Combat envelope
Range and detection
Every bar uses the same 25 km scale. Surface detection is a visibility threshold, not a weapon range.
Ship Database
Tier IX
Battleship
Premium
Japan
Iwami B
One of the battleship projects developed in Japan in the mid-1930s. The ship was supposed to have four twin-gun main battery turrets. She had reinforced 100 mm dual-purpose artillery, improved anti-aircraft armament, and torpedo launchers.
- Doubloons
- 18,000
At a glance
The numbers that shape the ship
- Hit points
- 80,700
- Maximum speed
- 28.2 knots
- Surface detection
- 15.9 km
- Main battery range
- 22.3 km
- Main battery reload
- 28.0 s
Damage comparison
Published maximum per hit
Bars are normalized only against this ship's highest listed hit. They are not salvo damage, expected damage or DPM.
Handling, concealment and protectionOverview
Handling
- Maximum speed
- 28.2 knots
- Turning circle radius
- 880 m
- Rudder shift time
- 14.1 s
Concealment
- Surface detection
- 15.9 km
- Air detection
- 10.0 km
- Submarine detection
- 10.0 km
Survivability
- Hit points
- 80,700
- Torpedo damage reduction
- 37 %
Published armour thickness
Only positive values supplied by the API are shown.
- Overall published range
- 19–508 mm
Weapons and payloadsArmament
Surface armament
Main battery
- Maximum range
- 22.3 km
- Reload time
- 28.0 s
- Rate of fire
- 2.1 rounds/min
- 180° turn time
- 35.0 s
- Maximum dispersion
- 244 m
Shells
Damage is the API's published maximum for one shell hit.
410 mm HE Type 01
HE- Maximum damage per hit
- 6,500
- Fire chance
- 30.0 %
- Muzzle velocity
- 834 m/s
- Shell mass
- 1,016 kg
410 mm AP/APC Type 01
AP- Maximum damage per hit
- 12,750
- Muzzle velocity
- 834 m/s
- Shell mass
- 1,020 kg
Gun layout
- Mount
- 410 mm/50 10th Year Type Mod.A in a twin-gun turret
- Mounts
- 4
- Barrels each
- 2
Automatic armament
Secondary battery
- Maximum range
- 7.0 km
- Mount
- 155 mm HE Type0
- Maximum damage per hit
- 2,600
- Fire chance
- 10.0 %
- Rate of fire
- 5.0 rounds/min
- Muzzle velocity
- 925 m/s
- Mount
- 100 mm HE Type 98
- Maximum damage per hit
- 1,700
- Fire chance
- 6.0 %
- Rate of fire
- 20.0 rounds/min
- Muzzle velocity
- 1,000 m/s
Underwater armament
Torpedoes
Type 93
- Maximum range
- 20.0 km
- Maximum damage per hit
- 20,966
- Reload time
- 150 s
- Speed
- 62 knots
- Detectability
- 2.5 km
- 180° turn time
- 7.2 s
Torpedo-tube layout
- Mount
- 610 mm Quad
- Mounts
- 2
- Tubes each
- 4
Anti-aircraft defence
- Aura
- 25 mm/60 Type 96 on a single mount
- Calibre
- 25 mm
- Mounts
- 18
- Aura
- 25 mm/60 Type 96 on a twin mount
- Calibre
- 25 mm
- Mounts
- 24
- Aura
- 25 mm/60 Type 96 on a triple mount
- Calibre
- 25 mm
- Mounts
- 12
- Aura
- 100 mm/65 Type 98 on a Model A mount
- Calibre
- 100 mm
- Mounts
- 8
Modules, hull and progressionTechnical data
Default hull
- Hull hit points
- 80,700
- Main-battery barrels
- 4
- Secondary barrels
- 11
- Torpedo tubes
- 2
- AA mounts
- 62
Engine
- Published maximum speed
- 28.2 knots
Fire control
Module research tree
Names, research prices and defaults are reported directly by the API.
Type9 mod. 1
Default- Type
- Suo
410 mm/50 10th Year Type Mod.A in a twin-gun turret
Default- Type
- Artillery
Propulsion: 145,000 hp
Default- Type
- Engine
Iwami B.
Default- Type
- Hull
Type90 mod. 1
Default- Type
- Torpedoes
Compatible upgrades
Official modernization descriptions and listed purchase prices. Effects still depend on the slot and configuration used in game.
Propulsion Modification 1
ModernizationReduces time to full speed
- Credits
- 1,000,000
Torpedo Tubes Modification 1
Modernization- Credits
- 500,000
Concealment System Modification 1
Modernization- Credits
- 2,000,000
Main Armaments Modification 1
Modernization- Credits
- 125,000
Torpedo Tubes Modification 2
Modernization- Credits
- 3,000,000
Aiming Systems Modification 1
Modernization- Credits
- 500,000
Damage Control System Modification 2
Modernization- Credits
- 1,000,000
Torpedo Lookout System
Modernization- Credits
- 2,000,000
Main Battery Modification 3
Modernization- Credits
- 3,000,000
Main Battery Modification 2
Modernization- Credits
- 500,000
Damage Control System Modification 1
Modernization- Credits
- 250,000
Steering Gears Modification 1
Modernization- Credits
- 1,000,000
Secondary Battery Modification 1
Modernization- Credits
- 500,000
Auxiliary Armaments Modification 1
Modernization- Credits
- 125,000
Gun Fire Control System Modification 2
Modernization- Credits
- 3,000,000
AA Guns Modification 1
Modernization- Credits
- 500,000
- Available module groups
- 10
- Compatible upgrades
- 16
- Upgrade slots
- 6
- Published battle levels
- 9–11
Cross-nation comparison
Ships that fill a similar slot
Closest same-tier, same-class matches from other nations, ranked by published base statistics.
