B1 bis
Contents
| This page is about the heavy tank B1 bis. For the pack version, see B1 ter. |
Description
The Char de bataille B1 bis (Battle tank B1 "repeated") is a Rank II French heavy tank
with a battle rating of 2.3 (AB/RB/SB). It was introduced in Update 1.75 "La Résistance". With arguably the best armour at its BR, this tank is a beast in long-range engagements since it is hard to penetrate at distances. While not having the best armament, it should do the job taking care of these dangerous early SPGs and light tanks. The "bis" suffix is a French way of marking an improved version.
General info
Survivability and armour
In order to effectively use this tank's armour, there is a few things to consider. First of all, there a lot of shot traps, the main ones being the turret ring and the hull gun mount, in order to minimize your enemies' chance to hit these weak spots, stay away from them. Second, even if your armour is very strong for the BR, do not completely rely on it by sitting around in an open field: you will eventually get hit where it hurts. The third thing to consider is your small and thick turret: hide that big clumsy hull behind a hill and pop out only your hard "head", take a shot, fall back, reload, repeat. If something goes wrong (i.e. getting shot in the turret ring), there is usually enough men left to take the job left by their dead "camarade". Do not bother getting spotted: it is your job to stay in the enemies' sights while your lighter teammates do what they ought to. In some situations, it can even be used as a breakthrough tank, rely on your own experience to guess when it is time to do so.
When fighting the B1 bis, due to the extremely heavy frontal armor, one should try to use mobility to flank the B1. However, if that isn't possible, you'll want to try and hit the "mailslot" of the turret ring. It may be a tricky shot, but there's only ~40 mm of armor there.
Armour type:
- Rolled homogeneous armour (Hull)
- Cast homogeneous armour (Turret)
| Armour | Front (Slope angle) | Sides | Rear | Roof |
|---|---|---|---|---|
| Hull | 60 mm (7-62°) Front glacis 60 mm (32-48°) Lower glacis |
55 mm Center Mass 55 + 55 mm Border |
50 mm (1-47°) | 25 mm (77-89°) |
| Turret | 56 mm (0-46°) Turret front 56 mm (1-85°) Gun mantlet 56 mm (0-49°) Machine gun cover |
56 mm (2-19°) | 56 mm (18-19°) | 30 mm (62-89°) |
| Armour | Sides | Roof | ||
| Cupola | 48 mm | 30 mm |
Notes:
- Suspension wheels are 15 mm thick while tracks are 20 mm thick.
- Lower turret ring armour 40 mm thick, while upper turret ring armour is 25 mm plus 40 mm thick.
- Belly armour is 20mm thick.
- Gun barrel is 15mm thick.
Mobility
This tank's mobility won't allow you to position fast enough. Taking time is the only way to get where you want safely. Since this tank is pretty long and narrow, do not engage in cramped spaces since you will not be allowed to manoeuvre as you wish. You reverse speed won't allow you to retreat if things get bad around you, stay behind the frontlines, making good use of your armour.
| Mobility characteristic | ||
|---|---|---|
| Weight (tons) | Add-on Armor weight (tons) |
Max speed (km/h) |
| 32.0 | N/A | 29.8 (AB) |
| 28.0 (RB/SB) | ||
| Engine power (horsepower) | ||
| Mode | Stock | Upgraded |
| Arcade | 396 | 488 |
| Realistic/Simulator | 272 | 307 |
| Power-to-weight ratio (hp/ton) | ||
| Mode | Stock | Upgraded |
| Arcade | 12.37 | 15.25 |
| Realistic/Simulator | 8.50 | 9.59 |
Armaments
Main armament
With the same gun as most other Rank 2 French tanks, the B1 bis will never be recognized for having a fearsome armament: penetration rates are even lower than most reserve tanks. The turreted armament is only good at firing light targets such as SPGs and light tanks. Elevation and depression angles are amazing but turret slewing rate is a bit slow: this tank has been designed to be hull-down. As for the hull-mounted gun, it should only be used as a close range defence device, as it has poor penetration rates and high drop. Exposing your hull-mounted gun for long range engagements does not only makes you vulnerable, it is also mostly ineffective.
| 75 mm SA35 L/17 | |||||
|---|---|---|---|---|---|
| Capacity | Vertical guidance |
Horizontal guidance |
Stabilizer | ||
| 74 | -20°/+25° | ±1° | N/A | ||
| Turret rotation speed (°/s) | |||||
| Mode | Stock | Upgraded | Prior + Full crew | Prior + Expert qualif. | Prior + Ace qualif. |
| Arcade | __.__ | __.__ | __.__ | __.__ | __.__ |
| Realistic | __.__ | __.__ | __.__ | __.__ | __.__ |
| Reloading rate (seconds) | |||||
| Stock | Prior + Full crew | Prior + Expert qualif. | Prior + Ace qualif. | ||
| __.__ | __.__ | __.__ | __.__ | ||
Ammunition
| Penetration statistics | |||||||
|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Penetration in mm @ 0° Angle of Attack | |||||
| 10m | 100m | 500m | 1000m | 1500m | 2000m | ||
| Mle1910M | APHE | 57 | 55 | 52 | 47 | 44 | 37 |
| Mle1915 | HE | 11 | 11 | 11 | 11 | 11 | 11 |
| Shell details | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Velocity in m/s |
Projectile Mass in kg |
Fuse delay
in m: |
Fuse sensitivity
in mm: |
Explosive Mass in g (TNT equivalent): |
Normalization At 30° from horizontal: |
Ricochet: | ||
| 0% | 50% | 100% | ||||||||
| Mle1910M | APHE | 500 | 6.4 | 1.2 | 25 | 90 | ° | 43° | 30° | 25° |
| Mle1915 | HE | 500 | 5.6 | 0.4 | 0.1 | 740 | +0° | 11° | 10° | 9° |
Ammo racks
| Full ammo |
1st rack empty |
2nd rack empty |
3rd rack empty |
4th rack empty |
5th rack empty |
6th rack empty |
7th rack empty |
8th rack empty |
9th rack empty |
10th rack empty |
11th rack empty |
12th rack empty |
13th rack empty |
14th rack empty |
15th rack empty |
Visual discrepancy |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 74 | 68 (+6) | 64 (+10) | 62 (+12) | 60 (+14) | 56 (+18) | 53 (+21) | 38 (+36) | 36 (+38) | 25 (+49) | 23 (+51) | 21 (+53) | 14 (+60) | 9 (+65) | 3 (+71) | 1 (+73) | no |
Additional armament
| 47 mm SA35 L/32 | |||||
|---|---|---|---|---|---|
| Capacity | Vertical guidance |
Horizontal guidance |
Stabilizer | ||
| 50 | ±18° | ±180° | Vertical | ||
| Turret rotation speed (°/s) | |||||
| Mode | Stock | Upgraded | Prior + Full crew | Prior + Expert qualif. | Prior + Ace qualif. |
| Arcade | 8.09 | 11.20 | 13.6 | 15.04 | 16.00 |
| Realistic | 4.5 | 4.5 | |||
| Reloading rate (seconds) | |||||
| Stock | Prior + Full crew | Prior + Expert Qualif. | Prior + Ace Qualif. | ||
| 9.75 | 8.62 | 7.95 | 7.5 | ||
Ammunition
| Penetration statistics | |||||||
|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Penetration in mm @ 0° Angle of Attack | |||||
| 10m | 100m | 500m | 1000m | 1500m | 2000m | ||
| Mle1935 | APC | 69 | 67 | 57 | 48 | 27 | 24 |
| Mle1935 HE | HE | 4 | 4 | 4 | 4 | 4 | 4 |
| Shell details | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ammunition | Type of warhead |
Velocity in m/s |
Projectile Mass in kg |
Fuse delay
in m: |
Fuse sensitivity
in mm: |
Explosive Mass in g (TNT equivalent): |
Normalization At 30° from horizontal: |
Ricochet: | ||
| 0% | 50% | 100% | ||||||||
| Mle1935 | APC | 660 | 1.6 | N/A | N/A | N/A | ° | 48° | 63° | 71° |
| Mle1935 HE | HE | 590 | 1.4 | 0.4 | 0.1 | 143 | +0° | 79° | 80° | 81° |
Ammo racks
| Full ammo |
1st rack empty |
2nd rack empty |
3rd rack empty |
4th rack empty |
5th rack empty |
6th rack empty |
7th rack empty |
Visual discrepancy |
|---|---|---|---|---|---|---|---|---|
| 50 | 39 (+11) | 27 (+23) | 25 (+25) | 23 (+27) | 21 (+29) | 11 (+39) | 1 (+49) | No |
Machine guns
| 7.5 mm MAC 31 | ||||||
|---|---|---|---|---|---|---|
| Coaxial mount | ||||||
| Capacity (Belt capacity) | Fire rate (shots/minute) |
Vertical guidance |
Horizontal guidance | |||
| 5,100 (150) | 1,350 | N/A | N/A | |||
Usage in battles
The Char B1, upon playing it for the first time will be slow in both acceleration, max speed and turret rotation speed. the Hull gun is most likely the most frustrating gun to aim because of the limited firing arc it has. The best way to play the B1 bis is to hold down a position, preferably hull down (as its turret is thick and small, it will ricochet most shots it will take). Playing the B1 bis rightly, there is only 3 ways to get killed:
- Being outflanked by a light tank
- The enemy has been lucky enough to get a shot through a shot trap
- Meeting a dangerous gun (see Specific enemies worth noting)
Pros and cons
Pros:
- Overall good armour
- Very heavy frontal armor for its rank.
- Strong turret from the front
- Good at sidescraping (thick sides)
- Nearly impenetrable hull when angled
- Armour is quite thick and curvy at the driver's port area
- Decent firepower
- One of the best in-game depression (-18°, turret gun)
- Has 2 main armaments
- A rare feature on French tanks: it has APHE ammunition.
- MAC 31 coaxial MG
- Turret gun has LOCK, which makes stop-and-shoot tactics effective.
Cons:
- Armour has many shot traps, easing the task of killing it
- Fuel tank behind the grille lights up very often when penetrated.
- Large turret ring is weak (25-40 mm poorly sloped)
- Hull gun mount is a weak spot and can be penetrated by most guns of the tier.
- Crew is cramped
- Turret rear is only 38 mm thick
- Has a tall and "thin" cupola
- Literally has an hallway full of ammo in the back
- Guns feel lacking
- Lacking penetration from both of its guns
- Abysmal traverse on 75 mm gun (~1° left to right)
- Slow reload on the 75mm
- Only stock ammo choices
- APHE shell won't detonate when shooting at light targets (25 mm or less armour)
- Hull gun is hard to master (not beginner-friendly)
- Mobility is subpar
- Not very mobile due to weight.
- Slow hull turning rate
- Reverse speed is low (-3km/h)
History
Intended originally as a heavy infantry-support tank, the first prototype of the Char B dates back to January, 1929. Testing and altered design requirements led to the Char B1, which entered army service in late 1935. In total 35 of this earlier model had been built, but by the onset of war had been replaced in service. The successor B1 bis had heavier armor, a bigger engine, and a more powerful gun in a new turret (same as the Somua S35). Sophisticated and powerful for its time, it suffered from the one-man turret, poor communications, slow speed, a small operational radius, and difficulties in achieving mass production. The driver aimed and fired the bow-mounted howitzer and MG, which due to a lack of lateral traverse, had to be aimed by turning the tank. The complex steering system that enabled this, through a hydrostatically controlled auxiliary differential, proved particularly prone to breakdowns.
In May 1940, 243 B1 bis were deployed in combat units, out of 368 built. They formed the main striking force of France's four armoured divisions, with two battalions in each division, as well as five other independent tank companies (10 tanks per company).
In the 1940 Battle for France, only the German 88 mm guns could reliably defeat the B1 bis. Most were lost due to breakdown or fuel shortage.
161 B1 bis were captured by Germany, who replaced the 75mm with a flamethrower in 60 of them, which served in France, Holland (including at Arnhem), the Balkans and Crimea. Another 16 were converted to self-propelled 105mm howitzers. The Free French 13th Dragoons employed a squadron of 17 recaptured B1 bis in combat in 1945.
Media
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 vehicles;
- 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 tank;
- other literature.
| France heavy tanks | |
|---|---|
| B1 | B1 bis · B1 ter |
| 2C | 2C · 2C bis |
| ARL-44 | ARL-44 (ACL-1) |
| AMX-50 | Somua SM · AMX-50 Surbaissé · AMX-50 Surblindé |
| USA | ▄M4A3E2 |
