turret roof) — 40mm CSS at 20 - 23°
* Turret (roof vision block / gun turret) — 230mm CSS at 60° with 30mm triplex bulletproof glass
* Turret (roof splash shield) — 10.5mm DM at 45°

#### Armour Attachments

* Spaced Armour Inserts: — 10.5mm SS
* Gill Skirts: — 11.4mm SS

* Rubber Skirts

##### Spaced Armour Covering:

* Turret side-rear
* Turret rear

##### Gill Skirt Covering:

* Hull side front

CBRN; chemical warfare detection and overpressure protection

### Electronics and Processing Systems

The commander's cupola is fitted with:

* PK-4M commander's day sight; 10x magnification sight, fully traversible
* TPKU-1A night vision sight; 7x30 magnification sight

The gunner's battlestation is fitted with:

* TSh1A-18P gunner sight; 7x30 magnification with integrated optic rangefinders
* TPN-1 gunner night sight; 7x30 magnification
* 2E22 STP-1 twin-axis hydraulic gun stabiliser; vertical range −8° to +18°
* 1V200 electromechanical ballistic computer

The driver's seat is fitted with:

* Driver's armoured vision block
* NNP-6 driver's night sight

Turret mounted equipment:

* 10RL889 radio antenna
* 10RL889 psionic amplifier antenna

* L1NG infrared illuminator; used by commander sight, 400 — 500 meter range
* L2N spotlight; used by gunner and driver, 600 — 800 meter range

The turrets sides are mounted with:

* 3D6 90mm smoke discharger tubes (2x6)

There is damage control equipment fitted on the B-47:

* Automated fire suppression system
* Ammudamp wet rack storage

## See Also

* Equipment of the Russian Ground Forces
* Russian Ground Forces

###### Tanks of comparable, role and era

* Rath A7
* Valiant Medium 105