Difference between revisions of "Ka-Chi"

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<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
 
<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
 
The '''{{Specs|name}}''' is a premium gift rank {{Specs|rank}} Japanese medium tank {{Battle-rating}}. It was introduced during [[Update "Red Skies"]] as a reward for the [[wt:en/news/7267-event-summer-landing-en|2021 Summer Landing event]].
 
The '''{{Specs|name}}''' is a premium gift rank {{Specs|rank}} Japanese medium tank {{Battle-rating}}. It was introduced during [[Update "Red Skies"]] as a reward for the [[wt:en/news/7267-event-summer-landing-en|2021 Summer Landing event]].
 +
 +
This vehicle might seem familiar to some Japanese players as this is essentially a waterborne [[Chi-He]], boasting the same turret, max armour of 50 mm, and the same engine.
  
 
== General info ==
 
== General info ==
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{{Specs-Tank-Armour}}
 
{{Specs-Tank-Armour}}
 
<!-- ''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.'' -->
 
<!-- ''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.'' -->
−
''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.''
+
At a first glimpse, the armour might look unappealing and weak sides but if one takes a literal dive in the armour profile it will become apparent that the tank isn't built like a conventional tank but as a submarine. It has a {{Annotation|light hull|The outer non-watertight hull which provides a hydrodynamically efficient shape}} and a {{Annotation|pressure hull|The inner hull of a submarine that maintains structural integrity with the difference between outside and inside pressure at depth.}} which both are 10 mm with air in-between, which can protect the tank from depths up to 100 m and tank cannons alike, even withstanding low-end HEAT rounds.
 +
 
 +
The frontal armour of the Ka-Chi will look very similar to that of the Chi-He maxing out at 50 mm, which with installed pontoons will become even better with spaced armour to boot, defeating most HEAT & HE rounds, and stopping most AP shells as it loses most velocity before it reaches the frontal hull.
 +
 
 +
The unconventional armour profile of this tank including the plenty of spaced-out crew makes for a very survivable landship of a tank and shouldn't be messed around with.  
  
 
'''Armour type:''' <!-- The types of armour present on the vehicle and their general locations -->
 
'''Armour type:''' <!-- The types of armour present on the vehicle and their general locations -->
 
<!-- Example: * Rolled homogeneous armour (Front, Side, Rear, Hull roof)
 
<!-- Example: * Rolled homogeneous armour (Front, Side, Rear, Hull roof)
 
* Cast homogeneous armour (Turret, Transmission area) -->
 
* Cast homogeneous armour (Turret, Transmission area) -->
 +
* Rolled homogeneous armour
  
 
{| class="wikitable"
 
{| class="wikitable"
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! Armour !! Front (Slope angle) !! Sides !! Rear !! Roof
 
! Armour !! Front (Slope angle) !! Sides !! Rear !! Roof
 
|-
 
|-
−
| Hull || ___ mm || ___ mm ''Top'' <br> ___ mm ''Bottom'' || ___ mm || ___ - ___ mm
+
| Hull || 50 mm (17°) ''Front plate'' <br> 10 mm (85°) ''Front glacis'' <br> 50 mm (9°) ''Joint plate'' <br> 25 mm (54°) ''Lower glacis'' || 10 + 10 mm || 10 mm <br> 20 mm ''Bulkhead'' || 10 mm
 
|-
 
|-
−
| Turret || ___ - ___ mm ''Turret front'' <br> ___ mm ''Gun mantlet'' || ___ - ___ mm || ___ - ___ mm || ___ - ___ mm
+
| Turret || 25 + 25 mm (10°) ''Turret front'' <br> 50 mm (0-10°) ''Gun mantlet'' || 25 mm (10°) || 25 mm ''Turret rear'' <br> 50 mm (0-57°) ''Machine gun port'' || 12 mm
 
|-
 
|-
 +
<!--
 
| Cupola || ___ mm || ___ mm || ___ mm || ___ mm
 
| Cupola || ___ mm || ___ mm || ___ mm || ___ mm
−
|-
+
|- -->
 
|}
 
|}
  
 
'''Notes:''' <!-- Any additional notes which the user needs to be aware of -->
 
'''Notes:''' <!-- Any additional notes which the user needs to be aware of -->
−
<!-- Example: * Suspension wheels are 20 mm thick, tracks are 30 mm thick, and torsion bars are 60 mm thick. -->
+
* Tracks and suspension wheels are 20 mm thick.
 +
* Front of turret has bolted on 25 mm armor to total up to 50 mm thick as the rest of the front.
 +
* The hull is built like a submarine, having an outer light hull and a pressure hull both 10 mm thick.  
  
 
=== Mobility ===
 
=== Mobility ===
Line 38: Line 48:
  
 
{{tankMobility|abMinHp=372|rbMinHp=212}}
 
{{tankMobility|abMinHp=372|rbMinHp=212}}
 +
 +
While this tank might share the same engine as the Chi-He, it still is larger and heavier, resulting in less power to weight ratio and worse acceleration. with the big and bulky profile, it still can keep up with the slower medium and heavy tanks of its BR. climbing hills and getting around corners will be slightly tougher than the average tank especially with pontoons installed.
  
 
=== Modifications and economy ===
 
=== Modifications and economy ===
Line 48: Line 60:
 
<!-- ''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.'' -->
 
<!-- ''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.'' -->
 
{{main|Type 1 (47 mm)}}
 
{{main|Type 1 (47 mm)}}
 +
 +
Comparatively to other light/medium tanks at this battle-rating, the 47 mm Type 1 gun is quite surprising with 77 mm of penetration at point-blank range and has a good reload speed. Plus, this fires APHE shells, which do great post-penetration damage. Comparatively, the 20-K (45 mm) gun on Russian BR 1.0-2.7 tanks has only 62 mm of penetration in similar conditions.
  
 
{| class="wikitable" style="text-align:center" width="100%"
 
{| class="wikitable" style="text-align:center" width="100%"
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<!-- ''Offensive and anti-aircraft machine guns not only allow you to fight some aircraft but also are effective against lightly armoured vehicles. Evaluate machine guns and give recommendations on its use.'' -->
 
<!-- ''Offensive and anti-aircraft machine guns not only allow you to fight some aircraft but also are effective against lightly armoured vehicles. Evaluate machine guns and give recommendations on its use.'' -->
 
{{main|Type 97 (7.7 mm)}}
 
{{main|Type 97 (7.7 mm)}}
 +
 +
The only usable machine gun mounted in the Ka-Chi is the hull machine gun which, once pontoons are installed, is disabled. Only once the hull is uninstalled it can be utilized to very limited extents, as it has a limited arc of firing, small clip size and only fires rifle calibre bullets, just good enough to deal with trucks and exposed crews.
 +
 +
It is discouraged to pull off the pontoons just for the machine gun.
  
 
{| class="wikitable" style="text-align:center" width="50%"
 
{| class="wikitable" style="text-align:center" width="50%"
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'''Pros:'''
 
'''Pros:'''
−
 
+
* Relatively strong frontal armour at 50 mm
−
* Add-on pontoons provide effective protection against HE and HEAT fired at the hull
+
* Very capable 47 mm Type 1 cannon
 +
** Cannon is shoulder stabilized being stable up to 12 km/h and slightly jittering off-target beyond said speed.
 +
* Submarine like side hull construction works as spaced armour, defeating low end HEAT and HE
 +
* large spacious crew, with 7 crew members being very survivable
 +
* Once pontoons are installed:
 +
** Counts as additional spaced armour for the front and back armour
 +
** Gets a large commander cupola on the turret which doesn't connect to the turret as the hatch is closed, resulting in a fake weak spot
 +
* Amphibious regardless of pontoons, those are for making the tank more seaworthy
  
 
'''Cons:'''
 
'''Cons:'''
  
−
* Large and lightly armoured, likely a juicy target for enemy tanks and planes
+
* Very large target
 +
* Overall thin armour on side and back only going up to 20 mm
 +
* Once pontoons are installed:
 +
** Even larger target than before, becoming the largest tank in the game in both length and height
 +
** -3° to maximum inclination
 +
** 2300 kg additional weight resulting in worse mobility
  
 
== History ==
 
== History ==

Revision as of 19:24, 13 August 2021

RANK 6 BRITAIN
Rooikat 105 PACK
Ka-Chi
jp_type_3_ka_chi.png
GarageImage Ka-Chi.jpg
Ka-Chi
Japan flag.png Japan
I Rank
Battle rating:
AB RB SB
2.0 2.0 2.0
Class:
PREMIUM
Purchase:Bundle or Gift
Show in game

Description

The Type 3 Ka-Chi is a premium gift rank I Japanese medium tank with a battle rating of 2.0 (AB/RB/SB). It was introduced during Update "Red Skies" as a reward for the 2021 Summer Landing event.

This vehicle might seem familiar to some Japanese players as this is essentially a waterborne Chi-He, boasting the same turret, max armour of 50 mm, and the same engine.

General info

Survivability and armour

Armourfront / side / back
Hull50 / 10 / 20
Turret50 / 25 / 25
Crew7 people
Visibility395 %

At a first glimpse, the armour might look unappealing and weak sides but if one takes a literal dive in the armour profile it will become apparent that the tank isn't built like a conventional tank but as a submarine. It has a light hull and a pressure hull which both are 10 mm with air in-between, which can protect the tank from depths up to 100 m and tank cannons alike, even withstanding low-end HEAT rounds.

The frontal armour of the Ka-Chi will look very similar to that of the Chi-He maxing out at 50 mm, which with installed pontoons will become even better with spaced armour to boot, defeating most HEAT & HE rounds, and stopping most AP shells as it loses most velocity before it reaches the frontal hull.

The unconventional armour profile of this tank including the plenty of spaced-out crew makes for a very survivable landship of a tank and shouldn't be messed around with.

Armour type:

  • Rolled homogeneous armour
Armour Front (Slope angle) Sides Rear Roof
Hull 50 mm (17°) Front plate
10 mm (85°) Front glacis
50 mm (9°) Joint plate
25 mm (54°) Lower glacis 		10 + 10 mm 10 mm
20 mm Bulkhead 		10 mm
Turret 25 + 25 mm (10°) Turret front
50 mm (0-10°) Gun mantlet 		25 mm (10°) 25 mm Turret rear
50 mm (0-57°) Machine gun port 		12 mm

Notes:

  • Tracks and suspension wheels are 20 mm thick.
  • Front of turret has bolted on 25 mm armor to total up to 50 mm thick as the rest of the front.
  • The hull is built like a submarine, having an outer light hull and a pressure hull both 10 mm thick.

Mobility

Amphibious
The design allows you to swim and control movement in the water
Speedforward / back
AB39 / 11 km/h
RB and SB35 / 10 km/h
Number of gears5 forward
2 back
Weight26.5 t
Engine power
AB458 hp
RB and SB240 hp
Power-to-weight ratio
AB17.3 hp/t
RB and SB9.1 hp/t
Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 39 11 26.5 372 458 14.04 17.28
Realistic 35 10 212 240 8 9.06

While this tank might share the same engine as the Chi-He, it still is larger and heavier, resulting in less power to weight ratio and worse acceleration. with the big and bulky profile, it still can keep up with the slower medium and heavy tanks of its BR. climbing hills and getting around corners will be slightly tougher than the average tank especially with pontoons installed.

Modifications and economy

Repair cost
AB638 Sl icon.png
RB200 Sl icon.png
SB180 Sl icon.png
Crew training450 Sl icon.png
Experts3 000 Sl icon.png
Aces45 Ge icon.png
Research Aces220 000 Rp icon.png
Reward for battleAB / RB / SB
Talisman.png 2 × 20 / 20 / 20 % Sl icon.png
Talisman.png 2 × 100 / 100 / 100 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Mods new tank suspension.png
Suspension
Mods new tank break.png
Brake System
Mods new tank filter.png
Filters
Mods new tank transmission.png
Transmission
Mods new tank engine.png
Engine
Mods tank tool kit.png
Improved Parts
Mods tank additional armor.png
Installation of pontoons
Mods extinguisher.png
Improved FPE
Mods tank reinforcement jp.png
Crew Replenishment
Mods new tank horizontal aiming.png
Horizontal Drive
Mods tank cannon.png
Adjustment of Fire
Mods new tank vertical aiming.png
Elevation Mechanism
Mods art support.png
Artillery Support

Armaments

Setup 1:47 mm Type 1 cannon
7.7 mm Type 97 machine gun
Setup 2:47 mm Type 1 cannon

Main armament

47 mm Type 1 cannon
Shoulder stabilizer
Reduces the swing of the gun in one plane while moving
Ammunition120 rounds
Reloadbasic crew → aces
4.3 → 3.3 s
Vertical guidance-15° / 20°
Main article: Type 1 (47 mm)

Comparatively to other light/medium tanks at this battle-rating, the 47 mm Type 1 gun is quite surprising with 77 mm of penetration at point-blank range and has a good reload speed. Plus, this fires APHE shells, which do great post-penetration damage. Comparatively, the 20-K (45 mm) gun on Russian BR 1.0-2.7 tanks has only 62 mm of penetration in similar conditions.

47 mm Type 1 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 120 -10°/+24° ±180° Shoulder 14.3 19.8 24.0 26.5 28.2 4.29 3.80 3.50 3.30
Realistic 8.9 10.5 12.7 14.1 15.0

Ammunition

Penetration statistics
Ammunition Type of
warhead 		Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Type 1 APHE APHE 77 75 67 58 50 44
Shell details
Ammunition Type of
warhead 		Velocity
(m/s) 		Projectile
Mass (kg) 		Fuse delay
(m) 		Fuse sensitivity
(mm) 		Explosive Mass
(TNT equivalent) (g) 		Ricochet
0% 50% 100%
Type 1 APHE APHE 808 1.49 1.2 9 22.4 47° 60° 65°

Ammo racks

Ammo racks of the Ka-Chi
Full
ammo 		1st
rack empty 		2nd
rack empty 		3rd
rack empty 		4th
rack empty 		Visual
discrepancy
120 115 (+5) 75 (+45) 35 (+85) 1 (+119) No

Notes:

  • Shells are modeled individually in rack n°1 and disappear after having been shot or loaded.
  • As they are modeled by sets of 2, shells from racks 2 to 4 disappear from the rack only after you fire both shells in the set.

Machine guns

7.7 mm Type 97 machine gun (coaxial)
Ammunition4 000 rounds
Belt capacity20 rounds
Reloadbasic crew → aces
3.9 → 3.0 s
Fire rate499 shots/min
Main article: Type 97 (7.7 mm)

The only usable machine gun mounted in the Ka-Chi is the hull machine gun which, once pontoons are installed, is disabled. Only once the hull is uninstalled it can be utilized to very limited extents, as it has a limited arc of firing, small clip size and only fires rifle calibre bullets, just good enough to deal with trucks and exposed crews.

It is discouraged to pull off the pontoons just for the machine gun.

7.7 mm Type 97
Mount Capacity (Belt) Fire rate Vertical Horizontal
Hull 4,000 (20) 499 ±5° ±7°

Usage in battles

Describe the tactics of playing in the vehicle, the features of using vehicles in the 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. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).

Pros and cons

Pros:

  • Relatively strong frontal armour at 50 mm
  • Very capable 47 mm Type 1 cannon
    • Cannon is shoulder stabilized being stable up to 12 km/h and slightly jittering off-target beyond said speed.
  • Submarine like side hull construction works as spaced armour, defeating low end HEAT and HE
  • large spacious crew, with 7 crew members being very survivable
  • Once pontoons are installed:
    • Counts as additional spaced armour for the front and back armour
    • Gets a large commander cupola on the turret which doesn't connect to the turret as the hatch is closed, resulting in a fake weak spot
  • Amphibious regardless of pontoons, those are for making the tank more seaworthy

Cons:

  • Very large target
  • Overall thin armour on side and back only going up to 20 mm
  • Once pontoons are installed:
    • Even larger target than before, becoming the largest tank in the game in both length and height
    • -3° to maximum inclination
    • 2300 kg additional weight resulting in worse mobility

History

With the success of the Navy's Type 2 Special Motorboat Ka-Mi, a more ambitious project for a bigger, more advanced vehicle was forwarded. Called the Type 3 Special Motorboat, it was not only meant as a fully ocean-going boat, but capable of traveling underwater, although as cargo on the back of a submarine. To withstand the depths (reported as deep as 100 m / 330 ft), the primary pressure hull was a cylinder between 2.0 and 2.1 m (6 ft 7 in) in diameter. Most of the machinery was taken from the Type 1 Chi-He medium tank, presumably to save costs. Like the Ka-Mi, removable sea-going fore and aft pontoons were part of the design, however they were not required to be amphibious. Navigation was accomplished by rudders attached to the rear pontoon, but also the vehicle-mounted twin screws could be independently controlled to maintain a level of steering without the rudders. Nineteen units were reportedly built and extensively and successfully tested, but never used in combat.

Media

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

See also

External links


Japan medium tanks
Type 97  Chi-Ha · Chi-Ha Kai · Chi-Ha Kai TD · Chi-Ha Short Gun
Type 1  Chi-He · Chi-He (5th Regiment) · Ho-I
Type 3  Chi-Nu · Chi-Nu II
Type 4  Chi-To · Chi-To Late
Type 5  Chi-Ri II
Type 61 MBT  ST-A1* · ST-A2* · ST-A3* · Type 61
Type 74 MBT  ST-B2* · Type 74 (C) · Type 74 (E) · Type 74 (F) · Type 74 (G)
Type 90 MBT  Type 90 · Type 90 (B) · Type 90B "Fuji"
Type 10 MBT  TKX (P)* · TKX* · Type 10
Other  Ka-Chi
USA  ▅M4A3 (76) W · ▅M47
  *Prototype

Japan premium ground vehicles
Light tanks  Ha-Go Commander · Type 16 (FPS)
Medium tanks  Chi-Ha Short Gun · Chi-He (5th Regiment) · Ka-Chi · Chi-Nu II · Type 74 (G) · Type 90B "Fuji"
Heavy tanks  Ro-Go · ▅Heavy Tank No.6
Tank destroyers  Ho-Ri Prototype · Type 75 MLRS

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