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Tortoise

Icon
UK | TD | Tier IX
Battle Tier
1234567891011
Overview
Mouse over "
Well, the ones further down, of course.
" for more information
3,500,000  Credits Cost
20002000 HP Hit Points
77/7776.88/81 t Weight Limit
Crew
  1. 車長
  2. 炮手
  3. 駕駛
  4. 通訊員
  5. 裝填手
  6. 裝填手
Mobility
650810 hp Engine Power
20/10 km/h Speed Limit
2022 deg/s Traverse
8.4410.54 hp/t Power/Wt Ratio
YesYes Pivot
Armor
273.1/152.4/101.6 mm Hull Armor
Armament







{{#ifeq:ARMOR_PIERCING_CR|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/APCR/HE







{{#ifeq:ARMOR_PIERCING_CR|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/APCR/HE
Shells
280/280/370400/400/515 HP Damage
220/252/47259/326/120 mm Penetration



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10.71 r/m 

Standard Gun

Reload Times
Nominal: 5.6 s
50% Crew: 6.94 s
75% Crew: 6.06 s
100% Crew: 5.37 s
Rammer: 4.83 s
Vents: 5.25 s
Both: 4.73 s
Both and BiA: 4.62 s
Both and Max Crew %: 4.43 s

See Crew, Consumables, or Equipment for more information.



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8.45 r/m 

Standard Gun

Reload Times
Nominal: 7.1 s
50% Crew: 8.8 s
75% Crew: 7.68 s
100% Crew: 6.81 s
Rammer: 6.13 s
Vents: 6.66 s
Both: 5.99 s
Both and BiA: 5.86 s
Both and Max Crew %: 5.62 s

See Crew, Consumables, or Equipment for more information.
Rate of Fire






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2998.8

Standard Gun

Using Shell Type 1 (280 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2998.8
50% Crew: 2422
75% Crew: 2772
100% Crew: 3127.6
100% Crew
Vents: 3197.6
Rammer: 3474.8
Both: 3553.2
Both and BiA: 3631.6
Both and Max Crew %: 3788.4

Advantageous Damage Per Minute
First-shot DPM: 3278.8
50% Crew: 2702
75% Crew: 3052
100% Crew: 3407.6
100% Crew
Rammer: 3754.8
Vents: 3477.6
Both: 3833.2
Both and BiA: 3911.6
Both and Max Crew %: 4068.4

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (280 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2998.8
50% Crew: 2422
75% Crew: 2772
100% Crew: 3127.6
100% Crew
Vents: 3197.6
Rammer: 3474.8
Both: 3553.2
Both and BiA: 3631.6
Both and Max Crew %: 3788.4

Advantageous Damage Per Minute
First-shot DPM: 3278.8
50% Crew: 2702
75% Crew: 3052
100% Crew: 3407.6
100% Crew
Rammer: 3754.8
Vents: 3477.6
Both: 3833.2
Both and BiA: 3911.6
Both and Max Crew %: 4068.4

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (370 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 3962.7
50% Crew: 3200.5
75% Crew: 3663
100% Crew: 4132.9
100% Crew
Vents: 4225.4
Rammer: 4591.7
Both: 4695.3
Both and BiA: 4798.9
Both and Max Crew %: 5006.1

Advantageous Damage Per Minute
First-shot DPM: 4332.7
50% Crew: 3570.5
75% Crew: 4033
100% Crew: 4502.9
100% Crew
Rammer: 4961.7
Vents: 4595.4
Both: 5065.3
Both and BiA: 5168.9
Both and Max Crew %: 5376.1

See here, here, or here for more information.






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3380

Standard Gun

Using Shell Type 1 (400 Damage):


Theoretical Damage Per Minute
Nominal DPM: 3380
50% Crew: 2728
75% Crew: 3124
100% Crew: 3524
100% Crew
Vents: 3604
Rammer: 3916
Both: 4004
Both and BiA: 4092
Both and Max Crew %: 4268

Advantageous Damage Per Minute
First-shot DPM: 3780
50% Crew: 3128
75% Crew: 3524
100% Crew: 3924
100% Crew
Rammer: 4316
Vents: 4004
Both: 4404
Both and BiA: 4492
Both and Max Crew %: 4668

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (400 Damage):


Theoretical Damage Per Minute
Nominal DPM: 3380
50% Crew: 2728
75% Crew: 3124
100% Crew: 3524
100% Crew
Vents: 3604
Rammer: 3916
Both: 4004
Both and BiA: 4092
Both and Max Crew %: 4268

Advantageous Damage Per Minute
First-shot DPM: 3780
50% Crew: 3128
75% Crew: 3524
100% Crew: 3924
100% Crew
Rammer: 4316
Vents: 4004
Both: 4404
Both and BiA: 4492
Both and Max Crew %: 4668

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (515 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 4351.75
50% Crew: 3512.3
75% Crew: 4022.15
100% Crew: 4537.15
100% Crew
Vents: 4640.15
Rammer: 5041.85
Both: 5155.15
Both and BiA: 5268.45
Both and Max Crew %: 5495.05

Advantageous Damage Per Minute
First-shot DPM: 4866.75
50% Crew: 4027.3
75% Crew: 4537.15
100% Crew: 5052.15
100% Crew
Rammer: 5556.85
Vents: 5155.15
Both: 5670.15
Both and BiA: 5783.45
Both and Max Crew %: 6010.05

See here, here, or here for more information.
Damage Per Minute


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0.33 m 

With 50% Crew: 0.409 m
With 75% Crew: 0.357 m
With 100% Crew: 0.316 m
With BiA: 0.309 m
With BiA and Vents: 0.303 m
Maximum possible: 0.29 m

For more details, see Crew


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0.31 m 

With 50% Crew: 0.384 m
With 75% Crew: 0.335 m
With 100% Crew: 0.297 m
With BiA: 0.291 m
With BiA and Vents: 0.284 m
Maximum possible: 0.273 m

For more details, see Crew
Accuracy


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1.7 s 

With 50% Crew: 2.106 s
With 75% Crew: 1.839 s
With 100% Crew: 1.63 s
With GLD: 1.482 s
With BiA: 1.594 s
With BiA and Vents: 1.559 s
With both and GLD: 1.418 s
Maximum possible: 1.359 s

For more details, see Crew or Equipment


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1.7 s 

With 50% Crew: 2.106 s
With 75% Crew: 1.839 s
With 100% Crew: 1.63 s
With GLD: 1.482 s
With BiA: 1.594 s
With BiA and Vents: 1.559 s
With both and GLD: 1.418 s
Maximum possible: 1.359 s

For more details, see Crew or Equipment
Aim time
2022 deg/s Gun Traverse Speed
40° Gun Arc
-10°/+20°-10°/+20° Elevation Arc
6050 rounds Ammo Capacity
General
2020 % Chance of Fire






390 m 

With 50% Crew: 306.4 m
With 75% Crew: 348.2 m
With 100% Crew: 390 m
With Recon and Situational Awareness: 409.7 m
With Coated Optics: 429 m
With Binocular Telescope: 487.5 m
Maximum possible: 558.3 m

For more details, see Skills or Equipment






390 m 

With 50% Crew: 306.4 m
With 75% Crew: 348.2 m
With 100% Crew: 390 m
With Recon and Situational Awareness: 409.7 m
With Coated Optics: 429 m
With Binocular Telescope: 487.5 m
Maximum possible: 558.3 m

For more details, see Skills or Equipment
View Range


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550 m 

With 50% Crew: 444 m
With 75% Crew: 508.5 m
With 100% Crew: 573.6 m
With 100% Signal Boost: 660 m
When affected by 100% Relaying: 605 m
Maximum possible: 825.7 m

For more details, see Skills or Equipment


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750 m 

With 50% Crew: 605.4 m
With 75% Crew: 693.4 m
With 100% Crew: 782.2 m
With 100% Signal Boost: 900 m
When affected by 100% Relaying: 825 m
Maximum possible: 1125.9 m

For more details, see Skills or Equipment
Signal Range
Values are Stock - click for Top

Additional Statistics
(Top Configuration)

IX

annoGB32_Tortoise.png

3500000

The Tortoise is a British tier 9 tank destroyer.

於 1942 年英國開始研發的突擊戰車。在 1944 年二月完成設計,並訂購了 25 輛。然而,直到 1947 年秋季為止僅製造了五輛戰車。

The Tortoise is the heaviest and last of the slow and heavily armored tank destroyers in the British line. It's a bit of a mixed step up from its predecessor, the AT 15, mainly due to its extremely accurate, fast-firing, and powerful 120mm cannon, but relatively weak armor for its tier. The Tortoise has a very large hitpoint pool (more than tier 9 heavy tanks being similar to a tier 10 tank), which it will need because it has the same 228mm thick armor as the AT 15, which while amazing at tier 7 on the AT 15A and good at tier 8, is simply not worth mentioning in tier 9 and 10 matches. Worse yet, the entire right front of the superstructure is only 170mm thick and very poorly sloped. It will not stand up to the high penetration guns you find at tier 9 and tier 10. It's not all bad news though; as of update 8.4, the Tortoise is now the placeholder of the highest damage per minute in game.

The Tortoise leads to the FV217 Badger.

Modules / Available Equipment and Consumables

Modules

炮管

炮管

等級 炮管 平均穿透力 (毫米) 射擊速率 100 公尺處擴散度 瞄準時間 經驗 重量 (噸) 價格,
X 120 mm AT Gun L1A1 259/326/120 400/400/515 8.45 0.31 1.7 60000 2850 320000
VIII OQF 32-pdr AT Gun 220/252/47 280/280/370 10.71 0.33 1.7 0 2972 105000
IX OQF 20-pdr AT Gun Type B Barrel 226/258/42 230/230/280 13.95 0.3 1.5 45000 1282 180000
引擎

引擎

等級 引擎 引擎功率 (匹馬力) 火災發生機率 經驗 重量 (噸) 價格,
VIII Rolls-Royce Meteor Mk. V 650 20 0 744 44000
IX Rolls-Royce Meteor M120 810 20 27000 744 92000
懸吊

懸吊

等級 懸吊 負載限制 迴轉速度 (度/秒) 經驗 重量 (噸) 價格,
VIII Tortoise 77 20 0 20000 32234
IX Tortoise Mk. 2 81 22 21300 20000 63000
通訊設備

通訊設備

等級 通訊設備 通訊範圍 (公尺) 經驗 重量 (噸) 價格,
X SR C42 750 9000 40 54000
VIII WS No. 19 Mk. III 550 0 40 22000
VIII WS No. 22 700 4500 40 25000

Compatible Equipment

Compatible Consumables

Player Opinion

Pros and Cons

Pros:


  • Top gun has the highest DPM in the game as of 8.8 (3380 DPM, 4074 with a Rammer, Vent, BiA, 5% Commander Bonus, and Pudding and Tea)
  • Largest HP pool out of all tier 9 tanks (2000HP)
  • As with the AT 15, traverse and elevation arcs are massive and allow for angling of armor during a fight or "hull down" like tactics
  • Combined thickness of the gun mantlet and main armor comes to a whopping 508mm of armor which is virtually impenetrable.
  • Great accuracy and aim time


Cons:


  • Slow and low maneuverability
  • Large silhouette
  • Vulnerable to artillery and flanking
  • Massive front weak spot on right side of front
  • Loader (located in machine gun turret) often dies



Performance

The A39 Tortoise is surprisingly soft, especially in contrast to previous British TDs such as the AT 15A or AT 15 (which sports the same 228mm frontal armor values but at a lower tier), and the AT 2. It is capable of bouncing shots when angled properly, but overall you can not rely on your armor to save you like in the past. The high penetration guns you will face will mercilessly tear through even your 228mm armor, and even relatively low penetration guns should be avoided as players could potentially be loading premium ammunition that can penetrate your armor. Also, as with the AT 15, the Tortoise sports a large machine gun turret that almost all guns can penetrate, dealing damage and often injuring the loader who resides there.

This soft armor for its tier is compensated for by the very high (for a TD, and even for a heavy tank of the same tier) HP pool and amazing gun. The extreme accuracy, very high penetration, and fast reload of the 120mm ensure you are a constant threat to enemy tanks up close or afar. In close quarters even the relatively slow hull traverse of 22° is more than enough to, for a time, prevent tanks from encircling you when given ample warning thanks to the massively wide traverse angle of the gun. With good aim you can easily track tanks while dealing solid damage, and even keep them tracked if they have not yet trained in repair, or have already used their repair kit. The accuracy and power of the gun means tracking is a very viable option that you should practice frequently (though this is the case with all tanks) to trap tanks in the open for your teammates to focus down. If you can reload quickly enough, keep them tracked and watch as they helplessly melt away at the combined fire of your team.

Overall the playstyle at this point in the Brit TD line changes from assault tank, due to the "weak" armor, to support tank. Though your armor is "thinner", don't be afraid to help lead a charge. Your high rate of fire and good accuracy mean you can easily out-DPM enemy tanks, and with a team backing you up you can easily smash through, and the armor can be good enough to bounce a few frantically aimed shots.


Early Research

From the AT 15 you should have the OQF 20-pdr AT Gun Type B Barrel and can mount it right away. If you have played the heavy tank line prior to this, you may have the engine as well. You can mount the top gun without the suspension upgrade, and this should be your priority as the 20-pdr no longer cuts it against tier 9 and 10 opponents. After that you can get the suspension to allow enough weight limit to mount a full set of equipment, or you can pick up the engine. Like with the tanks before it, the Tortoise has outstanding aim time and does not need to use a valuable slot on a GLD. Your camo is poor, so it's best to use your third equipment slot for improving sight range via optics or perhaps binoculars depending on how aggressively you play.


Suggested Equipment


Tank Gun Rammer Improved VentilationCoated Optics Binocular Telescope Spall Liner Toolbox 


Gallery

Historical Info

A39 Tortoise British super heavy assault gun

The Tank, Heavy Assault, Tortoise (A39) was a British heavy assault tank design developed in World War II but never put into mass production. It was developed for the task of clearing heavily fortified areas and as a result favored armour protection over mobility. Although heavy, at 78 tons, and not readily transported, it was reliable and a good gun platform

Development history

In the early part of 1943 the Allied forces anticipated considerable resistance in the projected future invasion of Europe, with the enemy fighting from heavily fortified positions such as the Siegfried Line. As a result, a new class of vehicles emerged, in the shape of Assault tanks, which placed maximum armour protection at a higher priority than mobility. Initially, work was concentrated on the Excelsior tank (A33), based on the Cromwell tank. There was also a program to upgrade the armour of the Churchill tank. For similar work in the Far East, the Valiant tank (A38), based on the Valentine tank was considered although weight was specified to be as low as possible.

The Secretary of State for War and the Minister of Supply issued a Joint Memorandum in April 1943 which gave a vague specification for an Assault tank, classing it as a special purpose vehicle to operate in heavily defended areas as part of the specialist 79th Armoured Division. The Nuffield Organisation responded with 18 separate designs (AT-1 through AT-18) drafted between May 1943 and February 1944, each design larger and heavier than the last. By February 1944 design AT-16 was complete and was approved by the Tank Board who proposed that month that 25 be produced directly from the mock up stage without bothering with a prototype, to be available for operational service in September 1945. An order for 25 was placed by the War Office and work was begun. Following the end of the war the order was reduced and only 6 vehicles were built. One example was sent to Germany for trials where it was found to be mechanically reliable and a powerful and accurate gun platform, however at a weight of 80 tons and a height of 10 feet (3.0 m) it was extremely slow and proved difficult to transport.

Design features

A39 Tortoise restored into running condition

Since the Tortoise had a fixed casemate superstructure instead of a turret, it can be classified as a self-propelled gun or an assault gun and not a tank. The crew included a commander, driver, and gunner, with two loaders for the 32-pounder gun and two machine gunners. Internally it was split into three compartments, the transmission to the front, the crew in the center and the Rolls-Royce Meteor engine at the rear. The suspension consisted of four bogies on each side each of the hull. Each bogie had two pairs of wheels, with each pair linked to a transverse torsion bar. The Merritt-Brown transmission was fitted with an all speed reverse, giving approximately the same speed backwards as forwards.

The Ordnance QF 32 pounder gun design was adapted from the British 3.7 inch anti-aircraft gun. The ammunition used a separate charge and shell, the latter a 32 pound (14.5 kg) armour piercing shot (APCBC). In tests the gun was successful against a German Panther tank at nearly 1,000 yards. The 32-pdr gun was mounted in a power-assisted limited traverse mounting; rather than being mounted on the more traditional trunnions, it protruded through a large ball mount in the front of the hull, protected by 225 mm armour. To the left of it was a Besa machine gun in an armoured ball mount. A further two Besa machine guns were mounted in a turret on the top of the hull to the right.

Survivors

One of the six prototype Tortoises constructed of mild steel has been preserved at the Bovington Tank Museum in Bovington, UK. The vehicle is in running condition. A 2011 overhaul saw it running under its own power for the first time since the 1950s. It was shown to the public in June 2011 at Tankfest 2011, the Bovington museum's annual display of running vehicles.

A Tortoise, without its gun, lies on the Kirkcudbright military training area near Kirkcudbright, Scotland. Other damage to the tank and the designation of the Kirkcudbright training area as a Site of Special Scientific Interest mean that removal of the Tortoise to a museum is now unlikely.


Historical Gallery

Historical Accuracy Errata

The following are consensus errors or inconsistencies which have been identified with the configuration of the vehicle in question and conflict with information available on the public record. The causes for these divergences in the game are normally not disclosed and may be rooted in game balance.

There are no historical records of either the 20-pdr or 120 mm L1A1 guns being developed for the Tortoise.


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USA


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Germany


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France


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