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Tier IVCruiser
JapanPremiumLegendaryGlobal
JapanPremiumLegendaryGlobalIwaki Alpha
WoWS World of Warships Japan Cruiser · Tier IV
- Main Battery
- 140 mm/50 3rd Year Type on a single mount
- 5 turrets × 1 barrels
- Range 10.7 km
- Torpedoes
- 610 mm Triple
- 2 launchers × 3 tubes
- Range 10 km
Specifications
Iwaki Alpha Win Rate & Combat Stats
Sample of 495.2K players · as of 2026-10-15ServerBattlesWin rateAvg damage
EUBattles 58,749
58.7K58,749
Win rate
59.80%
#1 of 13
Avg damage
36,689
#1 of 13
ASIABattles 21,138
21.1K21,138
Win rate
58.24%
#1 of 13
Avg damage
36,660
#4 of 13
NABattles 29,099
29.1K29,099
Win rate
58.27%
#1 of 13
Avg damage
35,574
#4 of 13
Averages from our own crawled player sample, not official server-wide data. The sample skews toward active clan players, so its overall win rate runs about 1 point above the true server average. Battle counts are career totals and include games played before this ship’s past balance changes.
Survivability
Hit Points18,600
#11 of 13
Group avg 20,454Main Belt Armor63 mm
Bow / Stern Armor13 mm
Ship Length137.6 m
Ship Width12.7 m
Main Battery
Main battery layout5×1(Total barrels 5)
Caliber140 mm
Firing Range10.7 km
#11 of 13
Group avg 12.0 kmReload Time6.0 s
Rotation Time21.2 s
Max Dispersion106 m
Sigma2.00
Shell Types
AP Shell
AP ShellDamage2,700
Shell Velocity850 m/s
Overmatch Threshold9.8 mm
Ricochet Angle45° / 60°
Normalization8.5°
Fuse Threshold23 mm
Air Drag0.34
Flight Time7.41 s
Nominal all-gun DPM135,000
#8 of 13
Group avg 155,294HE Shell
HE ShellDamage2,400
Shell Velocity850 m/s
Fire Chance10%
Penetration23 mm
Air Drag0.34
Flight Time7.41 s
Nominal all-gun DPM120,000
Torpedoes
Type8 mod. 2
Type8 mod. 2Torpedo Tubes2
Speed59 knots
Range10.0 km
#1 of 12
Group avg 6.3 kmDamage16,266
#1 of 12
Group avg 11,197Alpha Damage44,900
Splash Damage1,300
Flood Chance269%
Detectability1.50 km
Reload Time76.0 s
#10 of 12
Group avg 58.3 s180° Rotation7.2 s
Arming Time1 s
Spread Angle3.6° / 12°
Torpedo Caliber610 mm
Tube Module HP1,200
Fuse Depth0.14 m
AA Defense
AA Ranges
Mid range2.5 km60 dps
Maneuverability
Max Speed35.0 knots
#2 of 13
Group avg 32.2 knotsTurning Radius580 m
#4 of 13
Group avg 605 mRudder Shift Time3.8 s
Engine Power68,250 hp
Displacement4,812 t
Power-to-Weight14.18 hp/t
Concealment
Max Surface Detection9.80 km
#4 of 13
Group avg 10.53 kmMin Surface Detection8.82 km
Air Detection3.84 km
Submarine Detection3.84 km
Detectability Firing in Smoke4.29 km
Consumables
Slot 1
Damage Control Party
Damage Control Party
Extinguishes fires, removes instances of flooding, and repairs damaged modules. Prevents enemy acoustic torpedoes from homing.
Reload60 s
Duration5 s
Charges∞
Slot 2
Smoke Generator
Smoke Generator
Generates a smoke screen that reduces the risk of being detected by the enemy.
Reload160 s
Duration15 s
Charges3
Smoke Duration80 s
Slot 3
Hydroacoustic Search
Hydroacoustic Search
Increases the range of assured acquisition of enemy ships and torpedoes, including those within smoke screens.
Reload120 s
Duration100 s
Charges3
Ship Detect4.0 km
Torp. Detect3.0 km
Iwaki Alpha Change History
- Shell ballistic parameters changed. The firing arcs will now be flatter
Ballistics
Armor Model
Overview
In the late 1910s, according to the plans for the development of the Japanese Navy, six cruisers based on the improved design of the Tenryū class were supposed to be built. Due to a number of new design solutions, these ships were supposed to receive an additional fifth main battery gun and have their hulls lightened. The project was never implemented, but its further development led to the creation of the Kuma-class cruisers.
Modules
140 mm/50 3rd Year Type on a single mount
140 mm/50 3rd Year Type on a single mount
Main Battery
Rate of Fire:10
Max AP Damage:2,700
Max HE Damage:2,400
Rotation Time:21.2s
Type8 mod. 2
Type8 mod. 2
Torpedoes
Range:0 km
Max Damage:16,266
Reload Time:0.8 knots
Torpedo Speed:59 knots
Iwaki
Iwaki
Hull
AA Guns:5
Main Guns:5
Secondary Guns:0
HP:18,600
Range:3-63
Torpedo Tubes:2
Propulsion: 68,250 hp
Propulsion: 68,250 hp
Engine
Max Speed:35 knots
Type5 mod. 1
Type5 mod. 1
Fire Control
Range:0 km
Upgrades
Slot 1
Aiming Systems Modification 0
Aiming Systems Modification 0
Maximum main battery shell dispersion: -40%
Main battery traverse speed: +20%
Maximum secondary battery shell dispersion: -40%
Secondary battery firing range: +20%
Torpedo tubes traverse speed: +20%
Auxiliary Armaments Modification 1
Auxiliary Armaments Modification 1
AA mount survivability: +100%
Secondary battery survivability: +100%
Main Armaments Modification 1
Main Armaments Modification 1
Risk of main battery becoming incapacitated: -20%
Main battery survivability: +50%
Main battery repair time: -20%
Risk of torpedo tubes becoming incapacitated: -20%
Torpedo tubes survivability: +50%
Torpedo tubes repair time: -20%
Damage Control Party Modification 1
Damage Control Party Modification 1
Consumable action time: +40%
Slot 2
Engine Room Protection
Engine Room Protection
Risk of steering gears becoming incapacitated: -20%
Steering gears repair time: -20%
Risk of engine becoming incapacitated: -20%
Engine repair time: -20%
Damage Control System Modification 1
Damage Control System Modification 1
Risk of catching fire: -5%
Risk of flooding: -3%
Hydroacoustic Search Modification 1
Hydroacoustic Search Modification 1
Consumable action time: +20%
Slot 3
Torpedo Tubes Modification 1
Torpedo Tubes Modification 1
Risk of torpedo tubes becoming incapacitated: -40%
Torpedo tubes traverse speed: +20%
Torpedo speed: +5%
Aiming Systems Modification 1
Aiming Systems Modification 1
Maximum main battery shell dispersion: -7%
Maximum secondary battery shell dispersion: -5%
Secondary battery firing range: +5%
Torpedo tubes traverse speed: +20%
AA Guns Modification 1
AA Guns Modification 1
Priority AA sector preparation time: -20%
Main Battery Modification 2
Main Battery Modification 2
Main battery traverse speed: +15%
Smoke Generator Modification 1
Smoke Generator Modification 1
Smoke Curtain Generator consumable action time: +20%
Smoke Generator consumable action time: +20%
Slot 4
Steering Gears Modification 1
Steering Gears Modification 1
Rudder shift time: -20%
Propulsion Modification 1
Propulsion Modification 1
Maximum reverse speed at full power: +140%
Time to reach full engine power when decelerating: -50%
Maximum forward speed at full power: +140%
Time to reach full engine power when accelerating: -50%