GamingDiver / WoWs Legends Ships / Chung Mu

World of Warships: Legends ship guide

Chung Mu

Also called: 忠武 Beta

Pan-Asia · Tier VIII · Destroyer · Tech Tree: Capital Ship Destroyers

Deep-water torpedo destroyerDeep-water torpedoes ignore destroyers; save them for cruisers and battleships.

Playstyle

Sit at the edge of a contested cap from concealment and cycle torpedo waves into lanes the enemy has to use - 10.5 km reach at 66 kt means the wall arrives before targets can react
Avoid: Holding 10.5-km torpedoes for a perfect shot

Key characteristics

Radar (7.5 km)SmokeTorp Reload BoosterEngine BoostFast turret traverseFragile

On this page

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

Community Data

Chung Mu Community Stats

Across 2,600+ Standard battles from 90 players, Chung Mu averages a 66% win rate, 60,900 damage and 1.2 kills per battle, and survives 53% of them.

Community Data

Chung Mu Community Stats

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

Playstyle

Overview

Chung Mu is a Tier VIII Pan-Asian torpedo destroyer. The kit is torpedo spam rather than gun trades: put fish into lanes the enemy has to cross and let the guns fill the gaps between reloads. Hers run deep and pass under destroyers, so a peer DD has to be answered with guns. Range 10.5 km. Standout traits: smoke duration in T8 DDs (30 s, 3rd of 22) and main battery range in T8 DDs (11.2 km, 5th of 28). The trade is hit points in T8 DDs (17,100 HP, 27th of 28).

Positioning

Sit at the edge of a contested cap from concealment and cycle torpedo waves into lanes the enemy has to use - 10.5 km reach at 66 kt means the wall arrives before targets can react. Drop on probable lanes from cover, stay unspotted between waves, and let the wall do the work. 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. Shooting from the cloud gives you away at 2.6 km, and a destroyer here is spotted at about 7 km, so you see it coming with roughly 4.5 km to spare. Vision is mutual: past the 2 km guaranteed ring you cannot see out either, but your own Radar (7.5 km) reads through it, so you can find targets instead of borrowing them. Enemy sonar (about 4.7 km) and radar (about 9 km) read straight in regardless. She is genuinely evasive in both phases of a turn, answering the helm in 3.9 s and carving a 620 m circle, so you can break a salvo and still be where you meant to go.

Potato Avoidance

Holding 10.5-km torpedoes for a perfect shot These torpedoes ignore the Destroyer class

The kit pays out by saturating lanes, not by waiting for guaranteed broadsides; missed waves still force rotations and protect your team's flank. Idle torpedo tubes are the worst output state. Aim torpedo drops ONLY at battleships, carriers, and most cruisers; every torp fired at a DD is wasted output.

Signature Traits

Deep-water torpedoes

Torps IGNORE the Destroyer class (deep-water mechanic); they pass under DDs and cannot hit them. Aim ONLY at battleships, carriers, and most cruisers; every torp fired at a DD is wasted, shared by 3/28 T8 DDs.

Surveillance Radar

7.5 km range, 17 s duration. Detects all enemy ships within a fixed radius regardless of line-of-sight. A short scan - long enough to break a smoke camp or call a target for the team, not to hold a cap.

Engine Boost

+8% speed (about +3 kt), 120 s duration. Engine Boost consumable lifts top speed enough to open or close a gap deliberately, though not to outrun a committed chase.

Long smoke deployment ↗

30 s smoke deployment window, top decile of the 22 T8 DDs with smoke. Lays a longer rolling smoke trail while moving.

ELITE TORPEDOES ↗

Big torpedo salvo · 10 tubes
Short torpedo warning · 4.5 s

Fragile HP pool ↗

17100 HP, bottom quartile of T8 DDs. Trade hits sparingly.

Acquisition

How to get Chung Mu

Chung Mu is available in the Capital Ship Destroyers branch of the Pan-Asia Tech Tree for 25,000,000 credits after researching it in the branch. Known module upgrades cost up to 6,250,000 credits.

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

Show Pan-Asia tech-tree branch diagram

Pan-Asia Tech Tree

Chung Mu sits in the Capital Ship Destroyers branch. The highlighted path shows the local branch context inside the full Pan-Asia tree.

7 ships in highlighted branch · scroll to inspect all Pan-Asia lines.

Pan-AsiaIIIIIIIVVVIVIIVIII★

Destroyer

Cruiser

Tier ★JinanPZSC110 Tier VIIIChung MuPZSD109 Tier VIIISejongPZSC109 Tier VIIHsienyangPZSD108 Tier VIIHarbinPZSC108 Tier VIGadjah MadaPZSD107 Tier VIChumphonPZSC107 Tier VFushunPZSD106 Tier VRahmatPZSC106 Tier IVJianweiPZSD105 Tier IVChungkingPZSC105 Tier IIIShenyangPZSD104 Tier IIPhra RuangPZSD103 Tier IShi AnPZSC102

Official WG availability sources

March Update: Seeing Green Tech tree line Start: 2023-03-02
- These will become researchable starting March 6, with the list including the following boats:
- Pan-Asian destroyer Chung Mu
Tier VIII Reinforcements Tech tree line Start: 2023-03-07
- Just like the previous Tier VIII ships, these will be available right away for Captains with researched Tier VII ships of the respective branches and sufficient XP on them.
- Pan-Asian Destroyer Chung Mu

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 Chung Mu 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.

Top 10%Displacement2,924 t (3/28) Top 10%Torpedo reaction time4.5 s (2/27) Top 25%Rudder shift3.9 s (6/28) Top 25%Turning circle620 m (5/28) Top 25%Main battery range11.19 km (5/28) Top 25%Torpedo damage≈17,833 (7/27) Bottom 25%Fires per minute4.2 (23/26) Bottom 25%AP DPM184,800 (22/26) Bottom 25%Main dispersion99 m (26/28) Bottom 10%Hit points17,100 HP (27/28)

See 32 mid-pack stats

Not standouts for Chung Mu -- 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 speed38 kt(9/28) Concealment6.93 km(13/28) Smoke fire bloom2.58 km(12/28) Air detection3.47 km(13/28) Main battery caliber127 mm(19/28) Main battery reload3.5 s(9/28) HE shell damage1,900(13/26) HE DPM159,600(14/26) AP shell damage2,200(19/26) AP velocity830 m/s(17/26) HE velocity830 m/s(15/26) Time to 90% speed16.8 s(18/28) Acceleration (0-12 kt)5 s(13/28) AP fuse timer0.01 s(14/26) AP arming threshold21 mm(13/26) Engine power60,000 hp(20/28) Power / turn radius96.8 hp/m(17/28) Power-to-weight20.52 hp/t(9/28) AP pen at 10 km69 mm(13/26) Effective HE DPM (incl. fire)194,028(16/26) AA DPS248(10/28) AA range5 km(17/28) AA threat860(13/28) Flak damage per salvo (expected)1,150(10/23) Torpedo range10.5 km(11/27) Torpedo speed66 kt(13/27) Torpedo reload117 s(15/27) NormAP ricochet start45°(19 of 26 tied at this value) NormAP auto-bounce angle60°(19 of 26 tied at this value) NormTurn speed retained81%(24 of 28 tied at this value) NormMax armor20 mm(24 of 28 tied at this value) NormCitadel belt20 mm(24 of 28 tied at this value)

Peers in this cohort

Compare Tier VIII Destroyers

Show all 27 peers

Stats & specs

Customize in the Build Tool →

Survivability

Hit PointsInitial: 14,800 → 17,100

Displacement2,924 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.

112.5 x 12.07 m

Armor range13–20 mm

Plate armor thicknesses13, 19, 20 mm

Armor material/layer entries23

Fire resistance

top hull: 1 − 0.6004 fire coefficient = 40%. 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.

40%

Fire duration30 s

Fire damage

One unattended fire: 0.003 of max HP per second (0.3%) × 30 s = 0.09 of the pool; 0.09 × 17,100 HP = 1,539 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: 0.0025 of max HP per second (0.25%) × 40 s = 0.1 of the pool; 0.1 × 17,100 HP = 1,710 HP on this ship.

0.25% of HP per second

Torp Reduction

1 − 0.333 hull torpedo-damage coefficient / 0.333 unprotected baseline = 0%. 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.

8,600

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.

5,100

Repairable: penetration50%

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 × 2,300 = 4,600), 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.

2,300

Casemate 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

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 × 12,800 = 25,600), 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.

12,800

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 × 1,100 = 2,200), 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.

1,100

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 × 1,700 = 3,400), 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.

1,700

Main Battery

These main guns are dual-purpose: they also fire at aircraft and feed the AA Defense card.

ModuleArtillery: 5×127 mm

Mounts / barrels5 mounts / 5 barrels

Reload time3.5 s

Firing range (base)10.2 km

Firing range (top fire control)11.2 km

Turret traverse34 °/s

Turret armor3 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.

±150°, ±148°, ±151°, ±153°, ±154°

Guns to bear

180° − 148° (the most restricted aft-facing mount's arc) = 32° off bow; 180° − 150° (the most restricted forward-facing mount's arc) = 30° 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.

32° off bow / 30° off stern

See the firing-arcs diagram ↓

Shell Grouping (σ)2

Dispersion type

In practice: the baseline curve for a standard destroyer -- at max range (11.2 km) shells land in an ellipse about 99 m wide and 59 m tall. Also on this curve (225): AL Avrora, AL Yukikaze, AL Z24, Acasta, Achilles, Adriatico, Aigle, Akatsuki, Akizuki, Albany, Allen M. Sumner, Attilio Regolo and 213 more.

Standard destroyer

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{11193.6}{30} \cdot \frac{8 - 0.5}{1000} + 0.5) \cdot 30 = 99 m

99 m at 11.2 km

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 at 11.2 km

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}

= 99 \cdot \frac{0.6}{2} = 29.7 m

29.7 m at 11.2 km

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}

= 59.4 \cdot \frac{0.6}{2} = 17.8 m

17.8 m at 11.2 km

Turret turn time

180 degrees / 34 deg/s traverse speed = 5.3 s.

5.3 s

Shells/min

Zero upgrades: 5 broadside guns x 60 / 3.571 s (3.5 s = 25 ticks) base reload = 84. All upgrades (Main Battery Mod. 3 = -10% reload): 5 broadside guns x 60 / 3.143 s (3.1 s = 22 ticks) all-upgrades reload (3.5 s × 0.9 Main Battery Mod. 3 = 3.1 s) = 95.5.

Initial: 84 → 95.5

HE shells

HE alpha1,900

HE Velocity830 m/s

Fire Chance5%

HE fire DPM vs T8 BB34428

Effective HE DPM vs T8 BB194028

HE penetration

21 mm ≈ 127 mm caliber / 6 (standard HE penetration ratio).

21 mm

HE full-salvo alpha

1,900 HE damage x 5 broadside guns = 9,500.

9,500

HE DPM

Zero upgrades: 9,500 HE full-salvo alpha x 60 / 3.571 s (3.5 s = 25 ticks) base reload = 159,600. All upgrades (Main Battery Mod. 3 = -10% reload): 9,500 HE full-salvo alpha x 60 / 3.143 s (3.1 s = 22 ticks) all-upgrades reload (3.5 s × 0.9 Main Battery Mod. 3 = 3.1 s) = 181,364.

Initial: 159,600 → 181,364

Fires/min

Zero upgrades: 84 shells/min × 0.05 (5% fire chance) = 4.2. All upgrades (Main Battery Mod. 3 = -10% reload): 95.5 shells/min × 0.05 (5% fire chance) = 4.77.

Initial: 4.2 → 4.77

AP shells

AP alpha2,200

AP Velocity830 m/s

Min Ricochet45 deg

Guaranteed Ricochet60 deg

Fuse Timer0.01 s

Fuse Threshold21 mm

AP overmatch

floor(127 mm caliber / 14.3) = 8 mm (AP auto-penetrates plating this thick or less).

8 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 2598 \cdot 25^{0.69} \cdot {0.127}^{- 1.07} \cdot 830^{1.38} = 232.5 mm

232.5 mm point-blank

AP Pen Far

Same formula at the ship's max firing range (11.2 km), where the shell has slowed to 315.4 m/s:

P = 10^{- 7} \cdot 2598 \cdot 25^{0.69} \cdot {0.127}^{- 1.07} \cdot {315.4}^{1.38} = 61.2 mm

61.2 mm at 11.2 km

AP full-salvo alpha

2,200 AP damage x 5 broadside guns = 11,000.

11,000

AP DPM

Zero upgrades: 11,000 AP full-salvo alpha x 60 / 3.571 s (3.5 s = 25 ticks) base reload = 184,800. All upgrades (Main Battery Mod. 3 = -10% reload): 11,000 AP full-salvo alpha x 60 / 3.143 s (3.1 s = 22 ticks) all-upgrades reload (3.5 s × 0.9 Main Battery Mod. 3 = 3.1 s) = 210,000.

Initial: 184,800 → 210,000

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: 533 mm Mk16 mod. 1

Launchers / tubes2 launchers × 5 tubes = 10 tubes

Reload time117 s

Projectile speed

Speed of the top torpedo module (all-upgrades configuration, 66.0 kt); the stock torpedo module runs 60.0 kt.

Initial: 60 kt → 66 kt

RangeInitial: 10 km → 10.5 km

Maximum simulated damage

Initial: 51,000 × 0.333 = 17,000 → 53,500 × 0.333 = 17,833 (warhead alpha × saturation coefficient, stock → upgraded torpedo). 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 = 53, 500 \cdot 0.333 = 17, 833

. 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.

Initial: ≈ 17,000 → ≈ 17,833

Maximum damage (ammunition)

53,500 warhead alpha / 3 + 1,200 blast = 19,033. 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.

19,033

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.

1,200

Torpedo detectability0.8 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{0.8 km}{66 kt \times 2.6855} = 4.5 s

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

4.5 s

Flooding chance

This torpedo carries a flooding-chance value of 3.95 per hit, shown as

3.95 \times 100 = 395 %

. 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.

395%

Torpedo launcher traverse25 °/s

Launch arcscentreline 250°

Torp Turn

Time to rotate the launchers 180 deg:

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

7.2 s

Torp Arming207 m

Deep-Water TorpedoesYes

Per-side salvo damage

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 10 x 17,833 = 178,330. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

178,330

AA Defense

AA mount points9

Maximum AA range

Longest-reaching family on the in-game AA card. Base AirDefense aura max range is 3.5 km; dual-purpose mount auras extend it.

5 km

20 mm Oerlikon Mk20Initial: 20 mm Oerlikon Mk4 (6×1) → 20 mm Oerlikon Mk20 (6×2)

40 mm Bofors Mk1Initial: 3×2 → 2×2 40mm

40 mm Bofors Mk2 (upgraded hull only)1×4 40mm

Gunsmain battery (DP)

Continuous DPS

Effective DPS in in-game units (raw aura damage × 3.5 × hit probability, summed per contributing aura) - matches the Close-range AA DPS headline's currency. Includes 80 from dual-purpose main battery firing as AA in this range band.

Range5 km

Guns40 mm Bofors Mk1 + 40 mm Bofors Mk2

Continuous DPS

Initial: 21 × 3.5 × 1 = 74 → 23 × 3.5 × 1 = 80. Raw aura damage × 3.5 × hit probability, the same in-game units as the Close-range AA DPS headline.

Initial: 74 → 80

Range3.5 km

Total DPS in Aura

Far 80 + Medium 80 = 160

160

Guns20 mm Oerlikon Mk20

Continuous DPS

Initial: 16 × 3.5 × 0.95 = 53 → 26 × 3.5 × 0.95 = 86. Raw aura damage × 3.5 × hit probability, the same in-game units as the Close-range AA DPS headline.

Initial: 53 → 86

Range2 km

Total DPS in Aura

Far 80 + Medium 80 + Near 86 = 246

246

AA explosions

Each ~2 s salvo fires 2 AA explosions in quick succession, each leaving 2 clouds ahead of the attacking squadron, plus 1 stray cloud farther out that appear off-beat between salvos - up to 5 clouds per salvo × 230 damage each. Planes that fly into a cloud take its damage; clouds dissipate before the next salvo lands. Defensive AA Fire, where fitted, multiplies the AA explosions within each salvo, and commander skills that raise the Number of AA explosions add to it.

2 per salvo, 2 clouds each + 1 outer cloud

Cloud damage

Damage a plane takes for flying into one flak cloud, before any reductions.

230

Cloud spawn chance

Every potential cloud spawns - the full pattern, every salvo. Often called flak 'hit chance', but spawned clouds always damage planes that fly into them - the roll is on spawning.

100%

Salvo interval

A new flak salvo (the AA explosions above) fires roughly every 2 s.

every ~2 s

Fired by

Flak keeps firing while at least one main battery mount is operational - even losing every dedicated AA mount does not stop it.

Main battery

Flak zone

The activation band: flak fires while attacking planes are inside it. Clouds are placed ahead of the planes' path, so clouds can land short of 2.5 km or past 5 km - once planes get inside the band, new salvos stop. AA range bonuses push the outer edge out; the 2.5 km inner edge does not move.

2.5-5 km

See the AA layers diagram ↓

Maneuverability

Engine power60,000 hp

Maximum speed38.0 kt

Turning circle radius620 m

Rudder shift timeInitial: 5.5 s → 3.9 s

Engine power-boost threshold7.0 kt

Engine spool-up time7.7 s

Reverse spool-up time3.8 s

Reverse speed

top speed / 4 + 4.9 = 38 / 4 + 4.9 = 14.4 kt. Base value; speed modifiers scale it.

14.4 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.

15.7 s

Engine boost threshold (reverse)

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

11.4 kt

Acceleration 0-90%

Time to reach 90% of top speed (34.2 kt of 38.0 kt).

16.8 s

Acceleration 0-99%

Time to reach 99% of top speed (37.6 kt of 38.0 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.

28.1 s

Guns in a full turn

With the rudder hard over the hull turns 8.2°/s, so a target drifts across the bow at that rate. Turret traverse minus hull turn: 34 − 8.2 = +25.8°/s, so the guns hold the target through the turn. Main Battery Mod. 2 (+20% traverse) and Mod. 3 (−15%) move this line.

hold target (+25.8°/s spare)

See the full acceleration curve ↓

Concealment

Detectability by sea

Base value, no camouflage. With a Grade IV permanent camo (or any disposable camo): 6.93 km x 0.955 = 6.62 km. Camouflage does not change detectability by air.

6.93 km

With Grade IV camouflage (sea)

Detectability by sea 6.93 km x 0.955 (Grade IV permanent camo or any disposable camo) = 6.62 km.

6.62 km

Detectability by air3.47 km

Smoke firing penalty2.58 km

Detect when firing (sea)

max(main battery range, sea detectability 6.93 km) = 11.19 km. Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach.

11.19 km

Detect when firing (air)

Air detectability 3.47 km + gun-firing bloom 2.54 km = 6.01 km. The bloom tracks main-battery caliber 127 mm × 0.020 = 2.54 km.

6.01 km

Detect when on fire (sea)

Sea detectability 6.93 km + 2.0 km while burning = 8.93 km.

8.93 km

Detect when on fire (air)

Air detectability 3.47 km + 3.0 km while burning = 6.47 km.

6.47 km

Guaranteed Detect2 km

✦

Consumables

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

Choose one

Smoke Generator4 charges · 120 s reload · 30 s emit / 70 s cloud active · 450 m radius

Surveillance Radar2 charges · 180 s reload · 17 s active · 7.5 km radar range
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{250 \times 30}{1000} = 7.5 km$

Engine Boost2 charges · 180 s reload · 120 s active · +8% speed bonus

Torpedo Reload Booster2 charges · 300 s reload · 1 s active · 8 s torpedo launchers reload time
ƒ
While active, torpedo tubes reload in this time instead of the full reload, letting you fire a second spread right after the first.

Module options (3)

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

HullUpgrade

Hit points14,800 → 17,100
Rudder shift5.5 → 3.9 s
Close-range AA DPS37 → 49

Fire controlUpgrade

Main battery range10,176 → 11193.6 m

TorpedoesUpgrade

Range9.99 → 10.5 km
Alpha damage51,000 → 53,500
Display damage17,000 → 17,833
Speed60 → 66 kt

Under the hood

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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 DDStandard

The standard destroyer dispersion curve.

Shell scatter width @ 5 km52.5 m

(166.7 × (8 − 0.5) / 1000 + 0.5) × 30 = 52.5 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 km90 m

(333.3 × (8 − 0.5) / 1000 + 0.5) × 30 = 90 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 km24.6 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  $delim \cdot R_{m a x} = 0.5 \cdot 11193.6 = 5597$  m, and  $radiusOnMax = 0.6$  at 11193.6 m. Below the kink:  $k = 0.2 + (0.5 - 0.2) \cdot \frac{5000}{5597} = 0.468$ , so  $σ_{V} = σ_{H} \cdot k = 52.5 \cdot 0.468 = 24.6 m$ .

Shell scatter height @ 10 km52.1 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  $delim \cdot R_{m a x} = 0.5 \cdot 11193.6 = 5597$  m, and  $radiusOnMax = 0.6$  at 11193.6 m. Above the kink:  $k = 0.5 + (0.6 - 0.5) \cdot \frac{10000 - 5597}{11193.6 - 5597} = 0.5787$ , so  $σ_{V} = σ_{H} \cdot k = 90 \cdot 0.5787 = 52.1 m$ .

AP pen 5 km123 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 2598 \cdot 25^{0.69} \cdot {0.127}^{- 1.07} \cdot {522.1}^{1.38} = 123 mm$ , where 522.1 m/s is the shell's speed when it arrives at 5 km (from 830 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 km69 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 2598 \cdot 25^{0.69} \cdot {0.127}^{- 1.07} \cdot {342.5}^{1.38} = 69 mm$ , where 342.5 m/s is the shell's speed when it arrives at 10 km (from 830 m/s at the muzzle). Fixed anchors make ships directly comparable at the same fighting distance; the Charts card plots the full curve.

HE flight time @ 10 km7.24 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.3 \cdot {0.127}^{2}}{8 \cdot 24.5} = 7.76 \times 10^{- 5}$ . That runs from a 830 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.

AP flight time @ 10 km7.16 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.3 \cdot {0.127}^{2}}{8 \cdot 25} = 7.6 \times 10^{- 5}$ . That runs from a 830 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)5

5 mounts × 1 barrels = 5; all 5 bear on the broadside.

Model inputs

Krupp (AP)2,598

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 mass25 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 coefficient0.3

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

AP muzzle velocity830 m/s

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

HE muzzle velocity830 m/s

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

idealRadius8

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

minRadius0.5

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 time4.5 s

800 m / (66.0 kt × 2.6855) = 4.5 s. detectability / (speed kt x 2.6855 m/s per knot on the game clock).

Torpedo speed66.0 kt

Travel time to max range59.2 s

10500 m / (66.0 kt × 2.6855) = 59.2 s. range / (speed kt x 2.6855 m/s per knot on the game clock).

Tube count10

2 launchers × 5 tubes.

Per-side salvo10 torpedoes

2 launchers × 5 tubes = 10, all to either side (centreline launchers train across - full salvo to either side).

Full-salvo damage178,330

All tubes hitting one target: tubes x per-torpedo simulated damage = 10 x 17,833 = 178,330. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

AA defense

AA DPS at max range81

Only families that reach 5 km contribute at the outer edge of the AA bubble. In-game families: 40mm Bofors Mk1 2x2 -> 54 DPS @ 3.5 km; 40mm Bofors Mk2 1x4 -> 27 DPS @ 3.5 km; 20mm Oerlikon MK20 Twin 6x2 -> 86 DPS @ 2 km; Far AA (?) -> 81 DPS @ 5 km.

AA DPS layered by range81 DPS @ 5 km, 162 DPS @ 3.5 km, 248 DPS @ 2 km

@ 5 km: 81 from one family; @ 3.5 km: 54 + 27 + 81 = 162; @ 2 km: 54 + 27 + 86 + 81 = 248. 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-blank248

54 + 27 + 86 + 81 = 248 DPS: the sum of every family's average DPS, achievable only inside the closest-range family (2 km).

AA threat index860

54 × 3.5 + 27 × 3.5 + 86 × 2 + 81 × 5 = 860. 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

Open in Charting Tool

Ship Charts

Background

A former U.S. Navy Fletcher-class destroyer (USS Erben, DD-631) that was transferred to the Republic of Korea Navy in 1963. The ship carried good armament and had enhanced AA capabilities.

Armor Beta

Hull HP 14,800 → 17,100 with hull upgrade, distributed across 5 hull zones, each with its own plate thicknesses, saturation cap, and pen thresholds.

Bow & stern19 mm

Overmatched by 134+ AP 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 Compare tool →

Section	Plates	HP cap	Threats	Tactic
Bow	19 mm primary (range 19–20 mm)	2,300 (13% of HP)	Overmatched by 283mm+ AP (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 mm	12,800 (75% of HP)	Overmatched by 283mm+ AP (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.
Stern	19 mm primary (range 13–20 mm)	1,700 (10% of HP)	Overmatched by 283mm+ AP (Scharnhorst '43, Schill)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.
Turret (module, per magazine)	separate HP pool, does not drain ship HP	8,600 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.
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	5,100 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.

Exteriors

Skins & permanent camouflages

Every custom exterior Chung Mu 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.

2023-03-02 · Patch notes March Update: Seeing Green Patch notes

Chung Mu

Chung Mu Community Stats

Chung Mu Community Stats

Chung Mu Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get Chung Mu

Builds

Cohort position

Peers in this cohort

Stats & specs

Under the hood

Main battery formulas

Model inputs

Torpedoes

AA defense

Ship Charts

Background

Armor Beta

Skins & permanent camouflages

Primary official WG sources

Signature Traits