Acasta Build & Guide | WoWs Legends

Playstyle

Overview

Acasta is a Tier IV British stealth-leaning destroyer with strong surface detection (6 km). The kit opens detection windows most peer DDs cannot match, so her value is contesting caps from concealment edges where the detection band holds. Standout traits: best smoke duration in T4 DDs (20 s) and top-decile torpedo alpha in T4 DDs (15,733).

Positioning

Hold concealment edges on the contested cap at 6 km detection. The band opens windows for unspotted torpedo drops and clean repositions; lean into the gaps your peer DDs cannot read, and back out before detection closes.

Potato Avoidance

Burning the 6 km concealment advantage on guns

Every salvo lights you up and gives back the detection edge that makes the kit work; reserve guns for finishing damage on already-spotted ships, and prioritize torpedo drops you can fire while undetected.

Signature Traits

Long-burning smoke

20.0 s Smoke Generator duration, best of T4 DDs. Holds the smoke shield longer.

Heavy torpedoes

15733.0 damage per torpedo, top decile of T4 DDs.

High-arc HE shells

38.4° HE impact angle at max range, top decile of T4 DDs. Lobs over cover.

High-arc howitzer

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

Slow torp reload

106.0 s torpedo reload, worst of T4 DDs. Long wait between drops.

Acquisition

How to get Acasta

Acasta is available in the Dueling Destroyers branch of the U.K. Tech Tree for 500,000 credits after researching it in the branch. Known module upgrades cost up to 125,000 credits.

Show U.K. tech-tree branch diagram

U.K. Tech Tree

Acasta sits in the Dueling Destroyers branch. The highlighted path shows the local branch context inside the full U.K. tree.

8 ships in highlighted branch · scroll to inspect all U.K. lines.

U.K.IIIIIIIVVVIVIIVIII★

Destroyer

Cruiser

Cruiser Split

Battleship

Battleship Split

Carrier

Tier VRenownPBSB547 Tier VIIVanguardPBSB508 Tier VIIIDrakePBSC209 Tier VIIIDuncanPBSB209 Tier VIIAlbemarlePBSC208 Tier VIIHawkePBSB208 Tier VISurreyPBSC207 Tier VIRookePBSB207 Tier VDevonshirePBSC206 Tier IVHawkinsPBSC205 Tier IVTigerPBSB205 Tier IIIHermesPBSA204 Tier VIIITemerairePBSB112 Tier ★DaringPBSD110 Tier ★MinotaurPBSC110 Tier ★ConquerorPBSB110 Tier VIIIJutlandPBSD109 Tier VIIINeptunePBSC109 Tier VIILightningPBSD108 Tier VIIEdinburghPBSC108 Tier VIIImplacablePBSA108 Tier VIJervisPBSD107 Tier VIFijiPBSC107 Tier VIKing George VPBSB107 Tier VIcarusPBSD106 Tier VLeanderPBSC106 Tier VQueen ElizabethPBSB106 Tier VFuriousPBSA106 Tier IVAcastaPBSD105 Tier IVEmeraldPBSC105 Tier IVIron DukePBSB105 Tier IIIWakefulPBSD104 Tier IIIDanaePBSC104 Tier IIIOrionPBSB104 Tier IIValkyriePBSD103 Tier IICaledonPBSC103 Tier IWeymouthPBSC102

Builds Beta

Build for concealment, torpedo reload, smoke utility, speed, and survivability.

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Cohort position

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Where Acasta sits among Tier IV DDs (21 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.

Top 10%Acceleration9.7 s (3/21) Top 10%Torpedo damage15,733 (2/21) Top 25%Main battery reload4.5 s (5/21) Top 25%Fires per minute4.27 (4/21) Top 25%AP arming threshold20 mm (5/19) Top 25%Displacement1,747 t (6/21) Bottom 25%Hit points11,200 HP (17/21) Bottom 25%Max speed35 kt (17/21) Bottom 25%HE shell damage1,700 (17/21) Bottom 25%Engine power34,000 hp (17/21) Bottom 25%AA range2.5 km (17/21) WorstTorpedo reload106 s (21/21) WorstMax armor10 mm (1 of 10 tied) WorstCitadel belt10 mm (1 of 10 tied) WorstEnd plates10 mm (1 of 10 tied / 1 of 10 tied)

See 22 mid-pack stats

Not standouts for Acasta -- 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.

Concealment5.98 km(10/21) Air detection2.99 km(11/21) Rudder shift3.8 s(10/21) Traverse-to-turn ratio5.23 ×(10/21) Main battery caliber120 mm(16/21) Main battery range9.94 km(11/21) HE fire chance8%(11/21) HE DPM90,667(8/21) AP shell damage2,100(13/19) AP DPM112,000(8/19) Main dispersion82.7 m(7/21) AP velocity808 m/s(11/19) HE velocity808 m/s(13/21) Turn-speed retention63 hp/m(15/21) Power-to-weight19.46 hp/t(13/21) AA DPS48(12/21) AA threat103(12/21) Torpedo range6 km(15/21) Torpedo speed59 kt(13/21) NormSigma2(20 of 21 tied at this value) NormAP fuse timer0.01 s(15 of 19 tied at this value) NormDeck armor10 mm(10 of 19 tied at this value)

Peers in this cohort

Show all 20 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.

Smoke

Survivability

Hit PointsInitial: 9,500 → 11,200

Displacement1,747 t

Armor range10–10 mm

Plate armor thicknesses10 mm

Armor material/layer entries24

Fire resistanceInitial: 13.3% → 16.6%

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.

5,600

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.

3,400

Main Battery

ModuleArtillery: 120 mm/45 QF Mk IX

Mounts / barrels4 mounts / 4 barrels

Reload time5 s

Firing range (base)9 km

Firing range (top fire control)9.9 km

Turret traverse10 °/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 = (9032/30·(8−0.5)/1000 + 0.5)·30 = 82.7 m

82.7 m

Max Vert Disp

ƒ

Vertical dispersion ellipse height at max range = max horizontal × radiusOnMax = 82.7 × 0.6 = 49.6 m

49.6 m

Med Horiz Disp

ƒ

50%-hit horizontal radius = max horizontal × GetHalfHitsRatio(σ) = 82.7 × 0.319 (σ=2) = 26.4 m

26.4 m

Med Vert Disp

ƒ

50%-hit vertical radius = max vertical × GetHalfHitsRatio(σ) = 49.6 × 0.321 (σ=2) = 15.9 m

15.9 m

Turret turn time

ƒ

180 degrees / 10 deg/s traverse speed = 18 s.

18 s

Base shells/min

ƒ

4 broadside guns x 60 / 5 s base reload = 48.

48

HE shells

HE Damage1,700

HE Velocity808 m/s

Fire Chance8%

HE penetration

ƒ

20 mm ≈ 120 mm caliber / 6 (standard HE penetration ratio).

20 mm

HE full-salvo alpha

ƒ

1,700 HE damage x 4 broadside guns = 6,800.

6,800

Base HE DPM

ƒ

6,800 HE full-salvo alpha x 60 / 5 s base reload = 81,600.

81,600

Base fires/min

ƒ

4 HE shells x 60 / 5 s reload x 8% fire chance = 3.84.

3.84

AP shells

AP Damage2,100

AP Velocity808 m/s

Min Ricochet45 deg

Guaranteed Ricochet60 deg

Fuse Timer0.01 s

Fuse Threshold20 mm

AP overmatch

ƒ

floor(120 mm caliber / 14.3) = 8 mm (AP auto-penetrates plating this thick or less).

8 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 × 2396 × 22.68^0.69 × 0.12^-1.07 × 808^1.38 = 205.3 mm. Matches the in-game spec card.

205.3 mm

AP Pen Far

ƒ

Same formula at the ship's max firing range (12.4 km), where the shell has slowed to 238.5 m/s: 1e-7 × 2396 × 22.68^0.69 × 0.12^-1.07 × 238.5^1.38 = 38.1 mm.

38.1 mm

AP full-salvo alpha

ƒ

2,100 AP damage x 4 broadside guns = 8,400.

8,400

Base AP DPM

ƒ

8,400 AP full-salvo alpha x 60 / 5 s base reload = 100,800.

100,800

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.

8

◇

Torpedoes

ModuleTorpedoes: 533 mm Mk VII

Launchers / tubes2 launchers × 4 tubes = 8 tubes

Reload time106 s

Projectile speed59 kt

Range6 km

Maximum simulated damage14,633 (est.)

Alpha damage43,900

Torpedo detectability1.2 km

Torpedo launcher traverse25 °/s

Torp Turn7.2 s

Torp Arming182 m

Per-side salvo damage

ƒ

per-side salvo x per-torpedo simulated damage.

117,064

AA Defense

AA mount pointsInitial: 2 → 4

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: (10×3.5×1) + (4×3.5×0.95) = 48. 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.

48

Maximum AA range

ƒ

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

2.5 km

40 mm/39 Vickers QF Mk.II on a Mk.II HA mount2×1 40mm

12.7 mm Mk III (upgraded hull only)2×4 13mm

DPSInitial: 7 → 10

Range2.5 km

DPS4

Range1.2 km

Total DPS in Aura

ƒ

Medium 10 + Near 4 = 14

14

Maneuverability

Engine moduleEngine: 34,000 hp

Engine power34,000 hp

Maximum speed35 kt

Turning circle radius540 m

Engine power multiplier speed threshold32.5 kt

Traverse-to-turn ratio5.2× slow

Concealment

Detectability by sea5.98 km

Detectability by air2.99 km

Smoke firing penalty2.15 km

Detect after firing main guns5.98 km

Detect Fire Sea7.98 km

Detect Fire Air5.99 km

Guaranteed Detect2 km

✦

Consumables

Damage Control Party∞ charges · 40 s reload · 5 s active

Smoke Generator6 charges · 60 s reload · 20 s emit / 40 s cloud active

Module options (3)

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

HullUpgrade

Hit points9,500 → 11,200
Rudder shift5.3 → 3.8 s
AA mounts2 → 4
Close-range AA DPS7 → 14

Fire controlUpgrade

Main battery range9,032 → 9935.2 m

TorpedoesTrade-off

Reload95 → 106 s
Alpha damage33,200 → 43,900
Display damage11,067 → 14,633

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 Disp82.7 m

Horizontal dispersion ellipse width at max range. (R/30·(idealRadius−minRadius)/idealDistance + minRadius)·30 = (9032/30·(8−0.5)/1000 + 0.5)·30 = 82.7 m

Max Vert Disp49.6 m

Vertical dispersion ellipse height at max range = max horizontal × radiusOnMax = 82.7 × 0.6 = 49.6 m

Med Horiz Disp26.4 m

50%-hit horizontal radius = max horizontal × GetHalfHitsRatio(σ) = 82.7 × 0.319 (σ=2) = 26.4 m

Med Vert Disp15.9 m

50%-hit vertical radius = max vertical × GetHalfHitsRatio(σ) = 49.6 × 0.321 (σ=2) = 15.9 m

Dispersion familyDD Disp.

Standard destroyer dispersion baseline.

AP Pen Close205.3 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 × 2396 × 22.68^0.69 × 0.12^-1.07 × 808^1.38 = 205.3 mm. Matches the in-game spec card.

AP Pen Far38.1 mm

Same formula at the ship's max firing range (12.4 km), where the shell has slowed to 238.5 m/s: 1e-7 × 2396 × 22.68^0.69 × 0.12^-1.07 × 238.5^1.38 = 38.1 mm.

HE penetration20 mm

20 mm ≈ 120 mm caliber / 6 (standard HE penetration ratio).

AP overmatch8 mm

floor(120 mm caliber / 14.3) = 8 mm (AP auto-penetrates plating this thick or less).

AP AOE Radius8

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 alpha4

All 4 barrels bear on the broadside.

Turret turn time18 s

180 degrees / 10 deg/s traverse speed = 18 s.

HE full-salvo alpha6,800

1,700 HE damage x 4 broadside guns = 6,800.

AP full-salvo alpha8,400

2,100 AP damage x 4 broadside guns = 8,400.

Base HE DPM81,600

6,800 HE full-salvo alpha x 60 / 5 s base reload = 81,600.

Base AP DPM100,800

8,400 AP full-salvo alpha x 60 / 5 s base reload = 100,800.

Base shells/min48

4 broadside guns x 60 / 5 s base reload = 48.

Base fires/min3.84

4 HE shells x 60 / 5 s reload x 8% fire chance = 3.84.

Torpedoes

Torpedo detectability1.2 km

Estimated torpedo reaction time7.8 s

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

Torpedo speed59 kt

Travel time to max range39.1 s

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

Tube count8

2 launchers x 4 tubes.

Per-side salvo8 torpedoes

8 (centerline launchers train across - full salvo to either side).

Full-salvo damage117,064

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

Per-side salvo damage117,064

per-side salvo x per-torpedo simulated damage.

AA defense

Close-range AA DPS48

Sum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (10×3.5×1) + (4×3.5×0.95) = 48. 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 range2.5 km

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

AA threat index103

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 range1.2 km

Armor

Hull HP 9,500 → 11,200 with hull upgrade, 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	10 mm	1,600 (14% of HP)	Overmatched by 150mm+ (De Ruyter, Karlsruhe)Angle bounces 127mm10 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.
Stern	10 mm	1,200 (11% of HP)	Overmatched by 150mm+ (De Ruyter, Karlsruhe)Angle bounces 127mm10 mm: HE pens from 127mm+	Mirror of bow. Same fast saturation.
Citadel	10 mm	≈ 165,500 (effectively no cap)	Citadel pen ×0.50 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 (×0.50 direct pen, ×0.10 over-pen).
Superstructure	10 mm	600 (5% 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	5,600 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.
AA mount (40 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	3,400 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 Acasta can equip, from in-game data.

DefaultThe ship’s standard exterior

Acasta

Acasta Community Stats