Main battery formulas
Shell Grouping (σ)1.8
Shell grouping (sigma); shown in-game as Shell Grouping.
Max Horiz Disp202.6 m
Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model: $\sigma_H = \left(\dfrac{R}{30}\cdot\dfrac{\text{idealRadius}-\text{minRadius}}{\text{idealDistance}} + \text{minRadius}\right)\cdot 30$ $= \left(\dfrac{13942}{30}\cdot\dfrac{12-2.2}{1000} + 2.2\right)\cdot 30 = 202.6\,\text{m}$
Max Vert Disp121.6 m
Vertical dispersion ellipse height at max range: $\sigma_V = \sigma_H \cdot \text{radiusOnMax}$ $= 202.6 \cdot 0.6 = 121.6\,\text{m}$
Med Horiz Disp69.7 m
50%-hit horizontal radius: $\sigma_{H,50} = \sigma_H \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 202.6 \cdot 0.344\;(\sigma = 1.8) = 69.7\,\text{m}$
Med Vert Disp41.8 m
50%-hit vertical radius: $\sigma_{V,50} = \sigma_V \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 121.6 \cdot 0.344\;(\sigma = 1.8) = 41.8\,\text{m}$
Dispersion familyEU BB Disp.
Standard BB dispersion. Used as the baseline for cross-family comparisons.
AP Pen Close592.7 mm
Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: $P = 10^{-7}\cdot K \cdot m^{0.69} \cdot d^{-1.07} \cdot v_0^{1.38}$ $= 10^{-7}\cdot 2350 \cdot 585^{0.69} \cdot 0.34^{-1.07} \cdot 780^{1.38} = 592.7\,\text{mm}$. Matches the in-game spec card.
AP Pen Far249.8 mm
Same formula at the ship's max firing range (19.2 km), where the shell has slowed to 417.1 m/s: $P = 10^{-7}\cdot 2350 \cdot 585^{0.69} \cdot 0.34^{-1.07} \cdot 417.1^{1.38} = 249.8\,\text{mm}$.
HE penetration57 mm
57 mm ≈ 340 mm caliber / 6 (standard HE penetration ratio).
AP overmatch23 mm
floor(340 mm caliber / 14.3) = 23 mm (AP auto-penetrates plating this thick or less).
AP AOE Radius50
AP shell over-penetration splash radius; scales with shell mass. Wickes 102mm = 3, standard 152mm CL ~ 20, Iowa 406mm ~ 270, Yamato 460mm = 400, Incomparable 650mm = 550 (max). Larger value = bigger splash damage area when AP over-pens.
Broadside guns used for alpha10
All 10 barrels bear on the broadside.
Turret turn time60 s
180 degrees / 3 deg/s traverse speed = 60 s.
HE full-salvo alpha47,000
4,700 HE damage x 10 broadside guns = 47,000.
AP full-salvo alpha95,000
9,500 AP damage x 10 broadside guns = 95,000.
Base HE DPM94,000
47,000 HE full-salvo alpha x 60 / 30 s base reload = 94,000.
Base AP DPM190,000
95,000 AP full-salvo alpha x 60 / 30 s base reload = 190,000.
Base shells/min20
10 broadside guns x 60 / 30 s base reload = 20.
Base fires/min5.2
10 HE shells x 60 / 30 s reload x 26% fire chance = 5.2.
AA defense
AA DPS at point-blank197
In-game AA card sum: 197 DPS, achievable only when a target is inside the shortest-range AA family. Captured as a point-blank total only -- per-family breakdown not yet recorded for this ship, so the DPS at 5 km is unknown.
Maximum AA range5 km
In-game AA card max range: 5 km. Only the longest-reach family contributes at this distance.
AA threat index985
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 range3.1 km
Secondary battery firepower
Secondary DPM (per side)132,000
Sum across all secondary families of (per-side barrels × 60 / reload_s × alpha), where per-side barrels = mounts × barrels-per-mount / 2 (the guns that bear on one broadside target). Per-family: 22×1 139 mm (11/side) × 60/10 × 2000 = 132,000. Assumes every shell hits (real hit rate is lower; the Brawl matchup tool on the Compare page folds in dispersion + target armor).
Max HE alpha2000
Maximum HE damage per shell across secondary HE families. Best on this ship: 2000 from the 139 mm family.
Max HE fire chance8%
Maximum per-shell fire chance across secondary HE families (before target fire resistance is applied). Best on this ship: 8% from the 139 mm family.
Max HE pen23 mm
Maximum HE armor penetration across secondary HE families (caliber × 1/6 for most nations; 1/4 for German/UK BBs). Shells whose pen falls under a plate's armor thickness shatter for 0 hull damage though fire chance still applies. Best on this ship: 23 mm from the 139 mm family.
Damage Control Party
Repair Party
Secondary Battery Booster