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General characteristics
9 peopleCrew
12.1 tEmpty weight
23.0 tTake-off weight
Flight characteristics
9 560 mCeiling
sec528 730.0/528 730.0/22.6Turn Time
174 km/hStalling speed
4 х Mitsubishi Kinsei 43Engine
airCooling system
Speed of destruction
437 km/hStructural
450 km/hGear
Defensive armament
20 mm Type 99 Model 1 cannonTurret
432 roundsAmmunition
517 shots/minFire rate
7.7 mm Type 92 machine gun4 х Turret
582 roundsAmmunition
600 shots/minFire rate
Suspended armament
12 х 60 kg Navy Type 97 Number 6 ground bombSetup 1
2 х 250 kg Navy Type Number 25 Model 2 bombSetup 2
2 х 250 kg Navy Type 98 Number 25 bombSetup 3
2 х 500 kg Navy Type Number 50 Model 2 bombSetup 4
2 х 800 kg Navy Type Number 80 Model 1 bombSetup 5
2 х 800 kg Navy Type 99 Number 80 AP bombSetup 6
2 х Type 91 Model 2 torpedo (835 kg)Setup 7
2 х Type 91 Model 3 torpedo (850 kg)Setup 8
5 900 Rp icon.pngResearch
6 300 Sl icon.pngPurchase
Sl icon.png1 230 / 1 555/1 050 / 1 328/550 / 695Repair
1 800 Sl icon.pngCrew training
6 300 Sl icon.pngExperts
80 Ge icon.pngAces
x 1.06 Rp icon.pngReward for battle


GarageImage H6K4.jpg

The H6K4 is a rank I Japanese flying boat/heavy bomber with a battle rating of 2.0 (AB/RB) and 2.3 (SB). It has been in the game since the start of the Open Beta Test prior to Update 1.27.

General info

Flight Performance

Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.

Max Speed
(km/h at 4,100 m)
Max altitude
Turn time
Rate of climb
Take-off run
311 303 9 560 23.3 24.0 5.3 5.3 396
Max Speed
(km/h at 4,100 m)
Max altitude
Turn time
Rate of climb
Take-off run
 ???  ??? 9 560  ??.?  ??.?  ??.?  ??.? 396


Combat flaps Take-off flaps Landing flaps Air brakes Arrestor gear
Wing-break speed
Gear limit
Combat flaps
Max Static G
+ -
437 450 520 ~3 ~2
Optimal velocities
< 240 < 240 < 240 > 341
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
1,500 m 1,050 hp 1,123 hp

Survivability and armour

Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.


Suspended armament

Main article: Suspended armaments

The H6K4 can be outfitted with the following ordnance:

  • 12 x 60 kg Navy Type 97 Number 6 bombs (720 kg total)
  • 2 x 250 kg Navy Type Number 25 Model 2 bombs (500 kg total)
  • 2 x 250 kg Navy Type 98 Number 25 bombs (500 kg total)
  • 2 x 500 kg Navy Type Number 50 Model 2 bombs (1,000 kg total)
  • 2 x 800 kg Navy Type Number 80 Model 1 bombs (1,600 kg total)
  • 2 x 800 kg Navy Type 99 Number 80 AP bombs (1,600 kg total)
  • 2 x Type 91 Mod.2 torpedoes
  • 2 x Type 91 Mod.3 torpedoes

Defensive armament

The H6K4 is defended by:

  • 1 x 20 mm Type 99 Model 1 navy cannon, tail turret (432 rpg)
  • 1 x 7.7 mm Type 92 navy machine gun, nose turret (582 rpg)
  • 1 x 7.7 mm Type 92 navy machine gun, 2 x beam turrets (582 rpg)
  • 1 x 7.7 mm Type 92 navy machine gun, dorsal turret (582 rpg)

Usage in battles

Describe the tactics of playing in an aircraft, the features of using vehicles in a team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view, but instead, give the reader food for thought. Examine the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Manual Engine Control

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


Tier Flight performance Survivability Weaponry
I Fuselage repair Radiator Turret 7 mm 12 in (mod30)
II Compressor Airframe New 7 mm MGs (turret) 17 3/4 in (mod45)
III Wings repair Engine Turret 20 mm Improved torpedo
IV Engine injection Cover New 20 mm cannons (turret) 14 in (mod35)

Pros and cons

Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".




Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).

In-game description

A quad-engined all-metal parasol-wing monoplane flying boat. An experimental version, the Type S, made its first flight on July 14, 1936. The plane was approved by the Imperial Japanese Navy as Type 97 Large Flying Boat in 1937. Mass production began in 1938.

The most common variant was model 22 (H6K4), created in 1940. The first 119 planes were fitted with a air-cooled 14-cylinder twin-row radial Mitsubishi Kinsei 43 engine (1000 hp). Afterwards, the slightly more powerful Kinsei 46 was used. The H6K4 carried more fuel than earlier models, increasing its maximum range to 25 hours, or 6000 kilometers. Its fuselage included waist blisters fitted with machine guns, which required a slightly longer tail section.

The H6K4 was armed with four 7.7mm Type 97 (Lewis) machine guns with 582 rounds apiece and, in the tail turret, one 20mm Type 99-I cannon with 432 rounds. The flying boat could carry twelve 60-kg bombs, four 250-kg bombs, or two 800-kg Type 91 Model 1 torpedoes.

A major weakness of all H6K flying boats was the lack of protective armor for the crew and for the fuel tanks. This was sacrificed for the sake of its extended flight range. When the plane started to suffer losses in combat, designers of later Model 22 planes began to focus on protecting the crew.

The H6K flying boat's first combat action was a raid on Wake Island on December 11, 1941. The plane was widely used in the Pacific theater during the first part of the war. The H6K ran long-range reconnaissance missions, convoy escort duty, submarine searches, bombing missions, and search and rescue operations. When the newer H8K arrived, the H6K began to be used mostly as a transport plane. The plane was in operation until the Japanese surrender in 1945.

127 H6K4s were built, out of a total of 217 H6Ks.


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

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

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the aircraft;
  • other literature.

Japan bombers
Flying boats  H6K4 · H8K2 · H8K3
Naval  D3A1 · B5N2 · B7A2
Dive  D4Y1 · D4Y2 · D4Y3 Ko · P1Y1 mod. 11
Light  Ki-32
Medium  Ki-21-Ia · Ki-21-I hei · G4M1 · Ki-49-I Donryu · Ki-49-IIa Donryu · Ki-49-IIb Donryu · Ki-49-IIb Donryu /Late · Ki-67-I Ko · Ki-67-I otsu
Heavy  G5N1 Shinzan · G8N1 Renzan · ▅B-17E Flying Fortress
Jet  R2Y2 Keiun-Kai V1 · R2Y2 Keiun-Kai V2 · R2Y2 Keiun-Kai V3