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Battleship | U.S.A. | Tier IX
Tech Tree Position
Purchase priceSpecial Doubloons
Hit Points68,100 
Main Battery
203 mm/55 RF Mk.16 in a turret3 х 4 pcs.
Rate of Fire6.67 shots/min.
Reload Timesec.
Rotation Speeddeg./sec.
180 Degree Turn Time30 sec.
Firing Range18.48 km.
Maximum Dispersion203 m.
HE Shell203 mm HE/HC Mk25 
Maximum HE Shell Damage2,800 
Chance of Fire on Target Caused by HE Shell14 %
Initial HE Shell Velocity823 m./s.
HE Shell Weight118 kg.
AP Shell203 mm AP Mk21 
Maximum AP Shell Damage5,000 
Initial AP Shell Velocity762 m./s.
AP Shell Weight152 kg.
Secondary Armament #1
127 mm/38 Mk.12 on a Mk.32 mount10 х 2 pcs.
Firing Range6.95 km.
Rate of Fire10 shots/min.
Reload Timesec.
HE Shell127 mm HE Mk32 
Maximum HE Shell Damage1,800 
Initial HE Shell Velocity792 m./s.
Chance of Fire on Target Caused by HE Shell%
AA Defense
127 mm/38 Mk.12 on a Mk.32 mount10 х 2 pcs.
. . . Average Damage per Second151 
. . . Firing Range5.01 km.
76.2 mm/50 Mk.22 on a Mk.33 mount12 х 2 pcs.
. . . Average Damage per Second249.6 
. . . Firing Range3.99 km.
76.2 mm/50 Mk.22 on a Mk.33 mount4 х 2 pcs.
. . . Average Damage per Second83.2 
. . . Firing Range3.99 km.
20 mm Oerlikon on a Mk.24 mount24 х 2 pcs.
. . . Average Damage per Second146.4 
. . . Firing Range2.01 km.
Maximum Speed32.5 knot
Turning Circle Radius930 m.
Rudder Shift Time17.2 sec.
Surface Detectability Range15.86 km.
Air Detectability Range11.66 km.
Battle Levels

Illinois — American special premium Tier IX battleship.

In the 1940s, several projects to modernize and reconstruct battleships were developed—from hybrid aircraft carriers to artillery training battleships. One of them was the conversion of the last two Iowa-class battleships into escort ships for aircraft carriers. According to the project, turrets with rapid-firing 203 mm guns were to be mounted on the main battery barbettes; however, this plan never materialized.

Illinois was first released for sale on 22 March 2023, and is available in the Research Bureau for 51,000Research Points.


Main Battery Guns Rate of Fire
180° Turn Time
Maximum Dispersion
Maximum HE Shell Damage
Chance of Fire on Target Caused by HE Shell
Maximum AP Shell Damage
Research price
Purchase price
203 mm/55 RF Mk.16 in a turret6.7302032,800145,000 00
Hull Hit Points
Main Turrets
Secondary Gun Turrets
AA Mounts
Torpedo Tubes
Hangar Capacity
Research price
Purchase price
Illinois68,1001643931024/16/10 00
Maximum Firing Range
Research price
Purchase price
Mk9 mod. 10 00
Engine Maximum Speed
Research price
Purchase price
Propulsion: 212,000 hp32.5 00

Compatible Upgrades

 Slot 1 
Main Armaments Modification 1
Auxiliary Armaments Modification 1
Magazine Modification 1
Damage Control Party Modification 1
 Slot 2 
Damage Control System Modification 1
Engine Room Protection
 Slot 3 
Main Battery Modification 2
Secondary Battery Modification 1
AA Guns Modification 1
Artillery Plotting Room Modification 1
 Slot 4 
Damage Control System Modification 2
Propulsion Modification 1
Steering Gears Modification 1
Airstrike Modification 1
 Slot 5 
Torpedo Lookout System
Concealment System Modification 1
Ship Consumables Modification 1
 Slot 6 
Main Battery Modification 3
Artillery Plotting Room Modification 2
Auxiliary Armaments Modification 2

Player Opinion


Warning. The data presented in the AA Defense sidebar section may be incorrect.
Refer to the in-game Port screens for more useful data.

Illinois is an American Tier IX premium battleship armed with twelve rapid-fire cruiser-caliber guns in place of traditional battleship weaponry. The first of its kind in-game, Illinois offers consistent damage output on a much more durable hull compared to a cruiser, but at the expense of the individual salvo power of a normal battleship. Captains of both cruisers and battleships will find aspects of her play style that appeal to each of them.

Survivability & Maneuverability

As a proposed conversion of one of the unfinished Iowa-class battleships, Illinois unsurprisingly shares her hull with Tier IX tech tree American battleship Iowa. She shares Iowa’s base hull, which results in an HP pool of 68,100. She has 32 mm extremities, which can bounce all AP up to 460 mm when angled, and a 38 mm midsection. Unlike Iowa’s waterline citadel, Illinois’ sits below the waterline, making her resilient to citadel damage if caught broadside. Like most American battleships, Illinois features a large superstructure that can potentially arm AP salvos, but as long as she stays sufficiently angled, most AP shells will inflict minimal damage.

Incoming high explosive salvos pose the biggest threat to her, especially over an extended period of time. Although her 38 mm midsection can resist most cruiser-caliber HE shells, most of them will instead hit her large superstructure, and can deal considerable damage even when it is saturated. Torpedoes are also a major threat, as Illinois’ long hull and average agility mean that she will struggle to dodge incoming torpedoes unless they are spotted early by teammates. To combat these dangers, Illinois features the improved Repair Party unique to American battleships, healing back 0.66% HP per second instead of the standard 0.5%. Despite her large size, Illinois features a high top speed of 33 knots, allowing the player to quickly reposition between — or retreat from — engagements.


Illinois’ most unique feature by far is her main battery of twelve 203 mm guns. Although her turrets are similar to those carried by Des Moines or Annapolis, her guns are more akin to Buffalo’s. Featuring a base reload of 9 seconds, Illinois sacrifices individual salvo strike power for more consistent damage output, utilizing a healthy mix of both armor-piercing and high-explosive shells. Despite having cruiser-caliber guns, Illinois lacks cruiser dispersion, instead using battlecruiser dispersion. Her salvos will be more consistent than normal battleships, but not as accurate as most cruisers. However, Illinois has access to the Artillery Plotting Room Modification 2 : -11% main battery dispersion. upgrade that can improve this further.

Because she lacks the devastating AP strike potential of most battleships, Illinois must use both ammunition choices depending on the situation. Her fire-starting abilities can help whittle down enemy battleships before switching to AP at close range, which shares the same improved penetration angles as the American heavy cruisers. Compared to Iowa, Illinois also has slightly improved firing angles for her turrets due to their smaller size, and possesses a faster 30-second 180° traverse time. She features a decent anti-aircraft battery with higher mid-range DPS than Iowa, translating into an extra plane or two shot down.


For captains unfamiliar with American heavy cruisers or battleships, Illinois can pose a problem as to how to play her. Players unfamiliar with either line might attempt to play her like a normal battleship despite lacking the impulse damage and range of one. Illinois should ideally be played like a larger Des Moines, taking up positions around islands where she can effectively whittle down the enemy as they attempt to push her. If there is inadequate island cover on the map, an equally effective play style is to angle away from the enemy and pour fire onto them as they push. Her battleship hull makes her extremely resilient to AP fire in this position while being able to maximize her own damage output in return. In this position, however, captains should always be aware of their surroundings, as Illinois’ large hull and average concealment mean that she has a far harder time disengaging and slipping away from the enemy than a cruiser. Due to her below average HP pool, players should let heavier battleships take the lead in a friendly push, while utilizing her AP shells on enemy broadsides wherever possible.

If captains can master these techniques, Illinois becomes a very effective ship thanks to her damage per minute-focused armament, which offers a unique spin on normal battleship gameplay.


  • High damage per minute
  • AP shells have improved penetration angles
  • Improved dispersion versus other battleships
  • Good top speed
  • Good concealment
  • Improved Repair Party


  • Very low HP for a Tier IX battleship
  • Low caliber guns means devastating AP salvos are extremely unlikely
  • Fragile gun turrets
  • Short main battery range
  • Large hull with mediocre agility


As a premium ship, Illinois has no module upgrades to research.

Optimal Configuration

For an in-depth review, check out Your_SAT_Score's player guide.


The recommended upgrades are:

Commander Skills


Illinois equips the following consumables:


As a premium ship, Illinois comes with Default permanent camouflage and a set of permanent combat bonuses.


Note: Use of the Juliet Charlie signal makes detonation impossible.


Historical Info

Historical Gallery



Ship Change Log

See here for links to Update notes.

  • Available for testing by supertesters in the game starting from Update 12.0.

Testing Changes

  • DevBlog 398:
    • Preliminary characteristics.
  • DevBlog 413:
    • Main battery reload time reduced from 10 to 9 s.
    • Main battery dispersion formula improved from standard battleship to that of a battlecruiser/large cruiser.
    • HP reduced from 81,100 to 68,100.
    • Reload time of secondary armament guns increased from 4 to 6 s.
    • Secondary battery accuracy worsened from that of Georgia to that of a standard ship.
  • Update 12.2:
    • Added to the Research Bureau section of the Armory for 51,000 Research Points.

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