World of Warships: Legends ship guide

Allen M. Sumner

Also called: 艾伦·M·萨姆纳 Beta
Gunboat destroyerDamage from sustained main-battery pressure, not torpedo dumps.
Playstyle
  • Hold mid-cap distance and lean into gunboat trades from cover where the peer destroyer cannot match you…
  • Avoid: Trading guns in open water against peer DDs
Key characteristics
Long torps (12 km)SmokeEngine BoostSharp rudderBow-tankerHeavy belt
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Community Data

Allen M. Sumner Community Stats

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Playstyle

Overview

Allen M. Sumner is a Tier VIII American gunboat destroyer: her damage comes from sustained main battery pressure on caps and open-water trades. Torpedoes are a secondary threat for closing lanes, not her main damage. Standout traits: top-decile lingering smoke in T8 DDs (124 s) and top-decile sharp rudder in T8 DDs (3.1 s).

Positioning

Hold mid-cap distance and lean into gunboat trades from cover where the peer destroyer cannot match your fires-per-minute. Avoid open-water duels with ships running smoke or radar; your damage is mostly gunfire, and gunfire from cover wins more than from blue water. Your guns lose penetration at range, so aim AP at broadsides you can still citadel and put HE into superstructures and upper-hull sections, rather than the bow-in or belt armor your shells bounce and shatter on.

Potato Avoidance

Trading guns in open water against peer DDs

Your damage is sustained main-battery pressure from cover (the torpedoes are a secondary threat), so open-water duels just stack incoming HE on you while you fire back.

Signature Traits

Engine Boost

+8% speed, 120 s duration. Engine Boost consumable temporarily raises top speed. Mobility on demand to reposition, chase a kill, or break contact.

Lingering smoke

124.0 s smoke cloud linger, top decile of T8 DDs. Each puff stays up longer after you stop laying it, holding the shield.

Sharp rudder

3.1 s rudder shift, top decile of T8 DDs. Snappy weave.

ELITE ARMOR
  • Bow-tanker
  • Heavy belt
Acquisition

How to get Allen M. Sumner

Allen M. Sumner is available in the Universal Destroyers branch of the U.S. Tech Tree for 25,000,000 credits after researching it in the branch. Known module upgrades cost up to 5,000,000 credits.

Show U.S.A. tech-tree branch diagram
U.S. Tech Tree

Allen M. Sumner sits in the Universal Destroyers branch. The highlighted path shows the local branch context inside the full U.S. tree.

U.S. destroyers are "jacks-of-all-trades" and masters of none. They can perform in nearly any role needed from a destroyer: spotting the enemy, showering them in fire-starting shells, or unleashing torpedoes.
Advantages
Adaptable, Long-duration Smoke Generator
Disadvantages
Lackluster torpedo armament, Low-velocity shells

Builds Beta

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Cohort position

Hide

Where Allen M. Sumner sits among Tier VIII DDs (27 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.

BestRudder shift3.1 s (1 of 2 tied) Top 25%Traverse-to-turn ratio14.41 × (7/27) Top 25%Main dispersion89.1 m (7/27) Top 25%Displacement3,218 t (7/27) Top 25%Torpedo range12 km (6/26) Bottom 25%Hit points18,000 HP (23/27) Bottom 25%Fires per minute5 (21/26) Bottom 25%Torpedo reload145 s (22/26)
See 28 mid-pack stats

Not standouts for Allen M. Sumner -- 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 speed36.5 kt(13/27) Concealment7.12 km(21/27) Air detection3.56 km(21/27) Main battery caliber127 mm(18/27) Main battery range10.87 km(20/27) Main battery reload3.6 s(14/27) HE shell damage1,900(11/26) HE DPM190,000(12/26) AP shell damage2,200(17/25) AP DPM220,000(15/25) AP velocity830 m/s(15/25) HE velocity830 m/s(15/26) Acceleration17.7 s(15/27) AP fuse timer0.01 s(14/25) AP arming threshold21 mm(11/25) Engine power60,000 hp(19/27) Turn-speed retention96.8 hp/m(17/27) Power-to-weight18.65 hp/t(17/27) AA DPS244(11/27) AA range5 km(15/27) AA threat825(16/27) Torpedo damage≈16,700(11/26) Torpedo speed66 kt(12/26) NormAP ricochet start45°(19 of 25 tied at this value) NormAP auto-bounce angle60°(19 of 25 tied at this value) NormMax armor20 mm(23 of 27 tied at this value) NormCitadel belt20 mm(23 of 27 tied at this value) NormBow armor19 mm(26 of 27 tied at this value)
Survivability
Hit PointsInitial: 15,500 → 18,000
Displacement3,218 t
Armor range13–20 mm
Plate armor thicknesses13, 19, 20 mm
Armor material/layer entries22
Fire resistance40%
Fire duration30 s
Torp Reduction0%
Main Battery
ModuleArtillery: 127 mm Mk38 mod. 0
Mounts / barrels3 mounts / 6 barrels
Reload time4 s
Firing range (base)9.9 km
Firing range (top fire control)10.9 km
Turret traverse25 °/s
Shell Grouping (σ)2
Max Horiz Disp
ƒHorizontal dispersion ellipse width at max range, from the verified WoWS dispersion model: σH=(R30·idealRadiusminRadiusidealDistance+minRadius)·30 =(988230·80.51000+0.5)·30=89.1m
89.1 m
Max Vert Disp
ƒVertical dispersion ellipse height at max range: σV=σH·radiusOnMax =89.1·0.6=53.5m
53.5 m
Med Horiz Disp
ƒ50%-hit horizontal radius: σH,50=σH·GetHalfHitsRatio(σ) =89.1·0.32(σ=2)=28.5m
28.5 m
Med Vert Disp
ƒ50%-hit vertical radius: σV,50=σV·GetHalfHitsRatio(σ) =53.5·0.32(σ=2)=17.1m
17.1 m
Turret turn time
ƒ180 degrees / 25 deg/s traverse speed = 7.2 s.
7.2 s
Base shells/min
ƒ6 broadside guns x 60 / 4 s base reload = 90.
90
HE shells
HE Damage1,900 → 2,000
HE Velocity830 m/s
Fire Chance5%
HE penetration
ƒ21 mm ≈ 127 mm caliber / 6 (standard HE penetration ratio).
21 mm
HE full-salvo alpha
ƒ2,000 HE damage x 6 broadside guns = 12,000.
12,000
Base HE DPM
ƒ12,000 HE full-salvo alpha x 60 / 4 s base reload = 180,000.
180,000
Installed HE DPM
ƒ12,000 HE full-salvo alpha x 60 / 3.6 s installed reload (Main Battery Mod. 3 = -10%) = 200,000.
200,000
Base fires/min
ƒ90 shells/min x 5% fire chance = 4.5.
4.5
AP shells
AP Damage2,200 → 2,300
AP Velocity830 m/s
Min Ricochet45 deg
Guaranteed Ricochet60 deg
Fuse Timer0.01 s
Fuse Threshold21 mm
AP overmatch
ƒfloor(127 mm caliber / 14.3) = 8 mm (AP auto-penetrates plating this thick or less).
8 mm
AP Pen Close
ƒCanonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: P=107·K·m0.69·d1.07·v01.38 =107·2598·250.69·0.1271.07·8301.38=232.5mm. Matches the in-game spec card.
232.5 mm
AP Pen Far
ƒSame formula at the ship's max firing range (13.6 km), where the shell has slowed to 279.7 m/s: P=107·2598·250.69·0.1271.07·279.71.38=51.8mm.
51.8 mm
AP full-salvo alpha
ƒ2,300 AP damage x 6 broadside guns = 13,800.
13,800
Base AP DPM
ƒ13,800 AP full-salvo alpha x 60 / 4 s base reload = 207,000.
207,000
Installed AP DPM
ƒ13,800 AP full-salvo alpha x 60 / 3.6 s installed reload (Main Battery Mod. 3 = -10%) = 230,000.
230,000
AP AOE Radius
ƒAP 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.
10
Torpedoes
ModuleTorpedoes: 533 mm quintuple
Launchers / tubes2 launchers × 5 tubes = 10 tubes
Reload time145 s
Projectile speed66 kt
Range12 km
Maximum simulated damage
ƒEstimate 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: Dsim=α·c=50,100·0.333=16,700.
≈ 16,700
Torpedo detectability1.4 km
Flooding chance301%
Torpedo launcher traverse25 °/s
Torp Turn
ƒTime to rotate the launchers 180 deg: tturn=180°25°/s=7.2s.
7.2 s
Torp Arming204 m
Per-side salvo damage
ƒOne side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 10 x 16,700 = 167,000.
167,000
AA Defense
AA mount points14
Close-range AA DPS
ƒSum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (30×3.5×1) + (24×3.5×0.95) + (17×3.5×1) = 244. 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.
244
Maximum AA range
ƒLongest-reaching aura across AA-only + dual-purpose auras.
5 km
40 mm Bofors Mk12×2 40mm
40 mm Bofors Mk22×4 40mm
20 mm Oerlikon Mk410×1 20mm
Far aura
DPS
ƒIncludes 17 continuous AA damage from dual-purpose main battery firing as AA in this range band.
17
Range5 km
Medium aura
DPS30
Range3.5 km
Total DPS in Aura
ƒFar 17 + Medium 30 = 47
47
Near aura
DPS24
Range2 km
Total DPS in Aura
ƒFar 17 + Medium 30 + Near 24 = 71
71
Maneuverability
Engine moduleEngine: 60,000 hp
Engine power60,000 hp
Maximum speed36.5 kt
Turning circle radius620 m
Rudder shift time3.1 s
Engine power-boost threshold7 kt
Engine spool-up time7.7 s
Reverse spool-up time3.8 s
Acceleration 0-90%
ƒTime to reach 90% of top speed (32.9 kt of 36.5 kt), from our in-house acceleration model.
17.7 s
Acceleration 0-99%
ƒTime to reach 99% of top speed (36.1 kt of 36.5 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.
30.3 s
Traverse-to-turn ratio
ƒHow many degrees the turret can swing for each degree the hull turns. Turn rate ωhull=180π·Vmax(m/s)Rturn=180π·36.5·0.5144620=1.74°/s, so ratio=ωturretωhull=251.74=14.4×. Below 5 the turrets drag in a turning fight; 25+ keeps up with any rudder.
14.4× snappy
Concealment
Detectability by sea7.12 km
Detectability by air3.56 km
Smoke firing penalty2.65 km
Detect after firing main guns
ƒmax(base sea detectability, gun-firing bloom range). Firing never pulls your detection closer than base concealment.
7.12 km
Detect Fire Sea9.12 km
Detect Fire Air6.56 km
Guaranteed Detect2 km
Consumables
Damage Control Party∞ charges · 40 s reload · 5 s active
Smoke Generator2 charges · 240 s reload · 28 s emit / 124 s cloud active
Engine Boost2 charges · 180 s reload · 120 s active · +8% speed bonus
Module options (3)

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

HullUpgrade
  • Hit points15,500 → 18,000
  • Rudder shift5 → 4 s
Fire controlUpgrade
  • Main battery range9,882 → 10870.2 m
TorpedoesUpgrade
  • Range9.15 → 12 km
  • Reload150 → 145 s
  • Alpha damage46,600 → 50,100
  • Display damage15,533 → 16,700
  • Speed55 → 66 kt

See all derived stats

Show

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
Max Horiz Disp89.1 m
Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model: $\sigma_H = \left(\dfrac{R}{30}\cdot\dfrac{\text{idealRadius}-\text{minRadius}}{\text{idealDistance}} + \text{minRadius}\right)\cdot 30$ $= \left(\dfrac{9882}{30}\cdot\dfrac{8-0.5}{1000} + 0.5\right)\cdot 30 = 89.1\,\text{m}$
Max Vert Disp53.5 m
Vertical dispersion ellipse height at max range: $\sigma_V = \sigma_H \cdot \text{radiusOnMax}$ $= 89.1 \cdot 0.6 = 53.5\,\text{m}$
Med Horiz Disp28.5 m
50%-hit horizontal radius: $\sigma_{H,50} = \sigma_H \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 89.1 \cdot 0.32\;(\sigma = 2) = 28.5\,\text{m}$
Med Vert Disp17.1 m
50%-hit vertical radius: $\sigma_{V,50} = \sigma_V \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 53.5 \cdot 0.32\;(\sigma = 2) = 17.1\,\text{m}$
AP Pen Close232.5 mm
Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: $P = 10^{-7}\cdot K \cdot m^{0.69} \cdot d^{-1.07} \cdot v_0^{1.38}$ $= 10^{-7}\cdot 2598 \cdot 25^{0.69} \cdot 0.127^{-1.07} \cdot 830^{1.38} = 232.5\,\text{mm}$. Matches the in-game spec card.
AP Pen Far51.8 mm
Same formula at the ship's max firing range (13.6 km), where the shell has slowed to 279.7 m/s: $P = 10^{-7}\cdot 2598 \cdot 25^{0.69} \cdot 0.127^{-1.07} \cdot 279.7^{1.38} = 51.8\,\text{mm}$.
HE penetration21 mm
21 mm ≈ 127 mm caliber / 6 (standard HE penetration ratio).
AP overmatch8 mm
floor(127 mm caliber / 14.3) = 8 mm (AP auto-penetrates plating this thick or less).
AP AOE Radius10
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 alpha6
All 6 barrels bear on the broadside.
Turret turn time7.2 s
180 degrees / 25 deg/s traverse speed = 7.2 s.
HE full-salvo alpha12,000
2,000 HE damage x 6 broadside guns = 12,000.
AP full-salvo alpha13,800
2,300 AP damage x 6 broadside guns = 13,800.
Base HE DPM180,000
12,000 HE full-salvo alpha x 60 / 4 s base reload = 180,000.
Base AP DPM207,000
13,800 AP full-salvo alpha x 60 / 4 s base reload = 207,000.
Installed HE DPM200,000
12,000 HE full-salvo alpha x 60 / 3.6 s installed reload (Main Battery Mod. 3 = -10%) = 200,000.
Installed AP DPM230,000
13,800 AP full-salvo alpha x 60 / 3.6 s installed reload (Main Battery Mod. 3 = -10%) = 230,000.
Base shells/min90
6 broadside guns x 60 / 4 s base reload = 90.
Installed shells/min100
6 broadside guns x 60 / 3.6 s installed Artillery reload = 100.
Base fires/min4.5
90 shells/min x 5% fire chance = 4.5.
Installed fires/min5
100 shells/min x 5% fire chance = 5.

Torpedoes

Torpedo detectability1.4 km
Estimated torpedo reaction time8.2 s
detectability / (speed kt x 2.6 community game-speed factor).
Torpedo speed66 kt
Travel time to max range69.9 s
range / (speed kt x 2.6 community game-speed factor).
Tube count10
2 launchers x 5 tubes.
Per-side salvo10 torpedoes
10 (centerline launchers train across - full salvo to either side).
Full-salvo damage167,000
All tubes hitting one target: tubes x per-torpedo simulated damage = 10 x 16,700 = 167,000.
Per-side salvo damage167,000
One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 10 x 16,700 = 167,000.

AA defense

Close-range AA DPS244
Sum across every AA aura on this ship of (aura.continuous_damage x 3.5 x aura.hit_probability). Here: (30×3.5×1) + (24×3.5×0.95) + (17×3.5×1) = 244. 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 index825
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 15,50018,000 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.

Bow & stern19 mm

Overmatched by 129+ guns across the bracket. Can’t reliably bow-tank; gets bow-citadelled and overpenned.

Farming19 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
Bow19 mm primary (range 19–20 mm)2,300 (13% of HP)
Overmatched by 283mm+ (Scharnhorst '43, Schill)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 mm13,900 (77% of HP)
Overmatched by 283mm+ (Scharnhorst '43, Schill)Angle bounces 203mm19 mm: HE pens from 127mm+
Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern19 mm primary (range 19–20 mm)1,700 (9% of HP)
Overmatched by 283mm+ (Scharnhorst '43, Schill)Angle bounces 203mm19 mm: HE pens from 127mm+
Mirror of bow. Same fast saturation.
Citadel20 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.
Turret (module, per magazine)separate HP pool, does not drain ship HP9,300 magazine HPMagazine detonation1–30% chance · below ~75% HPPer-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 HP200 per-mount HPDestroyed at 0 HPPer-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 HP5,600 module HPIncapacitated at 0 HPWhen 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.
Open the 3D armor viewer →
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Acceleration and Ballistics Chart

Balance History

Balance updates affecting Allen M. Sumner. Cards are condensed; use each source link for full context.

Nerf ×5Main Battery ×1Torpedo ×1Concealment ×3
2023-11-02

MINISTRY OF BALANCE REPORTS: A FLURRY OF CHANGES

  • Upgraded main battery reload time increased from 3.0 to 3.5 s.
  • Upgraded torpedo range reduced from 16.5 to 12 km.
  • Detectability range by sea increased from 7.04 to 7.12 km.
  • Detectability range by air increased from 3.52 to 3.56 km.
  • Detectability while firing in smoke increased from 2.62 to 2.65 km.
Read the full official post
Exteriors

Skins & permanent camouflages

Every custom exterior Allen M. Sumner can equip, from in-game data.

  • Allen M. Sumner default exterior
    DefaultThe ship’s standard exterior

Primary official WG sources

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