Hit Points34,730
Displacement9,903 t
Hull dimensions ƒ
Length x beam at the waterline, plus draft. Length matters when dodging torpedoes; beam and draft shape how hard the ship is to hit.
Armor range16–100 mm
Plate armor thicknesses16, 20, 26, 27, 40, 50, 70, 100 mm
Armor material/layer entries34
Fire resistance ƒ
top hull: 1 − 0.6337 fire coefficient = 36.6%. 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.
Fire duration30 s
Fire damage ƒ
One unattended fire: 0.003 of max HP per second (0.3%) × 30 s = 0.09 of the pool; 0.09 × 34,730 HP = 3,126 HP on this ship. 4 fire points can burn at once.
Flood duration40 s
Flood damage ƒ
One unattended flood: 0.0025 of max HP per second (0.25%) × 40 s = 0.1 of the pool; 0.1 × 34,730 HP = 3,473 HP on this ship.
Torp Reduction ƒ
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 ƒ
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.
Steering gear HP ƒ
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.
Effective HP ƒ
Base 34,730 HP plus everything Repair Party can restore: 0.006 of max HP per second (0.6%) × 28 s × 34,730 HP = 5,835 HP per charge, × 2 charges = 11,669 HP. Ceiling, not a prediction: a charge only restores damage actually taken, and only the regeneratable share of it. In practice ships realize about half of this, mostly because half the charges go unspent; a charge that is used returns about 97% of the per-charge figure above.
Repairable: penetration50%
Repairable: citadel33%
Repairable: steering gear50%
Bow section HP ƒ
Damage saturation pool for the bow: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 2,300 = 4,600), 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.
Casemate section HP ƒ
Damage saturation pool for the casemate: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 4,050 = 8,100), 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.
Hull section HP ƒ
Damage saturation pool for the hull: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 26,100 = 52,200), 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.
Superstructure section HP ƒ
Damage saturation pool for the superstructure: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 2,300 = 4,600), 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.
Stern section HP ƒ
Damage saturation pool for the stern: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 1,800 = 3,600), 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.
Citadel section HP ƒ
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).
These main guns are dual-purpose: they also fire at aircraft and feed the AA Defense card.
ModuleArtillery: 152 mm/57 BL-115
Mounts / barrels4 mounts / 8 barrels
Reload time5.8 s
Firing range15.5 km
Turret traverse13 °/s
Turret armor100 mm
Turret traverse arcs ƒ
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.
Guns to bear ƒ
180° − 150° (the most restricted aft-facing mount's arc) = 30° off bow; 180° − 150° (the most restricted forward-facing mount's arc) = 30° 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.
Shell Grouping (σ)2
Dispersion type ƒ
In practice: the baseline curve for a standard cruiser -- at max range (15.5 km) shells land in an ellipse about 140 m wide and 84 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.
Max Horiz Disp ƒ
Horizontal dispersion ellipse width at max range, from the dispersion model:
Max Vert Disp ƒ
Vertical dispersion ellipse height at max range:
Med Horiz Disp ƒ
50%-hit horizontal radius:
Med Vert Disp ƒ
50%-hit vertical radius:
Turret turn time ƒ
180 degrees / 13 deg/s traverse speed = 13.8 s.
Shells/min ƒ
Zero upgrades: 8 broadside guns x 60 / 5.857 s (5.8 s = 41 ticks) base reload = 82. All upgrades (Main Battery Mod. 3 = -10% reload): 8 broadside guns x 60 / 5.286 s (5.2 s = 37 ticks) all-upgrades reload (5.8 s × 0.9 Main Battery Mod. 3 = 5.2 s) = 90.8.
HE shells
HE alpha2,200
HE Velocity950 m/s
Fire Chance12%
HE fire DPM vs T7 BB72948
Effective HE DPM vs T7 BB253240
HE penetration ƒ
30 mm = 152 mm caliber / 5.07 (non-standard HE penetration ratio).
HE full-salvo alpha ƒ
2,200 HE damage x 8 broadside guns = 17,600.
HE DPM ƒ
Zero upgrades: 17,600 HE full-salvo alpha x 60 / 5.857 s (5.8 s = 41 ticks) base reload = 180,293. All upgrades (Main Battery Mod. 3 = -10% reload): 17,600 HE full-salvo alpha x 60 / 5.286 s (5.2 s = 37 ticks) all-upgrades reload (5.8 s × 0.9 Main Battery Mod. 3 = 5.2 s) = 199,784.
Fires/min ƒ
Zero upgrades: 82 shells/min × 0.12 (12% fire chance) = 9.83. All upgrades (Main Battery Mod. 3 = -10% reload): 90.8 shells/min × 0.12 (12% fire chance) = 10.9.
AP shells
AP alpha3,300
AP Velocity950 m/s
Min Ricochet45 deg
Guaranteed Ricochet60 deg
Fuse Timer0.025 s
Fuse Threshold25 mm
AP pen max range96 mm
AP overmatch ƒ
floor(152 mm caliber / 14.3) = 10 mm (AP auto-penetrates plating this thick or less).
AP Pen Close ƒ
AP formula evaluated at muzzle velocity: .
AP Pen Far ƒ
Same formula at the ship's max firing range (15.5 km), where the shell has slowed to 379 m/s: .
AP full-salvo alpha ƒ
3,300 AP damage x 8 broadside guns = 26,400.
AP DPM ƒ
Zero upgrades: 26,400 AP full-salvo alpha x 60 / 5.857 s (5.8 s = 41 ticks) base reload = 270,439. All upgrades (Main Battery Mod. 3 = -10% reload): 26,400 AP full-salvo alpha x 60 / 5.286 s (5.2 s = 37 ticks) all-upgrades reload (5.8 s × 0.9 Main Battery Mod. 3 = 5.2 s) = 299,676.
AP AOE Radius ƒ
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.
ModuleTorpedoes: 533 mm PTA-53-68-bis
Launchers / tubes2 launchers × 5 tubes = 10 tubes
Reload time131 s
Projectile speed65.0 kt
Range8 km
Maximum simulated damage ƒ
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: . 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.
Maximum damage (ammunition) ƒ
42,000 warhead alpha / 3 + 1,100 blast = 15,100. 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.
Torpedo module damage ƒ
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.
Torpedo detectability1.1 km
Reaction time ƒ
How long a target has to dodge after your torpedo is spotted at its detectability range (lower means less warning): . 2.6855 converts knots to m/s on the game clock. Base value; commander torpedo-concealment skills lower it further.
Flooding chance ƒ
This torpedo carries a flooding-chance value of 2.5 per hit, shown as . 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.
Torpedo launcher traverse25 °/s
Launch arcswing 145° (one launcher per beam)
Torp Turn ƒ
Time to rotate the launchers 180 deg: .
Torp Arming205 m
Per-side salvo damage ƒ
One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 5 x 14,000 = 70,000. Each hit on the target's torpedo belt is reduced by its torpedo protection %.
AA mount points6
Maximum AA range ƒ
Longest-reaching family on the in-game AA card. Base AirDefense aura max range is 4 km; dual-purpose mount auras extend it.
57 mm ZIF-756×4 57mm
Gunsmain battery (DP)
Continuous DPS ƒ
Effective DPS in in-game units (raw aura damage × 3.5 × hit probability, summed per contributing aura) - matches the Close-range AA DPS headline's currency. Includes 54 from dual-purpose main battery firing as AA in this range band.
Range5 km
Guns57 mm ZIF-75
Continuous DPS ƒ
Effective DPS: 78 raw aura damage × 3.5 × 0.9 hit probability = 246 - the same in-game units as the Close-range AA DPS headline.
Range4 km
Total DPS in Aura ƒ
Far 54 + Medium 246 = 300
AA explosions ƒ
Each ~2 s salvo fires 2 AA explosions in quick succession, each leaving 2 clouds ahead of the attacking squadron, plus 1 stray cloud farther out that appear off-beat between salvos - up to 5 clouds per salvo × 240 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.
Cloud damage ƒ
Damage a plane takes for flying into one flak cloud, before any reductions.
Cloud spawn chance ƒ
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.
Salvo interval ƒ
A new flak salvo (the AA explosions above) fires roughly every 2 s.
Fired by ƒ
Flak keeps firing while at least one main battery mount is operational - even losing every dedicated AA mount does not stop it.
Flak zone ƒ
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 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.
Maneuverability
Engine power121,000 hp
Maximum speed35.0 kt
Turning circle radius750 m
Rudder shift time7.5 s
Engine power-boost threshold7.0 kt
Engine spool-up time15.3 s
Reverse spool-up time7.7 s
Reverse speed ƒ
top speed / 4 + 4.9 = 35 / 4 + 4.9 = 13.7 kt. Base value; speed modifiers scale it.
Crash stop ƒ
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.
Engine boost threshold (reverse) ƒ
Speed below which the engine's built-in power boost applies in reverse.
Acceleration 0-90% ƒ
Time to reach 90% of top speed (31.5 kt of 35.0 kt).
Acceleration 0-99% ƒ
Time to reach 99% of top speed (34.6 kt of 35.0 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.
Guns in a full turn ƒ
With the rudder hard over the hull turns 5.8°/s, so a target drifts across the bow at that rate. Turret traverse minus hull turn: 13 − 5.8 = +7.2°/s, so the guns hold the target through the turn. Main Battery Mod. 2 (+20% traverse) and Mod. 3 (−15%) move this line.
Detectability by sea ƒ
Base value, no camouflage. With a Grade IV permanent camo (or any disposable camo): 13.81 km x 0.955 = 13.19 km. Camouflage does not change detectability by air.
With Grade IV camouflage (sea) ƒ
Detectability by sea 13.81 km x 0.955 (Grade IV permanent camo or any disposable camo) = 13.19 km.
Detectability by air8.29 km
Smoke firing penalty7.12 km
Detect when firing (sea) ƒ
max(main battery range, sea detectability 13.81 km) = 15.5 km. Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach.
Detect when firing (air) ƒ
Air detectability 8.29 km + gun-firing bloom 3.04 km = 11.33 km. The bloom tracks main-battery caliber 152 mm × 0.020 = 3.04 km.
Detect when on fire (sea) ƒ
Sea detectability 13.81 km + 2.0 km while burning = 15.81 km.
Detect when on fire (air) ƒ
Air detectability 8.29 km + 3.0 km while burning = 11.29 km.
Guaranteed Detect2 km
Damage Control Party∞ charges · 60 s reload · 5 s activeChoose one
Sonar2 charges · 180 s reload · 96 s active · 4.44 km ship detect ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): 
Defensive AA Fire3 charges · 140 s reload · 25 s active · ×2 flak burst boost ƒ
Repeats the flak burst pattern ×2 within each salvo - more clouds in the air over the salvo, at the same spots.
Surveillance Radar2 charges · 180 s reload · 20 s active · 11.7 km radar range ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): 
Repair Party2 charges · 60 s reload · 28 s active · 5,835 HP (16.8% of max HP) total heal (per charge) ƒ
0.006 of max HP per second (0.6%) × 28 s effective active time = 0.168 of max HP × 34,730 HP = 5,835 HP: up to 16.8% of max HP restored per charge.ƒ
0.168 of max HP per charge × 2 charges = 0.336 × 34,730 HP = 11,670 HP: up to 33.6% of max HP if the whole Repair Party loadout is used.ƒ
0.006 (0.6% of max HP) × 34,730 HP = 208 HP/s. WoWS heals a flat percent of MAX HP each second, so this rate holds at any health level.
