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Tortoise

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Tortoise

Tortoise_render_1.jpg
Battle Tier
1234567891011
Overview
Mouse over "
Well, the ones further down, of course.
" for more information
[Client Values; Actual values in
Specifically, the mismatch in crew values caused by commander's 10% crew skill bonus. Outside of a crew of 1 commander only, 100% crew is a fiction. The client values, given for 100% crew, will normally be taken into battle with 110% crew skill members aside from specific functions, causing their actual performance to deviate from the expected client value. These differences are taken into account in tooltip boxes.
]
3,500,000  Credits Cost
20002000 HP Hit Points
77/7776.88/81 t Weight Limit
Crew
  1. Commander
  2. Gunner
  3. Driver
  4. Radio Operator
  5. Loader
  6. Loader
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
228.6/152.4/101.6 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




















630/4400/250




















1060/4400/1200
Shell Cost
250/250/330400/400/515 HP Damage
214/246/47259/326/120 mm Penetration



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12 r/m 

Standard Gun

Reload Times
Nominal: 5 s
50% Crew: 6.19 s
75% Crew: 5.41 s
100% Crew: 4.79 s
Rammer: 4.31 s
Vents: 4.68 s
Both: 4.22 s
Both and BiA: 4.12 s
Both and Max Crew %: 3.95 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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2187.5

Standard Gun

Using Shell Type 1 (250 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2187.5
50% Crew: 1765
75% Crew: 2022.5
100% Crew: 2282.5
100% Crew
Vents: 2335
Rammer: 2535
Both: 2592.5
Both and BiA: 2650
Both and Max Crew %: 2765

Advantageous Damage Per Minute
First-shot DPM: 2437.5
50% Crew: 2015
75% Crew: 2272.5
100% Crew: 2532.5
100% Crew
Rammer: 2785
Vents: 2585
Both: 2842.5
Both and BiA: 2900
Both and Max Crew %: 3015

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (250 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2187.5
50% Crew: 1765
75% Crew: 2022.5
100% Crew: 2282.5
100% Crew
Vents: 2335
Rammer: 2535
Both: 2592.5
Both and BiA: 2650
Both and Max Crew %: 2765

Advantageous Damage Per Minute
First-shot DPM: 2437.5
50% Crew: 2015
75% Crew: 2272.5
100% Crew: 2532.5
100% Crew
Rammer: 2785
Vents: 2585
Both: 2842.5
Both and BiA: 2900
Both and Max Crew %: 3015

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (330 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2887.5
50% Crew: 2329.8
75% Crew: 2669.7
100% Crew: 3012.9
100% Crew
Vents: 3082.2
Rammer: 3346.2
Both: 3422.1
Both and BiA: 3498
Both and Max Crew %: 3649.8

Advantageous Damage Per Minute
First-shot DPM: 3217.5
50% Crew: 2659.8
75% Crew: 2999.7
100% Crew: 3342.9
100% Crew
Rammer: 3676.2
Vents: 3412.2
Both: 3752.1
Both and BiA: 3828
Both and Max Crew %: 3979.8

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
2626 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)

Camouflage

  • Stationary: 8.9%
  • When Moving: 5.4%
  • When Firing: 2.6%


Terrain Resistance

  • On Hard Ground: 1.25
  • On Medium Ground: 1.44
  • On Soft Ground: 2.49


Dispersion Change Values

  • Turret Contribution
  • Rotation: 0.06
  • Shot Recoil: 3.36
  • Suspension Contribution
  • Acceleration: 0.25
  • Turning: 0.25


With 100% Crew

IX

AnnoGB32_Tortoise.png

3500000

The Tortoise is a British tier 9 tank destroyer.

The development of this assault tank began in Great Britain in 1942. The design was finalized by February 1944, and an order was placed for 25 vehicles. However, by the fall of 1947 only five tanks had been manufactured.

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. The Tortoise has a very large hitpoint pool (more than tier 9 heavy tanks being similar to a tier 10 tank).Its large HP pool mixed with its tough mantlet makes this tank became one of strong opponent to face. But, The cupolar and overall slow speed can make this tank vulnerable from encircling.

The Tortoise leads to the FV215b (183).

Modules / Available Equipment and Consumables

Modules

Ico_gun_alpha.png

Guns

Tier Gun Penetration
(mm)
Damage
(HP)
Rate of fire
(rounds/minute)
Dispersion
(m/100m)
Aiming time
(s)
Weight
(kg)
Price
(Credits)

VIII OQF 32-pdr AT Gun 214/246/47 250/250/330 12 0.33 1.7 2972 105000
IX OQF 20-pdr AT Gun Type B Barrel 226/258/42 230/230/280 13.95 0.3 1.5 1282 180000
X 120 mm AT Gun L1A1 259/326/120 400/400/515 8.45 0.31 1.7 2850 320000

Ico_engine_alpha.png

Engines

Tier Engine Engine Power
(hp)
Chance of Fire on Impact
(%)
Weight
(kg)
Price
(Credits)

VIII Rolls-Royce Meteor Mk. V 650 20 744 44000
IX Rolls-Royce Meteor M120 810 20 744 92000

Ico_suspension_alpha.png

Suspensions

Tier Suspension Load Limit
(т)
Traverse Speed
(гр/сек)
Rmin Weight
(kg)
Price
(Credits)

VIII Tortoise 77 20 0 20000 32234
IX Tortoise Mk. 2 81 22 0 20000 63000

Ico_radio_alpha.png

Radios

Tier Radio Signal Range
(м)
Weight
(kg)
Price
(Credits)

VIII WS No. 22 700 40 25000
VIII WS No. 19 Mk. III 550 40 22000
X SR C42 750 40 54000


Compatible Equipment

Superheavy Spall Liner Camouflage Net Fill Tanks with CO2 Coated Optics Experimental Optics Wear-Resistant Gun Laying Drive Venting System Innovative Loading System Extended Spare Parts Kit Enhanced Gun Laying Drive Enhanced Coil Springs Class 3 Improved Ventilation Class 3 Large-Caliber Tank Gun Rammer Binocular Telescope Toolbox "Wet" Ammo Rack Class 2 

Compatible Consumables

Automatic Fire Extinguisher Natural Cover Optical Calibration Aim Tuning Experienced Firefighters 100-octane Gasoline 105-octane Gasoline Manual Fire Extinguisher Vent Purge Large First Aid Kit Large Repair Kit Duty Comes First Shell Organizer Orderly Ammo Rack Focus on Target Pudding and Tea Increased Focus Small First Aid Kit Small Repair Kit Gearbox Intricacy Steady Hand Pre-Battle Maintenance Combat Course 


Player Opinion

Pros and Cons

Pros:

- Highest DPM of the game with the Top gun. It can also fire HESH rounds, which have decent penetration and can deal decent damage against enemy LTs or MTs.

- 4th 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 impenetrable.

- Great accuracy and quick aim time.

- Crew and modules are spaced, so it´s hard to knock them out.


Cons:

- Slow and low maneuverability. Vulnerable to artillery and flanking

- Third worst pen (and only 2 mm higher than the worst) of any tier 9 TD and tied for worst alpha

- Loader (located in machine gun turret) often dies.

- Expensive ammo cost for its fast firing rate (About 1000 per shot compared to 4.5 - 6 seconds reload time)

- Large cupola is visible from all sides and makes the rest of the armor not so effective if exposed


Performance

The Tortoise is a fortress on tracks. It is capable of bouncing shots when angled properly,ricochets even gold tier 10 shells. The high thickness of armor makes it a feared enemy. 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.

The extreme accuracy, 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 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, if you played the other British TD line you should have it unlocked, as the 120mm is the stock (and only) gun of the Conway. After that you can research new suspension to equipping new equipment. 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.

* Its only primary armament is the OQF 32-pdr which it still carries today. The 20-pdr and 120 mm L1A1 configurations are fictitious.
  • The A39 Tortoise actually has 7 crew members, in which the machine gunner is missing, though the game has no such crew position.


UK
Light Tanks IICruiser Mk. I IIM2 IICruiser Mk. III IILight Mk. VIC IIIStuart I-IV IIICruiser Mk. IV IIICruiser Mk. II IVValentine IVCovenanter
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Heavy Tanks VChurchill I VExcelsior VIChurchill VII VITOG II* VIIBlack Prince VIIFV201 (A45) VIIICaernarvon IXConqueror XFV215b XSuper Conqueror
Tank Destroyers IIUniversal Carrier 2-pdr IIIValentine AT IVAlecto VArcher VAT 2 VIChurchill Gun Carrier VIAchilles VIAT 8 VIIChallenger VIIAT 15A VIIAT 7 VIIIAT 15 VIIICharioteer IXTortoise IXFV4004 Conway XFV215b (183) XFV4005 Stage II
Self-Propelled Artillery IILoyd Gun Carriage IIISexton II IIISexton I IVBirch Gun VBishop VIFV304 VIICrusader 5.5-in. SP VIIIFV207 IXFV3805 XConqueror Gun Carriage
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UK IIUniversal Carrier 2-pdr IIIValentine AT IVAlecto VArcher VAT 2 VIChurchill Gun Carrier VIAchilles VIAT 8 VIIChallenger VIIAT 15A VIIAT 7 VIIIAT 15 VIIICharioteer IXTortoise IXFV4004 Conway XFV215b (183) XFV4005 Stage II
Germany IIPanzerjäger I IIIMarder II IVStuG III Ausf. B IVJagdpanzer 38(t) Hetzer IVMarder 38T VStuG IV VPz.Sfl. IVc VStuG III Ausf. G VIDicker Max VIJagdpanzer IV VINashorn VIIE 25 VIIJagdpanther VIISturer Emil VIIIFerdinand VIIIKanonenjagdpanzer VIIIRheinmetall Skorpion G VIIIJagdpanther II VIII8,8 cm Pak 43 Jagdtiger VIIIRhm.-Borsig Waffenträger IXJagdtiger IXWaffenträger auf Pz. IV XGrille 15 XJagdpanzer E 100 XWaffenträger auf E 100
France IIRenault FT AC IIIFCM 36 Pak 40 IIIRenault UE 57 IVSomua SAu 40 VS35 CA VIARL V39 VIIAMX AC mle. 46 VIIIAMX AC mle. 48 VIIIAMX Canon d'assaut 105 IXAMX 50 Foch XAMX 50 Foch (155) XAMX 50 Foch B
USSR IIAT-1 IIISU-76M IIISU-76I IVSU-85B VSU-85 VSU-85I VISU-100 VISU-100Y VIIISU-122S VIISU-152 VIISU-100M1 VIISU-122-44 VIIIISU-152 VIIIISU-130 VIIISU-101 IXObject 704 IXSU-122-54 XObject 263 XObject 268
China IIT-26G FT IIIM3G FT IVSU-76G FT V60G FT VIWZ-131G FT VIIT-34-2G FT VIIIWZ-111-1G FT VIIIWZ-120-1G FT IXWZ-111G FT XWZ-113G FT
Japan
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