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Battleship | U.K. | Tier IX
Tech Tree Position
St. Vincent
Research price180000 exp
Purchase price15,000,000 Credits
Hit Points66,900 
Main Battery
419 mm/45 Mk.I on a Mk.I mount3 х 3 pcs.
Rate of Fire2.03 shots/min.
Reload Time29.5 sec.
Rotation Speeddeg./sec.
180 Degree Turn Time30 sec.
Firing Range17.9 km.
Maximum Dispersion213 m.
HE Shell419 mm HE Mk Ia 
Maximum HE Shell Damage6,150 
Chance of Fire on Target Caused by HE Shell47 %
Initial HE Shell Velocity792 m./s.
HE Shell Weight995 kg.
AP Shell419 mm AP Mk IIa 
Maximum AP Shell Damage13,050 
Initial AP Shell Velocity747 m./s.
AP Shell Weight1157 kg.
Secondary Armament #1
152 mm/50 BL Mk.XXII on a Mk.XVIII mount6 х 2 pcs.
Firing Range6.95 km.
Rate of Fireshots/min.
Reload Time12 sec.
HE Shell152 mm HE Mk V 
Maximum HE Shell Damage2,150 
Initial HE Shell Velocity884 m./s.
Chance of Fire on Target Caused by HE Shell%
Secondary Armament #2
113 mm/45 QF Mk.I/III on an RP10 Mark II BD mount8 х 2 pcs.
Firing Range6.95 km.
Rate of Fire12 shots/min.
Reload Timesec.
HE Shell113 mm HE 5crh 
Maximum HE Shell Damage1,700 
Initial HE Shell Velocity746 m./s.
Chance of Fire on Target Caused by HE Shell%
Torpedo Tubes
622 mm PR Mk II2 х 1 pcs.
Rate of Fire1.09 shots/min.
Reload Time55 sec.
Rotation Speed12 deg./sec.
180 Degree Turn Time15 sec.
Torpedo622 mm Mk I 
Maximum Damage29,367 
Torpedo Speed67 knot
Torpedo Range9.99 km.
AA Defense
113 mm/45 QF Mk.I/III on an RP10 Mark II BD mount8 х 2 pcs.
. . . Average Damage per Second71.2 
. . . Firing Range5.01 km.
40 mm/56 OQF Mk.1/2 on a Mk.IV mount10 х 2 pcs.
. . . Average Damage per Second227 
. . . Firing Range3.51 km.
20 mm Oerlikon Mk.I on a Mk.IIA mount10 х 1 pcs.
. . . Average Damage per Second36 
. . . Firing Range2.01 km.
40 mm/39 Vickers QF Mk.VIII on a Mk.VII mount4 х 4 pcs.
. . . Average Damage per Second51.6 
. . . Firing Range2.49 km.
Maximum Speed32 knot
Turning Circle Radius910 m.
Rudder Shift Time23.3 sec.
Surface Detectability Range14.88 km.
Air Detectability Range11.56 km.
Battle Levels

Duncan — British Tier IX battleship.

The further development of the 1920 battlecruiser became project G3. It differed from its predecessor by having a smaller main gun caliber of 419 mm, shorter length, and smaller displacement. In early 1921, the project was redesigned to enhance the armor at the expense of its speed and main caliber characteristics. In October of the same year, the construction of four ships under this project was ordered, but it was suspended amid the start of the Washington Naval Conference. Following its results, the construction order was canceled.


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
419 mm/45 Mk.I on a Mk.I mount2302136,1504713,050 01,500,000
Hull Hit Points
Main Turrets
Secondary Gun Turrets
AA Mounts
Torpedo Tubes
Hangar Capacity
Research price
Purchase price
Duncan (A)66,9001041938/610/10/4/82 02,250,000
Duncan (B)75,2001041938/618/10/4/82 60,0005,100,000
Torpedoes Rate of Fire
Torpedo Tubes Reload Time
180° Turn Time
Maximum Damage
Torpedo Speed
Torpedo Range
Research price
Purchase price
622 mm Mk I1.1551529,3666710 01,500,000
Maximum Firing Range
Research price
Purchase price
Mk IX mod. 10 01,500,000
Mk IX mod. 20 40,0003,400,000
Engine Maximum Speed
Research price
Purchase price
Propulsion: 160,000 hp32 01,500,000

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 Boost Modification 1
Defensive AA Fire Modification 1
Engine Room Protection
 Slot 3 
Main Battery Modification 2
Secondary Battery Modification 1
AA Guns Modification 1
Aiming Systems Modification 1
Torpedo Tubes Modification 1
 Slot 4 
Damage Control System Modification 2
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
Torpedo Tubes Modification 2
Gun Fire Control System 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.

Duncan is the Tier IX ship of the British battlecruiser tech tree. She further continues the emphasis on speed and firepower, with improvements to survivability in the form of the Specialized Repair TeamsWhile active, restores a percentage of the ship's health points each second. consumable.


Duncan carries nine 419 mm guns in three triple turrets. These guns have a range of 19.7 km. Her AP shells have good alpha damage, and can overmatch up to 27 mm of armor, which is present on many cruisers in her matchmaking spread. They also have a shortened fuse time of 0.015 s, which is useful against cruisers as it reduces her chance of overpenetrating their armor. Her HE shells have a 47% fire chance, and 70 mm of penetration.

Duncan’s guns are accurate, with good horizontal and vertical dispersion values. She uses the battlecruiser dispersion formula but with a lower sigma value of 1.6. The guns have an average reload time of 29.5 seconds, which can be reduced to 26 seconds with the Main Battery Modification 3 : -12% main battery loading time. / -13% main battery traverse speed. upgrade.

Her turrets have a fast 180-degree turn time of 30 seconds. Her turret layout is unique, as her third turret is positioned in the middle of her superstructure. This limits her rearward firing angles and reduces her effectiveness when kiting, but gives her comfortable forward firing angles.

Duncan carries two single-launch torpedo launchers on the sides of her hull, one per side. They have a 55-second reload time, 10 km range, and a maximum damage of 29,367. Her torpedo tubes are fixed, but have the torpedo turning mechanic. Immediately after launch, they will perform an S-turn to reach the selected heading, before arming and proceeding in a straight line. This allows them to fire at much wider angles, but the arming time and minimum arming distance are longer as a result. In addition, their “traverse speed” is half as fast as those of “real” launchers, which can cause issues at close range or during drive-bys.


Duncan’s hull is thinly armored, with her bow and stern covered with 25 mm plating. This allows every ship with a gun caliber of 380 mm or higher to overmatch it. Her deck armor is thicker at 32 mm, but most cruiser HE shells will still penetrate it. Duncan’s citadel is vulnerable, as it is large and sits high out of the water. Captains must be careful when showing broadside against enemy battleships and large cruisers.

Duncan gets access to the same Specialized Repair Teams consumable found on Nelson and Yukon. It has a short action time of 20 seconds, and heals up to 2% of her HP per second, including 60% of any non-citadel damage taken. As she only heals 10% of citadel damage (including torpedoes that hit her torpedo protection), it is vital to not take citadel damage and avoid torpedoes as much as possible in order to maximize her Repair Party efficiency. Duncan also has one less charge of her heal than normal.

Her minimum surface concealment is very good at 12.1 km. She has an average HP pool of 75,200, but her torpedo damage reduction is low at only 22.9%. With her excellent surface concealment and thin armor, Duncan captains should play her at medium ranges.


Duncan is a fast battleship, with a top speed of 32 knots, that can be increased to 36.3 knots with the Engine BoostWhile active, increases a ship's speed by a fixed percentage. consumable and Sierra Mike signal. Her rudder shift time of 16.6 s is average, however her 910 m turning radius is quite poor. Her high speed allows her to quickly and easily reposition when needed.

Duncan’s Engine Boost consumable comes with 3 charges, provides 8% more speed, lasts 120 seconds, and has a 120 second cooldown.

Duncan cannot mount Propulsion Modification 1 Reduces time to full speed: -50% to time for reaching full power. / Increases engine power when the ship starts moving., but gets the same enhanced acceleration found on the British destroyer and light cruiser lines. This allows her to accelerate forward very quickly to high speeds, but she takes longer to slow down.


Duncan’s AA DPS is relatively poor overall, but she has a high mid-range DPS of 504, which increases to a best-in-tier 756 DPS with the Defensive AA FireWhile active, the damage per second of large caliber anti-aircraft guns is increased. consumable. She only produces four flak clouds that deal low damage. Her high mid range DPS can shoot down planes but cannot stop strikes entirely. Grouping with allied ships to overlap anti-aircraft auras is recommended in games with carriers

Duncan only has 3 charges of her Defensive AA Fire consumable, so they should be saved for torpedo bombers and AP dive bombers, as these armaments can cause damage she cannot fully heal.

Battle Performance:

Duncan is a mid-range battleship that likes to play on flanks and punish broadside enemies, much like the other tech tree British battlecruisers. Her good speed allows her to reposition for better shots and react to the situation. Her low concealment allows her to play closer to enemies, and provide crossfire on enemy battleships and cruisers. With her accurate guns and 27 mm overmatch, players should mainly fire AP, only using HE on angled targets and destroyers. Her torpedoes are best used for deterring suicide rushes and when fighting targets at closer ranges.

While an improvement over her predecessors, her 25 mm bow and stern are still susceptible to battleship AP overmatch, and she should avoid drawing too much attention to herself. Her poor turning radius, low torpedo damage protection, and vulnerable citadel mean players should not seek close-quarters engagements too early. The addition of her Specialized Repair Teams consumable allows Duncan to take sustained damage and easily deal with fires, but captains should avoid taking citadel or torpedo damage.


  • Accurate guns with battlecruiser dispersion
  • Shorter AP fuse time
  • Fast turret traverse
  • Torpedoes, with the torpedo turning mechanic\
  • Strong medium-range AA DPS
  • Fast, with improved acceleration
  • Excellent concealment
  • Access to Specialized Repair TeamsWhile active, restores a percentage of the ship's health points each second. consumable
  • Access to Defensive AA FireWhile active, the damage per second of large caliber anti-aircraft guns is increased. consumable
  • Access to Engine BoostWhile active, increases a ship's speed by a fixed percentage. consumable


  • Thin, easily overmatched bow and stern plating
  • 32 mm deck plating
  • Vulnerable citadel
  • Low torpedo damage protection
  • Overall underwhelming AA DPS and low flak count
  • Large turning radius with an average rudder shift
  • Limited Defensive AA Fire charges
  • Fewer charges of her heal


Researchable upgrades for Duncan:

  1. Hull: Upgrade to Hull (B) for improved survivability and maneuverability. Research of this module unlocks progression to St. Vincent.
  2. Gun Fire Control System: Upgrade to Mk IX Mod. 2 for an extra 10% range on the main battery.

Optimal Configuration


The recommended upgrades are:

Commander Skills

Owing to Duncan's Specialized Repair Teams consumable, Furious is a viable alternative to Fire Prevention Expert to speed up her reload while on fire.


Duncan equips the following consumables:


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 0.11.4.

Testing Changes

  • DevBlog 310:
    • Preliminary characteristics.
  • DevBlog 328:
    • Main battery sigma parameter increased from 1.5 to 1.6.
    • Main battery firing range with the stock Gun Fire Control System module increased from 17.2 to 17.9 km.
    • Main battery firing range with the researchable Gun Fire Control System module increased from 18.9 to 19.7 km.
  • DevBlog 332:
    • Maximum torpedo damage increased from 21,064 to 29,367.
    • Torpedo arming distance reduced from 1500 to 540 m. Torpedo launch sectors in the direction to the bow of the ship were slightly reduced as well.
  • DevBlog 336:
    • Main battery reload time increased from 30 to 31 s.
  • Update 0.11.6:
    • Available in early access as 1 of 70 random bundles available in the armory for 1000 doubloons each.
  • Update 0.11.7:
    • Fixed a bug that caused some secondary battery mounts to shoot at incorrect angles; the firing sectors of the affected turrets have been slightly reduced at short ranges.
  • Introduced into the game as a researchable ship in Update 0.11.8.
  • Update 0.11.8
    • Minor fixes to geometry and textures of the ship.
  • Update 0.11.10:
    • Minor fixes to the geometry and textures of the ship.
  • Update 12.3:
    • Fixed the geometry and textures of the ship.
  • Update 13.1:
    • Main Battery reload time decreased from 31 to 29.5 s.
    • Repair Party consumable reload time increased from 80 to 100 s.

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