Ship Database
Tier X Cruiser Special

U.S.A.

Puerto Rico B

After the failure of the second London Naval Treaty but before the outbreak of World War II, the United States began preliminary design works with the intention of building ships specifically tailored for countering cruisers. In 1938, the U.S. Navy High Command provided technical specifications to initiate the preliminary development of cruisers armed...

Read full ship history

After the failure of the second London Naval Treaty but before the outbreak of World War II, the United States began preliminary design works with the intention of building ships specifically tailored for countering cruisers. In 1938, the U.S. Navy High Command provided technical specifications to initiate the preliminary development of cruisers armed with six 305 mm guns and twelve 203 mm guns. Further development resulted in the creation of several draft designs for cruisers equipped with 305 mm main battery guns. Among the designs, the largest and most heavily armed ship featured four triple-gun main battery turrets.

Doubloons
41,500
Official profile image of Puerto Rico B

At a glance

The numbers that shape the ship

Hit points
71,650
Maximum speed
33.5 knots
Surface detection
16.1 km
Main battery range
18.8 km
Main battery reload
22.0 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 detection16.1 km
  • Main battery18.8 km
  • Secondary battery7.3 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 · 305 mm HE Mk17 mod. 1 4,300
  • AP · 305 mm AP Mk18 mod. 1 8,900
Handling, concealment and protectionOverview

Handling

Maximum speed
33.5 knots
Turning circle radius
910 m
Rudder shift time
15.9 s
Maneuverability API rating 48

Concealment

Surface detection
16.1 km
Air detection
10.0 km
Submarine detection
10.0 km
Concealment API rating 33

Survivability

Hit points
71,650
Torpedo damage reduction
28 %
Survivability API rating 91

Published armour thickness

Only positive values supplied by the API are shown.

Overall published range
16–325 mm
Weapons and payloadsArmament

Surface armament

Main battery

Artillery API rating 87
Maximum range
18.8 km
Reload time
22.0 s
Rate of fire
2.7 rounds/min
180° turn time
30.0 s
Maximum dispersion
248 m

Shells

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

305 mm HE Mk17 mod. 1
HE
Maximum damage per hit
4,300
Fire chance
27.0 %
Muzzle velocity
808 m/s
Shell mass
462 kg
305 mm AP Mk18 mod. 1
AP
Maximum damage per hit
8,900
Muzzle velocity
762 m/s
Shell mass
517 kg
Gun layout
Mount
305 mm/50 Mk.8 in a turret
Mounts
4
Barrels each
3

Automatic armament

Secondary battery

Maximum range
7.3 km
Mount
127 mm HE Mk41
Maximum damage per hit
1,800
Fire chance
9.0 %
Rate of fire
15.0 rounds/min
Muzzle velocity
808 m/s

Anti-aircraft defence

AA defence API rating 87
Aura
20 mm Oerlikon on a Mk.4 mount
Calibre
20 mm
Mounts
26
Aura
40 mm/56 Bofors on a Mk.2 mount
Calibre
40 mm
Mounts
16
Aura
127 mm/54 Mk.16 on a Mk.41 mount
Calibre
127 mm
Mounts
8
Modules, hull and progressionTechnical data

Default hull

Hull hit points
71,650
Main-battery barrels
4
Secondary barrels
8
AA mounts
50

Engine

Published maximum speed
33.5 knots

Fire control

Module research tree

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

Mk10 mod. 1

Default
Type
Suo

Puerto Rico B

Default
Type
Hull

305 mm/50 Mk.8 in a turret

Default
Type
Artillery

Propulsion: 212,000 hp

Default
Type
Engine

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

Concealment System Modification 1

Modernization

Credits
2,000,000

Main Armaments Modification 1

Modernization

Credits
125,000

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
Available module groups
10
Compatible upgrades
15
Upgrade slots
6
Published battle levels
10–11

Cross-nation comparison

Ships that fill a similar slot

Closest same-tier, same-class matches from other nations, ranked by published base statistics.

Germany

Hildebrand

HP
63,650
Speed
34 kn
Guns
18.5 km
Open comparison

France

Amiral Lartigue

HP
63,650
Speed
34 kn
Guns
21.2 km
Open comparison

U.S.S.R.

Stalingrad

HP
72,450
Speed
35 kn
Guns
20.4 km
Open comparison