Main battery formulas
Shell Grouping (σ)2
Shell grouping (sigma); shown in-game as Shell Grouping.
Max Horiz Disp104 m
Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model: $\sigma_H = \left(\dfrac{R}{30}\cdot\dfrac{\text{idealRadius}-\text{minRadius}}{\text{idealDistance}} + \text{minRadius}\right)\cdot 30$ $= \left(\dfrac{10296}{30}\cdot\dfrac{8-1.1}{1000} + 1.1\right)\cdot 30 = 104\,\text{m}$
Max Vert Disp62.4 m
Vertical dispersion ellipse height at max range: $\sigma_V = \sigma_H \cdot \text{radiusOnMax}$ $= 104 \cdot 0.6 = 62.4\,\text{m}$
Med Horiz Disp33.2 m
50%-hit horizontal radius: $\sigma_{H,50} = \sigma_H \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 104 \cdot 0.319\;(\sigma = 2) = 33.2\,\text{m}$
Med Vert Disp19.9 m
50%-hit vertical radius: $\sigma_{V,50} = \sigma_V \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 62.4 \cdot 0.319\;(\sigma = 2) = 19.9\,\text{m}$
AP Pen Close261.7 mm
Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: $P = 10^{-7}\cdot K \cdot m^{0.69} \cdot d^{-1.07} \cdot v_0^{1.38}$ $= 10^{-7}\cdot 2100 \cdot 45.4^{0.69} \cdot 0.152^{-1.07} \cdot 900^{1.38} = 261.7\,\text{mm}$. Matches the in-game spec card.
AP Pen Far57.9 mm
Same formula at the ship's max firing range (14.2 km), where the shell has slowed to 301.7 m/s: $P = 10^{-7}\cdot 2100 \cdot 45.4^{0.69} \cdot 0.152^{-1.07} \cdot 301.7^{1.38} = 57.9\,\text{mm}$.
HE penetration25 mm
25 mm ≈ 152 mm caliber / 6 (standard HE penetration ratio).
AP overmatch10 mm
floor(152 mm caliber / 14.3) = 10 mm (AP auto-penetrates plating this thick or less).
AP AOE Radius10
AP shell over-penetration splash radius; scales with shell mass. Wickes 102mm = 3, standard 152mm CL ~ 20, Iowa 406mm ~ 270, Yamato 460mm = 400, Incomparable 650mm = 550 (max). Larger value = bigger splash damage area when AP over-pens.
Broadside guns used for alpha6
All 6 barrels bear on the broadside.
Turret turn time18 s
180 degrees / 10 deg/s traverse speed = 18 s.
HE full-salvo alpha13,200
2,200 HE damage x 6 broadside guns = 13,200.
AP full-salvo alpha15,000
2,500 AP damage x 6 broadside guns = 15,000.
Base HE DPM105,600
13,200 HE full-salvo alpha x 60 / 7.5 s base reload = 105,600.
Base AP DPM120,000
15,000 AP full-salvo alpha x 60 / 7.5 s base reload = 120,000.
Base shells/min48
6 broadside guns x 60 / 7.5 s base reload = 48.
Base fires/min3.84
6 HE shells x 60 / 7.5 s reload x 8% fire chance = 3.84.
AA defense
AA DPS at point-blank101
In-game AA card sum: 101 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 4 km is unknown.
Maximum AA range4 km
In-game AA card max range: 4 km. Only the longest-reach family contributes at this distance.
AA threat index404
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.
Secondary battery firepower
Secondary DPM (per side)30,000
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: 4×1 88 mm (2/side) × 60/4 × 1000 = 30,000. Assumes every shell hits (real hit rate is lower; the Brawl matchup tool on the Compare page folds in dispersion + target armor).
Max HE alpha1000
Maximum HE damage per shell across secondary HE families. Best on this ship: 1000 from the 88 mm family.
Max HE fire chance4%
Maximum per-shell fire chance across secondary HE families (before target fire resistance is applied). Best on this ship: 4% from the 88 mm family.
Max HE pen15 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: 15 mm from the 88 mm family.
Damage Control Party
Repair Party