GamingDiver / WoWs Legends Ships / Indefatigable

World of Warships: Legends ship guide

Indefatigable

Also called: 不倦 Beta

U.K. · Tier IV · Battleship · Premium

Torpedo battleshipDeck torpedoes back the main guns; the torps are a brawl-range trap.

Playstyle

Anchor a flank at 12-15 km where flanking ships have to cross your torpedo arcs to push
The torpedoes are a deterrent that closes off whole lanes (under 6 km threat)
Avoid: Drifting broadside to set up a torpedo launch

Key characteristics

Long, fast torpedoes (6 km)Lobs over islandsDeep effective HPSuper-healQuick accelerationVisible torps

On this page

Community stats
Playstyle
How to get Indefatigable
Builds
Cohort position
Stats and specs
Charts
Background
Armor
Exteriors

Community Data

Indefatigable Community Stats

Across 250+ Standard battles from 45 players, Indefatigable averages a 61% win rate, 52,600 damage and 1.3 kills per battle, and survives 45% of them.

Community Data

Indefatigable Community Stats

Log in to GamingDiver and upload your data to see Community Data for Indefatigable: community win rate, damage, survival, spotting, and your own comparison.

Playstyle

Overview

Indefatigable is a Tier IV British torpedo-equipped battleship: she carries deck torpedoes reaching 6 km on a hull most BBs lack. The torps are a brawl-range threat that forces approaching ships to peel off or eat a wave; the main battery is the primary damage source, the torps are the trap. She also packs the super-heal (1.6%/s, for 20 s, every 120 s, 2 charges): each Repair Party charge returns dramatically more HP than a standard heal, so her durability comes from sustain alongside the lead trait. Standout traits: deep effective HP in T4 BBs (78,392, 2nd of 24) and fast heal cycle in T4 BBs (11,472 HP, 2nd of 24). The trade is worst torpedo detection in T4 BBs (1.2 km, 3rd of 3).

Positioning

Anchor a flank at 12-15 km where flanking ships have to cross your torpedo arcs to push. The torpedoes are a deterrent that closes off whole lanes (under 6 km threat); use that pressure to force enemies into your main battery, then dump torps as a finisher when they commit. Bow on between salvos to keep the citadel angled. The helm answers quickly (11.2 s), so she can break an incoming salvo that slower hulls have to eat.

Potato Avoidance

Drifting broadside to set up a torpedo launch

The torpedoes are a trap that closes a lane, not a primary weapon; turn out of a launch if the angle exposes the citadel, and use the threat alone to force lane choices. A dead torpedo BB never drops a torp.

Signature Traits

Deep effective HP ↗

78392 effective HP once Repair Party is counted, top decile of T4 BBs. Absorbs more total punishment than the raw HP pool suggests.

ELITE REPAIR PARTY ↗

Super-heal
Fast heal cycle · 11472 HP

ELITE MOBILITY ↗

Quick acceleration
Sharp rudder · 11.2 s

High-arc howitzer

Steep impact angle. Shells lob over island cover into targets you can't see directly.

Visible torps ↗

1.2 km torpedo detect, worst of the 3 T4 BBs with torpedoes. Spotted early, so targets get a long look and room to turn out.

Slow heal cycle ↗

120 s Repair Party reload, worst of T4 BBs. Heals come off cooldown slower than peers.

Acquisition

How to get Indefatigable

Indefatigable is a Premium ship and not available to unlock in the Tech Tree. Acquisition path: Containers. Container chances are shown as the listed odds of receiving this exact ship, dividing grouped ship-pool odds across the resolved ships and including nested container paths when a crate can drop another crate.

ContainersAppears in official container odds below; availability depends on the container being sold or awarded.

While you save up, check active promo codes for free doubloons, camouflages, and other rewards.

Best listed chance for this ship

Battle of Jutland crate 1% Tier IV Premium ship Event · Battle of Jutland crate · 1 of 2 ships
Mystic Box 0.047059% Tier IV Premium ship Event · Mystic Box · 1 of 17 ships

Official WG availability sources

May Update: The Cat and the Eagle Crates Start: 2025-05-15
- Check out the Battle of Jutland crate for a chance to get new ships: German cruiser Leipzig, German battleship Moltke, and British battleship Indefatigable.
Honoring the Battle of Jutland Crates Start: 2025-05-19
- Indefatigable is available in the Battle of Jutland Crate; as part of the large Clash at Sea bundle featuring all the event’s new content; or individually in the Store—equipped with Jutland-themed camouflages.

Show direct source rows

Battle of Jutland crate 1% · Tier IV Premium ship
Mystic Box 0.047059% · Tier IV Premium ship

Want the full picture? Each container page charts the odds as you open more crates - including ~~pity~~ guaranteed-reward timers and, for GD Supporters, pack math personalized to your port.

Builds

Pair with a commander whose unique skill complements her main armament; check the build tool for current recommendations.

Open in Build Tool →

Have a build you swear by? Open it in the Build Tool and hit Save build to share it here, or browse the Ship Builds guide for proven loadouts across the fleet.

Cohort position

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Where Indefatigable sits among Tier IV BBs (23 ships). Notable standouts are shown first; the rest of the cohort-ranked stats are in the expand below. Acquisition variants (Black Friday, Founders Edition) are counted once with their base ship, not as separate peers.

BestTime to 90% speed23.6 s (1/24) BestAcceleration (0-12 kt)5.3 s (1/24) BestTurn speed retained85.4% (1/24) BestRepair heal rate1.6 %/s (1 of 2 tied) Top 10%Rudder shift11.2 s (2/24) Top 10%Main dispersion171.5 m (3/24) Top 10%Displacement22,080 t (2/24) Top 25%Max speed28 kt (7/24) Top 25%Main battery reload27.5 s (7/24) Top 25%HE fire chance34% (6/24) Top 25%AP velocity831 m/s (7/24) Top 25%AP arming threshold51 mm (6/24) Top 25%Secondary range4.5 km (7/24) Bottom 25%Main battery caliber305 mm (19/24) Bottom 25%AP DPM156,684 (20/24) Bottom 25%Secondary DPM (per side)95,094 (19/24) Bottom 25%AA DPS97 (19/23) Bottom 25%Max armor254 mm (20/24) Bottom 25%Citadel belt114 mm (20/24) Bottom 10%AP pen at 10 km259 mm (23/24) WorstSecondary HE alpha1,500 (1 of 2 tied) WorstSecondary fire chance6% (1 of 4 tied) WorstSecondary HE pen17 mm (1 of 2 tied) WorstAA range3 km (1 of 8 tied) WorstTorpedo damage≈8,000 (3/3) WorstTorpedo reaction time8.4 s (3/3) WorstRepair charges2 (1 of 4 tied) WorstEnd plates16 mm (1 of 3 tied / 1 of 3 tied)

See 20 mid-pack stats

Not standouts for Indefatigable -- here's where she sits on every other ranked stat in the cohort. Stats tagged NORM are tied across more than half the cohort, so the value is the cohort default rather than a standout.

Hit points47,800 HP(13/24) Concealment13 km(8/24) Smoke fire bloom10.7 km(12/24) Air detection10.4 km(8/24) Turning circle630 m(9/24) Main battery range14.7 km(16/24) Sigma1.8(11/24) HE shell damage5,000(11/24) Fires per minute5.92(11/24) HE DPM87,047(17/24) AP shell damage9,000(16/24) HE velocity831 m/s(11/24) AP fuse timer0.015 s(16/24) Engine power43,000 hp(14/24) Power / turn radius68.3 hp/m(14/24) Power-to-weight1.95 hp/t(13/24) Effective HE DPM (incl. fire)129,883(10/24) AA threat252(17/23) NormSecondary dispersion bracket57(20 of 24 tied at this value) NormTorpedo reload95 s(2 of 3 tied at this value)

Peers in this cohort

Compare Tier IV Battleships

Show all 23 peers

Stats & specs

Customize in the Build Tool →

Survivability

Hit Points47,800

Displacement22,080 t

Hull dimensions

Length x beam at the waterline, plus draft. Length matters when dodging torpedoes; beam and draft shape how hard the ship is to hit.

179.8 x 24.38 m

Armor range10–254 mm

Plate armor thicknesses10, 13, 16, 25, 32, 38, 51, 64, 76, 102, 114, 127, 178, 229, 254 mm

Armor material/layer entries74

Fire resistance

top hull: 1 − 0.8335 fire coefficient = 16.6%. Lowers how often hits set you on fire. It does not reduce the damage a burning fire does per second; fires burn at the full rate on every ship.

16.6%

Fire duration60 s

Fire damage

One unattended fire: 0.003 of max HP per second (0.3%) × 60 s = 0.18 of the pool; 0.18 × 47,800 HP = 8,604 HP on this ship. 4 fire points can burn at once.

0.3% of HP per second

Flood duration40 s

Flood damage

One unattended flood: 0.005 of max HP per second (0.5%) × 40 s = 0.2 of the pool; 0.2 × 47,800 HP = 9,560 HP on this ship.

0.5% of HP per second

Torp Reduction

1 − 0.315 hull torpedo-damage coefficient / 0.333 unprotected baseline = 5%. Reduces torpedo hit damage. It does not affect flooding: floods start as often and tick at the full rate.

Magazine HP

Per-turret powder-magazine HP, a separate pool from the ship's. Penetrating hits wear it down and the turret is likelier to be knocked out as it falls, so a larger pool keeps the guns firing through punishment that silences a peer's.

18,800

Steering gear HP

Durability of the steering gears. As this pool drops, hits are likelier to jam the rudder; unlike most modules the steering can be knocked out and repaired but is never permanently destroyed.

14,300

Effective HP

Base 47,800 HP plus everything Repair Party can restore: 0.016 of max HP per second (1.6%) × 20 s × 47,800 HP = 15,296 HP per charge, × 2 charges = 30,592 HP. Ceiling, not a prediction: a charge only restores damage actually taken, and only the regeneratable share of it. In practice ships realize about half of this, mostly because half the charges go unspent; a charge that is used returns about 97% of the per-charge figure above.

53,111–78,392

Repairable: penetration50%

Repairable: citadel10%

Repairable: steering gear50%

Bow section HP

Damage saturation pool for the bow: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 1,400 = 2,800), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

1,400

Casemate section HP

Damage saturation pool for the casemate: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 4,200 = 8,400), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

4,200

Auxiliary section HP

Damage saturation pool for the auxiliary room: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 6,000 = 12,000), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

6,000

Hull section HP

Damage saturation pool for the hull: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 35,900 = 71,800), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

35,900

Superstructure section HP

Damage saturation pool for the superstructure: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 1,600 = 3,200), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. The superstructure is not exempt: it saturates exactly like the bow and stern, so shells aimed at it stop dealing full damage once this pool is used up. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

1,600

Stern section HP

Damage saturation pool for the stern: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 1,200 = 2,400), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

1,200

Citadel section HP

This section has no practical saturation cap: every hit here keeps dealing its normal share of damage (on most ships the citadel; on many destroyers the casemate).

No saturation cap

Main Battery

ModuleArtillery: 305 mm/45 BL BVIII*

Mounts / barrels4 mounts / 8 barrels

Reload time27.5 s

Firing range14.7 km

Turret traverse4 °/s

Turret armor178 mm

Turret traverse arcs

How far each mount can train, in degrees to either side of the mount's own facing. A rear turret with ±150° leaves a 60° blind wedge over the bow; one-sided arcs are wing mounts that cover a single side. The data does not say which way each mount faces, so the arcs are listed per mount without bow/stern angles.

2x 299° arc, ±142°, ±150°

Guns to bear

180° − 150° (the most restricted aft-facing mount's arc) = 30° off bow; 180° − 142° (the most restricted forward-facing mount's arc) = 38° off stern. How far off the bow (or stern) the ship must angle before every main turret can fire: the widest blind wedge among the rear-facing (or forward-facing) mounts, from each mount's trainable arc.

30° off bow / 38° off stern

Shell Grouping (σ)1.8

Dispersion type

In practice: 17% tighter (better) horizontal dispersion and 17% less vertical spread at max range (14.7 km) than a standard battleship: about 171 m wide × 103 m tall, against 207 m × 124 m. Also on this curve (56): Al Ägir, Alaska, Alaska B, Anhalt, BA Utnapishtim's Ship, Borodino, Brest, Carnot, Champagne, Cherbourg, Congress, Ägir and 44 more.

Improved battleship & large cruiser

Max Horiz Disp

Horizontal dispersion ellipse width at max range, from the dispersion model:

σ_{H} = (\frac{R}{30} \cdot \frac{idealRadius - minRadius}{idealDistance} + minRadius) \cdot 30

= (\frac{14700}{30} \cdot \frac{10 - 1.6}{1000} + 1.6) \cdot 30 = 171.5 m

171.5 m at 14.7 km

Max Vert Disp

Vertical dispersion ellipse height at max range:

σ_{V} = σ_{H} \cdot radiusOnMax

= 171.5 \cdot 0.6 = 102.9 m

102.9 m at 14.7 km

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}

= 171.5 \cdot \frac{0.6}{1.8} = 57.2 m

57.2 m at 14.7 km

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}

= 102.9 \cdot \frac{0.6}{1.8} = 34.3 m

34.3 m at 14.7 km

Turret turn time

180 degrees / 4 deg/s traverse speed = 45 s.

45 s

Shells/min

8 broadside guns x 60 / 27.571 s (27.5 s = 193 ticks) base reload = 17.4.

17.4

HE shells

HE alpha5,000

HE Velocity831 m/s

Fire Chance34%

HE fire DPM vs T4 BB42830

Effective HE DPM vs T4 BB129876

HE penetration

51 mm ≈ 305 mm caliber / 6 (standard HE penetration ratio).

51 mm

HE full-salvo alpha

5,000 HE damage x 8 broadside guns = 40,000.

40,000

HE DPM

40,000 HE full-salvo alpha x 60 / 27.571 s (27.5 s = 193 ticks) base reload = 87,047.

87,047

Fires/min

17.4 shells/min × 0.34 (34% fire chance) = 5.92.

5.92

AP shells

AP alpha9,000

AP Velocity831 m/s

Min Ricochet45 deg

Guaranteed Ricochet60 deg

Fuse Timer0.015 s

Fuse Threshold51 mm

AP overmatch

floor(305 mm caliber / 14.3) = 21 mm (AP auto-penetrates plating this thick or less).

21 mm

AP Pen Close

AP formula evaluated at muzzle velocity:

P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v_{0}^{1.38}

= 10^{- 7} \cdot 2187 \cdot {389.8}^{0.69} \cdot {0.305}^{- 1.07} \cdot 831^{1.38} = 510.9 mm

510.9 mm point-blank

AP Pen Far

Same formula at the ship's max firing range (14.7 km), where the shell has slowed to 419 m/s:

P = 10^{- 7} \cdot 2187 \cdot {389.8}^{0.69} \cdot {0.305}^{- 1.07} \cdot 419^{1.38} = 198.6 mm

198.6 mm at 14.7 km

AP full-salvo alpha

9,000 AP damage x 8 broadside guns = 72,000.

72,000

AP DPM

72,000 AP full-salvo alpha x 60 / 27.571 s (27.5 s = 193 ticks) base reload = 156,684.

156,684

AP AOE Radius

AP shell over-penetration splash radius; scales with shell mass. Wickes 102mm = 3, standard 152mm CL ~ 20, Iowa 406mm ~ 270, Yamato 460mm = 400, Incomparable 650mm = 550 (max). Larger value = bigger splash damage area when AP over-pens.

Torpedoes

ModuleTorpedoes: 450 mm Mk VII

Launchers / tubes2 launchers × 1 tubes = 2 tubes

Reload time95 s

Projectile speed53.0 kt

Range6 km

Maximum simulated damage

Most targets only intersect one hull section, so a hit transfers about 1/3 of the warhead alpha (2/3 when the warhead blast >= 5000 and the burst reaches a second section). For this ship:

D_{sim} = α \cdot c = 24, 000 \cdot 0.333 = 8, 000

. In battle, a hit on the torpedo belt deals the per-hit figure × (1 − the target's torpedo protection %), a bow or stern hit deals it in full, and a torpedo never counts as a citadel hit.

≈ 8,000

Maximum damage (ammunition)

24,000 warhead alpha / 3 + 800 blast = 8,800. Warhead alpha / 3 plus the blast addend: the per-torpedo damage figure. The 'Maximum simulated damage' row above applies target geometry to the same warhead.

8,800

Torpedo module damage

Per-torpedo module/blast damage parameter. Most torpedoes carry 500 to 2,000; ships announced by WG as dealing increased module damage carry 9,000 to 12,000, so their hits knock out engines, rudders, and turrets far more often. Comparative figure.

800

Torpedo detectability1.2 km

Reaction time

How long a target has to dodge after your torpedo is spotted at its detectability range (lower means less warning):

t_{react} = \frac{1.2 km}{53 kt \times 2.6855} = 8.4 s

. 2.6855 converts knots to m/s on the game clock. Base value; commander torpedo-concealment skills lower it further.

8.4 s

Flooding chance

This torpedo carries a flooding-chance value of 0.63 per hit, shown as

0.63 \times 100 = 63 %

. Values above 100% are normal: in battle the base chance is scaled down by the target's torpedo protection (the Torp Reduction stat on its Survivability card) and any flood-resistance modifiers, so a value above 100% keeps flooding likely even through partial protection.

63%

Torpedo launcher traverse12 °/s

Launch arcscentreline 0.2°

Torp Turn

Time to rotate the launchers 180 deg:

t_{turn} = \frac{180 °}{12 ° / s} = 15 s

15 s

Torp Arming172 m

Per-side salvo damage

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 1 x 8,000 = 8,000. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

8,000

AA Defense

AA mount points10

Maximum AA range

Longest-reaching family on the in-game AA card. Base AirDefense aura max range is 3 km; dual-purpose mount auras extend it.

3 km

76.2 mm/45 HA Mk IV4×1 76mm

40 mm/39 QF Mark II6×1 40mm

Guns76.2 mm/45 HA Mk IV

Continuous DPS

Effective DPS: 7 raw aura damage × 3.5 × 0.75 hit probability = 18 - the same in-game units as the Close-range AA DPS headline.

Range3 km

Guns40 mm/39 QF Mark II

Continuous DPS

Effective DPS: 30 raw aura damage × 3.5 × 0.75 hit probability = 79 - the same in-game units as the Close-range AA DPS headline.

Range2.5 km

Total DPS in Aura

Outer Medium 18 + Inner Medium 79 = 97

See the AA layers diagram ↓

Secondary Battery

Mounts16

Firing range4.5 km

Shell Grouping (σ)1

Secondary DPM (per side)

Sum across all secondary families of (per-side barrels × 60 / reload_s × alpha), with each reload counted in whole 1/7 s ticks (guns fire on the first tick after the reload), where per-side barrels = mounts × barrels-per-mount / 2 (the guns that bear on one broadside target). Per-family: 16×1 102 mm (8/side) × 60/7.571 s (7.5 s = 53 ticks) × 1500 = 95,094. Assumes every shell hits (real hit rate is lower; the Brawl matchup tool on the Compare page folds in dispersion + target armor).

95,094

Secondary fire DPM vs T4 BB (per side)

Fires/min (per side) 3.8 × (1 − 0.166 fire resistance) × 60 s × 0.003 of max HP per second × 48,200 HP = 27,523. Per side: the barrels that bear on one broadside target (mounts × barrels / 2). A ceiling: assumes every shell hits and ignores the four-fire cap and Fire Prevention.

27,523

Total secondary DPM vs T4 BB (per side)

Secondary DPM (per side) 95,094 + secondary fire DPM 27,523 = 122,618: shell damage plus fire damage against one T4 battleship, every shell hitting.

122,618

102 mm/50 BL PII16×1 102mm

Caliber102 mm

Reload time7.5 s

HE alpha1,500

Muzzle Velocity873 m/s

Fire Chance6%

Secondary fires/min (per side)

16×1 barrels / 2 sides × 60 / 7.571 s (7.5 s = 53 ticks) × 0.06 (6% fire chance) = 3.8. Per side: the barrels that bear on one broadside target (mounts × barrels / 2). A ceiling: assumes every shell hits and ignores the four-fire cap and Fire Prevention.

3.8

HE Pen17 mm

Secondary dispersion type

Max dispersion = range (km) × 57 + 30. Each dispersion type sets its own slope; this is not a percentage applied to a standard baseline.

Standard

Max secondary dispersion @ 4.5 km

4.5 km × 57 + 30 = 286.5 m.

286.5 m

Maneuverability

Engine power43,000 hp

Maximum speed28.0 kt

Turning circle radius630 m

Rudder shift time11.2 s

Engine power-boost threshold23.9 kt

Engine spool-up time23 s

Reverse spool-up time11.5 s

Reverse speed

top speed / 4 + 4.9 = 28 / 4 + 4.9 = 11.9 kt. Base value; speed modifiers scale it.

11.9 kt

Crash stop

Seconds from top speed to a dead stop after ordering full reverse: reverse power winds in over the reverse spool-up while water drag does most of the braking, using the ship's own reverse-power ratio. The full curve is on the acceleration chart. Full reverse stops about a quarter faster than a plain Stop order from top speed.

50.7 s

Engine boost threshold (reverse)

Speed below which the engine's built-in power boost applies in reverse.

7.7 kt

Acceleration 0-90%

Time to reach 90% of top speed (25.2 kt of 28.0 kt).

23.6 s

Acceleration 0-99%

Time to reach 99% of top speed (27.7 kt of 28.0 kt). 99% rather than 100% because true top speed is asymptotic (thrust meets drag), so the last fraction of a knot is never quite gained.

45.8 s

Guns in a full turn

With the rudder hard over the hull turns 5.0°/s, so a target drifts across the bow at that rate. Turret traverse minus hull turn: 4 − 5.0 = -1.0°/s, so the guns fall behind and catch up once the turn eases. Main Battery Mod. 2 (+20% traverse) and Mod. 3 (−15%) move this line.

fall behind by 1.0°/s

See the full acceleration curve ↓

Concealment

Detectability by sea

Base value, no camouflage. With a Grade IV permanent camo (or any disposable camo): 13 km x 0.955 = 12.41 km. Camouflage does not change detectability by air.

13 km

With Grade IV camouflage (sea)

Detectability by sea 13 km x 0.955 (Grade IV permanent camo or any disposable camo) = 12.41 km.

12.41 km

Detectability by air10.4 km

Smoke firing penalty10.7 km

Detect when firing (sea)

max(main battery range, sea detectability 13 km) = 14.7 km. Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach.

14.7 km

Detect when firing (air)

Air detectability 10.4 km + gun-firing bloom 6.1 km = 16.5 km. The bloom tracks main-battery caliber 305 mm × 0.020 = 6.1 km.

16.5 km

Detect when on fire (sea)

Sea detectability 13 km + 2.0 km while burning = 15 km.

15 km

Detect when on fire (air)

Air detectability 10.4 km + 3.0 km while burning = 13.4 km.

13.4 km

Guaranteed Detect2 km

✦

Consumables

Damage Control Party∞ charges · 80 s reload · 15 s active

Repair Party2 charges · 120 s reload · 20 s active · 15,296 HP (32% of max HP) total heal (per charge)
ƒ
0.016 of max HP per second (1.6%) × 20 s effective active time = 0.32 of max HP × 47,800 HP = 15,296 HP: up to 32% of max HP restored per charge.
· 30,592 HP (64% of max HP) total heal (all charges)
ƒ
0.32 of max HP per charge × 2 charges = 0.64 × 47,800 HP = 30,592 HP: up to 64% of max HP if the whole Repair Party loadout is used.
· 765 HP/s (1.6% of max HP) heal per second
ƒ
0.016 (1.6% of max HP) × 47,800 HP = 765 HP/s. WoWS heals a flat percent of MAX HP each second, so this rate holds at any health level.

Enhanced Secondary Targeting3 charges · 160 s reload · 30 s active · +100% grouping · -50% dispersion

Under the hood

Show ▾

All values are ship base stats with modifications and upgrade changes denoted inline.

The constants behind the formulas and the long tail: shell and dispersion inputs, fixed-range anchors, salvo math, layered AA. Click the formula chip on any row to see how it is calculated.

Main battery formulas

vs standard BB17% tighter H · 17% shorter V

H = horizontal, V = vertical spread. This ship's curve against the standard battleship curve, both evaluated at this ship's max range (14.7 km) with the same model as Max Horiz/Vert Disp: horizontal 171 / 207 m − 1 = -17%, vertical 103 / 124 m − 1 = -17%. Shell grouping (σ) is separate: it sets how shells bunch toward the centre of this ellipse.

Shell scatter width @ 5 km90 m

(166.7 × (10 − 1.6) / 1000 + 1.6) × 30 = 90 m. Horizontal scatter at a fixed 5 km, from the same dispersion model as the rows below - a knife-fight-range anchor comparable across ships.

Shell scatter width @ 10 km132 m

(333.3 × (10 − 1.6) / 1000 + 1.6) × 30 = 132 m. How wide your shells scatter at 10 km, from the same dispersion model as the max-range figure above. Picking a fixed range makes this number directly comparable from ship to ship: max-range dispersion makes a longer-range gun look worse even when it's tighter at any common range. The interactive Dispersion tab on the Charts card plots the full curve from 0 to max range.

Shell scatter height @ 5 km36.4 m

How tall the scatter ellipse is at a fixed 5 km, from the same model, comparable from ship to ship. The height/width ratio is a piecewise-linear curve through three points from the ship's own dispersion data:  $radiusOnZero = 0.2$  at 0 m,  $radiusOnDelim = 0.5$  at  $delim \cdot R_{m a x} = 0.5 \cdot 14700 = 7350$  m, and  $radiusOnMax = 0.6$  at 14700 m. Below the kink:  $k = 0.2 + (0.5 - 0.2) \cdot \frac{5000}{7350} = 0.4041$ , so  $σ_{V} = σ_{H} \cdot k = 90 \cdot 0.4041 = 36.4 m$ .

Shell scatter height @ 10 km70.8 m

How tall the same scatter ellipse is at 10 km. Comparable from ship to ship for the same reason as the width value above. The height/width ratio is a piecewise-linear curve through three points from the ship's own dispersion data:  $radiusOnZero = 0.2$  at 0 m,  $radiusOnDelim = 0.5$  at  $delim \cdot R_{m a x} = 0.5 \cdot 14700 = 7350$  m, and  $radiusOnMax = 0.6$  at 14700 m. Above the kink:  $k = 0.5 + (0.6 - 0.5) \cdot \frac{10000 - 7350}{14700 - 7350} = 0.5361$ , so  $σ_{V} = σ_{H} \cdot k = 132 \cdot 0.5361 = 70.8 m$ .

AP pen 5 km361 mm

AP penetration at a fixed 5 km, from the same ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 2187 \cdot {389.8}^{0.69} \cdot {0.305}^{- 1.07} \cdot {646.5}^{1.38} = 361 mm$ , where 646.5 m/s is the shell's speed when it arrives at 5 km (from 831 m/s at the muzzle). Fixed anchors make ships directly comparable at the same fighting distance; the Charts card plots the full curve.

AP pen 10 km259 mm

AP penetration at a fixed 10 km, from the same ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 2187 \cdot {389.8}^{0.69} \cdot {0.305}^{- 1.07} \cdot {508.3}^{1.38} = 259 mm$ , where 508.3 m/s is the shell's speed when it arrives at 10 km (from 831 m/s at the muzzle). Fixed anchors make ships directly comparable at the same fighting distance; the Charts card plots the full curve.

AP flight time @ 10 km5.65 s

How long an AP shell takes to reach a target at a fixed 10 km, from the same numerically integrated trajectory the Charts card plots. The shell slows under quadratic air drag,  $a_{drag} = k ρ v^{2}$ , where  $ρ$  is air density from a standard-atmosphere profile and  $k$  bundles the shell's drag coefficient, caliber and mass:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.4391 \cdot {0.305}^{2}}{8 \cdot 389.8} = 4.12 \times 10^{- 5}$ . That runs from a 831 m/s muzzle velocity in 0.02 s steps under gravity 9.8 m/s² until the shell lands, then divides by 2.77 because the game clock runs faster than real time. Lower is better, since a faster shell is harder to dodge and needs less lead.

HE flight time @ 10 km5.67 s

How long an HE shell takes to reach a target at a fixed 10 km, from the same numerically integrated trajectory the Charts card plots. The shell slows under quadratic air drag,  $a_{drag} = k ρ v^{2}$ , where  $ρ$  is air density from a standard-atmosphere profile and  $k$  bundles the shell's drag coefficient, caliber and mass:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.4391 \cdot {0.305}^{2}}{8 \cdot 386} = 4.16 \times 10^{- 5}$ . That runs from a 831 m/s muzzle velocity in 0.02 s steps under gravity 9.8 m/s² until the shell lands, then divides by 2.77 because the game clock runs faster than real time. Lower is better, since a faster shell is harder to dodge and needs less lead.

Guns per full salvo (alpha, DPM)8

4 mounts × 2 barrels = 8; all 8 bear on the broadside.

Model inputs

Krupp (AP)2,187

Armor-penetration constant of the AP shell; penetration scales straight with it, so a 10% higher Krupp is 10% more penetration at every range.

AP shell mass389.8 kg

Enters penetration as mass^0.69 and slows the shell's drag deceleration, so a heavier shell keeps more velocity at range.

AP drag coefficient0.4391

Air drag on the AP shell in flight; lower keeps velocity, and with it penetration, at long range.

AP muzzle velocity831 m/s

Starting speed of the AP shell; penetration scales with velocity^1.38.

HE muzzle velocity831 m/s

Starting speed of the HE shell; sets its flight time and lead.

idealRadius10

Horizontal dispersion growth per idealDistance of range, in 30 m units; the slope of the scatter-width line.

minRadius1.6

Horizontal dispersion at zero range, in 30 m units; the intercept of the scatter-width line.

idealDistance1,000 m

Range step over which horizontal dispersion grows by idealRadius.

taperDist4,000 m

Inside this range the scatter width tapers toward minRadius instead of following the line.

radiusOnZero0.2

Vertical scatter as a share of horizontal at zero range.

radiusOnDelim0.5

Vertical scatter as a share of horizontal at the delim point.

radiusOnMax0.6

Vertical scatter as a share of horizontal at maximum range.

delim0.5

Where the vertical-scatter curve bends, as a share of maximum range.

Torpedoes

Estimated torpedo reaction time8.4 s

1200 m / (53.0 kt × 2.6855) = 8.4 s. detectability / (speed kt x 2.6855 m/s per knot on the game clock).

Torpedo speed53.0 kt

Travel time to max range42.2 s

6000 m / (53.0 kt × 2.6855) = 42.2 s. range / (speed kt x 2.6855 m/s per knot on the game clock).

Tube count2

2 launchers × 1 tubes.

Per-side salvo1 torpedoes

2 wing tubes / 2 = 1: the launchers sit one per beam, so only half of them reach any one side. Each launcher reloads on its own, so she can fire one beam, turn, and fire the other without waiting.

Full-salvo damage16,000

All tubes hitting one target: tubes x per-torpedo simulated damage = 2 x 8,000 = 16,000. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

AA defense

AA DPS at max range18

Only families that reach 3 km contribute at the outer edge of the AA bubble. In-game families: 40mm 2pdr QF MKII PomPom 6x1 -> 79 DPS @ 2.5 km; 3in HA 12PDR 4x1 -> 18 DPS @ 3 km.

AA DPS layered by range18 DPS @ 3 km, 97 DPS @ 2.5 km

@ 3 km: 18 from one family; @ 2.5 km: 79 + 18 = 97. Cumulative AA DPS at each family range threshold. Inner ranges stack the outer families, so a target closing the distance hits stronger AA bubbles as it crosses each band.

AA DPS at point-blank97

79 + 18 = 97 DPS: the sum of every family's average DPS, achievable only inside the closest-range family (2.5 km).

AA threat index252

79 × 2.5 + 18 × 3 = 252. SUM over AA auras of (aura DPS x aura range km). A plane crossing the AA bubble is exposed to each aura for a time proportional to that aura's range, so long-reach DPS is worth more than the same DPS in a short bubble. Units: DPS*km; used to rank overall AA threat across the cohort.

Secondary battery firepower

Max HE alpha1500

The only family (102 mm): 1500. Maximum HE damage per shell across secondary HE families. Best on this ship: 1500 from the 102 mm family.

Max HE fire chance6%

The only family (102 mm): 6%. Maximum per-shell fire chance across secondary HE families (before target fire resistance is applied). Best on this ship: 6% from the 102 mm family.

Max HE pen17 mm

The only family (102 mm): 17 mm. Maximum HE armor penetration across secondary HE families (caliber × 1/6 for most nations; 1/4 for German/UK BBs). Shells whose pen falls under a plate's armor thickness shatter for 0 hull damage though fire chance still applies. Best on this ship: 17 mm from the 102 mm family.

Open in Charting Tool

Ship Charts

Background

HMS Indefatigable was laid down in 1909 and commissioned in 1911 to start serving within the 1st Battlecruiser Squadron. After transferring to the Mediterranean in 1913, she participated in the search for battlecruiser Goeben and blockade of the Dardanelles. In 1915, Indefatigable returned to the United Kingdom to join the 2nd Battlecruiser Squadron. She was sunk during the Battle of Jutland the following year when her magazine detonated.

Armor Beta

Hull HP 47,800, distributed across 5 hull zones, each with its own plate thicknesses, saturation cap, and pen thresholds.

Bow & stern16 mm

Overmatched by 77+ AP guns across the bracket. Can’t reliably bow-tank; gets bow-citadelled and overpenned.

Belt / citadel229 mm

AP can citadel a flat broadside even at range. Stay angled and avoid showing the full side.

Farming10 mm

Superstructure and extremities take HE pens and AP overpens from nearly any gun: steady chip damage. Fire resistance 17%, fires burn 60s. Range-by-range in the Compare tool →

Section	Plates	HP cap	Threats	Tactic
Bow	16 mm primary (range 16–64 mm)	1,400 (3% of HP)	Overmatched by 283mm+ AP (Nassau, Von Der Tann)Angle bounces 203mm16 mm: HE pens from 127mm+	Bow-tank fits behind this exterior plate. Saturation is FAST here; the cap is often only a few thousand HP.
Hull (midship)	229 mm primary (range 16–229 mm)	35,900 (75% of HP)	No common AP caliber overmatches229 mm: no common HE pens	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	16 mm primary (range 16–64 mm)	1,200 (3% of HP)	Overmatched by 283mm+ AP (Nassau, Von Der Tann)Angle bounces 203mm16 mm: HE pens from 127mm+	Mirror of bow. Same fast saturation.
Citadel	229 mm primary (range 16–114 mm)	≈ 165,500 (effectively no cap)	Citadel pen: full damageOver-pen: ×0.10 damage	Effectively no cap; citadel pool sits at ~165k HP on every ship. An AP citadel penetration deals the shell's full damage, the biggest single hit available; only over-penetrations are damped, to ×0.10.
Superstructure	10 mm primary (range 10–254 mm)	1,600 (3% of HP)	Any HE ≥16 mm pens at full damage	Any HE ≥16 mm pens at full damage. HE-spam target, and the section saturates fast (often only a few thousand HP).
Turret (module, per magazine)	separate HP pool, does not drain ship HP	18,800 magazine HP	Turret knocked out	Per-turret powder-magazine HP, a separate pool that does not drain ship HP. As it is worn down the turret is likelier to be knocked out, and a smaller pool gets there faster.
Secondary mount (102 mm mount)	separate HP pool, does not drain ship HP	800 per-mount HP	Destroyed at 0 HP	Per-mount HP for the heaviest secondary on this ship. A mount destroyed at 0 HP is out for the rest of the battle; DCP does not repair destroyed mounts. Smaller (lighter-caliber) secondaries typically share the same HP value.
AA mount (76 mm mount)	separate HP pool, does not drain ship HP	200 per-mount HP	Destroyed at 0 HP	Per-mount HP for the heaviest AA on this ship. An AA mount destroyed at 0 HP stops shooting down planes for the rest of the battle; DCP does not repair destroyed mounts. HE shells specifically target AA mounts since the small-caliber HP pool falls fast.
Rudder (module)	separate HP pool, does not drain ship HP	14,300 module HP	Incapacitated at 0 HP	When module HP reaches 0 the rudder locks at its current angle until DCP repairs it. Repair via Damage Control Party.

Saturation cap = HP a section can absorb before further damage to it is reduced (the "bow-tank" effect). Citadel pool is ~165k on every ship (effectively no cap); damage is gated by pen/over-pen multipliers instead. Superstructure saturates fast but HE always pens regardless of the plate thickness. Rudder (and other module HPs) are a separate pool from ship HP: damaging a module doesn't drain ship HP. Incapacitated modules like the rudder and engine are restored by DCP, but secondary and AA mounts destroyed at 0 HP stay out for the rest of the battle.

Exteriors

Skins & permanent camouflages

Every custom exterior Indefatigable can equip.

DefaultThe ship’s standard exterior

Primary official WG sources

Filtered to official World of Warships: Legends pages where this ship is a focus, reward, line member, or high-context variant mention.

2025-05-15 · Patch notes May Update: The Cat and the Eagle Patch notes

Indefatigable

Indefatigable Community Stats

Indefatigable Community Stats

Indefatigable Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get Indefatigable

Best listed chance for this ship

Builds

Cohort position

Peers in this cohort

Stats & specs

Under the hood

Main battery formulas

Model inputs

Torpedoes

AA defense

Secondary battery firepower

Ship Charts

Background

Armor Beta

Skins & permanent camouflages

Primary official WG sources

Signature Traits