Perth Build & Guide | WoWs Legends

Playstyle

Overview

Perth is a Tier V Commonwealth light cruiser with Sonar as her vision tool. Hydro lets her contest islands and smoke without exposing the hull to vision cycles, which shapes how she pressures caps. Standout traits: best AA reach in T5 CAs (5 km).

Positioning

Sit 12-15 km from a contested cap where an island shadows you from the opposite battleship line. Hydro (4.4 km on ships, 3.1 km on torpedoes) lights up DDs and incoming torpedoes inside its bubble, so you can push the cap edge from cover without taking the spotting cycle; prefer cover positions over open-water flanks.

Potato Avoidance

Open-water broadside trading

Her 152mm shells citadel cruisers on the wrong frame, and her 27,100-HP hull does not recover from a punished salvo. Pick rotations and angles deliberately; the chip-damage role pays better than the trade-blow role on a cruiser of this profile.

Signature Traits

Long-reach AA

5.0 km AA reach, best of T5 CAs.

Thick stern plate

32.0 mm stern, top decile of T5 CAs.

Heavy secondary DPM

120000.0 secondary DPM per side, top decile of T5 CAs. Per-side barrels × shots/min × alpha across every secondary family; real damage scales with hit rate against the target.

Smoke cruiser

Smoke on a cruiser is rare. Fight from concealment, then disengage.

Weak AA

104.0 AA DPS, bottom decile of T5 CAs. Aircraft chew through with impunity; lean on positioning over AA.

Weak torp belt

0.0% torpedo damage reduction, bottom quartile of T5 CAs. Torps hit for closer to their printed damage.

Acquisition

How to get Perth

Perth 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.

Best listed chance for this ship

Halloween '25 crate 1.5% Tier V Premium ship Event containers · Halloween '25 crate · 1 of 2 ships

Official WG availability sources

Official WoWS Legends container odds Containers Official container drop rows linked below include direct and nested effective ship odds.

Show direct source rows

Halloween '25 crate 1.5% · Tier V Premium ship

Builds Beta

Build for smoke utility, concealment, reload, fire chance, and survivability.

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Cohort position

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Where Perth sits among Tier V CAs (28 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.

BestSecondary range5 km (1 of 5 tied) BestAA range5 km (1 of 10 tied) Top 25%Main battery reload6.8 s (6/28) Top 25%Secondary DPM (per side)120,000 (5/25) Top 25%Acceleration9.2 s (6/28) Top 25%Displacement8,965 t (6/28) Top 25%Stern armor32 mm (4/28) Bottom 25%Hit points27,100 HP (24/28) Bottom 25%Main battery range14.18 km (25/28) Bottom 25%HE shell damage2,100 (21/26) Bottom 25%HE fire chance9% (21/26) Bottom 25%AP shell damage3,100 (23/28) Bottom 25%Torpedo reload96 s (19/24) Bottom 25%Bow armor20 mm (25/28) Bottom 10%AA threat367 (27/28) WorstAA DPS104 (28/28)

See 29 mid-pack stats

Not standouts for Perth -- 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.

Max speed32.5 kt(17/28) Concealment11.34 km(12/28) Air detection6.8 km(11/28) Rudder shift9.9 s(10/28) Traverse-to-turn ratio4.68 ×(21/28) Main battery caliber152 mm(19/28) Sigma2(15/28) Fires per minute6.35(15/26) HE DPM148,235(11/26) AP DPM218,824(11/28) Main dispersion130.8 m(17/28) HE alpha1,500(11/25) Secondary fire chance6%(13/25) Secondary HE pen17 mm(13/25) AP velocity841 m/s(19/28) HE velocity841 m/s(17/26) AP fuse timer0.03 s(17/28) AP arming threshold25 mm(11/28) Engine power72,500 hp(21/28) Turn-speed retention113.3 hp/m(20/28) Power-to-weight8.09 hp/t(17/28) Torpedo range8.01 km(13/24) Torpedo damage15,433(11/24) Torpedo speed61 kt(11/24) Max armor100 mm(19/28) Citadel belt100 mm(14/28) Deck armor100 mm(9/28) NormAP ricochet start45°(25 of 28 tied at this value) NormAP auto-bounce angle60°(25 of 28 tied at this value)

Peers in this cohort

Almirante Cochrane vs

Show all 27 peers

Stats & specs

Customize in the Build Tool →Shell ballistics chart More tools in the WoWS Legends Data Lab

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

Sonar 4.4 kmDef-AASmokeFighter

Survivability

Hit Points27,100

Displacement8,965 t

Armor range10–100 mm

Plate armor thicknesses10, 13, 16, 20, 25, 32, 37, 51, 76, 89, 100 mm

Armor material/layer entries45

Fire resistance23.3%

Fire duration30 s

Torp Reduction0%

Magazine HP

ƒ

The magazine is the module a detonation comes from. Penetrating hits to it raise the detonation chance from 1% toward 30% as its HP is worn down, so a larger magazine pool rides out citadel hits longer before a detonation becomes likely.

13,600

Steering gear HP

ƒ

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.

8,100

Main Battery

ModuleArtillery: 152 mm/50 Mk XXI

Mounts / barrels4 mounts / 8 barrels

Reload time7.5 s

Firing range14.2 km

Turret traverse7 °/s

Shell Grouping (σ)

ƒ

Shell grouping (sigma); shown in-game as Shell Grouping.

2

Max Horiz Disp

ƒ

Horizontal dispersion ellipse width at max range. (R/30·(idealRadius−minRadius)/idealDistance + minRadius)·30 = (14181/30·(8−1.1)/1000 + 1.1)·30 = 130.8 m

130.8 m

Max Vert Disp

ƒ

Vertical dispersion ellipse height at max range = max horizontal × radiusOnMax = 130.8 × 0.6 = 78.5 m

78.5 m

Med Horiz Disp

ƒ

50%-hit horizontal radius = max horizontal × GetHalfHitsRatio(σ) = 130.8 × 0.32 (σ=2) = 41.8 m

41.8 m

Med Vert Disp

ƒ

50%-hit vertical radius = max vertical × GetHalfHitsRatio(σ) = 78.5 × 0.32 (σ=2) = 25.1 m

25.1 m

Turret turn time

ƒ

180 degrees / 7 deg/s traverse speed = 25.7 s.

25.7 s

Base shells/min

ƒ

8 broadside guns x 60 / 7.5 s base reload = 64.

64

HE shells

HE Damage2,100

HE Velocity841 m/s

Fire Chance9%

HE penetration

ƒ

25 mm ≈ 152 mm caliber / 6 (standard HE penetration ratio).

25 mm

HE full-salvo alpha

ƒ

2,100 HE damage x 8 broadside guns = 16,800.

16,800

Base HE DPM

ƒ

16,800 HE full-salvo alpha x 60 / 7.5 s base reload = 134,400.

134,400

Base fires/min

ƒ

8 HE shells x 60 / 7.5 s reload x 9% fire chance = 5.76.

5.76

AP shells

AP Damage3,100

AP Velocity841 m/s

Min Ricochet45 deg

Guaranteed Ricochet60 deg

Fuse Timer0.025 s

Fuse Threshold25 mm

AP overmatch

ƒ

floor(152 mm caliber / 14.3) = 10 mm (AP auto-penetrates plating this thick or less).

10 mm

AP Pen Close

ƒ

Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: 1e-7 × Krupp × mass^0.69 × caliber_m^-1.07 × v0^1.38 = 1e-7 × 2609 × 50.8^0.69 × 0.152^-1.07 × 841^1.38 = 320 mm. Matches the in-game spec card.

320 mm

AP Pen Far

ƒ

Same formula at the ship's max firing range (17.7 km), where the shell has slowed to 306.1 m/s: 1e-7 × 2609 × 50.8^0.69 × 0.152^-1.07 × 306.1^1.38 = 79.3 mm.

79.3 mm

AP full-salvo alpha

ƒ

3,100 AP damage x 8 broadside guns = 24,800.

24,800

Base AP DPM

ƒ

24,800 AP full-salvo alpha x 60 / 7.5 s base reload = 198,400.

198,400

AP AOE Radius

ƒ

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.

15

◇

Torpedoes

ModuleTorpedoes: 533 mm QR Mk IV

Launchers / tubes2 launchers × 4 tubes = 8 tubes

Reload time96 s

Projectile speed61 kt

Range8.01 km

Maximum simulated damage14,333 (est.)

Alpha damage43,000

Torpedo detectability1.3 km

Torpedo launcher traverse25 °/s

Torp Turn7.2 s

Torp Arming188 m

Per-side salvo damage

ƒ

per-side salvo x per-torpedo simulated damage.

57,332

AA Defense

AA mount points7

Close-range AA DPS

ƒ

Sum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (9×3.5×0.85) + (6×3.5×0.85) + (19×3.5×0.9) = 104. Covers AA-only mounts plus dual-purpose secondaries (Bismarck 105mm, USN 5"/38 cruiser secondaries) and dual-purpose main batteries (Sumner-class 5"/38, Akizuki-line 100mm). Formula validated against in-game captures on California, Sumner, Manfred von Richthofen, Dante Alighieri (exact) and within +/-17% on the remaining verified ships.

104

Maximum AA range

ƒ

Longest-reaching aura across AA-only + dual-purpose auras.

5 km

20 mm Oerlikon Mk IV2×1 20mm

12.7 mm Mk III5×4 13mm

102 mm/45 QF Mk XIX (DP)4×2 102mm

DPS

ƒ

Includes 19 continuous AA damage from dual-purpose secondaries firing as AA in this range band.

19

Range5 km

DPS6

Range2 km

Total DPS in Aura

ƒ

Far 19 + Outer Near 6 = 25

25

DPS9

Range1.2 km

Total DPS in Aura

ƒ

Far 19 + Outer Near 6 + Inner Near 9 = 34

34

S

Secondary Battery

Mounts4

Firing range5.0 km

Shell Grouping (σ)1

Caliber102 mm

Reload time3 s

HE Damage1,500

Muzzle Velocity811 m/s

Fire Chance6%

Armor Pen17 mm

Min Ricochet91°

Max Ricochet60°

Secondary dispersion type

ƒ

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 @ 5 km

ƒ

5 km × 57 + 30 = 315 m.

315 m

Maneuverability

Engine moduleEngine: 72,500 hp

Engine power72,500 hp

Maximum speed32.5 kt

Turning circle radius640 m

Engine power multiplier speed threshold7 kt

Traverse-to-turn ratio4.7× drags

Concealment

Detectability by sea11.34 km

Detectability by air6.8 km

Smoke firing penalty5.28 km

Detect after firing main guns11.34 km

Detect Fire Sea13.34 km

Detect Fire Air9.8 km

Guaranteed Detect2 km

✦

Consumables

Damage Control Party∞ charges · 60 s reload · 5 s active

Sonar2 charges · 180 s reload · 92 s active · 4.4 km ship detect · 3.13 km torpedo detect

Choose one

Defensive AA Fire3 charges · 140 s reload · 25 s active · +100% flak burst boost

Catapult Fighter3 charges · 70 s reload · 55 s active · 5.56 km patrol radius · 1 squadron size

Smoke Generator3 charges · 160 s reload · 15 s emit / 10 s cloud active

Module options (1)

Stats above use the fully-upgraded modules. These are the research-tree alternatives; trade-offs are flagged.

HullUpgrade

Turret traverse7 → 10 °/s

See all derived stats

Show ▾

Numbers the spec table cannot show directly: alpha-strike math, DPM, dispersion, AP penetration. Click the formula chip on any row to reveal how it is calculated.

Main battery formulas

Shell Grouping (σ)2

Shell grouping (sigma); shown in-game as Shell Grouping.

Max Horiz Disp130.8 m

Horizontal dispersion ellipse width at max range. (R/30·(idealRadius−minRadius)/idealDistance + minRadius)·30 = (14181/30·(8−1.1)/1000 + 1.1)·30 = 130.8 m

Max Vert Disp78.5 m

Vertical dispersion ellipse height at max range = max horizontal × radiusOnMax = 130.8 × 0.6 = 78.5 m

Med Horiz Disp41.8 m

50%-hit horizontal radius = max horizontal × GetHalfHitsRatio(σ) = 130.8 × 0.32 (σ=2) = 41.8 m

Med Vert Disp25.1 m

50%-hit vertical radius = max vertical × GetHalfHitsRatio(σ) = 78.5 × 0.32 (σ=2) = 25.1 m

AP Pen Close320 mm

Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: 1e-7 × Krupp × mass^0.69 × caliber_m^-1.07 × v0^1.38 = 1e-7 × 2609 × 50.8^0.69 × 0.152^-1.07 × 841^1.38 = 320 mm. Matches the in-game spec card.

AP Pen Far79.3 mm

Same formula at the ship's max firing range (17.7 km), where the shell has slowed to 306.1 m/s: 1e-7 × 2609 × 50.8^0.69 × 0.152^-1.07 × 306.1^1.38 = 79.3 mm.

HE penetration25 mm

25 mm ≈ 152 mm caliber / 6 (standard HE penetration ratio).

AP overmatch10 mm

floor(152 mm caliber / 14.3) = 10 mm (AP auto-penetrates plating this thick or less).

AP AOE Radius15

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.

Broadside guns used for alpha8

All 8 barrels bear on the broadside.

Turret turn time25.7 s

180 degrees / 7 deg/s traverse speed = 25.7 s.

HE full-salvo alpha16,800

2,100 HE damage x 8 broadside guns = 16,800.

AP full-salvo alpha24,800

3,100 AP damage x 8 broadside guns = 24,800.

Base HE DPM134,400

16,800 HE full-salvo alpha x 60 / 7.5 s base reload = 134,400.

Base AP DPM198,400

24,800 AP full-salvo alpha x 60 / 7.5 s base reload = 198,400.

Base shells/min64

8 broadside guns x 60 / 7.5 s base reload = 64.

Base fires/min5.76

8 HE shells x 60 / 7.5 s reload x 9% fire chance = 5.76.

Torpedoes

Torpedo detectability1.3 km

Estimated torpedo reaction time8.2 s

detectability / (speed kt x 2.6 community game-speed factor).

Torpedo speed61 kt

Travel time to max range50.5 s

range / (speed kt x 2.6 community game-speed factor).

Tube count8

2 launchers x 4 tubes.

Per-side salvo4 torpedoes

tube count / 2 (symmetric port/starboard launcher layout; common on cruisers and battleships with deck torpedoes).

Full-salvo damage114,664

tube count x per-torpedo simulated damage (all torpedoes hitting).

Per-side salvo damage57,332

per-side salvo x per-torpedo simulated damage.

AA defense

Close-range AA DPS104

Sum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (9×3.5×0.85) + (6×3.5×0.85) + (19×3.5×0.9) = 104. Covers AA-only mounts plus dual-purpose secondaries (Bismarck 105mm, USN 5"/38 cruiser secondaries) and dual-purpose main batteries (Sumner-class 5"/38, Akizuki-line 100mm). Formula validated against in-game captures on California, Sumner, Manfred von Richthofen, Dante Alighieri (exact) and within +/-17% on the remaining verified ships.

Maximum AA range5 km

Longest-reaching aura across AA-only + dual-purpose auras.

AA threat index367

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.

Near aura range2 km

Secondary battery dispersion

Secondary dispersion typeStandard

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

Max secondary dispersion @ 5 km315 m

5 km × 57 + 30 = 315 m.

Secondary battery firepower

Secondary DPM (per side)120,000

Sum across all secondary families of (per-side barrels × 60 / reload_s × alpha), where per-side barrels = mounts × barrels-per-mount / 2 (the guns that bear on one broadside target). Per-family: 4×2 102 mm (4/side) × 60/3 × 1500 = 120,000. Assumes every shell hits (real hit rate is lower; the Brawl matchup tool on the Compare page folds in dispersion + target armor).

Max HE alpha1500

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

Max HE fire chance6%

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

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.

Armor

Hull HP 27,100, distributed across 5 hull zones, each with its own plate thicknesses, saturation cap, and pen thresholds. HP caps are the exact in-game values, not estimated.

Section	Plates	HP cap	Threats	Tactic
Bow	20 mm primary (range 16–20 mm)	3,200 (12% of HP)	Overmatched by 305mm+ (Indefatigable, Toulon)Angle bounces 283mm20 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)	76 mm primary (range 25–76 mm)	20,300 (75% of HP)	No common caliber overmatches76 mm: most HE shatters, standard pen from 460mm+	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	32 mm primary (range 16–37 mm)	2,100 (8% of HP)	Overmatch not possible at T VIAngle bounces 410mm32 mm: HE pens from 203mm+	Mirror of bow. Same fast saturation.
Citadel	100 mm primary (range 10–100 mm)	≈ 165,500 (effectively no cap)	Citadel pen ×0.10 damageOver-pen: ×0.10 damage	Effectively no cap; citadel pool sits at ~165k HP on every ship. Damage is gated by pen/over-pen multipliers instead (×0.10 direct pen, ×0.10 over-pen).
Superstructure	10 mm primary (range 10–100 mm)	1,600 (6% 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	13,600 magazine HP	Magazine detonation1–30% chance · below ~75% HP	Per-turret powder-magazine HP. Detonation chance scales from 1% (no mag damage) to 30% (full mag damage); this range is the in-game value. Detonation can't roll while the ship is above ~75% HP (the standard detonation-protection threshold, not a per-ship stat). Smaller magazines saturate to the 30% ceiling 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 (20 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	8,100 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.

Shell ballistics chart

AP penetration, impact velocity, flight time and impact angle vs range. Click to load the interactive chart.

Exteriors

Skins & permanent camouflages

Every custom exterior Perth can equip, from in-game data.

DefaultThe ship’s standard exterior

Perth

Perth Community Stats