Difference between revisions of "SUB-I-II"

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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.'' -->
−
The SUB-I-II has no notable armour. It is dangerous to stand in the open without cover, as the SPAA can be penetrated by any tank or plane. The survivability of this SPAA is very low if any enemy has a direct line of sight on it.
+
The SUB-I-II has no notable armour. It is dangerous to stand in the open without cover, as the SPAA can be penetrated by any tank or plane. The turret is open topped which can allow for weapons of any type to damage the gunner. The survivability of this SPAA is very low if any enemy has a direct line of sight on it.
  
 
'''Armour type:'''
 
'''Armour type:'''
Line 72: Line 72:
  
 
==== Ammunition ====
 
==== Ammunition ====
 +
 
* '''Default:''' {{Annotation|HVAP-T|High-velocity armour-piercing tracer}}{{-}}{{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}
 
* '''Default:''' {{Annotation|HVAP-T|High-velocity armour-piercing tracer}}{{-}}{{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}
 
* '''DM51A1:''' {{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}{{-}}{{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}{{-}}{{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}{{-}}{{Annotation|HVAP-T|High-velocity armour-piercing tracer}}
 
* '''DM51A1:''' {{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}{{-}}{{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}{{-}}{{Annotation|HEFI-T|High-explosive fragmentation incendiary tracer}}{{-}}{{Annotation|HVAP-T|High-velocity armour-piercing tracer}}
Line 122: Line 123:
  
 
* High rate of fire
 
* High rate of fire
 +
* Can destroy most light vehicles and some medium vehicles through weak spots
 +
* Excellent main weapon traverse angles for an APC
 +
* Dual feed system can allow for quick switching of belts if ammunition is not fully expended
 +
* Hull machine gun can be used to destroy unarmored targets, spot enemy vehicles, or knock down foliage
 +
* Low profile hull
 
* Amphibious
 
* Amphibious
−
* Can penetrate some medium tanks from the side
 
  
 
'''Cons:'''
 
'''Cons:'''
  
 
* Low survivability
 
* Low survivability
 +
* Open turret with exposed gunner
 +
* Low ammo count
 +
* Difficulty in damaging heavily armored targets
 
* Slow speed in water
 
* Slow speed in water
−
* Low ammo count
+
* Engine turbine is loud and can give away the vehicle's position
  
 
== History ==
 
== History ==
 
<!-- ''Describe the history of the creation and combat usage of the vehicle 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: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).'' -->
 
<!-- ''Describe the history of the creation and combat usage of the vehicle 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: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).'' -->
  
−
Development of the Type 73 APC started in 1967 as a replacement for the Type 60 APC (chassis of the [[Type 60 ATM]]). Four prototypes were made during the development, two from Mitsubishi (SUB-I-I and SUB-I-II) and two from Komatsu (SUB-II-I and SUB-II-II). The 20 mm Rh202 version got rejected at last.
+
[[wt:en/news/7997-development-sub-i-ii-speed-and-bite-en|'''Devblog''']]
 +
 
 +
Based on the influence of the Vietnam War as well as on the experiences from using the American M113 APC, the Japanese military concluded several drawbacks on their Type 60 APC. Namely, it was deemed that the vehicle had slightly poor mobility, lacked amphibious capabilities and had no NBC protection systems in place. As a result, in 1964 various Japanese companies, including Mitsubishi, began work on addressing some of these drawbacks by conducting tests with experimental platforms. By 1967, the Defense Agency laid out the requirements for a new APC design and contacted several companies to produce different parts of the vehicle.
 +
 
 +
Furthermore, four prototype versions were ordered for testing from Mitsubishi and Komatsu. Both companies had to produce a version with steel armor plating as well as one made from aluminum. While Mitsubishi’s aluminum-based prototype would in the end be selected as the most suitable design and would thus form the basis for the subsequent production version of the Type 73 APC, it was also selected to conduct different tests.
 +
 
 +
Namely, during testing, the SUB-I-II prototype, as it was known, also had a Rheinmetall 20mm turret mounted on its roof to test the feasibility of evolving the Type 73 from a pure APC into an IFV design. However, due to various technical issues and an increased cost, it was decided not to pursue this design choice further. As a result, the Type 73 would end up remaining a pure APC design, without substantial armament fitted to it.
  
 
== Media ==
 
== Media ==
Line 147: Line 161:
 
* ''reference to the series of the vehicles;''
 
* ''reference to the series of the vehicles;''
 
* ''links to approximate analogues of other nations and research trees.'' -->
 
* ''links to approximate analogues of other nations and research trees.'' -->
−
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
+
Vehicles of similar configuration
  
−
* ''reference to the series of the vehicles;''
+
* [[AMX-10P]]
−
* ''links to approximate analogues of other nations and research trees.''
+
* [[Marder A1-]]
 +
* [[XM800T]]
 +
 
 +
Vehicles with similar weapon systems
 +
 
 +
* [[R3 T20 FA-HS]]
 +
* [[U-SH 204 GK]]
 +
* [[Wiesel 1A4]]
 +
* [[Ystervark]]
 +
* [[Type 87 RCV (P)]]
 +
 
 +
Vehicles derived from the Type 73 chassis
 +
 
 +
* [[Type 75 MLRS]]
 +
* [[Type 75 SPH]]
  
 
== External links ==
 
== External links ==
Line 159: Line 187:
 
* [[wt:en/news/7997-development-sub-i-ii-speed-and-bite-en|[Devblog] SUB-I-II: Speed and Bite]]
 
* [[wt:en/news/7997-development-sub-i-ii-speed-and-bite-en|[Devblog] SUB-I-II: Speed and Bite]]
  
 +
{{Manufacturer MHI}}
 
{{Japan anti-aircraft vehicles}}
 
{{Japan anti-aircraft vehicles}}

Latest revision as of 01:05, 26 June 2024

Rank VI | Premium | Golden Eagles
Chinese A-5C Pack
SUB-I-II
jp_sub_i_ii_20mm.png
GarageImage SUB-I-II.jpg
ArtImage SUB-I-II.png
SUB-I-II
Japan flag.png Japan
IV Rank
Battle rating:
AB RB SB
5.3 5.3 5.3
Class:
Research:46 000 Specs-Card-Exp.png
Purchase:155 000 Specs-Card-Lion.png
Show in game

Description

The Mitsubishi SUB-I-II was a prototype for the Type 73 APC meant to replace the smaller Type 60 APC. Going through multiple prototypes, this particular version was tested with a Rh202 (20 mm) as a self-defense and anti-air cannon, though this armament would not see use in the final version.

It was introduced in Update "Apex Predators". The SUB-I-II provides an excellent fire rate with the possibility of an APDS belt in an amphibious yet squishy APC hull only offering up to 20 mm of armour. As such, if positioned correctly against a suitable target, the SUB-I-II can utilize the APDS autocannon to shred their opponent apart.

General info

Survivability and armour

Smoke grenades
Creation of a smoke screen in front of the vehicle
Armourfront / side / back
Hull20 / 12 / 12
Turret20 / 20 / 20
Crew4 people
Visibility88 %

The SUB-I-II has no notable armour. It is dangerous to stand in the open without cover, as the SPAA can be penetrated by any tank or plane. The turret is open topped which can allow for weapons of any type to damage the gunner. The survivability of this SPAA is very low if any enemy has a direct line of sight on it.

Armour type:

  • Aluminium alloy 5083 (hull, gun mount)
  • Cast homogeneous armour (cupola)
Armour Front (Slope angle) Sides Rear Roof
Hull 20 mm (52°) Upper glacis
20 mm (24-60°) Lower glacis 		12.7+5 mm Top
12.7 mm Bottom 		20 mm (7°) 10 mm
5 mm Engine vents
Turret 20 mm (conical) 20 mm (conical) 20 mm
Cupola 10 mm (spherical) Base
15 mm (spherical) Dome 		10 mm (spherical) Base
15 mm (spherical) Dome 		10 mm (spherical) Base
15 mm (spherical) Dome 		15 mm

Notes:

  • Suspension wheels and torsion bars are 10 mm thick, while tracks are 15 mm thick.
  • Belly armour is 10 mm thick.

Mobility

Amphibious
The design allows you to swim and control movement in the water
Speedforward / back
AB65 / 17 km/h
RB and SB60 / 15 km/h
Number of gears8 forward
2 back
Weight13.5 t
Engine power
AB668 hp
RB and SB350 hp
Power-to-weight ratio
AB49.5 hp/t
RB and SB25.9 hp/t

The SUB-I-II has a modest top reverse speed in RB of -12 km/h so bear that in mind when choosing a good spot to shoot from.

Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 65 17 13.5 497 668 36.81 49.48
Realistic 60 15 310 350 22.96 25.93

Modifications and economy

Repair costBasic → Reference
AB2 794 → 3 780 Sl icon.png
RB2 217 → 2 999 Sl icon.png
SB3 429 → 4 639 Sl icon.png
Total cost of modifications40 400 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
Aces630 Ge icon.png
Research Aces440 000 Rp icon.png
Reward for battleAB / RB / SB
110 / 140 / 200 % Sl icon.png
160 / 160 / 160 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Research:
2 000 Rp icon.png
Cost:
3 900 Sl icon.png
130 Ge icon.png
Mods new tank suspension.png
Suspension
Research:
2 300 Rp icon.png
Cost:
4 400 Sl icon.png
150 Ge icon.png
Mods new tank break.png
Brake System
Research:
2 300 Rp icon.png
Cost:
4 400 Sl icon.png
150 Ge icon.png
Mods new tank filter.png
Filters
Research:
3 400 Rp icon.png
Cost:
6 600 Sl icon.png
220 Ge icon.png
Mods new tank transmission.png
Transmission
Research:
2 600 Rp icon.png
Cost:
5 000 Sl icon.png
170 Ge icon.png
Mods new tank engine.png
Engine
Research:
2 600 Rp icon.png
Cost:
5 000 Sl icon.png
170 Ge icon.png
Mods tank tool kit.png
Improved Parts
Research:
2 000 Rp icon.png
Cost:
3 900 Sl icon.png
130 Ge icon.png
Mods extinguisher.png
Improved FPE
Research:
2 300 Rp icon.png
Cost:
4 400 Sl icon.png
150 Ge icon.png
Mods tank reinforcement jp.png
Crew Replenishment
Research:
3 400 Rp icon.png
Cost:
6 600 Sl icon.png
220 Ge icon.png
Mods smoke screen.png
Smoke grenade
Research:
2 600 Rp icon.png
Cost:
5 000 Sl icon.png
170 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
Research:
2 000 Rp icon.png
Cost:
3 900 Sl icon.png
130 Ge icon.png
Mods tank ammo.png
20mm_rh202_AP_ammo_pack
Research:
2 000 Rp icon.png
Cost:
3 900 Sl icon.png
130 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
Research:
2 300 Rp icon.png
Cost:
4 400 Sl icon.png
150 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
Research:
3 400 Rp icon.png
Cost:
6 600 Sl icon.png
220 Ge icon.png
Mods art support.png
Artillery Support
Research:
2 600 Rp icon.png
Cost:
5 000 Sl icon.png
170 Ge icon.png
Mods tank ammo.png
20mm_rh202_APDS_ammo_pack
Research:
2 600 Rp icon.png
Cost:
5 000 Sl icon.png
170 Ge icon.png

Armaments

Main armament

20 mm Rh202 cannon
Ammunition800 rounds
Belt capacity100 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate801 shots/min
Vertical guidance-10° / 80°
Main article: Rh202 (20 mm)
20 mm Rh202 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity (Belt) Fire rate Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 800 (100) 800 -10°/+80° ±180° - 52.8 73.1 88.8 98.2 104.5 10.40 9.20 8.48 8.00
Realistic 35.7 42.0 51.0 56.4 60.0

Ammunition

  • Default: HVAP-T · HEFI-T
  • DM51A1: HEFI-T · HEFI-T · HEFI-T · HVAP-T
  • DM43: HVAP-T · HVAP-T · HVAP-T · HEFI-T
  • DM63: APDS · APDS · APDS · HEFI-T

Penetration statistics
Ammunition Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
HVAP-T 57 52 37 24 15 10
HEFI-T 7 6 5 3 2 2
APDS 66 61 45 31 21 14
Shell details
Ammunition Velocity
(m/s) 		Projectile
mass (kg) 		Fuse delay
(m) 		Fuse sensitivity
(mm) 		Explosive mass
(TNT equivalent) (g) 		Ricochet
0% 50% 100%
HVAP-T 1,100 0.11 - - - 66° 70° 72°
HEFI-T 1,100 0.13 0.1 0.1 11.05 79° 80° 81°
APDS 1,150 0.13 - - - 75° 78° 80°

Ammo racks

Full
ammo 		1st
rack empty 		2nd
rack empty 		3rd
rack empty 		4th
rack empty 		5th
rack empty 		6th
rack empty 		Visual
discrepancy
8 __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __

Machine guns

7.62 mm M1919A4 machine gun
Ammunition1 000 rounds
Belt capacity250 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate500 shots/min
Main article: M1919A4 (7.62 mm)
7.62 mm M1919A4
Mount Capacity (Belt) Fire rate Vertical Horizontal
Hull 1,000 (250) 500 ±10° ±10°

Usage in battles

When hunting for planes, the SUB-I-II should always have some sort of cover to hide behind in case a plane retaliates. When shooting, you should also be mindful of the gun overheating and use all of the rounds in the belt as the SUB-I-II has only 800 rounds at most. If possible, try to remain near a friendly capture point to restock on ammo belts when they run out because the main cannon can shoot at 800 rpm.

Pros and cons

Pros:

  • High rate of fire
  • Can destroy most light vehicles and some medium vehicles through weak spots
  • Excellent main weapon traverse angles for an APC
  • Dual feed system can allow for quick switching of belts if ammunition is not fully expended
  • Hull machine gun can be used to destroy unarmored targets, spot enemy vehicles, or knock down foliage
  • Low profile hull
  • Amphibious

Cons:

  • Low survivability
  • Open turret with exposed gunner
  • Low ammo count
  • Difficulty in damaging heavily armored targets
  • Slow speed in water
  • Engine turbine is loud and can give away the vehicle's position

History

Devblog

Based on the influence of the Vietnam War as well as on the experiences from using the American M113 APC, the Japanese military concluded several drawbacks on their Type 60 APC. Namely, it was deemed that the vehicle had slightly poor mobility, lacked amphibious capabilities and had no NBC protection systems in place. As a result, in 1964 various Japanese companies, including Mitsubishi, began work on addressing some of these drawbacks by conducting tests with experimental platforms. By 1967, the Defense Agency laid out the requirements for a new APC design and contacted several companies to produce different parts of the vehicle.

Furthermore, four prototype versions were ordered for testing from Mitsubishi and Komatsu. Both companies had to produce a version with steel armor plating as well as one made from aluminum. While Mitsubishi’s aluminum-based prototype would in the end be selected as the most suitable design and would thus form the basis for the subsequent production version of the Type 73 APC, it was also selected to conduct different tests.

Namely, during testing, the SUB-I-II prototype, as it was known, also had a Rheinmetall 20mm turret mounted on its roof to test the feasibility of evolving the Type 73 from a pure APC into an IFV design. However, due to various technical issues and an increased cost, it was decided not to pursue this design choice further. As a result, the Type 73 would end up remaining a pure APC design, without substantial armament fitted to it.

Media

Skins

See also

Vehicles of similar configuration

Vehicles with similar weapon systems

Vehicles derived from the Type 73 chassis

External links


Mitsubishi Heavy Industries Ltd. (三菱重工業株式会社)
Ground Vehicles 
APC  Type 60 · SUB-I-II
IFV  Type 89
MCV  Type 16 (P) · Type 16 (FPS) · Type 16
RCV  RCV (P)
SPH  Type 75 · Type 99
SPAAG  Type 87
Main Battle Tanks 
Type 61  ST-A1 · ST-A2 · ST-A3 · Type 61
Type 74  ST-B2 · Type 74 (C) · Type 74 (E) · Type 74 (F) · Type 74 (G)
Type 90  Type 90 · Type 90 (B)
Type 10  TKX (P) · TKX · Type 10
Air Vehicles 
Jet Fighters 
F-86  F-86F-30 ▅* · F-86F-40 ▅* · F-86F-40 JASDF▅*
F-104  F-104J*
F-1  T-2 Early · T-2 · F-1
F-4  F-4EJ Phantom II* · F-4EJ ADTW* · F-4EJ Kai Phantom II*
F-15  F-15J* · F-15J(M)*
Naval Vehicles 
Patrol Boats (PT) 
No. 7 class  PT-8 (PT-808)
No. 11 class  PT-15 (PT-815)
Destroyers (DD) 
Harukaze-class  JDS Harukaze (DD-101)
Ayanami-class  JDS Ayanami (DD-103)
Murasame-class  JDS Murasame (DD-107)
  MHI's shipyards are positioned in Kobe, Nagasaki, and Shimonoseki
  * Licensed Production / Variants
See also  Mitsubishi Aircraft Company (1928-1945) · Mitsubishi Heavy Industries Ltd. (1938-1945) · Mitsubishi Shipbuilding Company (1884-1945)
  North American Aviation · Lockheed · McDonnell Aircraft Corporation

Japan anti-aircraft vehicles
Ke-Ni Derivatives  Ta-Se · So-Ki
Wheeled  Type 94
Tracked  SUB-I-II
Radar SPAAG  Type 87
Missile SPAA  Type 93 · Type 81 (C)
USA  ▅M16 MGMC · ▅M19A1 · ▅M42

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