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Puerto Rico
Cruiser | U.S.A. | Tier X
Tech Tree Position
Purchase price34,650 Credits
Hit Points71,650 
Main Battery
305 mm/50 Mk.8 in a turret4 х 3 pcs.
Rate of Fire2.73 shots/min.
Reload Time22 sec.
Rotation Speeddeg./sec.
180 Degree Turn Time30 sec.
Firing Range18.81 km.
Maximum Dispersion248 m.
HE Shell305 mm HE Mk17 mod. 1 
Maximum HE Shell Damage4,300 
Chance of Fire on Target Caused by HE Shell27 %
Initial HE Shell Velocity808 m./s.
HE Shell Weight462.3 kg.
AP Shell305 mm AP Mk18 mod. 1 
Maximum AP Shell Damage8,900 
Initial AP Shell Velocity762 m./s.
AP Shell Weight517 kg.
Secondary Armament #1
127 mm/54 Mk.16 on a Mk.41 mount8 х 2 pcs.
Firing Range7.3 km.
Rate of Fire15 shots/min.
Reload Timesec.
HE Shell127 mm HE Mk41 
Maximum HE Shell Damage1,800 
Initial HE Shell Velocity808 m./s.
Chance of Fire on Target Caused by HE Shell%
AA Defense
127 mm/54 Mk.16 on a Mk.41 mount8 х 2 pcs.
. . . Average Damage per Second125.6 
. . . Firing Range5.19 km.
40 mm/56 Bofors on a Mk.2 mount16 х 4 pcs.
. . . Average Damage per Second254.4 
. . . Firing Range3.51 km.
20 mm Oerlikon on a Mk.4 mount26 х 1 pcs.
. . . Average Damage per Second93.6 
. . . Firing Range2.01 km.
Maximum Speed33.5 knot
Turning Circle Radius910 m.
Rudder Shift Time15.9 sec.
Surface Detectability Range16.06 km.
Air Detectability Range11.16 km.
Battle Levels

Puerto Rico — American Tier X cruiser.

The design project that preceded the creation of the "large Alaska-class cruisers". The CA2-D variant was designed with twelve 305 mm main battery guns.

Puerto Rico was the reward for the first Dockyard event during Christmas 2019, and returned as the reward for the Dockyard event starting in Update 0.11.7. She has not been available outside those two Dockyard events. (A few were available during a charity event in early 2022, where successful bidders were in the $800+ range.)


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
305 mm/50 Mk.8 in a turret2.7302484,300278,900 00
Hull Hit Points
Main Turrets
Secondary Gun Turrets
AA Mounts
Torpedo Tubes
Hangar Capacity
Research price
Purchase price
Puerto Rico71,650163254826/16/8 00
Maximum Firing Range
Research price
Purchase price
Mk10 mod. 10 00
Engine Maximum Speed
Research price
Purchase price
Propulsion: 212,000 hp33.5 00

Compatible Upgrades

 Slot 1 
Main Armaments Modification 1
Auxiliary Armaments Modification 1
Magazine Modification 1
Spotting Aircraft Modification 1
Damage Control Party Modification 1
 Slot 2 
Damage Control System Modification 1
Defensive AA Fire Modification 1
Hydroacoustic Search Modification 1
Surveillance Radar Modification 1
Engine Room Protection
 Slot 3 
Main Battery Modification 2
Secondary Battery Modification 1
AA Guns Modification 1
Aiming Systems 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
Steering Gears Modification 2
Ship Consumables Modification 1
 Slot 6 
Main Battery Modification 3
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.
For a graphic summary of ships Tiers VIII thru XI see LittleWhiteMouse's "Actual AA DPS".


Puerto Rico is a Tier X American large cruiser. Compared to her Tier IX relative Alaska, Puerto Rico offers slightly improved protection, a fourth main gun turret, as well as superior Anti-Air protection.

Armor and survivability

Puerto Rico is a well-protected ship, similar to her US larger cruiser counterparts. Her HP pool is massive for a cruiser, nearly on par with some battleships. She sports a relatively thick 27mm bow and stern armor, enough to bounce up to 381mm caliber AP shells when angled properly. Her 38mm deck armor is also relatively thick, resisting most 203mm HE shells and bouncing all battleship AP caliber shells. Perhaps Puerto Rico 's most striking armor feature is her excellent citadel protection. With a completely submerged citadel and a thick 254mm belt armor, her citadel is nearly impossible to hit even when showing flat broadside to the enemy. This lets Puerto Rico get away with mistakes that would sink other cruisers. Thanks to her relatively generous torpedo protection, she takes notably less damage from torpedoes than other cruisers. Puerto Rico 's only weaknesses are her large size and 60-second fire duration, the result of her large cruiser status. Despite these flaws, Puerto Rico overall is a very sturdy ship and will prove very difficult to kill.

Main Armament

Puerto Rico is armed with the same twelve 305mm rifles used on her lower tier cousins Alaska and Congress. The 305mm guns can be thought of as scaled-up versions of the US 203mm heavy cruiser guns, sharing many general characteristics. These guns fire powerful AP shells, sporting improved penetration angles, good armor penetration, and dealing heavy damage. Her HE is also potent as it can penetrate up to 51mm of armor, commonly found on heavily armored battleships and cruisers. Combined with twelve guns, Puerto Rico offers one of the heaviest broadside salvoes of any cruiser in World of Warships, dealing heavy damage to any vulnerable target she finds. Aiming her guns is similar to the German cruiser Hindenburg as they share similar shell flight times at all ranges.

While Puerto Rico 's salvoes hit hard, they are offset by her relatively poor accuracy and slow reload. Unlike other cruisers, Puerto Rico guns uses the less accurate battleship dispersion formula. Though she has a higher than average sigma of 2.2, the significantly larger dispersion area results in fewer hits at long range compared to other cruisers. Her slow reload also hurts her damage output, sometimes unable to fire a second salvo before the target disengages. Her 18.8km gun range is generally sufficient for most maps, though this can be inadequate in certain situations or maps. Though Puerto Rico doesn't have the same overall damage output as other Tier X cruisers, she makes up for this by severely punishing anyone who shows broadside to her.

Like other US high-tier tech tree cruisers, Puerto Rico lacks any sort of torpedo armament. While she carries several 127mm/54 guns as her secondary armament, their inaccuracy means they contribute little to any fight. As a result, Puerto Rico is vulnerable at very close ranges as her main guns only get a few salvoes to kill the enemy before they ram or torpedo her.

Anti-Air Defense

As expected of US cruisers, Puerto Rico carries a respectable AA suite. Her AA suite is effective at all ranges, though with an emphasis on close and mid-range firepower. While this isn't enough to stop carrier attacks outright, it can shoot down a lot of enemy planes and discourage future follow-up strikes. Slotting Defensive AA FireWhile active, the damage per second of large caliber anti-aircraft guns is increased. will improve her AA effectiveness, though it is mutually exclusive with the Hydroacoustic SearchWhile active, detects all enemy ships and torpedoes within the specified radius, without regard of obstacles such as smoke and terrain. as they share the same consumable slot. Her torpedo belt helps significantly against torpedo attacks, though she remains vulnerable to dive bomber attacks due to her large size. AP bombs can easily land citadel hits due to her inadequate citadel roof protection. Overall while Puerto Rico carries significant anti-air firepower, it is not enough to survive against determined Tier X carrier attacks. Players should still utilize friendly AA support whenever possible.


Due to her large hull, Puerto Rico is a cumbersome ship by cruiser standards, handling more like a battleship. With a large turning radius and sluggish rudder shift time, Puerto Rico cannot quickly react to incoming threats such as torpedo salvoes. While her top speed is average, this does not save her from having poor overall maneuverability. Instead, Puerto Rico relies on her armor to block enemy shells rather than dodging them entirely.


Unlike many other US cruisers, Puerto Rico 's concealment is relatively poor. Even with all the concealment reduction skills and upgrades, Puerto Rico can only lower her surface and aerial detection down to 13.0km and 9.0km respectively. Some battleships will even out-spot her, making her difficult to position effectively. The large surface detection radius also hurts her radar effectiveness as it gives destroyers ample time to mitigate its effects. Enemy carriers can easily keep her spotted due to the large gap between her anti-air range and her air detection range. While not a complete deal-breaker, Puerto Rico 's poor concealment is a notable weakness that players must account for.

Battle Performance

Puerto Rico 's general playstyle is very similar to that of her Tier IX cousin Alaska, sharing similar hulls, gun characteristics, and consumable loadout. Alternatively, she can also be thought of as the large cruiser version of the Tier IX Buffalo. In either case Puerto Rico is a versatile large cruiser that can be effective in nearly every situation. Though her optimal range is between 8-14km, oftentimes it is difficult to get close without coming under heavy focus fire. Her turret arrangement also makes her less suited to playing near islands, losing half her firepower whenever she is bow in. As a result, Puerto Rico should start most matches in a kiting position. This allows the player to whittle down the opposition while gaining more information on enemy deployment. Going to the flank is also a good idea as it creates crossfires between you and your allied battleships. Make sure to switch between HE and AP depending on the enemy orientation. AP is amazing for crushing broadside ships whereas HE deals consistent damage and fires to all targets.

If the enemy is sufficiently weak, then usually it is a good time to push. Puerto Rico performs well on the offense due to her durability and Surveillance RadarWhile active, detects all enemy ships within the specified radius, disregarding obstacles such as smoke and terrain.. Use islands or other cover to mask your approach; ideally you want to start the fight around 10km to press your close-mid range firepower advantage. Her 10km long-lasting radar excels at denying capture zones and catching ships in smoke. Even if the radar doesn't find anything, the threat of being radared alone can zone out enemy ships, decreasing their ability to damage you and your team. Once you have secured the objectives, you can either continue pushing to flank the other side of the map or switch to a kiting position if expecting a counter push.

Overall Puerto Rico is a solid versatile large cruiser, having good AP to punish other cruisers and radar to punish DDs. There is rarely a situation where she is truly helpless, making her a dangerous opponent throughout the match.


  • Massive HP pool for a Tier X Cruiser, comparable to Tier IX battleships
  • Resilient armor scheme, very difficult to citadel
  • Excellent torpedo protection, comparable to battleships in effectiveness
  • Twelve 305mm rifles gives her a heavy broadside salvo
  • Powerful AP shells with high base damage and improved penetration angles
  • Access to 10km Surveillance RadarWhile active, detects all enemy ships within the specified radius, disregarding obstacles such as smoke and terrain., a powerful tool against destroyers and smoke cruisers


  • Large hull, relatively easy to hit
  • Mediocre accuracy and slow reloading, relying more on her high alpha strike to kill ships
  • Lack of torpedo or effective secondary armament, hurting her effectiveness at very close range
  • Large turning radius and very slow rudder shift time
  • Poor concealment values, relatively easy to detect by other ships


As a special ship, Puerto Rico doesn't have any modules to research.

Optimal Configuration


The recommended upgrades for Puerto Rico in Randoms are as follows:

Slot 1: Main Armaments Modification 1 -20% to the risk of main battery becoming incapacitated. / +50% to main battery survivability. / -20% to main battery repair time. / -20% to the risk of torpedo tubes becoming incapacitated. / +50% to torpedo tubes survivability. / -20% to torpedo tubes repair time. is highly recommended as it reduces the chance of her turrets getting incapacitated. Auxiliary Armaments Modification 1 : +100% survivability to each. is also a viable option as it helps the AA mounts survive into the late game.

Slot 2: There are several interesting build options in this slot. Of those, Surveillance Radar Modification 1 :  +20% action time. and Hydroacoustic Search Modification 1 Increases the action time of the Hydroacoustic Search and Short-Range Hydroacoustic Search consumables.: +20% action time. are great choices as they increase the duration of their respective consumables. If the player does not have these upgrades, then Damage Control System Modification 1: -5% to the risk of fire. / -3% to the risk of flooding when torpedoes hit the torpedo protection. is a viable alternative.

Slot 3: Aiming Systems Modification 1 : -7% main battery dispersion. / +20% torpedo tubes traverse speed. / +5% secondary battery firing range. / -5% secondary battery dispersion.

Slot 4: This slot can address either her maneuverability or vulnerability to fires. Steering Gears Modification 1 : -20% rudder shift time. is an excellent choice as Puerto Rico has the slowest rudder shift of all Tier X cruisers. Damage Control System Modification 2 : -15% flooding recovery time. / -15% fire duration. is a good alternative if the player finds himself frequently on fire

Slot 5: Concealment System Modification 1: -10% to detectability radius. / +5% to the dispersion of enemy shells fired at your ship. is the preferred option as reducing her concealment provides far greater improvements than any other option available.

Slot 6: For most players, Main Battery Modification 3 : -12% main battery loading time. / -13% main battery traverse speed. is recommended as it significantly speeds up her reload time. If the player finds the base gun range too short, Gun Fire Control System Modification 2 : +16% firing range. is a viable alternative though keep in mind her slow shells still make it difficult to land shells on target.

Commander Skills


Puerto Rico can equip the following consumables:


As a premium ship, Puerto Rico 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


  1. Alaska-class cruiser - Wikipedia

Ship Change Log

See here for links to Update notes.

  • Available for testing by supertesters in the game starting from Update 0.8.8.

Testing Changes

  • Aug 16, 2019:
    • Preliminary characteristics.
  • Oct 14, 2019:
    • Sigma parameter was changed from 1.9 to 2.2.
  • Nov 1, 2019:
    • Detectability range by sea decreased from 17.6 to 16.56 km.
    • Detectability range by air decreased from 11.86 to 11.16 km.
    • Detectability after firing main guns in smoke decreased from 14.27 to 13.15 km.
  • Available via completing the Dockyard in Update 0.8.11.
  • Update 0.9.1:
    • Fixed display of secondary battery in the characteristics of the ship.
  • Update 0.10.0:
    • The firing range of the secondary battery was increased to 7.3 km.
  • Update 0.11.3:
    • Minor fixes to geometry and textures of the ship.
  • Update 0.11.5:
    • Minor fixes to geometry and textures of the ship.
  • Available via completing the dockyard starting in Update 0.11.7.
  • Update 12.1:
    • Improved the geometry and textures of the ship.

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