STB-2

From War Thunder Wiki
(Redirected from STB-1)
Jump to: navigation, search
Rank VI Israel | Premium | Golden Eagles
Merkava Mk.2D Pack
jp_st_b1.png
GarageImage STB-2.jpg
ArtImage STB-2.jpg
STB-2
AB RB SB
8.3 8.3 8.3
Class:
Research:105 000 Specs-Card-Exp.png
Purchase:300 000 Specs-Card-Lion.png
Show in game

Description

The STB-2 is the prototype of the Type 74, which was developed shortly after the introduction of the Type 61. Due to Japan's late entry into post-war tank development, they were behind by one tank generation and had to compare their Type 61s to more advanced tanks such as the T-62s, M60s and Leopard 1s. To keep up with these advancements, Japan sought to upgrade their tanks with the primary goal of incorporating the new standard L7 rifled cannon.

It was introduced in Update 1.65 "Way of the Samurai" along with the initial Japanese Ground Forces tree. Although the STB-2 has considerably more armour than its counterparts, such as the Leopard 1 and early AMX-30s, and has comparable mobility, it is not recommended for use as a front-line tank. Instead, it is best to employ a cautious hit-and-run tactic similar to that used with Leopards. Proper use of the tank's hydropneumatic suspension can improve its depression and, in some cases, aid in survivability. Additionally, the STB-2 is equipped with a laser rangefinder, giving it superior long-range capabilities over other tanks of its rank. This allows it to be highly accurate with low-velocity HESH or quickly acquire target range with APDS.

General info

Survivability and armour

Smoke grenades
Creation of a smoke screen in front of the vehicle
Armourfront / side / back
Hull80 / 40 / 25
Turret100 / 75 / 40
Crew4 people
Visibility96 %
Armour Front Sides Rear Roof
Hull 40-80 mm (64-73°) Front glacis
100 (26°), 80 mm (58-66°)Lower glacis
35-40 mm (44°) Top
40 mm (0-55°) Bottom
25 mm (1-46°) 20 mm
Turret 132 mm (12-66°) Turret front
100-200 mm (1-66°) Gun mantlet
132 mm (1-54°)
75 mm (26-61°) Rear
40 mm (1-64°)
40 mm (36-82°) Turret underside
67 mm Front
20 mm Rear
Cupola 30 mm 30 mm 30 mm 30 mm

Notes:

  • Suspension wheels and tracks are 20 mm thick.
  • Driver's vision port on the front glacis are only 50 mm thick.
  • Hull roof is rated to be 54 mm effective against HE.

Mobility

 
Controlled suspension
It is possible to adjust the ground clearance or more complex suspension positions
Speedforward / back
AB59 / 9 km/h
RB and SB54 / 8 km/h
Number of gears6 forward
1 back
Weight37.8 t
Engine power
AB1 660 hp
RB and SB870 hp
Power-to-weight ratio
AB43.9 hp/t
RB and SB23.0 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 59 9 37.8 1,348 1,660 35.66 43.92
Realistic 54 8 769 870 20.34 23.02

Modifications and economy

Repair costBasic → Reference
AB3 793 → 5 643 Sl icon.png
RB4 187 → 6 230 Sl icon.png
SB5 732 → 8 529 Sl icon.png
Total cost of modifications88 300 Rp icon.png
147 400 Sl icon.png
Talisman cost2 100 Ge icon.png
Crew training86 000 Sl icon.png
Experts300 000 Sl icon.png
Aces1 200 Ge icon.png
Research Aces720 000 Rp icon.png
Reward for battleAB / RB / SB
130 / 190 / 230 % Sl icon.png
196 / 196 / 196 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Research:
4 600 Rp icon.png
Cost:
7 400 Sl icon.png
200 Ge icon.png
Mods new tank suspension.png
Suspension
Research:
4 100 Rp icon.png
Cost:
6 600 Sl icon.png
175 Ge icon.png
Mods new tank break.png
Brake System
Research:
4 100 Rp icon.png
Cost:
6 600 Sl icon.png
175 Ge icon.png
Mods new tank filter.png
Filters
Research:
5 700 Rp icon.png
Cost:
9 200 Sl icon.png
240 Ge icon.png
Mods new tank transmission.png
Transmission
Research:
7 400 Rp icon.png
Cost:
12 000 Sl icon.png
320 Ge icon.png
Mods new tank engine.png
Engine
Research:
7 400 Rp icon.png
Cost:
12 000 Sl icon.png
320 Ge icon.png
Mods tank tool kit.png
Improved Parts
Research:
3 000 Rp icon.png
Cost:
7 400 Sl icon.png
200 Ge icon.png
Mods extinguisher.png
Improved FPE
Research:
2 700 Rp icon.png
Cost:
6 600 Sl icon.png
175 Ge icon.png
Mods tank reinforcement jp.png
Crew Replenishment
Research:
5 700 Rp icon.png
Cost:
9 200 Sl icon.png
240 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
Research:
4 600 Rp icon.png
Cost:
7 400 Sl icon.png
200 Ge icon.png
Mods tank ammo.png
105mm_us_M416_Smoke_ammo_pack
Research:
4 600 Rp icon.png
Cost:
7 400 Sl icon.png
200 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
Research:
4 100 Rp icon.png
Cost:
6 600 Sl icon.png
175 Ge icon.png
Mods night vision device.png
NVD
Research:
4 100 Rp icon.png
Cost:
6 600 Sl icon.png
175 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
Research:
5 700 Rp icon.png
Cost:
9 200 Sl icon.png
240 Ge icon.png
Mods smoke screen.png
Smoke grenade
Research:
5 700 Rp icon.png
Cost:
9 200 Sl icon.png
240 Ge icon.png
Mods art support.png
Artillery Support
Research:
7 400 Rp icon.png
Cost:
12 000 Sl icon.png
320 Ge icon.png
Mods tank laser rangefinder.png
Laser rangefinder
Research:
7 400 Rp icon.png
Cost:
12 000 Sl icon.png
320 Ge icon.png

Armaments

Laser rangefinder
Reduces the error and increases the maximum measurable distance of the rangefinder
Night vision device
Improves visibility by enhancing natural light or active illumination.

Main armament

Two-plane stabilizer
Reduces the swing of the gun in two planes while moving
Ammunition50 rounds
First-order16 rounds
Reloadbasic crew → aces
8.7 → 6.7 s
Vertical guidance-6° / 9°
Main article: L7A3 (105 mm)
105 mm L7A3 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 50 -6°/+9° ±180° Two-plane 22.8 31.6 38.4 42.5 45.2 8.71 7.70 7.10 6.70
Realistic 14.3 16.8 20.4 22.6 24.0

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
M392A2 APDS 350 347 333 317 302 287
Type 75 HESH 127 127 127 127 127 127
Shell details
Ammunition Type of
warhead
Velocity
(m/s)
Projectile
mass (kg)
Fuse delay
(m)
Fuse sensitivity
(mm)
Explosive mass
(TNT equivalent) (kg)
Ricochet
0% 50% 100%
M392A2 APDS 1,478 4 - - - 75° 78° 80°
Type 75 HESH 760 10.8 0.1 4 3.89 73° 77° 80°
Smoke shell characteristics
Ammunition Velocity
(m/s)
Projectile
mass (kg)
Screen radius
(m)
Screen deploy
time (s)
Screen hold
time (s)
Explosive mass
(TNT equivalent) (g)
M416 732 11.6 16 5 25 50

Ammo racks

Ammo racks of the STB-2
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
Visual
discrepancy
50 44 (+6) 16 (+34) 10 (+40) (+49) No

Notes:

  • Hull floor empty: 16 (+34) shells
  • Shells are modeled individually and disappear after having been shot or loaded.
  • Racks 3 and 4 are first stage ammo racks. They total 15 shells and get filled first when loading up the tank.
  • These racks are also emptied early: the rack depletion order at full capacity is: 3 - 4 - 1 - 2.
  • Simply not firing when the gun is loaded will move ammunition from rack 1 then 2 into ready rack 4 then 3. Firing will interrupt the restocking of the ready racks.

Machine guns

Ammunition800 rounds
Belt capacity200 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate575 shots/min
Vertical guidance-10° / 40°
Ammunition4 500 rounds
Belt capacity250 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate500 shots/min
12.7 mm M2HB
Mount Capacity (Belt) Fire rate Vertical Horizontal
Pintle 800 (200) 577 -10°/+40° ±180°
7.62 mm M1919A4
Mount Capacity (Belt) Fire rate Vertical Horizontal
Coaxial 4,500 (250) 500 - -

Usage in battles

The STB-2 can be compared to the Leopard I or even a stock Leopard A1A1, but has its own capabilities in its own right. The STB-2 allows for both a more held down playstyle or aggressive playstyle versus the Leopard I due to its hydropneumatic suspension and two-plane stabilizer. Together with the power of the engine outfitted on the STB-2, allows it to speedily move to a nice sniper spot or hull-down position and fire at targets before they realize a tank could be there.

The STB-2 possesses a pretty nice angled upper front plate, but do keep in mind that the STB-2 wasn't designed to take a punch, only to deal a punch, so even with the good angle you shouldn't rely too heavily on it, as shells can penetrate it and won't always bounce off. Do keep this fully in mind especially when taking more shells with the vehicle, as the fuel tank next to the driver will be filled with extra shells, which can blow up the whole tank if a shell does eventually penetrate.

With the addition of a 12.7 mm machine gun, the STB-2 can make short work of ZSU's or light tanks alike if the heat of the battle doesn't allow for the main gun or in-case of more important targets requiring the main gun's firepower.

With only 2 shells to choose from being APDS & HESH, APDS can be used for long-distance engagements and HESH can deal with light to medium armoured vehicles with overpressure damage, this can be done at a long range once the laser rangefinder has been unlocked as well. But due to the low velocity of the HESH round it has to be fired at a stationary target at long range to effectively hit.

Pros and cons

Pros:

  • 105 mm L7 cannon found on other NATO tanks
  • 12.7 mm Browning M2HB machine gun
  • Two-plane stabilizer that allows it to fire on the move
  • Highly mobile
  • Armour may bounce APHE shells
  • Low profile
  • Utilization of hydropneumatic suspension allows for various offensive and defensive options
  • Laser rangefinder

Cons:

  • Some areas are lightly armoured, vulnerable to high penetrating SPAAs
  • Poor gun elevation angle

History

The prototype for the Type 74. Known in Japanese as 74式戦車の試作車STB-1 (ななよんしきせんしゃのしさくしゃSTB-1). Created in September 1969 along with STB-2 in the STT program. Due to issues with cost effectiveness these two prototypes were not considered for the replacement of the Type 61. In a bid to reduce costs STB-3, STB-4, STB-5 and STB-6 were produced between April 1970 to December 1971. The final judgement for the STT program was held in November 1973 which lead the line to be completed in 1974. And, production started the following year in 1975 for the Type 74.

Media

Skins
Videos

See also

Related Development
  • Type 74 (C) - (Early Production version)
  • Type 74 (E) - (Variant with improved FCS & thermal sleeve)
  • Type 74 (F) - (Variant with mounting plates for a Type 92 mine-roller)
  • Type 74 (G) - (Improved () variant with thermal and armour skirts)
Other vehicles of similar configuration and role

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 10 MBT  TKX (P)* · TKX* · Type 10
Other  Ka-Chi
USA  ▅M4A3 (76) W · ▅M47
  *Prototype