GamingDiver / WoWs Legends Ships / Attilio Regolo

World of Warships: Legends ship guide

Attilio Regolo

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Italy · Tier ★ · Destroyer · Tech Tree: Attilio Regolo

Destroyer gunboatWin DD duels and cap fights with gun DPM.

Playstyle

Hold concealment edges on the contested cap at 7.4 km detection
Avoid: Burning the 7.4 km concealment advantage on guns

Key characteristics

Long torps (14 km)2 sigma accuracyEngine BoostSluggish rudder

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Community stats
Playstyle
How to get Attilio Regolo
Builds
Cohort position
Stats and specs
Armor
3D armor viewer
Exteriors

Community Data

Attilio Regolo Community Stats

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Playstyle

Overview

Attilio Regolo is a Legendary Italian stealth-leaning destroyer with strong surface detection (7.4 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 high HP pool in Legendary DDs (26,800 HP) and top-decile torpedo reload in Legendary DDs (80 s).

Positioning

Hold concealment edges on the contested cap at 7.4 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 7.4 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

Engine Boost

+25% speed, 25 s duration. Engine Boost consumable temporarily raises top speed. Mobility on demand to reposition, chase a kill, or break contact.

High HP pool

26800.0 HP, best of Legendary DDs.

Fast torp reload

80.0 s torpedo reload, top decile of Legendary DDs. More frequent drops than peers.

Heavy powerplant

110000.0 hp engine, top decile of Legendary DDs. More headroom for accelerating out of stops and maintaining speed in turns.

Sluggish rudder

5.7 s rudder shift, bottom decile of Legendary DDs. Hard to dodge incoming AP; lean on island cover.

Easily spotted

7.4 km surface detect, bottom decile of Legendary DDs. Visible before you can react; position early.

Acquisition

How to get Attilio Regolo

Attilio Regolo is available in the Attilio Regolo branch of the Italy Tech Tree for 48,750,000 credits after researching it in the branch.

Show Italy tech-tree branch diagram

Italy Tech Tree

Attilio Regolo sits in the Attilio Regolo branch. The highlighted path shows the local branch context inside the full Italy tree.

1 ships in highlighted branch · scroll to inspect all Italy lines.

ItalyIIIIIIIVVVIVIIVIII★

Destroyer

Cruiser

Battleship

Tier ★Attilio RegoloPISD110 Tier ★VeneziaPISC110 Tier ★Cristoforo ColomboPISB110 Tier VIIIAdriaticoPISD109 Tier VIIIBrindisiPISC109 Tier VIIILepantoPISB109 Tier VIIVittorio CunibertiPISD108 Tier VIIAmalfiPISC108 Tier VIIVittorio VenetoPISB108 Tier VILuca TarigoPISD107 Tier VIZaraPISC107 Tier VIFrancesco CaraccioloPISB107 Tier VAvierePISD106 Tier VTrentoPISC106 Tier VAndrea DoriaPISB106 Tier IVMaestralePISD105 Tier IVMontecuccoliPISC105 Tier IVCavourPISB105 Tier IIITurbinePISD104 Tier IIIGiussanoPISC104 Tier IIIDante AlighieriPISB104 Tier IINazario SauroPISD103 Tier IITarantoPISC103 Tier INino BixioPISC102

Builds Beta

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

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Cohort position

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Where Attilio Regolo sits among Legendary DDs (12 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.

BestHit points26,800 HP (1/12) BestTorpedo reload80 s (1/12) Top 10%Engine power110,000 hp (2/11) Top 10%Turn-speed retention142.9 hp/m (2/11) Top 25%Max speed41 kt (4/12) Top 25%Main battery caliber135 mm (4/12) Top 25%Main battery range11.2 km (4/12) Top 25%Fires per minute8.64 (4/12) Top 25%HE velocity875 m/s (3/12) Top 25%Torpedo range13.5 km (3/12) Bottom 25%Stealth profile7.4 km / 3.79 km (11/12 / 11/12) Bottom 25%Rudder shift5.7 s (11/12) Bottom 25%Acceleration19.1 s (10/11) Bottom 25%AA threat681 (11/12) Bottom 25%Torpedo damage≈12,900 (10/12) Bottom 25%Torpedo speed56 kt (11/12) WorstDisplacement5,420 t (12/12) WorstAA range3.7 km (12/12)

See 11 mid-pack stats

Not standouts for Attilio Regolo -- 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.

Traverse-to-turn ratio9.56 ×(9/12) Main battery reload5 s(8/12) HE shell damage1,950(5/12) HE DPM187,200(6/12) Main dispersion99 m(9/12) Power-to-weight20.3 hp/t(6/11) AA DPS217(8/12) NormSigma2(11 of 12 tied at this value) NormMax armor20 mm(10 of 12 tied at this value) NormCitadel belt20 mm(8 of 10 tied at this value) NormDeck armor19 mm(6 of 8 tied at this value)

Peers in this cohort

Show all 10 peers

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Stats & specs

Customize in the Build Tool →Shell ballistics chart

Survivability

Hit Points26,800

Displacement5,420 t

Armor range13–20 mm

Plate armor thicknesses13, 19, 20 mm

Armor material/layer entries22

Fire resistance40%

Fire duration30 s

Torp Reduction0%

Magazine HP

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.

13,400

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.

8,000

Main Battery

ModuleArtillery: 135 mm/45 OTO 1938

Mounts / barrels4 mounts / 8 barrels

Reload time5.5 s

Firing range11.2 km

Turret traverse15 °/s

Shell Grouping (σ)

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

Max Horiz Disp

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

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

= (\frac{11200}{30} \cdot \frac{8 - 0.5}{1000} + 0.5) \cdot 30 = 99 m

99 m

Max Vert Disp

Vertical dispersion ellipse height at max range:

σ_{V} = σ_{H} \cdot radiusOnMax

= 99 \cdot 0.6 = 59.4 m

59.4 m

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot GetHalfHitsRatio (σ)

= 99 \cdot 0.319 (σ = 2) = 31.6 m

31.6 m

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot GetHalfHitsRatio (σ)

= 59.4 \cdot 0.32 (σ = 2) = 19 m

19 m

Turret turn time

180 degrees / 15 deg/s traverse speed = 12 s.

12 s

Base shells/min

8 broadside guns x 60 / 5.5 s base reload = 87.3.

87.3

HE shells

HE Damage1,950

HE Velocity875 m/s

Fire Chance9%

HE penetration

23 mm ≈ 135 mm caliber / 6 (standard HE penetration ratio).

23 mm

HE full-salvo alpha

1,950 HE damage x 8 broadside guns = 15,600.

15,600

Base HE DPM

15,600 HE full-salvo alpha x 60 / 5.5 s base reload = 170,182.

170,182

Installed HE DPM

15,600 HE full-salvo alpha x 60 / 5 s installed reload (Main Battery Mod. 3 = -10%) = 187,200.

187,200

Base fires/min

8 HE shells x 60 / 5.5 s reload x 9% fire chance = 7.85.

7.85

SAP shells

SAP Damage2,750

SAP Velocity875 m/s

SAP Pen (mm)38

AP shells

Min Ricochet60 deg

Guaranteed Ricochet75 deg

Fuse Timer0.03 s

Fuse Threshold25 mm

AP overmatch

floor(135 mm caliber / 14.3) = 9 mm (AP auto-penetrates plating this thick or less).

9 mm

Torpedoes

ModuleTorpedoes: 533 mm tubo lanciasiluri

Launchers / tubes2 launchers × 4 tubes = 8 tubes

Reload time80 s

Projectile speed56 kt

Range13.5 km

Maximum simulated damage

Estimate of WG's in-game value; matches the in-game port screen within ±5%. Saturation: most targets only intersect one hull section, so the sim transfers ~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 = 38, 700 \cdot 0.333 = 12, 900

≈ 12,900

Torpedo detectability1 km

Flooding chance230%

Torpedo launcher traverse25 °/s

Torp Turn

Time to rotate the launchers 180 deg:

t_{turn} = \frac{180 °}{25 ° / s} = 7.2 s

7.2 s

Torp Arming173 m

Per-side salvo damage

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 8 x 12,900 = 103,200.

103,200

AA Defense

AA mount points12

Close-range AA DPS

Sum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (22×3.5×1) + (22×3.5×1) + (19×3.5×0.95) = 217. 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.

217

Maximum AA range

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

3.7 km

65 mm/64 19394×1 65mm

37 mm/54 Breda 19394×1 37mm

20 mm/70 Breda 19414×6 20mm

DPS22

Range3.7 km

DPS22

Range3.5 km

Total DPS in Aura

Outer Medium 22 + Inner Medium 22 = 44

DPS19

Range2 km

Total DPS in Aura

Outer Medium 22 + Inner Medium 22 + Near 19 = 63

Maneuverability

Engine moduleEngine: 110,000 hp

Engine power110,000 hp

Maximum speed41 kt

Turning circle radius770 m

Engine power-boost threshold7 kt

Acceleration 0-90%

Time to accelerate from 0 kt to 90% of top speed (36.9 kt of 41). Numerical integration of the WoWS engine model with the inputs decoded for this ship:

maxPower = {(\frac{P}{m})}^{0.42} = {(\frac{110, 000}{5, 420})}^{0.42} = 3.5408

;

d r a g (v) = - \frac{v | v |}{V_{max}^{2}} \cdot maxPower

; piecewise acceleration

a (v) = {\begin{matrix} maxPower \cdot 2 + d r a g (v) & v < 7 kt \\ P (t) + d r a g (v) & v \geq 7 kt \end{matrix}

; the engine ramps over

τ = \frac{T_{up}}{2.61} = \frac{20}{2.61} = 7.7 s

. Euler step

v_{n + 1} = v_{n} + a (v_{n}) Δ t, Δ t = 0.01 s

until

t_{90} = min {t : v (t) \geq 0.9 V_{max}} = 19.1 s

. The 0.42 exponent, quadratic drag and the TimeScale 2.61 are the calibrated game constants (New York's 60/2.61 = 23.0 s spool-up matches in-game); no closed form.

19.1 s

Acceleration 0-99%

Time to accelerate from 0 kt to 99% of top speed (40.6 kt of 41). Same integration as the 0-90% row, read where

t_{99} = min {t : v (t) \geq 0.99 V_{max}} = 32.7 s

. 99% (not 100%) because exact top speed is asymptotic - thrust equals drag at

V_{max}

, so the last fraction of a knot is never quite gained.

32.7 s

Traverse-to-turn ratio

How many degrees the turret can swing for each degree the hull turns. Turn rate

ω_{hull} = \frac{180}{π} \cdot \frac{V_{max} (m/s)}{R_{turn}} = \frac{180}{π} \cdot \frac{41.0 \cdot 0.5144}{770} = 1.57 ° / s

, so

ratio = \frac{ω_{turret}}{ω_{hull}} = \frac{15}{1.57} = 9.6 \times

. Below 5 the turrets drag in a turning fight; 25+ keeps up with any rudder.

9.6× ok

Concealment

Detectability by sea7.4 km

Detectability by air3.79 km

Smoke firing penalty2.97 km

Detect after firing main guns

max(base sea detectability, gun-firing bloom range). Firing never pulls your detection closer than base concealment.

7.4 km

Detect Fire Sea9.4 km

Detect Fire Air6.79 km

Guaranteed Detect2 km

✦

Consumables

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

Exhaust Smoke Generator4 charges · 80 s reload · 15 s emit / 10 s cloud active

Engine Boost4 charges · 120 s reload · 25 s active · +25% speed bonus

See all derived stats

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

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 Disp99 m

Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model: $\sigma_H = \left(\dfrac{R}{30}\cdot\dfrac{\text{idealRadius}-\text{minRadius}}{\text{idealDistance}} + \text{minRadius}\right)\cdot 30$ $= \left(\dfrac{11200}{30}\cdot\dfrac{8-0.5}{1000} + 0.5\right)\cdot 30 = 99\,\text{m}$

Max Vert Disp59.4 m

Vertical dispersion ellipse height at max range: $\sigma_V = \sigma_H \cdot \text{radiusOnMax}$ $= 99 \cdot 0.6 = 59.4\,\text{m}$

Med Horiz Disp31.6 m

50%-hit horizontal radius: $\sigma_{H,50} = \sigma_H \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 99 \cdot 0.319\;(\sigma = 2) = 31.6\,\text{m}$

Med Vert Disp19 m

50%-hit vertical radius: $\sigma_{V,50} = \sigma_V \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 59.4 \cdot 0.32\;(\sigma = 2) = 19\,\text{m}$

HE penetration23 mm

23 mm ≈ 135 mm caliber / 6 (standard HE penetration ratio).

AP overmatch9 mm

floor(135 mm caliber / 14.3) = 9 mm (AP auto-penetrates plating this thick or less).

Broadside guns used for alpha8

All 8 barrels bear on the broadside.

Turret turn time12 s

180 degrees / 15 deg/s traverse speed = 12 s.

HE full-salvo alpha15,600

1,950 HE damage x 8 broadside guns = 15,600.

Base HE DPM170,182

15,600 HE full-salvo alpha x 60 / 5.5 s base reload = 170,182.

Installed HE DPM187,200

15,600 HE full-salvo alpha x 60 / 5 s installed reload (Main Battery Mod. 3 = -10%) = 187,200.

Base shells/min87.3

8 broadside guns x 60 / 5.5 s base reload = 87.3.

Installed shells/min96

8 broadside guns x 60 / 5 s installed Artillery reload = 96.

Base fires/min7.85

8 HE shells x 60 / 5.5 s reload x 9% fire chance = 7.85.

Installed fires/min8.64

8 HE shells x 60 / 5 s installed reload x 9% fire chance = 8.64.

Torpedoes

Torpedo detectability1 km

Estimated torpedo reaction time6.9 s

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

Torpedo speed56 kt

Travel time to max range92.7 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 damage103,200

All tubes hitting one target: tubes x per-torpedo simulated damage = 8 x 12,900 = 103,200.

Per-side salvo damage103,200

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 8 x 12,900 = 103,200.

AA defense

Close-range AA DPS217

Sum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (22×3.5×1) + (22×3.5×1) + (19×3.5×0.95) = 217. 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 range3.7 km

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

AA threat index681

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

Armor Beta

Hull HP 26,800, 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.

Bow & stern19 mm

Overmatched by 70+ guns across the bracket. Can’t reliably bow-tank; gets bow-citadelled and overpenned.

Farming13 mm

Superstructure and extremities take HE pens and AP overpens from nearly any gun: steady chip damage. Fire resistance 40%, fires burn 30s. Range-by-range in the ballistics tool →

Section	Plates	HP cap	Threats	Tactic
Bow	19 mm primary (range 19–20 mm)	2,700 (10% of HP)	Overmatched by 283mm+ (Gouden Leeuw)Angle bounces 203mm19 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)	19 mm	20,100 (75% of HP)	Overmatched by 283mm+ (Gouden Leeuw)Angle bounces 203mm19 mm: HE pens from 127mm+	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	19 mm primary (range 19–20 mm)	2,700 (10% of HP)	Overmatched by 283mm+ (Gouden Leeuw)Angle bounces 203mm19 mm: HE pens from 127mm+	Mirror of bow. Same fast saturation.
Citadel	20 mm primary (range 13–20 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	13 mm primary (range 13–19 mm)	2,700 (10% 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	13,400 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 (65 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	8,000 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.

Approximated side profile.

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Exteriors

Skins & permanent camouflages

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

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.

2026-05-28 · Patch notes June Update: The Ages Betwixt Patch notes