Main battery formulas
Shell Grouping (σ)2
Shell grouping (sigma); shown in-game as Shell Grouping.
Max Horiz Disp78.3 m
Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model: $\sigma_H = \left(\dfrac{R}{30}\cdot\dfrac{\text{idealRadius}-\text{minRadius}}{\text{idealDistance}} + \text{minRadius}\right)\cdot 30$ $= \left(\dfrac{8443}{30}\cdot\dfrac{8-0.5}{1000} + 0.5\right)\cdot 30 = 78.3\,\text{m}$
Max Vert Disp47 m
Vertical dispersion ellipse height at max range: $\sigma_V = \sigma_H \cdot \text{radiusOnMax}$ $= 78.3 \cdot 0.6 = 47\,\text{m}$
Med Horiz Disp25 m
50%-hit horizontal radius: $\sigma_{H,50} = \sigma_H \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 78.3 \cdot 0.319\;(\sigma = 2) = 25\,\text{m}$
Med Vert Disp15 m
50%-hit vertical radius: $\sigma_{V,50} = \sigma_V \cdot \text{GetHalfHitsRatio}(\sigma)$ $= 47 \cdot 0.319\;(\sigma = 2) = 15\,\text{m}$
AP Pen Close101.7 mm
Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity: $P = 10^{-7}\cdot K \cdot m^{0.69} \cdot d^{-1.07} \cdot v_0^{1.38}$ $= 10^{-7}\cdot 2150 \cdot 6.5^{0.69} \cdot 0.0762^{-1.07} \cdot 690^{1.38} = 101.7\,\text{mm}$. Matches the in-game spec card.
AP Pen Far19.6 mm
Same formula at the ship's max firing range (10.6 km), where the shell has slowed to 209.1 m/s: $P = 10^{-7}\cdot 2150 \cdot 6.5^{0.69} \cdot 0.0762^{-1.07} \cdot 209.1^{1.38} = 19.6\,\text{mm}$.
HE penetration13 mm
13 mm ≈ 76 mm caliber / 6 (standard HE penetration ratio).
AP overmatch5 mm
floor(76 mm caliber / 14.3) = 5 mm (AP auto-penetrates plating this thick or less).
AP AOE Radius5
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 alpha1
Barrels that can bear on one beam (1 of 5); casemate/wing mounts only fire one side.
Turret turn time16.4 s
180 degrees / 11 deg/s traverse speed = 16.4 s.
HE full-salvo alpha1,300
1,300 HE damage x 1 broadside guns = 1,300.
AP full-salvo alpha1,000
1,000 AP damage x 1 broadside guns = 1,000.
Base HE DPM15,600
1,300 HE full-salvo alpha x 60 / 5 s base reload = 15,600.
Base AP DPM12,000
1,000 AP full-salvo alpha x 60 / 5 s base reload = 12,000.
Base shells/min12
1 broadside guns x 60 / 5 s base reload = 12.
Base fires/min0.72
1 HE shells x 60 / 5 s reload x 6% fire chance = 0.72.
Torpedoes
Torpedo detectability0.7 km
Estimated torpedo reaction time6.1 s
detectability / (speed kt x 2.6 community game-speed factor).
Torpedo speed44 kt
Travel time to max range43.8 s
range / (speed kt x 2.6 community game-speed factor).
Tube count4
2 launchers x 2 tubes.
Per-side salvo4 torpedoes
4 (centerline launchers train across - full salvo to either side).
Full-salvo damage22,132
All tubes hitting one target: tubes x per-torpedo simulated damage = 4 x 5,533 = 22,132.
Per-side salvo damage22,132
One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 4 x 5,533 = 22,132.
Damage Control Party
Smoke Generator
Engine Boost