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Su-25K Pack
GarageImage G8N1.jpg
ArtImage G8N1.png
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The G8N1, designated as Renzan (連山), was a four-engine heavy bomber designed by Nakajima Aircraft Company for the Imperial Japanese Navy in 1943. It was intended to be a long-range land-based attack plane that could carry a large bomb load and reach speeds of 590 km/h. The first prototype flew in October 1944 and was delivered to the Navy for testing in January 1945. However, the project faced many difficulties due to material shortages, especially aluminium, and Allied air raids. Only four prototypes and three production models were completed before the program was cancelled in June 1945.

It was introduced in Update 1.29. The Renzan is a formidable machine with six powerful 20 mm Type 99 Model 2 Mk 5 cannons to deter enemy planes. It can withstand multiple attacks with its strong defensive armament, high ammo count, and decent armour (for a Japanese aircraft). However, it has a low bomb load of 2,400 kg, making it the least effective heavy bomber in-game for ground attack. The Renzan can still pose a threat in formation or with allies. Unlike other heavy bombers like the Lancaster B Mk I, the Renzan can defend itself without fighter escort, to some extent. Another distinctive feature of the Renzan is its four-engine design. It is one of the few Japanese planes with four engines, along with the G5N1 and the premium B-17E Flying Fortress. This enhances the Renzan's survivability and chances of returning to base.


General info

Flight performance

Max speed
at 7 620 m512 km/h
Turn time24 s
Max altitude11 156 m
Engine4 х Nakajima NK9K-L
Cooling systemAir
Take-off weight32 t
Characteristics Max Speed
(km/h at 7,620 m)
Max altitude
Turn time
Rate of climb
Take-off run
Stock 493 475 11156 25.6 26.3 4.9 4.9 489
Upgraded 534 512 23.7 24.4 9.9 7.2


Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
Wings (km/h) Gear (km/h) Flaps (km/h) Max Static G
Combat Take-off Landing + -
680 330 332 322 270 ~3 ~2
Optimal velocities (km/h)
Ailerons Rudder Elevators Radiator
< 340 < 350 < 410 > 280

Survivability and armour

Crew8 people
Speed of destruction
Structural0 km/h
Gear330 km/h
  • 13 mm Steel plates behind the nose gunner
  • 13 mm Steel plates behind the pilots
  • 13 mm Steel plates behind the dorsal gunner
  • 13 mm Steel plates in front of beam turret gunners
  • 13 mm Steel plate in the tail gunner's seat

Modifications and economy

Repair costBasic → Reference
AB2 062 → 2 624 Sl icon.png
RB6 026 → 7 671 Sl icon.png
SB11 889 → 15 134 Sl icon.png
Total cost of modifications67 600 Rp icon.png
78 000 Sl icon.png
Talisman cost1 400 Ge icon.png
Crew training45 000 Sl icon.png
Experts155 000 Sl icon.png
Aces820 Ge icon.png
Research Aces440 000 Rp icon.png
Reward for battleAB / RB / SB
90 / 170 / 470 % Sl icon.png
160 / 160 / 160 % Rp icon.png
Flight performance Survivability Weaponry
Mods aerodinamic fuse.png
Fuselage repair
3 400 Rp icon.png
3 900 Sl icon.png
140 Ge icon.png
Mods radiator.png
3 400 Rp icon.png
3 900 Sl icon.png
140 Ge icon.png
Mods compressor.png
5 100 Rp icon.png
5 900 Sl icon.png
210 Ge icon.png
Mods aerodinamic wing.png
Wings repair
5 600 Rp icon.png
6 500 Sl icon.png
230 Ge icon.png
Mods new engine.png
5 600 Rp icon.png
6 500 Sl icon.png
230 Ge icon.png
Mods metanol.png
Engine injection
7 300 Rp icon.png
8 400 Sl icon.png
300 Ge icon.png
Mods armor frame.png
5 100 Rp icon.png
5 900 Sl icon.png
210 Ge icon.png
Mods armor cover.png
7 300 Rp icon.png
8 400 Sl icon.png
300 Ge icon.png
Mods ammo.png
3 400 Rp icon.png
3 900 Sl icon.png
140 Ge icon.png
Mod arrow 0.png
Mods pilon bomb.png
14 in (mod35)
3 400 Rp icon.png
3 900 Sl icon.png
140 Ge icon.png
Mods turret gun.png
5 100 Rp icon.png
5 900 Sl icon.png
210 Ge icon.png
Mods ammo.png
5 600 Rp icon.png
6 500 Sl icon.png
230 Ge icon.png
Mod arrow 0.png
Mods turret gun.png
7 300 Rp icon.png
8 400 Sl icon.png
300 Ge icon.png

As with any propeller-driven bomber, speed is not necessarily important. Start off by researching all of the payload and turret modules, as these are more worthwhile than upgrading the aircraft's speed or turn time. Upgrading crew skills such as reload speed and ground repair time are also beneficial. Upgrading the gunners also gives you a massive defensive boost but costs a lot of crew points. Gunner vitality should be number one on the list of crew upgrades. Unlocking the turret belts modules also allows one to fill the turret belts with more armour piercing or high explosive rounds, furthering the G8N1's survivability.


Suspended armament

List of setups (3)
Setup 118 x 60 kg Navy Type 97 Number 6 ground bomb
Setup 28 x 250 kg Navy Type Number 25 Model 2 bomb
Setup 33 x 800 kg Number 80 Mod. 1 bomb

The G8N1 can be outfitted with the following ordnance:

  • 18 x 60 kg Navy Type 97 Number 6 bombs (1,080 kg total)
  • 8 x 250 kg Navy Type Number 25 Model 2 bombs (2,000 kg total)
  • 3 x 800 kg Number 80 Mod. 1 bombs (2,400 kg total)

Defensive armament

2 х Turret2 x 20 mm Type 99 Model 2 Mark 5 cannon
Ammunition600 rounds
Fire rate750 shots/min
Turret2 x 20 mm Type 99 Model 2 Mark 5 cannon
Ammunition400 rounds
Fire rate750 shots/min
Turret2 x 13 mm Type 2 machine gun
Ammunition400 rounds
Fire rate937 shots/min
2 х Turret13 mm Type 2 machine gun
Ammunition300 rounds
Fire rate937 shots/min

One of the distinguishing features of this aircraft is its 20 mm cannons, which are not the standard Type 99, Model 2 ones. They are actually the upgraded Type 99, Model 2, Mark 5 version, which offers a significant improvement over the earlier models. The main difference is that the Mark 5 cannons use a belt-fed ammunition system that enables them to fire longer bursts than the drum-fed ones, which are limited to 100 rounds. The Mark 5 cannons also have a higher fire rate of about 720 RPM, compared to the 500 RPM of the regular Type 99 Model 2 cannons.

The G8N1 is defended by:

  • 2 x 20 mm Type 99 Model 2 cannons, dorsal turret (300 rpg = 600 total)
  • 2 x 20 mm Type 99 Model 2 cannons, ventral turret (200 rpg = 400 total)
  • 2 x 20 mm Type 99 Model 2 cannons, tail turret (300 rpg = 600 total)
  • 2 x 13 mm Type 2 machine guns, nose turret (200 rpg = 400 total)
  • 1 x 13 mm Type 2 machine gun, 2 x beam turrets (300 rpg)

Usage in battles

In all game modes, the G8N1 excels at the traditional heavy bomber role of bombing strategic targets like air bases or factories. Maps like New Guinea and Midway feature enemy airfields. If destroyed, they will net your team an auto-win. Unfortunately, it takes multiple Renzans equipped with the full bomb load to destroy an airfield on the first attack run. Other maps such as Saipan do not have airfields. Instead, an array of carriers serve as the enemy's bases. It is possible to destroy all of the carriers and win the round, but again requires multiple Renzans or multiple landings. If the "14 in (mod35)" module is not researched, most maps the Renzan is placed on feature smaller targets like tanks, pillboxes, or destroyers. These can be dispatched with the other bomb load outs the G8N1 possesses. In Arcade battles, the strategy is exactly the same. One may also consider climbing high or flanking to avoid enemy fighters.

If attacked, the G8N1 can more than easily defend itself. It is recommended to "line up" an enemy aircraft by manoeuvring so that all of your tail turrets are facing it. Then, start firing at distances of around 1 km away. Make sure to lead properly and if the shells aren't hitting watch the tracers and adjust accordingly. Unfortunately, even minor wing damage can result in a so-called "death spin" in which the plane becomes unbalanced and spirals slowly towards the ground. It is nearly impossible to recover from a situation such as this, and it happens in all game modes. Apart from that issue, the Renzan can be more of a fortress than the B-17 "Flying Fortress".

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Not controllable Controllable
Not auto controlled
Not controllable
Not auto controlled
Not auto controlled
Combined Not controllable
1 gear
Auto controlled

Pros and cons


  • Durable airframe clad with several armour plates, able to withstand multiple hits before going down
  • Has two pilots protected by multiple layers of armour, thus pilot snipes are unlikely to be fatal
  • Generally fast and manoeuvrable for its size
  • Heavy defensive armaments in the form of 20 mm autocannons and 13 mm machine guns with almost no blindspots


  • Low ammo count for turrets, make sure to reload after any engagement
  • Low total payload capacity
  • Very hard to land, as the landing gear takes a long time to deploy and retract and is equipped with ineffective brakes
  • Mediocre climb rate


The G8N1 Renzan was designed to fit an earlier Japanese military specification of a long-range land-based attack plane. The earlier attempt, the G5N1 failed. The initial prototype was completed in October of 1944 and delivered to the Imperial Navy for testing. A total of four prototypes were produced before production stopped as a result of the cease in hostilities. The Allies allocated the name "Rita" to the G8N.

Archive of the in-game description

Nakajima G8N1 "Renzan" experimental four-engine, long-range, land-based bomber (Allied reporting name: Rita), Navy 18-Shi specification

An all-metal, seven-seat cantilever monoplane with retractable nose landing gear.

After the creation of the G5N bomber failed, the Nakajima Aircraft Company's designers were forced to radically reconsider their methods for designing heavy multi-engine machines, now that they had some experience.

In late 1942, leaders of the Imperial Japanese Navy issued new requirements for a land-based bomber that would replace the obsolescent G4M in the very near future.

In February 1943, the Nakajima Company was offered to develop such a bomber, after preliminary 18-Shi requirements were issued for a maritime experimental aircraft. An official specification for it was formulated by September of the same year. The specification called for a well-protected machine with powerful defensive armament, which would reach a maximum speed of 592 km/h and have a full bomb capacity of 4,000 kg.

The first prototype of the G8N1 bomber was ready by October 1944, and it got off the ground for the first time on October 23.

The aircraft came to have four Nakajima NK9K-L Homare 24 eighteen-cylinder air-cooled engines with Hitachi 92 turbocompressors, which could produce a maximum takeoff power of 2,000 hp.

The G8N1 bomber had unprecedented power in its defensive armament. The nose turret housed twin 13 mm Type 2 (Rheinmetall-Borsig MG 131) machine guns with 200 rounds each. Each of two fuselage blister gun mounts housed one 13 mm Type 2 machine gun with 300 rounds each. The lower electric turret, capable of 360-degree fire, housed two 20 mm Type 99 Model 1 (Oerlikon FF) cannons with 200 rounds each. The upper electrically driven turret, capable of 360-degree fire, was equipped with two 20 mm Type 99 Model 1 cannons with 300 rounds each. The rear power-driven turret had two 20 mm Type 99 Model 1 cannons with 300 rounds each.

The G8N1 bomber's combat load was carried only internally. Bombs ranging from 60 kg to 2,000 kg, in various combinations, could be suspended in the bomb bay. The standard payload was 2,000 kg within maximum mission flight range. The maximum bomb capacity was 4,000 kg.



See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the aircraft;
  • links to approximate analogues of other nations and research trees.

External links

Nakajima Aircraft Company (中島飛行機株式会社 )
Fighters  Ki-27 otsu · Ki-27 otsu Tachiarai
  Ki-43-I · Ki-43-II · Ki-43-III otsu
  Ki-44-I · Ki-44-I 34 · Ki-44-II otsu · Ki-44-II hei
  Ki-84 ko · Ki-84 otsu · Ki-84 hei
Hydroplanes  A6M2-N*
Interceptors  J1N1 · J5N1
Bombers  B5N2
  B6N1 Model 11 · B6N2 Model 12 · B6N2a Model 12Ko
  G5N1 · G8N1
  Ki-49-I · Ki-49-IIa · Ki-49-IIb · Ki-49-IIb/L
Recon  E8N2
Jet Fighters  Kikka
Captured  ␗Ki-27 otsu · ▃Ki-43-II · ␗Ki-43-III ko · ␗Ki-44-II hei · ␗Ki-84 ko
  *Refit of the Mitsubishi A6M2 mod. 11
See also  Fuji Heavy Industries (1957-2017)

Japan bombers
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
Light  Ki-32
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