GamingDiver / WoWs Legends Ships / Derzki

World of Warships: Legends ship guide

Derzki

Also called: 无理 · Дерзкий Beta

U.S.S.R. · Tier II · Destroyer · Tech Tree: Fiery Destroyers

Long-range gunboatOut-range peer DDs and kite cruisers; HE spam from open water.

Playstyle

Sit in open water at the edge of 10.2 km where peer DDs cannot return fire and most cruisers have to push to engage
Avoid: Idling beam-on in an obvious torpedo lane

Key characteristics

10.2 km gun rangeHigh fire chanceSmokeEngine BoostHigh HP poolEasily spotted

On this page

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

Community Data

Derzki Community Stats

Across 920+ Standard battles from 180+ players, Derzki averages a 58% win rate, 20,000 damage and 1.0 kills per battle, and survives 27% of them.

Community Data

Derzki Community Stats

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

Playstyle

Overview

Derzki is a Tier II Soviet long-range gunboat destroyer reaching 10.2 km: her guns out-reach peer DDs and most cruisers can be kited at the edge of her range. The kit is gun pressure from open water rather than cap contesting; the torpedoes are a backup, not the primary threat. Standout traits: high HP pool in T2 DDs (9,700 HP, 2nd of 23) and best HE fire chance in T2 DDs (7, 3rd of 23). The trade is surface detection in T2 DDs (6 km, 21st of 23).

Positioning

Sit in open water at the edge of 10.2 km where peer DDs cannot return fire and most cruisers have to push to engage. The kit is HE pressure from distance, not cap contesting; let your peer DDs take the cap while you kite the rotating cruisers and BBs that come to support it. 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 km, and a destroyer here is spotted at about 5.6 km, so you see it coming with roughly 3.6 km to spare. Vision is mutual: past the 2 km guaranteed ring you cannot see out either, and nothing in her kit sees through it, so pop the smoke where someone is already lighting the enemy or you will sit in it with nothing to shoot.

Potato Avoidance

Idling beam-on in an obvious torpedo lane

Unspotted is not unseen: once the enemy has reason to think a destroyer is holding this cap they will put torpedoes into the water you are probably in, and one fish the size of your own (5,367 damage against 9,700 HP) takes 55% of the ship. Keep way on, cross lanes bow or stern first, and never sit still beam-on to a chokepoint you would torpedo yourself.

Signature Traits

Engine Boost

+8% speed (about +2.7 kt), 120 s duration. Engine Boost consumable gives a small speed nudge - useful for closing a gap or steadying a torpedo run, not for running anything down.

ELITE MAIN BATTERY ↗

Long gun range · 10.2 km
High fire chance · 7%

High HP pool ↗

9700 HP, top decile of T2 DDs.

ELITE TORPEDOES ↗

Big torpedo salvo · 10 tubes
Short torpedo warning · 5.5 s

Easily spotted ↗

6 km surface detect, bottom decile of T2 DDs. Visible before you can react; position early.

Weak torpedoes ↗

5367 damage per torpedo, bottom quartile of T2 DDs.

Acquisition

How to get Derzki

Derzki is available in the Fiery Destroyers branch of the U.S.S.R. Tech Tree for 13,000 credits after researching it in the branch. Known module upgrades cost up to 2,600 credits.

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

Show U.S.S.R. tech-tree branch diagram

U.S.S.R. Tech Tree

Derzki sits in the Fiery Destroyers branch. The highlighted path shows the local branch context inside the full U.S.S.R. tree.

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

U.S.S.R.IIIIIIIVVVIVIIVIII★

Destroyer

Destroyer Split

Cruiser

Cruiser Split

Battleship

Carrier

Tier VIIINeustrashimyPRSD709 Tier VIIIDelnyPRSD410 Tier VIITashkentPRSD409 Tier VIIIPetropavlovskPRSC310 Tier IVSoobrazitelnyPRSD304 Tier VGorkyPRSC216 Tier IVKotovskyPRSC215 Tier VIIRigaPRSC209 Tier VITallinnPRSC208 Tier VIMinskPRSD207 Tier VGnevnyPRSD206 Tier IVPodvoiskyPRSD205 Tier ★KhabarovskPRSD110 Tier VIKievPRSD109 Tier VIIIDm. DonskoiPRSC109 Tier VIIISov. SoyuzPRSB109 Tier VIIChapayevPRSC108 Tier VIIVladivostokPRSB108 Tier VIIPobedaPRSA108 Tier VIIUdaloiPRSD107 Tier VIShchorsPRSC107 Tier VISinopPRSB107 Tier VBoevoiPRSD106 Tier VBudyonnyPRSC106 Tier VIzmailPRSB106 Tier VSerovPRSA106 Tier IVKirovPRSC105 Tier IVPyotr VelikiyPRSB105 Tier IIIIzyaslavPRSD104 Tier IIISvietlanaPRSC104 Tier IIIGangutPRSB104 Tier IIIKomsomoletsPRSA104 Tier IIDerzkiPRSD103 Tier IIBogatyrPRSC103 Tier INovikPRSC102

Official WG availability sources

Update: March 2020 Tech tree line Start: 2020-03-09
- If you don't care for Early Access, then simply wait for the next Update when these destroyers will become researchable and are set to be joined by Tier II Derzki and Tier VII Tashkent.
Update: April 2020 Tech tree line 2020-04-09
- Also don't forget that said destroyers, including the peculiar Tier II Derzki and the overgrown Tier VII Tashkent are now yours to research and acquire at your own pace!

Builds

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

Open in Build Tool →

Commanders frequently paired with this ship Anton Gurin Rumble Sergio Splendento

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

Hide ▾

Where Derzki sits among Tier II DDs (22 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.

BestMain battery range10.21 km (1/23) BestTorpedo reaction time5.5 s (1/23) Top 10%Hit points9,700 HP (2/23) Top 10%Torpedo reload22 s (3/23) Top 10%Max armor14 mm (3/23) Top 25%Fires per minute2.52 (5/23) Top 25%AP shell damage1,800 (6/21) Bottom 25%Concealment5.96 km (21/23) Bottom 25%Time to 90% speed16.1 s (19/23) Bottom 25%Acceleration (0-12 kt)5.2 s (19/23) Bottom 25%Displacement1,451 t (21/23) Bottom 25%Power-to-weight17.57 hp/t (20/23) Bottom 25%AA DPS10 (14/17) Bottom 25%Torpedo damage≈5,367 (21/23) Bottom 10%Torpedo range4.41 km (22/23) WorstAir detection2.98 km (23/23) WorstMain dispersion91.6 m (23/23) WorstAA range1 km (1 of 3 tied) WorstAA threat10 (1 of 3 tied)

See 20 mid-pack stats

Not standouts for Derzki -- 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 speed34 kt(13/23) Smoke fire bloom2 km(13/23) Rudder shift2.4 s(11/23) Turning circle510 m(17/23) Main battery caliber102 mm(11/23) Main battery reload5 s(11/23) HE shell damage1,500(9/23) HE DPM54,000(10/23) AP DPM64,800(7/21) AP velocity823 m/s(9/21) HE velocity823 m/s(11/23) AP arming threshold17 mm(10/21) Engine power25,500 hp(8/23) Power / turn radius50 hp/m(11/23) Torpedo speed54 kt(11/23) Citadel belt12 mm(7/23) NormAP fuse timer0.01 s(18 of 21 tied at this value) NormAP ricochet start45°(20 of 21 tied at this value) NormTurn speed retained81%(21 of 23 tied at this value) NormStern armor6 mm(21 of 23 tied at this value)

Peers in this cohort

Compare Tier II Destroyers

Show all 22 peers

Stats & specs

Customize in the Build Tool →

Survivability

Hit PointsInitial: 8,600 → 9,700

Displacement1,451 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.

94.4 x 9.3 m (ship-model figure)

Armor range4–14 mm

Plate armor thicknesses4, 6, 10, 11, 12, 14 mm

Armor material/layer entries26

Fire resistance

stock hull: 1 − 1 fire coefficient = 0%; top hull: 1 − 0.9667 fire coefficient = 3.3%. 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.

Initial: 0% → 3.3%

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 × 9,700 HP = 873 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 × 9,700 HP = 970 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.

4,900

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.

2,900

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 × 1,500 = 3,000), 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.

1,500

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 × 7,300 = 14,600), 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.

7,300

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 × 300 = 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 ×. 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.

300

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 × 1,100 = 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 ×. 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

Main Battery

ModuleArtillery: 102 mm/60 Model 1911

Mounts / barrels3 mounts / 3 barrels

Reload time5 s

Firing range (base)9.3 km

Firing range (top fire control)10.2 km

Turret traverse8 °/s

Turret armor6 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.

±156°, ±150°

Guns to bear

180° − 156° (the most restricted aft-facing mount's arc) = 24° 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.

24° 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 (10.2 km) shells land in an ellipse about 92 m wide and 55 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{10214.6}{30} \cdot \frac{8 - 0.5}{1000} + 0.5) \cdot 30 = 91.6 m

91.6 m at 10.2 km

Max Vert Disp

Vertical dispersion ellipse height at max range:

σ_{V} = σ_{H} \cdot radiusOnMax

= 91.6 \cdot 0.6 = 55 m

55 m at 10.2 km

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}

= 91.6 \cdot \frac{0.6}{2} = 27.5 m

27.5 m at 10.2 km

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}

= 55 \cdot \frac{0.6}{2} = 16.5 m

16.5 m at 10.2 km

Turret turn time

180 degrees / 8 deg/s traverse speed = 22.5 s.

22.5 s

Shells/min

3 broadside guns x 60 / 5 s base reload = 36.

HE shells

HE alpha1,500

HE Velocity823 m/s

Fire Chance7%

HE penetration

17 mm ≈ 102 mm caliber / 6 (standard HE penetration ratio).

17 mm

HE full-salvo alpha

1,500 HE damage x 3 broadside guns = 4,500.

4,500

HE DPM

4,500 HE full-salvo alpha x 60 / 5 s base reload = 54,000.

54,000

Fires/min

36 shells/min × 0.07 (7% fire chance) = 2.52.

2.52

AP shells

AP alpha1,800

AP Velocity823 m/s

Min Ricochet45 deg

Guaranteed Ricochet60 deg

Fuse Timer0.01 s

Fuse Threshold17 mm

AP overmatch

floor(102 mm caliber / 14.3) = 7 mm (AP auto-penetrates plating this thick or less).

7 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 1488 \cdot {17.5}^{0.69} \cdot {0.102}^{- 1.07} \cdot 823^{1.38} = 130.1 mm

130.1 mm point-blank

AP Pen Far

Same formula at the ship's max firing range (10.2 km), where the shell has slowed to 295.8 m/s:

P = 10^{- 7} \cdot 1488 \cdot {17.5}^{0.69} \cdot {0.102}^{- 1.07} \cdot {295.8}^{1.38} = 31.7 mm

31.7 mm at 10.2 km

AP full-salvo alpha

1,800 AP damage x 3 broadside guns = 5,400.

5,400

AP DPM

5,400 AP full-salvo alpha x 60 / 5 s base reload = 64,800.

64,800

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: 450 mm Twin Model 1913

Launchers / tubes5 launchers × 2 tubes = 10 tubes

Reload time22 s

Projectile speed

Speed of the top torpedo module (all-upgrades configuration, 54.0 kt); the stock torpedo module runs 49.0 kt.

Initial: 49 kt → 54 kt

RangeInitial: 4.02 km → 4.41 km

Maximum simulated damage

Initial: 16,600 × 0.333 = 5,533 → 16,100 × 0.333 = 5,367 (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 = 16, 100 \cdot 0.333 = 5, 367

. 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: ≈ 5,533 → ≈ 5,367

Maximum damage (ammunition)

16,100 warhead alpha / 3 + 550 blast = 5,917. 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.

5,917

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.

550

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}{54 kt \times 2.6855} = 5.5 s

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

5.5 s

Flooding chance

This torpedo carries a flooding-chance value of 0.96 per hit, shown as

0.96 \times 100 = 96 %

. 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.

96%

Torpedo launcher traverse25 °/s

Launch arcscentreline 234°, 258°

Torp Turn

Time to rotate the launchers 180 deg:

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

7.2 s

Torp Arming175 m

Per-side salvo damage

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 10 x 5,367 = 53,670. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

53,670

AA Defense

AA mount points2

Maximum AA range

Longest-reaching family on the in-game AA card. Base AirDefense aura max range is 1 km; dual-purpose mount auras extend it.

1 km

7.62 mm Maxim machine gun2×1 8mm

Guns7.62 mm Maxim machine gun

Continuous DPS

Effective DPS: 3 raw aura damage × 3.5 × 0.95 hit probability = 10 - the same in-game units as the Close-range AA DPS headline.

Range1 km

See the AA layers diagram ↓

Maneuverability

Engine power25,500 hp

Maximum speed34.0 kt

Turning circle radius510 m

Rudder shift timeInitial: 3.3 s → 2.4 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 = 34 / 4 + 4.9 = 13.4 kt. Base value; speed modifiers scale it.

13.4 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 s

Engine boost threshold (reverse)

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

9.5 kt

Acceleration 0-90%

Time to reach 90% of top speed (30.6 kt of 34.0 kt).

16.1 s

Acceleration 0-99%

Time to reach 99% of top speed (33.7 kt of 34.0 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.

26.8 s

Guns in a full turn

With the rudder hard over the hull turns 8.7°/s, so a target drifts across the bow at that rate. Turret traverse minus hull turn: 8 − 8.7 = -0.7°/s, so the guns fall behind and catch up once the turn eases. Main Battery Mod. 2 (+20% traverse) and Mod. 3 (−15%) move this line.

fall behind by 0.7°/s

See the full acceleration curve ↓

Concealment

Detectability by sea

Base value, no camouflage. With a Grade IV permanent camo (or any disposable camo): 5.96 km x 0.955 = 5.69 km. Camouflage does not change detectability by air.

5.96 km

With Grade IV camouflage (sea)

Detectability by sea 5.96 km x 0.955 (Grade IV permanent camo or any disposable camo) = 5.69 km.

5.69 km

Detectability by air2.98 km

Smoke firing penalty2 km

Detect when firing (sea)

max(main battery range, sea detectability 5.96 km) = 10.21 km. Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach.

10.21 km

Detect when firing (air)

Air detectability 2.98 km + gun-firing bloom 2.04 km = 5.02 km. The bloom tracks main-battery caliber 102 mm × 0.020 = 2.04 km.

5.02 km

Detect when on fire (sea)

Sea detectability 5.96 km + 2.0 km while burning = 7.96 km.

7.96 km

Detect when on fire (air)

Air detectability 2.98 km + 3.0 km while burning = 5.98 km.

5.98 km

Guaranteed Detect2 km

✦

Consumables

Damage Control Party∞ charges · 40 s reload · 10 s active

Smoke Generator2 charges · 240 s reload · 20 s emit / 69 s cloud active · 450 m radius

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 points8,600 → 9,700
Rudder shift3.3 → 2.4 s

Fire controlUpgrade

Main battery range9,286 → 10214.6 m

TorpedoesTrade-off

Range4.02 → 4.41 km
Alpha damage16,600 → 16,100
Display damage5,533 → 5,367
Speed49 → 54 kt

Under the hood

Show ▾

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 km25.9 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  $delim \cdot R_{m a x} = 0.5 \cdot 10214.6 = 5107$  m, and  $radiusOnMax = 0.6$  at 10214.6 m. Below the kink:  $k = 0.2 + (0.5 - 0.2) \cdot \frac{5000}{5107} = 0.4937$ , so  $σ_{V} = σ_{H} \cdot k = 52.5 \cdot 0.4937 = 25.9 m$ .

Shell scatter height @ 10 km53.6 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  $delim \cdot R_{m a x} = 0.5 \cdot 10214.6 = 5107$  m, and  $radiusOnMax = 0.6$  at 10214.6 m. Above the kink:  $k = 0.5 + (0.6 - 0.5) \cdot \frac{10000 - 5107}{10214.6 - 5107} = 0.5958$ , so  $σ_{V} = σ_{H} \cdot k = 90 \cdot 0.5958 = 53.6 m$ .

AP pen 5 km62 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 1488 \cdot {17.5}^{0.69} \cdot {0.102}^{- 1.07} \cdot {482.4}^{1.38} = 62 mm$ , where 482.4 m/s is the shell's speed when it arrives at 5 km (from 823 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 km32 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 1488 \cdot {17.5}^{0.69} \cdot {0.102}^{- 1.07} \cdot 301^{1.38} = 32 mm$ , where 301 m/s is the shell's speed when it arrives at 10 km (from 823 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 km7.28 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.33 \cdot {0.102}^{2}}{8 \cdot 17.5} = 7.7 \times 10^{- 5}$ . That runs from a 823 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 km7.84 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.3756 \cdot {0.102}^{2}}{8 \cdot 17.5} = 8.77 \times 10^{- 5}$ . That runs from a 823 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)3

3 mounts × 1 barrels = 3; all 3 bear on the broadside.

Model inputs

Krupp (AP)1,488

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 mass17.5 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 coefficient0.3756

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

AP muzzle velocity823 m/s

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

HE muzzle velocity823 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 time5.5 s

800 m / (54.0 kt × 2.6855) = 5.5 s. detectability / (speed kt x 2.6855 m/s per knot on the game clock).

Torpedo speed54.0 kt

Travel time to max range30.4 s

4410 m / (54.0 kt × 2.6855) = 30.4 s. range / (speed kt x 2.6855 m/s per knot on the game clock).

Tube count10

5 launchers × 2 tubes.

Per-side salvo10 torpedoes

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

Full-salvo damage53,670

All tubes hitting one target: tubes x per-torpedo simulated damage = 10 x 5,367 = 53,670. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

AA defense

AA DPS at max range10

Only families that reach 1 km contribute at the outer edge of the AA bubble. In-game families: MachineGunMaxim 7 62 2x1 -> 10 DPS @ 1 km.

AA DPS layered by range10 DPS @ 1 km

@ 1 km: 10 from one family. 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-blank10

10 = 10 DPS: the sum of every family's average DPS, achievable only inside the closest-range family (1 km).

AA threat index10

10 × 1 = 10. 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 km

Open in Charting Tool

Ship Charts

Background

The ship belonged to the first series of Russian destroyers to be equipped with turbines. Derzky boasted good survivability owing to her high speed combined with dimensions that were comparatively large for her time. She remained unrivaled in terms of the number of torpedoes she could launch in a broadside salvo until the very end of World War I.

Armor Beta

Hull HP 8,600 → 9,700 with hull upgrade, distributed across 5 hull zones, each with its own plate thicknesses, saturation cap, and pen thresholds.

Bow & stern6 mm

Overmatched by 105+ AP guns across the bracket. Can’t reliably bow-tank; gets bow-citadelled and overpenned.

Farming6 mm

Superstructure and extremities take HE pens and AP overpens from nearly any gun: steady chip damage. Fire resistance 3%, fires burn 30s. Range-by-range in the Compare tool →

Section	Plates	HP cap	Threats	Tactic
Bow	6 mm primary (range 4–14 mm)	1,500 (15% of HP)	Overmatched by 127mm+ AP (Farragut, Shenyang)6 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)	14 mm	7,300 (75% of HP)	Overmatched by 203mm+ AP (Furutaka)Angle bounces 152mm14 mm: HE pens from 127mm+	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	6 mm primary (range 6–14 mm)	1,100 (11% of HP)	Overmatched by 127mm+ AP (Farragut, Shenyang)6 mm: HE pens from 127mm+	Mirror of bow. Same fast saturation.
Citadel	12 mm primary (range 6–12 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	6 mm primary (range 6–14 mm)	300 (3% 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	4,900 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 (8 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	2,900 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 Derzki 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.

2020-03-09 · Patch notes Update: March 2020 Patch notes 2020-04-09 · Patch notes Update: April 2020 Patch notes

Derzki

Derzki Community Stats

Derzki Community Stats

Derzki Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get Derzki

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