GamingDiver / WoWs Legends Ships / Marblehead FE

World of Warships: Legends ship guide

Marblehead FE

Also called: 马布尔黑德 FE Beta

U.S.A. · Tier IV · CL Cruiser · Premium · Marblehead Variant

HE fire-spam cruiserAn HE damage-farmer with Sonar to clear islands and smoke before committing the hull.

Playstyle

Work the islands rather than a firing line
Avoid: Pushing in blind because the kit says brawler

Key characteristics

Long torps (8.2 km)High HE / fire outputHigh AP DPMSonarFast turret traverseWeak AA

On this page

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

Community Data

Marblehead FE Community Stats

Across 1,000+ Standard battles from 9 players, Marblehead FE averages a 61% win rate, 39,400 damage and 1.3 kills per battle, and survives 32% of them.

Community Data

Marblehead FE Community Stats

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

Playstyle

Overview

Marblehead FE is a Tier IV American light cruiser whose 152mm guns bring 8.2 fires a minute (1st of 20), with Sonar as her vision tool: it lets her contest islands and smoke without exposing the hull. Her sonar reaches 3.7 km, which is the range at which she can commit to a contest without guessing. Both shells run cohort-strong (top-decile AP at 212,571 AP DPM and cohort-best HE at 150,857 HE DPM), making her a dual-threat gunship: keep AP up against broadsides and citadels, and switch to HE against bow-in ships, superstructures, and the thin or angled targets AP over-penetrates or bounces off. Standout traits: torpedo reload in T4 CAs (38 s, 1st of 21) and turret traverse rate in T4 CAs (10, 6th of 23). The trade is AA DPS in T4 CAs (13, 23rd of 23).

Positioning

Work the islands rather than a firing line. Sonar (3.7 km on ships, 2.7 km on torpedoes) is the whole kit, and it only pays inside that radius, so hold the cover beside a contested cap and use it to catch destroyers and torpedoes coming around the corner: HE into the destroyer, AP into any cruiser that shows you a broadside while it sits in smoke. Firing from a friendly smoke reveals you at 5.2 km, so pick the salvo rather than holding the trigger. 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. The helm answers quickly (5.8 s), so she can break an incoming salvo that slower hulls have to eat.

Potato Avoidance

Pushing in blind because the kit says brawler

3.7-km Sonar is what makes the close fight winnable, and it only helps once you are already committed; it does not tell you what is waiting two islands over. Push when a destroyer is lit or a teammate holds vision, not to find out who is there.

Signature Traits

ELITE MAIN BATTERY ↗

HE DPM machine · 150857 HE
AP DPM machine · 212571 AP
High fire pressure · 8.23 fires/min
Fast turret traverse · 10°/s
Flat arc HE shells · 914 m/s
Fire-starter cruiser

Fast torp reload ↗

38 s torpedo reload, top decile of T4 CAs. More frequent drops than peers.

Weak AA ↗

13 AA DPS, bottom decile of T4 CAs. Aircraft chew through with impunity; lean on positioning over AA.

Weak torpedoes ↗

5533 damage per torpedo, bottom decile of T4 CAs.

Acquisition

How to get Marblehead FE

Marblehead FE is a Premium ship and not available to unlock in the Tech Tree. Acquisition path: Bundle.

BundleAvailable as a launch bundle (Founder Edition).

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

Official WG availability sources

GamingDiver (Greg, firsthand) Bundle
- Founder Edition ships were sold as bundles when WoWS Legends launched.

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 AL Baltimore AL Montpelier Captain Janeway

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 Marblehead FE sits among Tier IV CAs (23 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.

BestFires per minute8.23 (1 of 2 tied) BestHE DPM150,857 (1 of 2 tied) BestEffective HE DPM (incl. fire)210,408 (1 of 2 tied) BestTorpedo reload38 s (1/21) Top 10%Main battery reload7 s (3/23) Top 10%AP DPM212,571 (3/23) Top 25%Rudder shift5.8 s (5/23) Top 25%AP velocity914 m/s (5/23) Top 25%HE velocity914 m/s (5/20) Top 25%Power / turn radius150 hp/m (6/23) WorstNo secondaries (7 of 23 in cohort) WorstAA DPS13 (1 of 2 tied) WorstAA threat46 (1 of 2 tied) WorstFlak damage per salvo (expected)216 (1 of 3 tied) WorstTorpedo damage≈5,533 (1 of 2 tied) WorstTorpedo speed49 kt (21/21) WorstEnd plates10 mm (1 of 5 tied / 1 of 4 tied)

See 29 mid-pack stats

Not standouts for Marblehead FE -- 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.

Hit points27,000 HP(7/23) Max speed34 kt(13/23) Concealment11.14 km(15/23) Smoke fire bloom5.15 km(10/23) Air detection6.68 km(14/23) Turning circle600 m(7/23) Main battery caliber152 mm(13/23) Main battery range13.38 km(17/23) HE shell damage2,200(11/20) HE fire chance12%(9/20) AP shell damage3,100(11/23) Main dispersion125.3 m(7/23) Time to 90% speed23.7 s(12/23) Acceleration (0-12 kt)8.5 s(12/23) AP fuse timer0.025 s(13/23) AP arming threshold25 mm(10/23) Engine power90,000 hp(13/23) Displacement9,297 t(15/23) Power-to-weight9.68 hp/t(11/23) AP pen at 10 km86 mm(18/23) AA range3.5 km(17/23) Torpedo range8.22 km(7/21) Torpedo reaction time7.6 s(11/21) Max armor76 mm(15/23) Citadel belt76 mm(8/23) NormSigma2(21 of 23 tied at this value) NormAP ricochet start45°(21 of 23 tied at this value) NormAP auto-bounce angle60°(21 of 23 tied at this value) NormTurn speed retained81%(22 of 23 tied at this value)

Peers in this cohort

Compare Tier IV Cruisers

Show all 23 peers

Stats & specs

Customize in the Build Tool →

Survivability

Hit Points27,000

Displacement9,297 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.

170 x 19.2 m (ship-model figure)

Armor range6–76 mm

Plate armor thicknesses6, 10, 13, 15, 21, 25, 37, 38, 76 mm

Armor material/layer entries36

Fire resistance

top hull: 1 − 0.8335 fire coefficient = 16.6%. 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.

16.6%

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 × 27,000 HP = 2,430 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 × 27,000 HP = 2,700 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.

13,500

Steering gear HP

Durability of the steering gears. As this pool drops, hits are likelier to jam the rudder; unlike most modules the steering can be knocked out and repaired but is never permanently destroyed.

8,100

Repairable: penetration50%

Repairable: citadel10%

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 × 3,500 = 7,000), 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.

3,500

Auxiliary section HP

Damage saturation pool for the auxiliary room: 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

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 × 20,300 = 40,600), 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.

20,300

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 × 1,300 = 2,600), 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.

1,300

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 × 1,900 = 3,800), 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.

1,900

Citadel 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

Main Battery

ModuleArtillery: 152 mm Mk13/Mk16

Mounts / barrels10 mounts / 12 barrels

Reload time7 s

Firing range13.4 km

Turret traverse10 °/s

Turret armor25 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°, 155° arc, 146° arc, ±145°, 2x 153° arc, 2x 145° arc, 2x 149° arc

Guns to bear

180° − 150° (the most restricted aft-facing mount's arc) = 30° off bow; 180° − 145° (the most restricted forward-facing mount's arc) = 35° 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.

30° off bow / 35° off stern

Shell Grouping (σ)2

Dispersion type

In practice: the baseline curve for a standard cruiser -- at max range (13.4 km) shells land in an ellipse about 125 m wide and 75 m tall. Also on this curve (215): AL Baltimore, AL Chapayev, AL Cheshire, AL Harbin, AL Montpelier, AL Tallinn, AL Zara, Aberdeen, Accord, Agano, Albemarle, Algérie and 203 more.

Standard cruiser

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{13376}{30} \cdot \frac{8 - 1.1}{1000} + 1.1) \cdot 30 = 125.3 m

125.3 m at 13.4 km

Max Vert Disp

Vertical dispersion ellipse height at max range:

σ_{V} = σ_{H} \cdot radiusOnMax

= 125.3 \cdot 0.6 = 75.2 m

75.2 m at 13.4 km

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}

= 125.3 \cdot \frac{0.6}{2} = 37.6 m

37.6 m at 13.4 km

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}

= 75.2 \cdot \frac{0.6}{2} = 22.6 m

22.6 m at 13.4 km

Turret turn time

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

18 s

Shells/min

8 broadside guns x 60 / 7 s base reload = 68.6.

68.6

HE shells

HE alpha2,200

HE Velocity914 m/s

Fire Chance12%

HE fire DPM vs T4 BB59540

Effective HE DPM vs T4 BB210397

HE penetration

25 mm ≈ 152 mm caliber / 6 (standard HE penetration ratio).

25 mm

HE full-salvo alpha

2,200 HE damage x 8 broadside guns = 17,600.

17,600

HE DPM

17,600 HE full-salvo alpha x 60 / 7 s base reload = 150,857.

150,857

Fires/min

68.6 shells/min × 0.12 (12% fire chance) = 8.23.

8.23

AP shells

AP alpha3,100

AP Velocity914 m/s

Min Ricochet45 deg

Guaranteed Ricochet60 deg

Fuse Timer0.025 s

Fuse Threshold25 mm

AP overmatch

floor(152 mm caliber / 14.3) = 10 mm (AP auto-penetrates plating this thick or less).

10 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 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot 914^{1.38} = 233.1 mm

233.1 mm point-blank

AP Pen Far

Same formula at the ship's max firing range (13.4 km), where the shell has slowed to 364.9 m/s:

P = 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot {364.9}^{1.38} = 65.7 mm

65.7 mm at 13.4 km

AP full-salvo alpha

3,100 AP damage x 8 broadside guns = 24,800.

24,800

AP DPM

24,800 AP full-salvo alpha x 60 / 7 s base reload = 212,571.

212,571

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

ModuleMk9 mod. 1

Launchers / tubes2 launchers × 3 tubes = 6 tubes

Reload time38 s

Projectile speed49.0 kt

Range8.22 km

Maximum simulated damage

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, 600 \cdot 0.333 = 5, 533

. 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.

≈ 5,533

Maximum damage (ammunition)

16,600 warhead alpha / 3 + 700 blast = 6,233. 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.

6,233

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.

700

Torpedo detectability1 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{1 km}{49 kt \times 2.6855} = 7.6 s

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

7.6 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

Torp Turn

Time to rotate the launchers 180 deg:

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

7.2 s

Torp Arming162 m

Per-side salvo damage

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 3 x 5,533 = 16,599. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

16,599

AA Defense

AA mount points4

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.

3.5 km

76.2 mm Mk22 mod. 24×1 76mm

Guns76.2 mm Mk22 mod. 2

Continuous DPS

Effective DPS: 4 raw aura damage × 3.5 × 0.9 hit probability = 13 - the same in-game units as the Close-range AA DPS headline.

Range3.5 km

AA explosions

Each ~2 s salvo fires 2 AA explosions in quick succession, each leaving 1 cloud ahead of the attacking squadron - up to 2 clouds per salvo × 120 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, 1 cloud each

Cloud damage

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

120

Cloud spawn chance

Each cloud in the pattern rolls this chance to spawn, so salvos average fewer clouds than the maximum. Often called flak 'hit chance', but spawned clouds always damage planes that fly into them - the roll is on spawning.

90%

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 AA mount is operational - it stops only once every AA mount is knocked out.

AA mounts

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 3.5 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.

2.5-3.5 km

See the AA layers diagram ↓

Maneuverability

Engine power90,000 hp

Maximum speed34.0 kt

Turning circle radius600 m

Rudder shift time5.8 s

Engine power-boost threshold7.0 kt

Engine spool-up time15.3 s

Reverse spool-up time7.7 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.

26.1 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).

23.7 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.

37.4 s

Guns in a full turn

With the rudder hard over the hull turns 6.9°/s, so a target drifts across the bow at that rate. Turret traverse minus hull turn: 10 − 6.9 = +3.1°/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 (+3.1°/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): 11.14 km x 0.955 = 10.64 km. Camouflage does not change detectability by air.

11.14 km

With Grade IV camouflage (sea)

Detectability by sea 11.14 km x 0.955 (Grade IV permanent camo or any disposable camo) = 10.64 km.

10.64 km

Detectability by air6.68 km

Smoke firing penalty5.15 km

Detect when firing (sea)

max(main battery range, sea detectability 11.14 km) = 13.38 km. Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach.

13.38 km

Detect when firing (air)

Air detectability 6.68 km + gun-firing bloom 3.04 km = 9.72 km. The bloom tracks main-battery caliber 152 mm × 0.020 = 3.04 km.

9.72 km

Detect when on fire (sea)

Sea detectability 11.14 km + 2.0 km while burning = 13.14 km.

13.14 km

Detect when on fire (air)

Air detectability 6.68 km + 3.0 km while burning = 9.68 km.

9.68 km

Guaranteed Detect2 km

✦

Consumables

Damage Control Party∞ charges · 60 s reload · 5 s active

Sonar2 charges · 180 s reload · 90 s active · 3.72 km ship detect
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{124 \times 30}{1000} = 3.72 km$
· 2.67 km torpedo detect
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{89 \times 30}{1000} = 2.67 km$

Catapult Fighter3 charges · 80 s reload · 70 s active · 5 km patrol radius
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{167 \times 30}{1000} = 5 km$
· 1 squadron size

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 cruiserStandard

The standard cruiser dispersion curve.

Shell scatter width @ 5 km67.5 m

(166.7 × (8 − 1.1) / 1000 + 1.1) × 30 = 67.5 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 km102 m

(333.3 × (8 − 1.1) / 1000 + 1.1) × 30 = 102 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 km28.6 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  $delim \cdot R_{m a x} = 0.5 \cdot 13376 = 6688$  m, and  $radiusOnMax = 0.6$  at 13376 m. Below the kink:  $k = 0.2 + (0.5 - 0.2) \cdot \frac{5000}{6688} = 0.4243$ , so  $σ_{V} = σ_{H} \cdot k = 67.5 \cdot 0.4243 = 28.6 m$ .

Shell scatter height @ 10 km56.1 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  $delim \cdot R_{m a x} = 0.5 \cdot 13376 = 6688$  m, and  $radiusOnMax = 0.6$  at 13376 m. Above the kink:  $k = 0.5 + (0.6 - 0.5) \cdot \frac{10000 - 6688}{13376 - 6688} = 0.5495$ , so  $σ_{V} = σ_{H} \cdot k = 102 \cdot 0.5495 = 56.1 m$ .

AP pen 5 km140 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot {632.2}^{1.38} = 140 mm$ , where 632.2 m/s is the shell's speed when it arrives at 5 km (from 914 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 km86 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot {445.4}^{1.38} = 86 mm$ , where 445.4 m/s is the shell's speed when it arrives at 10 km (from 914 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 km5.82 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.315 \cdot {0.152}^{2}}{8 \cdot 47.7} = 5.99 \times 10^{- 5}$ . That runs from a 914 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 km5.83 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.3164 \cdot {0.152}^{2}}{8 \cdot 47.6} = 6.03 \times 10^{- 5}$ . That runs from a 914 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)8

Counted from each mount's firing arc: most barrels that bear at once: 8 of 12, on the beam; casemate/wing mounts only fire one side.

Model inputs

Krupp (AP)1,772

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 mass47.6 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 coefficient0.3164

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

AP muzzle velocity914 m/s

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

HE muzzle velocity914 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.

minRadius1.1

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 time7.6 s

1000 m / (49.0 kt × 2.6855) = 7.6 s. detectability / (speed kt x 2.6855 m/s per knot on the game clock).

Torpedo speed49.0 kt

Travel time to max range62.5 s

8220 m / (49.0 kt × 2.6855) = 62.5 s. range / (speed kt x 2.6855 m/s per knot on the game clock).

Tube count6

2 launchers × 3 tubes.

Per-side salvo3 torpedoes

6 wing tubes / 2 = 3: the launchers sit one per beam, so only half of them reach any one side. Each launcher reloads on its own, so she can fire one beam, turn, and fire the other without waiting.

Full-salvo damage33,198

All tubes hitting one target: tubes x per-torpedo simulated damage = 6 x 5,533 = 33,198. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

AA defense

AA DPS at max range13

Only families that reach 3.5 km contribute at the outer edge of the AA bubble. In-game families: 3in50 Mk22 Mod2 4x1 -> 13 DPS @ 3.5 km.

AA DPS layered by range13 DPS @ 3.5 km

@ 3.5 km: 13 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-blank13

13 = 13 DPS: the sum of every family's average DPS, achievable only inside the closest-range family (3.5 km).

AA threat index46

13 × 3.5 = 46. 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.

Open in Charting Tool

Ship Charts

Background

A high-speed scout cruiser with a torpedo armament and powerful artillery. The warship also carried aircraft handling equipment. Arrangement of her main battery guns was different from other ships of the same class.

Armor Beta

Hull HP 27,000, distributed across 5 hull zones, each with its own plate thicknesses, saturation cap, and pen thresholds.

Bow & stern10 mm

Overmatched by 136+ AP guns across the bracket. Can’t reliably bow-tank; gets bow-citadelled and overpenned.

Belt / citadel76 mm

Thin belt: battleship AP citadels straight through it broadside. Rely on angle, speed and concealment, never sit flat.

Farming6 mm

Superstructure and extremities take HE pens and AP overpens from nearly any gun: steady chip damage. Fire resistance 17%, fires burn 30s. Range-by-range in the Compare tool →

Section	Plates	HP cap	Threats	Tactic
Bow	10 mm primary (range 10–25 mm)	3,500 (13% of HP)	Overmatched by 150mm+ AP (De Ruyter, Karlsruhe)Angle bounces 127mm10 mm: HE pens from 127mm+	Bow-tank fits behind this exterior plate. Saturation is FAST here; the cap is often only a few thousand HP.
Hull (midship)	6 mm primary (range 6–38 mm)	20,300 (75% of HP)	Overmatched by 127mm+ AP (Shenyang, Nicholas)6 mm: HE pens from 127mm+	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	10 mm primary (range 10–25 mm)	1,900 (7% of HP)	Overmatched by 150mm+ AP (De Ruyter, Karlsruhe)Angle bounces 127mm10 mm: HE pens from 127mm+	Mirror of bow. Same fast saturation.
Citadel	76 mm primary (range 13–76 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	10 mm primary (range 10–37 mm)	1,300 (5% of HP)	Any HE ≥16 mm pens at full damage	Any HE ≥16 mm pens at full damage. HE-spam target, and the section saturates fast (often only a few thousand HP).
Turret (module, per magazine)	separate HP pool, does not drain ship HP	13,500 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 (76 mm mount)	separate HP pool, does not drain ship HP	200 per-mount HP	Destroyed at 0 HP	Per-mount HP for the heaviest AA on this ship. An AA mount destroyed at 0 HP stops shooting down planes for the rest of the battle; DCP does not repair destroyed mounts. HE shells specifically target AA mounts since the small-caliber HP pool falls fast.
Rudder (module)	separate HP pool, does not drain ship HP	8,100 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 Marblehead FE can equip.

DefaultThe ship’s standard exterior

Primary official WG sources

GamingDiver has indexed official WG mentions for this ship, but none are focused enough to show as a primary source card here. Low-context list, crate, comparison, or passing mentions are intentionally filtered out.

Source status No high-context source card yet Filtered for precision

Marblehead FE

Marblehead FE Community Stats

Marblehead FE Community Stats

Marblehead FE Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get Marblehead FE

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