Ship Database
Tier IX Cruiser

Germany

Roon

Following the denunciation of the Treaty of Versailles and the signing of the Anglo-German Naval Agreement, Germany went on with the development of the Deutschland-class "ironclads." More than twenty draft designs were considered. According to the requirements, their speed should have exceeded 34 knots, and one way to achieve that speed was to reduce the...

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Following the denunciation of the Treaty of Versailles and the signing of the Anglo-German Naval Agreement, Germany went on with the development of the Deutschland-class "ironclads." More than twenty draft designs were considered. According to the requirements, their speed should have exceeded 34 knots, and one way to achieve that speed was to reduce the caliber of the main guns to 203 mm, especially since a 203 mm triple-gun turret had already been designed. The best option would have been to deploy three such turrets instead of two turrets with 283 mm guns.

Credits
13,700,000
Official profile image of Roon

At a glance

The numbers that shape the ship

Hit points
43,400
Maximum speed
32.5 knots
Surface detection
14.0 km
Main battery range
16.2 km
Main battery reload
13.0 s

Combat envelope

Range and detection

Scale: 20 km

Every bar uses the same 20 km scale. Surface detection is a visibility threshold, not a weapon range.

  • Surface detection14 km
  • Main battery16.2 km
  • Secondary battery8 km
  • Torpedoes6 km

Damage comparison

Published maximum per hit

Ship-relative

Bars are normalized only against this ship's highest listed hit. They are not salvo damage, expected damage or DPM.

  • HE · 203 mm Spr.Gr. L/4.7 Kz. 2,500
  • AP · 203 mm P.Spr.Gr. L/4.4 5,900
  • Torpedo · G7a T1 13,700
Handling, concealment and protectionOverview

Handling

Maximum speed
32.5 knots
Turning circle radius
780 m
Rudder shift time
16.0 s
Maneuverability API rating 48

Concealment

Surface detection
14.0 km
Air detection
8.0 km
Submarine detection
8.0 km
Concealment API rating 47

Survivability

Hit points
43,400
Torpedo damage reduction
13 %
Survivability API rating 59

Published armour thickness

Only positive values supplied by the API are shown.

Overall published range
16–150 mm
Weapons and payloadsArmament

Surface armament

Main battery

Artillery API rating 79
Maximum range
16.2 km
Reload time
13.0 s
Rate of fire
4.6 rounds/min
180° turn time
30.0 s
Maximum dispersion
144 m

Shells

Damage is the API's published maximum for one shell hit.

203 mm Spr.Gr. L/4.7 Kz.
HE
Maximum damage per hit
2,500
Fire chance
13.0 %
Muzzle velocity
925 m/s
Shell mass
122 kg
203 mm P.Spr.Gr. L/4.4
AP
Maximum damage per hit
5,900
Muzzle velocity
925 m/s
Shell mass
122 kg
Gun layout
Mount
203 mm/60 SK C/34 in a turret
Mounts
3
Barrels each
3

Automatic armament

Secondary battery

Maximum range
8.0 km
Mount
150 mm Spr.Gr. L/4.5
Maximum damage per hit
1,700
Fire chance
8.0 %
Rate of fire
8.0 rounds/min
Muzzle velocity
875 m/s
Mount
150 mm Spr.Gr. L/4.5
Maximum damage per hit
1,700
Fire chance
8.0 %
Rate of fire
8.0 rounds/min
Muzzle velocity
875 m/s
Mount
105 mm Spr.Gr. Kz.
Maximum damage per hit
1,200
Fire chance
5.0 %
Rate of fire
17.9 rounds/min
Muzzle velocity
900 m/s

Underwater armament

Torpedoes

Torpedoes API rating 16

G7a T1

Maximum range
6.0 km
Maximum damage per hit
13,700
Reload time
90 s
Speed
64 knots
Detectability
1.3 km
180° turn time
7.2 s
Torpedo-tube layout
Mount
533 mm Vierling
Mounts
2
Tubes each
4

Anti-aircraft defence

AA defence API rating 68
Aura
20 mm/65 C/38 on an L/30 single mount
Calibre
20 mm
Mounts
10
Aura
37 mm/69 Flak M42 on an LM/42 single mount
Calibre
37 mm
Mounts
6
Aura
37 mm/69 Flak M42 on an LM/42 mount
Calibre
37 mm
Mounts
7
Aura
105 mm/65 SK C/33 on a Dop. L. C/37 mount
Calibre
105 mm
Mounts
6
Modules, hull and progressionTechnical data

Default hull

Hull hit points
43,400
Main-battery barrels
3
Secondary barrels
11
Torpedo tubes
2
AA mounts
29

Engine

Published maximum speed
32.5 knots

Fire control

Module research tree

Names, research prices and defaults are reported directly by the API.

203 mm/60 SK C/34 in a turret

Default
Type
Artillery
Purchase
900,000 credits
Next modules
1

203 mm/60 SK C/34 in a turret

Type
Artillery
Research
21,000 XP
Purchase
2,000,000 credits

FKS Typ 9 Mod. 1

Default
Type
Suo
Purchase
1,000,000 credits
Next modules
1

FKS Typ 9 Mod. 2

Type
Suo
Research
25,000 XP
Purchase
2,300,000 credits

Roon (A)

Default
Type
Hull
Purchase
1,300,000 credits
Next modules
1

Roon (B)

Type
Hull
Research
45,000 XP
Purchase
3,400,000 credits
Next ships
1

Propulsion: 155,000 hp

Default
Type
Engine
Purchase
840,000 credits

G7a T1

Default
Type
Torpedoes
Purchase
260,000 credits

Compatible upgrades

Official modernization descriptions and listed purchase prices. Effects still depend on the slot and configuration used in game.

Propulsion Modification 1

Modernization

Reduces 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

Steering Gears Modification 2

Modernization

Credits
2,000,000

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

Next ships

Research costs published in this ship's official progression data.

Ship
Hindenburg
Research cost
238,000 XP
Available module groups
10
Compatible upgrades
17
Researchable next ships
1
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.

U.S.S.R.

Riga

HP
47,300
Speed
33.5 kn
Guns
16.4 km
Open comparison

U.S.A.

Buffalo

HP
42,500
Speed
33 kn
Guns
14.4 km
Open comparison

France

Brest

HP
50,100
Speed
31.5 kn
Guns
16.6 km
Open comparison