B6N2a Model 12Ko

This page is about the Japanese bomber B6N2a Model 12Ko. For other versions, see B6N (Family).

B6N2a Model 12Ko

B6N2 Model 12

D4Y1

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B6N2a Model 12Ko

B6N2 Model 12

D4Y1

Japan

II Rank

Battle rating:

AB	RB	SB
2.0	2.3	2.3

Class:

Bomber

Naval aircraft

Torpedo bomber

Research:4 600

Purchase:16 000

Show in game

Description

The B6N2a Model 12Ko (officially designated the "Tenzan" (Heavenly Mountain)) is a rank II Japanese bomber with a battle rating of 2.0 (AB) and 2.3 (RB/SB). It was introduced in Update "Starfighters".

The Tenzan 12A is a small-scale modification of the main production Tenzan 12 by switching out the 2 x Type 92 (7.7 mm) LMGs for the German-based Type 2 (13 mm) and Type 1 (7.92 mm) derived from the MG 131 and MG 15 respectively.

General info

Flight performance

The B6N2a Model 12 Ko "Tenzan" in flight

Arrestor gear

Accelerates braking by grabbing the brake cable on the deck of the aircraft carrier

Max speed

at 4 900 m481 km/h

Turn time21 s

Max altitude9 600 m

EngineMitsubishi Kasei 25

TypeRadial

Cooling systemAir

Take-off weight6 t

The B6N2a Model 12 Ko "Tenzan" is a high performance torpedo bomber, capable of not only ground attack but naval attack, and can successfully outmanoeuvre anything it wishes (excluding biplanes). It has a powerful 1,600 hp engine and a supercharger for high altitude base bombing, and it is a highly capable aircraft.

Characteristics	Max Speed (km/h at 4,900 m)		Max altitude (metres)	Turn time (seconds)		Rate of climb (metres/second)		Take-off run (metres)
	AB	RB		AB	RB	AB	RB
Stock	454	441	9600	21.6	22.3	7.9	7.9	270
Upgraded	512	481		20.8	21.0	16.2	11.5

Details

Features
Combat flaps	Take-off flaps	Landing flaps	Air brakes	Arrestor gear
✓	✓	✓	X	✓

Limits
Wings (km/h)	Gear (km/h)	Flaps (km/h)			Max Static G
		Combat	Take-off	Landing	+	-
650	310	368	354	280	~11	~3

Optimal velocities (km/h)
Ailerons	Rudder	Elevators	Radiator
< 300	< 300	< 310	> 300

Cockpit of the B6N2a Model 12Ko

Survivability and armour

Crew3 people

Speed of destruction

Structural650 km/h

Gear310 km/h

The B6N2a Tenzan fires its lower turret at an approaching enemy fighter

• No armour
• Non-self-sealing fuel tanks (3 in each wing)

Modifications and economy

Repair costBasic → Reference

AB620 → 843

RB1 049 → 1 426

SB1 559 → 2 120

Total cost of modifications8 380

9 430

Talisman cost640

Crew training4 500

Experts16 000

Aces180

Research Aces190 000

Reward for battleAB / RB / SB

50 / 100 / 200 %

118 / 118 / 118 %

Modifications

Flight performance	Survivability	Weaponry
Fuselage repair Research: 420 Cost: 470 90 Radiator Research: 420 Cost: 470 90 Compressor Research: 470 Cost: 530 100 Wings repair Research: 420 Cost: 470 90 Engine Research: 420 Cost: 470 90 Engine injection Research: 680 Cost: 770 145	Airframe Research: 470 Cost: 530 100 EFS Research: 420 Cost: 470 90 Cover Research: 680 Cost: 770 145	mg_turret_belt_pack Research: 420 Cost: 470 90 17 3/4 in (mod45) Research: 420 Cost: 470 90 type2_turret_belt_pack Research: 470 Cost: 530 100 Improved torpedo Research: 470 Cost: 530 100 mg15_turret_new_gun Research: 420 Cost: 470 90 12 in (mod30) Research: 420 Cost: 470 90 type2_turret_new_gun Research: 680 Cost: 770 145 14 in (mod35) Research: 680 Cost: 770 145

Go for all of the bomb loads first, as they are very important, next, research suitability and engine mods, prioritize the Engine. Then unlock the turret and belts, finally, unlock wings repair and wings repair.

Armaments

Suspended armament

List of setups (5)

Setup 16 x 60 kg Navy Type 97 Number 6 ground bomb

Setup 22 x 250 kg Navy Type Number 25 Model 2 bomb

Setup 31 x 800 kg Number 80 Mod. 1 bomb

Setup 41 x Type 91 Model 2 torpedo (835 kg)

Setup 51 x Type 91 Model 3 torpedo (850 kg)

The B6N2a Model 12Ko can be outfitted with the following ordnance:

• 6 x 60 kg Navy Type 97 Number 6 bombs (360 kg total)
• 2 x 250 kg Navy Type Number 25 Model 2 bombs (500 kg total)
• 1 x 800 kg Number 80 Mod. 1 bomb (800 kg total)
• 1 x 835 kg Type 91 Model 2 torpedo
• 1 x 850 kg Type 91 Model 3 torpedo

The 800 kg bomb will destroy 1 base, it's a good pick for maps with few ground targets! The 250 kg bombs are great for destroying pillboxes and tanks, but you can only have two of them. Make sure to use a slight dive when bombing and use the bombsight for increased accuracy! The 6 x 60 kg bombs are a great option for this plane. Since they weigh so little, you can be super accurate with these bombs, just aim the crosshair where you want the bomb to drop, and pull up. No need for a bomb sight!!! Use these bombs for light targets such as AAA, Vehicles, Armoured Cars, Artillery, Howitzers, Machine Guns, and Bridges. The torpedoes are not really useful for this plane in air battles, as ships only spawn in pacific maps, and this plane is at too low of a BR to be put in a Pacific Theater battle.

Defensive armament

Turret13 mm Type 2 machine gun

Ammunition750 rounds

Fire rate937 shots/min

Turret7.92 mm Type 1 machine gun

Ammunition300 rounds

Fire rate1000 shots/min

The B6N2a Model 12Ko is defended by:

• 1 x 13 mm Type 2 machine gun, dorsal turret (750 rpg)
• 1 x 7.92 mm Type 1 machine gun, ventral turret (300 rpg)

A Peashooter tries to tackle the B6N2a Model 12Ko

For the 13 mm machine gun, select "Default" belt because it has the most incendiary potential. It's a great turret for its BR. The 7.92 mm gun is a great gun, use the AP-T belt, as it has the most tracers and the most incendiary potential.

Usage in battles

This plane is great for bombing medium tanks, light pillboxes, howitzers, and vehicles. Since it is so fast, it can make multiple trips to the airfield if a resupply of bombs is needed.

For naval maps and naval gamemode it's best advised to bring the torpedo and hit ships in a quick, close, hit and run style torpedo run, the engine allows for high speeds and Japanese torpedoes are among the highest speed resistant torpedoes in-game at the cost of range of only 2 km. It is also a possibility of squading up with friends / other torpedo carrying planes to dispose of the enemy carriers / battleships in a multiple hit torpedo strike.

With the improved back gunner, experienced pilots can shred foes by baiting them in a dogfight, out-turning them and hitting them hard with the powerful 13 mm.

Manual Engine Control

MEC elements
Mixer	Pitch	Radiator			Supercharger	Turbocharger
		Oil	Water	Type
Controllable	Controllable Not auto controlled	Controllable Not auto controlled	Controllable Not auto controlled	Separate	Controllable 2 gears	Not controllable

Pros and cons

Pros:

• B6N for Carrier-based torpedo bomber
  • Bomber spawn
  • 1x Type 91 Aerial Torpedo
    • Torpedo has the highest drop speed in the game at 580 km/h and is one of the most feared torpedoes in Naval Battles
  • 6x Type 97 No.6 Land Bomb (60kg)
    • Gets a bomb rack of 6 x 60 kg bombs which can be used to hit multiple targets
  • 1x No.80 Land Bomb (800kg)
    • Heaviest bomb Japanese Navy can offer
• Common Navy plane construction:
  • Excellent manoeuvrability
• B6N Specific:
  • Great engine power, produces 1550 hp
  • High top speed for a torpedo bomber (481 km/h)
  • Ventral gunner
• Model 12 Specific:
  • Better performing engine compared to Model 11
    • Higher top speed
    • Higher altitude
• Model 12 Ko Specific:
  • 1x tail defensive 13 mm Type 2 machine gun
  • 1x ventral defensive 7.92 mm Type 1 machine gun

Cons:

• B6N for Carrier-based torpedo bomber
  • No offensive armament
  • No airbrakes
  • Relatively Large target
• Common Navy plane construction:
  • Fragile, little armour, and no self-sealing fuel tanks
  • Exposed tail gunner
• B6N Specific:
  • Dead zones directly behind the aircraft, you are better off turn fighting and using your turrets while they struggle to complete the turn

History

An excellent replacement for the Nakajima B5N in the role of on-board torpedo aircraft, the B6N Tenzan entered service very late, after more than two years of testing. Named JILL in the Allied code, this large single-engine plane appeared as a prototype in spring 1941. The first tests revealed serious steering stability problems. Subsequently, there were difficulties in developing the engine and the need to reinforce the landing gear. After 133 units of the first version of the B6N1 were built, the second production model began to be delivered towards the end of 1943. A total of 1,268 units were built.

The B6N2 is the main production model of the B6N series thanks to a more readily available Mitsubishi Kansei engine, instead of a in-house Nakajima Mamori engine trialed on the B6N1.

The B6N2 has seen alot of use in the southern pacific land bases and few remaining carrier groups. Due to lack of experienced pilots and growing allied air power, the B6N couldn't accomplish the same / better feats the B5N has done in its prior years of the war and damage to the enemy fleet were low and overall performance was average.

The B6N2a Model 12Ko is a armament refit of the B6N2 Model 12 where a 7.7 mm Navy Type 92 was replaced with a 13 mm Navy Type 2.

Media

Skins

• Skins and camouflages for the B6N2a Model 12Ko from live.warthunder.com.

Images

• 

  The Tenzan using its superior defensive turrets to successfully down an enemy aircraft

• 

  The Tenzan in Japan

See also

Related Development

• B5N - (predecessor)
• B6N1 mod. 11 - (base model)
• B6N2 mod. 12 - (main production model)
• B6N2a mod. 12A - (revised tail armament)

Similar aircraft of comparable role, configuration and era

• B5N2
• TBD-1
• TBF-1C

External links

• Official data sheet - more details about the performance

Japan bombers
Navy
Carrier-based attack bomber
B5N	B5N2
B6N	B6N1 · B6N2 · B6N2a
B7A	B7A2 · B7A2 (Homare 23)
Carrier-based dive bomber
D3A	D3A1
D4Y	D4Y1 · D4Y2 · D4Y3 Ko
Shipboard Observation seaplane
F1M	F1M2
Land-based Attack bomber
G4M	G4M1
G5N	G5N1
G8N	G8N1
Flying boat
H6K	H6K4
H8K	H8K2 · H8K3
Land-based Bomber
P1Y	P1Y1
Army
Light	Ki-32
	Ki-48-II otsu
Heavy	Ki-21-Ia · Ki-21-I hei
	Ki-49-I · Ki-49-IIa · Ki-49-IIb · Ki-49-IIb/L
	Ki-67-I Ko · Ki-67-I otsu
Other countries	▅B-17E