Main battery formulas
Shell Grouping (σ)2
Shell grouping (sigma); shown in-game as Shell Grouping.
Max Horiz Disp115.6 m
Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model: $\sigma_H = \left(\dfrac{R}{30}\cdot\dfrac{\text{idealRadius}-\text{minRadius}}{\text{idealDistance}} + \text{minRadius}\right)\cdot 30$ $= \left(\dfrac{13416}{30}\cdot\dfrac{8-0.5}{1000} + 0.5\right)\cdot 30 = 115.6\,\text{m}$
Max Vert Disp69.4 m
Vertical dispersion ellipse height at max range: $\sigma_V = \sigma_H \cdot \text{radiusOnMax}$ $= 115.6 \cdot 0.6 = 69.4\,\text{m}$
Med Horiz Disp36.9 m
50%-hit horizontal radius: $\sigma_{H,50} = \sigma_H \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 115.6 \cdot 0.319\;(\sigma = 2) = 36.9\,\text{m}$
Med Vert Disp22.2 m
50%-hit vertical radius: $\sigma_{V,50} = \sigma_V \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 69.4 \cdot 0.32\;(\sigma = 2) = 22.2\,\text{m}$
Dispersion familyDD Disp.
Standard destroyer dispersion baseline.
AP Pen Close337.2 mm
Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: $P = 10^{-7}\cdot K \cdot m^{0.69} \cdot d^{-1.07} \cdot v_0^{1.38}$ $= 10^{-7}\cdot 2609 \cdot 54.8^{0.69} \cdot 0.152^{-1.07} \cdot 841^{1.38} = 337.2\,\text{mm}$. Matches the in-game spec card.
AP Pen Far98.5 mm
Same formula at the ship's max firing range (18.4 km), where the shell has slowed to 344.7 m/s: $P = 10^{-7}\cdot 2609 \cdot 54.8^{0.69} \cdot 0.152^{-1.07} \cdot 344.7^{1.38} = 98.5\,\text{mm}$.
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 Radius15
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 alpha9
All 9 barrels bear on the broadside.
Turret turn time20 s
180 degrees / 9 deg/s traverse speed = 20 s.
HE full-salvo alpha18,900
2,100 HE damage x 9 broadside guns = 18,900.
AP full-salvo alpha28,800
3,200 AP damage x 9 broadside guns = 28,800.
Base HE DPM151,200
18,900 HE full-salvo alpha x 60 / 7.5 s base reload = 151,200.
Base AP DPM230,400
28,800 AP full-salvo alpha x 60 / 7.5 s base reload = 230,400.
Base shells/min72
9 broadside guns x 60 / 7.5 s base reload = 72.
Base fires/min6.48
9 HE shells x 60 / 7.5 s reload x 9% fire chance = 6.48.
Torpedoes
Torpedo detectability1.3 km
Estimated torpedo reaction time8.2 s
detectability / (speed kt x 2.6 community game-speed factor).
Torpedo speed61 kt
Travel time to max range50.4 s
range / (speed kt x 2.6 community game-speed factor).
Tube count6
2 launchers x 3 tubes.
Per-side salvo3 torpedoes
tube count / 2 (symmetric port/starboard launcher layout; common on cruisers and battleships with deck torpedoes).
Full-salvo damage88,602
All tubes hitting one target: tubes x per-torpedo simulated damage = 6 x 14,767 = 88,602.
Per-side salvo damage44,301
One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 3 x 14,767 = 44,301.
AA defense
AA DPS at point-blank273
In-game AA card sum: 273 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 index1365
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)120,000
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: 4×2 102 mm (4/side) × 60/3 × 1500 = 120,000. Assumes every shell hits (real hit rate is lower; the Brawl matchup tool on the Compare page folds in dispersion + target armor).
Max HE alpha1500
Maximum HE damage per shell across secondary HE families. Best on this ship: 1500 from the 102 mm family.
Max HE fire chance6%
Maximum per-shell fire chance across secondary HE families (before target fire resistance is applied). Best on this ship: 6% from the 102 mm family.
Max HE pen17 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: 17 mm from the 102 mm family.
Damage Control Party
High-Frequency Sonar
Smoke Generator
Repair Party
Defensive AA Fire