GamingDiver / WoWs Legends Ships / Riga

World of Warships: Legends ship guide

Riga

Also called: 里加 · Рига Beta

U.S.S.R. · Tier VII · CB Cruiser · Tech Tree: Piercing Heavy Cruisers

Radar support cruiserA radar platform first: reveal DDs and caps, then farm what you exposed.

Playstyle

Hold 14-17 km from a contested cap with an island close enough to break sightline when focus shifts
Avoid: Using radar like a destroyer hunter rather than a position tool

Key characteristics

Heavy AP pen16 km gun rangeRadar (11.7 km)Defensive AAFast AP shellsEasily spotted

On this page

Community stats
Playstyle
How to get Riga
Builds
Cohort position
Stats and specs
Armor
Charts
Balance history
Exteriors

Community Data

Riga Community Stats

Log in to GamingDiver and upload your data to see Community Data for Riga: community win rate, damage, survival, spotting, and your own comparison.

Playstyle

Overview

Riga is a Tier VII Soviet heavy cruiser whose signature kit is Surveillance Radar (11.7 km). The radar drop is what makes her valuable in cap fights; the guns are the secondary story. Standout traits: top-decile close-range AP pen in T7 CAs (596 mm) and top-decile AP overmatch threshold in T7 CAs (15.3 mm).

Positioning

Hold 14-17 km from a contested cap with an island close enough to break sightline when focus shifts. Push the radar forward only once the destroyer fight is yours; burning the drop to fish for a lone DD kill leaves the next push with no answer to smoke or vision. Both phases of a turn are slow (11.6 s on the rudder, a 920 m circle), so course changes are a plan rather than a reaction: set the angle before you are shot at.

Potato Avoidance

Using radar like a destroyer hunter rather than a position tool

The consumable's value is locking down a cap your team can take, not stealing a single salvo on a lone DD. Burn it early to fish for a kill and the next push has no answer to smoke or vision. Yours reaches 11.7 km for 20 s, which is the whole window your team gets to act on what it shows.

Signature Traits

Surveillance Radar

11.7 km range, 20 s duration. Detects all enemy ships within a fixed radius regardless of line-of-sight. Breaks smoke camps and wins the opening of a cap fight.

ELITE MAIN BATTERY ↗

Close-range AP brick · 596 mm
Big-caliber AP overmatch · 15.3 mm
Long-range AP brick · 295.55 mm
Fast AP shells · 4.53 s
Fast HE shells · 4.53 s
Flat AP shells · 965 m

Easily spotted ↗

14.2 km surface detect, bottom decile of T7 CAs. Visible before you can react; position early.

Acquisition

How to get Riga

Riga is available in the Piercing Heavy Cruisers branch of the U.S.S.R. Tech Tree for 18,000,000 credits after researching it in the branch. Known module upgrades cost up to 4,500,000 credits.

Show U.S.S.R. tech-tree branch diagram

U.S.S.R. Tech Tree

Riga sits in the Piercing Heavy Cruisers branch. The highlighted path shows the local branch context inside the full U.S.S.R. tree.

5 ships in highlighted branch · scroll to inspect all U.S.S.R. lines.

U.S.S.R.IIIIIIIVVVIVIIVIII★

Destroyer

Destroyer Split

Cruiser

Cruiser Split

Battleship

Carrier

Tier VIIINeustrashimyPRSD709 Tier VIIIDelnyPRSD410 Tier VIITashkentPRSD409 Tier VIIIPetropavlovskPRSC310 Tier IVSoobrazitelnyPRSD304 Tier VGorkyPRSC216 Tier IVKotovskyPRSC215 Tier VIIRigaPRSC209 Tier VITallinnPRSC208 Tier VIMinskPRSD207 Tier VGnevnyPRSD206 Tier IVPodvoiskyPRSD205 Tier ★KhabarovskPRSD110 Tier VIKievPRSD109 Tier VIIIDm. DonskoiPRSC109 Tier VIIISov. SoyuzPRSB109 Tier VIIChapayevPRSC108 Tier VIIVladivostokPRSB108 Tier VIIPobedaPRSA108 Tier VIIUdaloiPRSD107 Tier VIShchorsPRSC107 Tier VISinopPRSB107 Tier VBoevoiPRSD106 Tier VBudyonnyPRSC106 Tier VIzmailPRSB106 Tier VSerovPRSA106 Tier IVKirovPRSC105 Tier IVPyotr VelikiyPRSB105 Tier IIIIzyaslavPRSD104 Tier IIISvietlanaPRSC104 Tier IIIGangutPRSB104 Tier IIIKomsomoletsPRSA104 Tier IIDerzkiPRSD103 Tier IIBogatyrPRSC103 Tier INovikPRSC102

Builds

Pair with a commander whose unique skill complements her main armament; check the build tool for current recommendations.

Open in Build Tool →

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Cohort position

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Where Riga sits among Tier VII CAs (56 ships). Notable standouts are shown first; the rest of the cohort-ranked stats are in the expand below. Acquisition variants (Black Friday, Founders Edition) are counted once with their base ship, not as separate peers.

BestAP velocity965 m/s (1/57) BestHE velocity965 m/s (1/49) Top 10%Main battery caliber220 mm (6/57) Top 10%Main battery range16.05 km (2/57) Top 10%Secondary fire chance8% (5/50) Top 10%Secondary HE pen22 mm (5/50) Top 10%AP pen at 10 km389 mm (5/57) Top 25%Secondary HE alpha1,900 (7/50) Top 25%Engine power165,000 hp (7/56) Top 25%AA range5.2 km (7/57) Top 25%Max armor180 mm (7/57) Bottom 25%Smoke fire bloom8.83 km (52/57) Bottom 25%Rudder shift11.6 s (52/57) Bottom 25%Main battery reload13.1 s (47/57) Bottom 25%Sigma1.85 (51/57) Bottom 25%Fires per minute5.77 (44/49) Bottom 25%HE DPM125,725 (43/49) Bottom 25%AP DPM237,023 (44/57) Bottom 25%Main dispersion143.8 m (52/57) Bottom 25%AP arming threshold37 mm (52/57) Bottom 25%Displacement21,882 t (52/57) Bottom 25%Effective HE DPM (incl. fire)168,526 (44/49) Bottom 25%Flak per wave (expected)990 (48/57) Bottom 25%Deck armor35 mm (43/52) Bottom 10%Stealth profile14.19 km / 8.51 km (53/57 / 53/57) WorstTurning circle920 m (1 of 2 tied) WorstNo torpedoes (15 of 57 in cohort)

See 21 mid-pack stats

Not standouts for Riga -- here's where she sits on every other ranked stat in the cohort. Stats tagged NORM are tied across more than half the cohort, so the value is the cohort default rather than a standout.

Hit points42,000 HP(18/57) Max speed33.5 kt(19/57) Traverse-to-turn ratio5.4 ×(37/57) HE fire chance14%(20/49) Secondary DPM (per side)136,000(15/50) Acceleration26.5 s(35/56) AP fuse timer0.02 s(41/57) AP ricochet start50°(17/57) AP auto-bounce angle65°(17/57) Turn-speed retention179.3 hp/m(19/56) Power-to-weight7.54 hp/t(21/56) AA DPS375(29/57) AA threat1,455(23/57) Repair heal rate0.6 %/s(23/56) Citadel belt140 mm(24/54) Bow armor25 mm(33/54) Stern armor25 mm(33/54) NormSecondary dispersion bracket57(47 of 50 tied at this value) NormTurn speed retained81%(53 of 57 tied at this value) NormSecondary range5 km(46 of 50 tied at this value) NormRepair charges2(50 of 56 tied at this value)

Peers in this cohort

Compare Tier VII Cruisers

Show all 56 peers

Stats & specs

Customize in the Build Tool →

Survivability

Hit PointsInitial: 38,000 → 42,000

Displacement21,882 t

Hull dimensions

Length x beam at the waterline, with the hull's draft where the client carries one. Ships whose client entry holds only the 260 x 20 m placeholder use a curated real-world figure instead, and any ship we have no trustworthy size for omits this row rather than print the placeholder. Length matters when dodging torpedoes; beam and draft shape how hard the ship is to hit.

219.3 x 23.8 m (measured from the ship model)

Armor range16–180 mm

Plate armor thicknesses16, 20, 25, 27, 30, 35, 40, 50, 55, 70, 75, 80, 90, 100, 130, 140, 150, 180 mm

Armor material/layer entries61

Fire resistance

Does not reduce the damage a burning fire does per second: replay-measured burn ticks run at the full rate on every ship. By elimination it lowers how often hits set you on fire; ignition-rate replay data is consistent with that but too confounded by attacker mix to measure the reduction directly.

Initial: 33.3% → 36.6%

Fire duration30 s

Fire damage

Each fire ticks 0.3% of max HP per second for the full 30 s, so one unattended fire burns 9% of the pool (3,780 HP on this ship). 4 fire points can burn at once. Verified against measured burn ticks in replay data.

0.3% of HP per second

Flood duration40 s

Flood damage

A flood ticks 0.25% of max HP per second for the 40 s duration, so one unattended flood costs 10% of the pool (4,200 HP on this ship). Verified against measured flood ticks in replay data.

0.25% of HP per second

Torp Reduction

Reduces torpedo hit damage. Replay data shows no effect on floods: flood ticks run at the full rate and flood frequency does not decline with protection.

19%

Magazine HP

Per-turret powder-magazine HP, a separate pool from the ship's. Penetrating hits wear it down and the turret is likelier to be knocked out as it falls, so a larger pool keeps the guns firing through punishment that silences a peer's.

21,000

Steering gear HP

Durability of the steering gears. As this pool drops, hits are likelier to jam the rudder; unlike most modules the steering can be knocked out and repaired but is never permanently destroyed.

12,600

Effective HP

Base 42,000 HP plus everything Repair Party can restore: 0.6%/s x 28 s = 7,056 HP per charge, x2 charges = 14,112 HP. Ceiling, not a prediction: a charge only restores damage actually taken, and only the regeneratable share of it. Across 1,826 players in our replay corpus the median ship realized about half of this, mostly because half the charges go unspent — when Repair Party IS pressed it returns ~97% of the per-charge figure above.

56,112

Repairable: penetration50%

Repairable: citadel10%

Repairable: steering gear50%

Main Battery

ModuleArtillery: 220 mm/60 SM-7

Mounts / barrels3 mounts / 9 barrels

Reload timeInitial: 15.5 s → 14.5 s

Firing range (base)14.6 km

Firing range (top fire control)16.1 km

Turret traverseInitial: 5 °/s → 5.8 °/s

Turret armor260 mm

Turret traverse arcs

How far each mount can train, in degrees to either side of the mount's own facing, read from in-game data. A rear turret with ±150° leaves a 60° blind wedge over the bow; one-sided arcs are wing mounts that cover a single side. The data does not say which way each mount faces, so the arcs are listed per mount without bow/stern angles.

2x ±147°, ±145°

Guns to bear

How far off the bow (or stern) the ship must angle before every main turret can fire: the widest blind wedge among the rear-facing (or forward-facing) mounts, from each mount's trainable arc. Mount facing is inferred from turret stations and verified against known layouts, including Izumo's aft-facing forward turret.

35° off bow / 33° off stern

See the firing-arcs diagram ↓

AP pen max range296 mm

HE fire DPM vs T7 BB38675

Effective HE DPM vs T7 BB152261

Shell Grouping (σ)1.85

Max Horiz Disp

Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model:

σ_{H} = (\frac{R}{30} \cdot \frac{idealRadius - minRadius}{idealDistance} + minRadius) \cdot 30

= (\frac{16054.5}{30} \cdot \frac{8 - 1.1}{1000} + 1.1) \cdot 30 = 143.8 m

143.8 m at 16.1 km

Max Vert Disp

Vertical dispersion ellipse height at max range:

σ_{V} = σ_{H} \cdot radiusOnMax

= 143.8 \cdot 0.6 = 86.3 m

86.3 m at 16.1 km

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}

= 143.8 \cdot \frac{0.6}{1.85} = 46.6 m

46.6 m at 16.1 km

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}

= 86.3 \cdot \frac{0.6}{1.85} = 28 m

28 m at 16.1 km

Turret turn time

180 degrees / 5 deg/s traverse speed = 36 s.

36 s

Shells/min

Zero upgrades: 9 broadside guns x 60 / 15.5 s base reload = 34.8. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 9 broadside guns x 60 / 13.1 s all-upgrades reload = 41.2.

Initial: 34.8 → 41.2

HE shells

HE Damage3,050

HE Velocity965 m/s

Fire Chance14%

HE penetration

37 mm ≈ 220 mm caliber / 6 (standard HE penetration ratio).

37 mm

HE full-salvo alpha

3,050 HE damage x 9 broadside guns = 27,450.

27,450

HE DPM

Zero upgrades: 27,450 HE full-salvo alpha x 60 / 15.5 s base reload = 106,258. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 27,450 HE full-salvo alpha x 60 / 13.1 s all-upgrades reload = 125,725.

Initial: 106,258 → 125,725

Fires/min

Zero upgrades: 34.8 shells/min x 14% fire chance = 4.88. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 41.2 shells/min x 14% fire chance = 5.77.

Initial: 4.88 → 5.77

AP shells

AP Damage5,750

AP Velocity965 m/s

Min Ricochet50 deg

Guaranteed Ricochet65 deg

Fuse Timer0.022 s

Fuse Threshold37 mm

AP overmatch

floor(220 mm caliber / 14.3) = 15 mm (AP auto-penetrates plating this thick or less).

15 mm

AP Pen Close

Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity:

P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v_{0}^{1.38}

= 10^{- 7} \cdot 2800 \cdot 170^{0.69} \cdot {0.22}^{- 1.07} \cdot 965^{1.38} = 643.3 mm

. Matches the in-game spec card.

643.3 mm point-blank

AP Pen Far

Same formula at the ship's max firing range (16.1 km), where the shell has slowed to 549.2 m/s:

P = 10^{- 7} \cdot 2800 \cdot 170^{0.69} \cdot {0.22}^{- 1.07} \cdot {549.2}^{1.38} = 295.5 mm

295.5 mm at 16.1 km

AP full-salvo alpha

5,750 AP damage x 9 broadside guns = 51,750.

51,750

AP DPM

Zero upgrades: 51,750 AP full-salvo alpha x 60 / 15.5 s base reload = 200,323. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 51,750 AP full-salvo alpha x 60 / 13.1 s all-upgrades reload = 237,023.

Initial: 200,323 → 237,023

AP AOE Radius

AP shell over-penetration splash radius; scales with shell mass. Wickes 102mm = 3, standard 152mm CL ~ 20, Iowa 406mm ~ 270, Yamato 460mm = 400, Incomparable 650mm = 550 (max). Larger value = bigger splash damage area when AP over-pens.

AA Defense

AA mount pointsInitial: 14 → 18

Maximum AA range

Longest-reaching family on the in-game AA card. Base AirDefense aura max range is 3.5 km; dual-purpose mount auras extend it.

5.2 km

37 mm V-11 (upgraded hull only)12×2 37mm

37 mm 46-K6×4 37mm

37 mm 70-K (stock hull only)8×1 37mm

100 mm/56 B-54 (DP)

Dual-purpose: your secondaries doing double duty against aircraft. The same mounts appear on the Secondary Battery card - shared guns, not extra hardware.

2×2 100mm

130 mm/55 B-2-U (DP)

Dual-purpose: your secondaries doing double duty against aircraft. The same mounts appear on the Secondary Battery card - shared guns, not extra hardware.

4×2 130mm

Guns100 mm/56 B-54 (DP) + 130 mm/55 B-2-U (DP)

Continuous DPS

Effective DPS in in-game units (raw aura damage × 3.5 × hit probability, summed per contributing aura) - matches the Close-range AA DPS headline's currency. Includes 101 from dual-purpose secondaries firing as AA in this range band.

101

Range5.2 km

Guns37 mm V-11

Continuous DPS

Effective DPS: 56 raw aura damage × 3.5 × 0.9 hit probability = 176 - the same in-game units as the Close-range AA DPS headline.

Initial: 123 → 176

Range3.5 km

Total DPS in Aura

Far 101 + Outer Medium 176 = 277

277

Guns37 mm 46-K

Continuous DPS

Effective DPS: 31 raw aura damage × 3.5 × 0.9 hit probability = 98 - the same in-game units as the Close-range AA DPS headline.

Initial: 76 → 98

Range3.2 km

Total DPS in Aura

Far 101 + Outer Medium 176 + Inner Medium 98 = 375

375

Bursts

Each ~2 s wave fires 2 quick salvos of 4 clouds ahead of the attacking squadron, plus 1 stray cloud farther out that appear off-beat between waves - up to 9 clouds per wave × 230 damage each. Planes that fly into a cloud take its damage; clouds dissipate before the next wave lands. Defensive AA Fire, where fitted, multiplies the salvo repeats within each wave.

2 salvos × 4 clouds + 1 outer

Cloud damage

Damage a plane takes for flying into one flak cloud, before any reductions.

230

Cloud spawn chance

Each cloud in the pattern rolls this chance to spawn, so waves average fewer clouds than the maximum. Often called flak 'hit chance', but spawned clouds always damage planes that fly into them - the roll is on spawning.

90%

Wave rate

A flak wave spawns roughly every 2 s - timed frame-by-frame from gameplay footage and consistent across ships.

every ~2 s

Fired by

Flak keeps firing while at least one secondary battery mount is operational - even losing every other AA mount does not stop it.

Secondary battery

Flak zone

The activation band: flak fires while attacking planes are inside it. Clouds are placed ahead of the planes' path, so bursts can land short of 2.5 km or past 5.2 km - once planes get inside the band, new waves stop. AA range bonuses push the outer edge out; the 2.5 km inner edge does not move.

2.5-5.2 km

See the AA layers diagram ↓

Secondary Battery

Mounts6

Firing range5.0 km

Shell Grouping (σ)1

Secondary dispersion type

Max dispersion = range (km) × 57 + 30. Each dispersion type sets its own slope; this is not a percentage applied to a standard baseline.

Standard

Max secondary dispersion @ 5 km

5 km × 57 + 30 = 315 m.

315 m

Caliber100 mm

Reload time3.75 s

HE Damage1,400

Muzzle Velocity895 m/s

Fire Chance6%

Armor Pen17 mm

Show 1 more gun family

Caliber130 mm

Reload time5 s

HE Damage1,900

Muzzle Velocity900 m/s

Fire Chance8%

Armor Pen22 mm

Maneuverability

Engine power165,000 hp

Maximum speed33.5 kt

Turning circle radius920 m

Rudder shift time11.6 s

Engine power-boost threshold7 kt

Engine spool-up time15.3 s

Reverse spool-up time7.7 s

Reverse speed

top speed / 4 + 4.9 = 33.5 / 4 + 4.9 = 13.3 kt. The community reverse-speed model from the WoWs ShipBuilder project, the same source as the acceleration model on this card. Base value; speed modifiers scale it. Not shown on the in-game card.

13.3 kt

Crash stop

Seconds from top speed to a dead stop after ordering full reverse: reverse power winds in over the reverse spool-up while water drag does most of the braking. Same community-model simulation as the acceleration times, using the ship's own reverse-power ratio from in-game data. The full curve is on the acceleration chart.

27.3 s

Engine boost threshold (reverse)

Speed below which the engine's built-in power boost applies in reverse. Matches the in-game maneuverability card's reverse threshold (Vampire II reads 10.5 here and the card shows 11; the card rounds half up).

9.4 kt

Acceleration 0-90%

Time to reach 90% of top speed (30.2 kt of 33.5 kt), from our in-house acceleration model.

26.5 s

Acceleration 0-99%

Time to reach 99% of top speed (33.2 kt of 33.5 kt). 99% rather than 100% because true top speed is asymptotic (thrust meets drag), so the last fraction of a knot is never quite gained.

43.3 s

Traverse-to-turn ratio

How many degrees the turret can swing for each degree the hull turns. Turn rate

ω_{hull} = \frac{180}{π} \cdot \frac{V_{max} (m/s)}{R_{turn}} = \frac{180}{π} \cdot \frac{33.5 \cdot 0.5144}{920} = 1.07 ° / s

, so

ratio = \frac{ω_{turret}}{ω_{hull}} = \frac{5}{1.07} = 4.7 \times

. Below 5 the turrets drag in a turning fight; 25+ keeps up with any rudder.

4.7× drags

See the full acceleration curve ↓

Concealment

Detectability by sea14.19 km

Detectability by air8.51 km

Smoke firing penalty8.83 km

Detect when firing (sea)

Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach. Matches the in-game 'Detect Firing Sea' value on all 8 unmodified captures, and range-modified captures track the modified range.

16.05 km

Detect when firing (air)

Air detectability plus the gun-firing bloom (4.4 km, which tracks main-battery caliber x 0.020). Matches the in-game 'Detect Firing Air' value on every captured ship.

12.91 km

Detect when on fire (sea)

Base sea detectability + 2.0 km while burning; matches the in-game 'Detect Fire Sea' value on every captured ship.

16.19 km

Detect when on fire (air)

Base air detectability + 3.0 km while burning; matches the in-game 'Detect Fire Air' value on every captured ship.

11.51 km

Guaranteed Detect2 km

✦

Consumables

Damage Control Party∞ charges · 60 s reload · 5 s active

Choose one

Sonar2 charges · 180 s reload · 96 s active · 4.44 km ship detect
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{148 \times 30}{1000} = 4.44 km$
· 3.12 km torpedo detect
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{104 \times 30}{1000} = 3.12 km$

Defensive AA Fire3 charges · 140 s reload · 25 s active · ×2 flak burst boost
ƒ
Repeats the flak burst pattern ×2 within each wave - more clouds in the air over the wave, at the same spots.

Choose one

Surveillance Radar2 charges · 180 s reload · 20 s active · 11.7 km radar range
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{390 \times 30}{1000} = 11.7 km$

Catapult Fighter3 charges · 80 s reload · 90 s active · 5 km patrol radius
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{167 \times 30}{1000} = 5 km$
· 1 squadron size

Repair Party2 charges · 60 s reload · 28 s active · 7,056 HP (16.8% of max HP) total heal (per charge)
ƒ
Heal per second (0.6%) x effective active time (28 s) = up to 16.8% of max HP restored per charge.
· 14,112 HP (33.6% of max HP) total heal (all charges)
ƒ
16.8% per charge x 2 charges = up to 33.6% of max HP if the whole Repair Party loadout is used.
· 252 HP/s (0.6% of max HP) heal per second
ƒ
0.6% of max HP (42,000 HP) per second = 252 HP/s. WoWS heals a flat percent of MAX HP each second, so this rate holds at any health level.

Module options (3)

Stats above use the fully-upgraded modules. These are the research-tree alternatives; trade-offs are flagged.

HullUpgrade

Hit points38,000 → 42,000
Rudder shift21.1 → 15.1 s
AA mounts14 → 18
Close-range AA DPS63 → 87
Turret traverse5 → 5.8 °/s

Fire controlUpgrade

Main battery range14,595 → 16054.5 m

ArtilleryUpgrade

Base reload15.5 → 14.5 s

See all derived stats

Show ▾

All values are ship base stats with modifications and upgrade changes denoted inline.

Numbers the spec table cannot show directly: alpha-strike math, DPM, dispersion, AP penetration. Click the formula chip on any row to reveal how it is calculated.

Main battery formulas

Shell Grouping (σ)1.85

Max Horiz Disp143.8 m at 16.1 km

Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model:  $σ_{H} = (\frac{R}{30} \cdot \frac{idealRadius - minRadius}{idealDistance} + minRadius) \cdot 30$   $= (\frac{16054.5}{30} \cdot \frac{8 - 1.1}{1000} + 1.1) \cdot 30 = 143.8 m$

Shell scatter width @ 5 km67.5 m

Horizontal scatter at a fixed 5 km, from the same verified dispersion model as the rows below - a knife-fight-range anchor comparable across ships.

Shell scatter width @ 10 km102 m

How wide your shells scatter at 10 km, from the same dispersion model as the max-range figure above. Picking a fixed range makes this number directly comparable from ship to ship: max-range dispersion makes a longer-range gun look worse even when it's tighter at any common range. The interactive Dispersion tab on the Charts card plots the full curve from 0 to max range.

Shell scatter width @ 15 km136.5 m

Horizontal scatter at a fixed 15 km, from the same verified dispersion model - the long-range anchor. Only shown when the ship's guns reach 15 km.

Max Vert Disp86.3 m at 16.1 km

Vertical dispersion ellipse height at max range: $σ_{V} = σ_{H} \cdot radiusOnMax$ $= 143.8 \cdot 0.6 = 86.3 m$

Shell scatter height @ 10 km53.5 m

How tall the same scatter ellipse is at 10 km. Comparable from ship to ship for the same reason as the width value above. The height/width ratio is a piecewise-linear curve through three points from the ship's own dispersion data:  $radiusOnZero = 0.2$  at 0 m,  $radiusOnDelim = 0.5$  at  $delim \cdot R_{m a x} = 0.5 \cdot 16054.5 = 8027$  m, and  $radiusOnMax = 0.6$  at 16054.5 m. Above the kink:  $k = 0.5 + (0.6 - 0.5) \cdot \frac{10000 - 8027}{16054.5 - 8027} = 0.5246$ , so  $σ_{V} = σ_{H} \cdot k = 102 \cdot 0.5246 = 53.5 m$ .

Med Horiz Disp46.6 m at 16.1 km

50%-hit horizontal radius: $σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}$ $= 143.8 \cdot \frac{0.6}{1.85} = 46.6 m$

Med Vert Disp28 m at 16.1 km

50%-hit vertical radius: $σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}$ $= 86.3 \cdot \frac{0.6}{1.85} = 28 m$

Dispersion familyCruiser Disp.

Standard cruiser dispersion baseline.

AP Pen Close643.3 mm point-blank

Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity:  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v_{0}^{1.38}$   $= 10^{- 7} \cdot 2800 \cdot 170^{0.69} \cdot {0.22}^{- 1.07} \cdot 965^{1.38} = 643.3 mm$ . Matches the in-game spec card.

AP Pen Far295.5 mm at 16.1 km

Same formula at the ship's max firing range (16.1 km), where the shell has slowed to 549.2 m/s:  $P = 10^{- 7} \cdot 2800 \cdot 170^{0.69} \cdot {0.22}^{- 1.07} \cdot {549.2}^{1.38} = 295.5 mm$ .

AP pen 5 km498 mm

AP penetration at a fixed 5 km, read off the same PC-validated ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the canonical community AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$ . Fixed anchors make ships directly comparable at the same fighting distance; the Charts card plots the full curve.

AP pen 10 km389 mm

AP penetration at a fixed 10 km, read off the same PC-validated ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the canonical community AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$ . Fixed anchors make ships directly comparable at the same fighting distance; the Charts card plots the full curve.

AP pen 15 km309 mm

AP penetration at a fixed 15 km, read off the same PC-validated ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the canonical community AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$ . Fixed anchors make ships directly comparable at the same fighting distance; the Charts card plots the full curve.

HE flight time @ 10 km4.53 s

How long an HE shell takes to reach a target at a fixed 10 km, from the same numerically integrated trajectory the Charts card plots. The shell slows under quadratic air drag,  $a_{drag} = k ρ v^{2}$ , where  $ρ$  is air density from a standard-atmosphere profile and  $k$  bundles the shell's drag coefficient, caliber and mass:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.27 \cdot {0.22}^{2}}{8 \cdot 170} = 3.02 \times 10^{- 5}$ . That runs from a 965 m/s muzzle velocity in 0.02 s steps under gravity 9.8 m/s² until the shell lands, then divides by 2.77: the game clock runs faster than real time, and that factor was measured against stopwatch runs in the Training Room. Lower is better, since a faster shell is harder to dodge and needs less lead.

AP flight time @ 10 km4.53 s

How long an AP shell takes to reach a target at a fixed 10 km, from the same numerically integrated trajectory the Charts card plots. The shell slows under quadratic air drag,  $a_{drag} = k ρ v^{2}$ , where  $ρ$  is air density from a standard-atmosphere profile and  $k$  bundles the shell's drag coefficient, caliber and mass:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.27 \cdot {0.22}^{2}}{8 \cdot 170} = 3.02 \times 10^{- 5}$ . That runs from a 965 m/s muzzle velocity in 0.02 s steps under gravity 9.8 m/s² until the shell lands, then divides by 2.77: the game clock runs faster than real time, and that factor was measured against stopwatch runs in the Training Room. Lower is better, since a faster shell is harder to dodge and needs less lead.

HE penetration37 mm

37 mm ≈ 220 mm caliber / 6 (standard HE penetration ratio).

AP overmatch15 mm

floor(220 mm caliber / 14.3) = 15 mm (AP auto-penetrates plating this thick or less).

AP AOE Radius40

AP shell over-penetration splash radius; scales with shell mass. Wickes 102mm = 3, standard 152mm CL ~ 20, Iowa 406mm ~ 270, Yamato 460mm = 400, Incomparable 650mm = 550 (max). Larger value = bigger splash damage area when AP over-pens.

Broadside guns used for alpha9

All 9 barrels bear on the broadside.

Turret turn time36 s

180 degrees / 5 deg/s traverse speed = 36 s.

HE full-salvo alpha27,450

3,050 HE damage x 9 broadside guns = 27,450.

AP full-salvo alpha51,750

5,750 AP damage x 9 broadside guns = 51,750.

HE DPMInitial: 106,258 → 125,725

Zero upgrades: 27,450 HE full-salvo alpha x 60 / 15.5 s base reload = 106,258. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 27,450 HE full-salvo alpha x 60 / 13.1 s all-upgrades reload = 125,725.

AP DPMInitial: 200,323 → 237,023

Zero upgrades: 51,750 AP full-salvo alpha x 60 / 15.5 s base reload = 200,323. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 51,750 AP full-salvo alpha x 60 / 13.1 s all-upgrades reload = 237,023.

Shells/minInitial: 34.8 → 41.2

Zero upgrades: 9 broadside guns x 60 / 15.5 s base reload = 34.8. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 9 broadside guns x 60 / 13.1 s all-upgrades reload = 41.2.

Fires/minInitial: 4.88 → 5.77

Zero upgrades: 34.8 shells/min x 14% fire chance = 4.88. All upgrades (top gun + Main Battery Mod. 3 = -10% reload): 41.2 shells/min x 14% fire chance = 5.77.

AA defense

AA DPS at max range101

Only families that reach 5.2 km contribute at the outer edge of the AA bubble. In-game families: 37mm 46k sirius 6x4 -> 98 DPS @ 3.2 km; 37mm 67 V21 12x2 -> 176 DPS @ 3.5 km; 130mm 60 BL 101 B 6x2 -> 101 DPS @ 5.2 km.

Maximum AA range5.2 km

Longest-reaching family on the in-game AA card. Base AirDefense aura max range is 3.5 km; dual-purpose mount auras extend it.

AA DPS layered by range101 DPS @ 5.2 km, 277 DPS @ 3.5 km, 375 DPS @ 3.2 km

Cumulative AA DPS at each family range threshold. Inner ranges stack the outer families, so a target closing the distance hits stronger AA bubbles as it crosses each band.

AA DPS at point-blank375

Sum of every family's average DPS, achievable only inside the closest-range family (3.2 km).

AA threat index1455

SUM over AA auras of (aura DPS x aura range km). A plane crossing the AA bubble is exposed to each aura for a time proportional to that aura's range, so long-reach DPS is worth more than the same DPS in a short bubble. Units: DPS*km; used to rank overall AA threat across the cohort.

Secondary battery dispersion

Secondary dispersion typeStandard

Max dispersion = range (km) × 57 + 30. Each dispersion type sets its own slope; this is not a percentage applied to a standard baseline.

Max secondary dispersion @ 5 km315 m

5 km × 57 + 30 = 315 m.

Secondary battery firepower

Secondary DPM (per side)136,000

Sum across all secondary families of (per-side barrels × 60 / reload_s × alpha), where per-side barrels = mounts × barrels-per-mount / 2 (the guns that bear on one broadside target). Per-family: 2×2 100 mm (2/side) × 60/3.75 × 1400 = 44,800 + 4×2 130 mm (4/side) × 60/5 × 1900 = 91,200. Assumes every shell hits (real hit rate is lower; the Brawl matchup tool on the Compare page folds in dispersion + target armor).

Max HE alpha1900

Maximum HE damage per shell across secondary HE families. Best on this ship: 1900 from the 130 mm family.

Max HE fire chance8%

Maximum per-shell fire chance across secondary HE families (before target fire resistance is applied). Best on this ship: 8% from the 130 mm family.

Max HE pen22 mm

Maximum HE armor penetration across secondary HE families (caliber × 1/6 for most nations; 1/4 for German/UK BBs). Shells whose pen falls under a plate's armor thickness shatter for 0 hull damage though fire chance still applies. Best on this ship: 22 mm from the 130 mm family.

Armor Beta

Hull HP 38,000 → 42,000 with hull upgrade, distributed across 5 hull zones, each with its own plate thicknesses, saturation cap, and pen thresholds. HP caps are the exact in-game values, not estimated.

Bow & stern25 mm

Overmatched by 102+ AP guns across the bracket. Can’t reliably bow-tank; gets bow-citadelled and overpenned.

Belt / citadel140 mm

AP can citadel a flat broadside even at range. Stay angled and avoid showing the full side.

Farming16 mm

Superstructure and extremities take HE pens and AP overpens from nearly any gun: steady chip damage. Fire resistance 37%, fires burn 30s. Range-by-range in the Compare tool →

Section	Plates	HP cap	Threats	Tactic
Bow	25 mm primary (range 25–40 mm)	1,500 (4% of HP)	Overmatched by 380mm+ AP (Gneisenau, Richelieu)Angle bounces 356mm25 mm: HE pens from 150mm+	Bow-tank fits behind this exterior plate. Saturation is FAST here; the cap is often only a few thousand HP.
Hull (midship)	30 mm primary (range 20–150 mm)	31,500 (75% of HP)	Overmatched by 460mm+ AP (Aki, Musashi)Angle bounces 410mm30 mm: HE pens from 203mm+	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	25 mm primary (range 25–150 mm)	2,100 (5% of HP)	Overmatched by 380mm+ AP (Gneisenau, Richelieu)Angle bounces 356mm25 mm: HE pens from 150mm+	Mirror of bow. Same fast saturation.
Citadel	140 mm primary (range 20–140 mm)	≈ 165,500 (effectively no cap)	Citadel pen: full damageOver-pen: ×0.10 damage	Effectively no cap; citadel pool sits at ~165k HP on every ship. An AP citadel penetration deals the shell's full damage, the biggest single hit available; only over-penetrations are damped, to ×0.10.
Superstructure	16 mm primary (range 16–35 mm)	2,500 (6% of HP)	Any HE ≥16 mm pens at full damage	Any HE ≥16 mm pens at full damage. HE-spam target, and the section saturates fast (often only a few thousand HP).
Turret (module, per magazine)	separate HP pool, does not drain ship HP	21,000 magazine HP	Turret knocked out	Per-turret powder-magazine HP, a separate pool that does not drain ship HP. As it is worn down the turret is likelier to be knocked out, and a smaller pool gets there faster.
Secondary mount (130 mm mount)	separate HP pool, does not drain ship HP	800 per-mount HP	Destroyed at 0 HP	Per-mount HP for the heaviest secondary on this ship. A mount destroyed at 0 HP is out for the rest of the battle; DCP does not repair destroyed mounts. Smaller (lighter-caliber) secondaries typically share the same HP value.
AA mount (37 mm mount)	separate HP pool, does not drain ship HP	200 per-mount HP	Destroyed at 0 HP	Per-mount HP for the heaviest AA on this ship. An AA mount destroyed at 0 HP stops shooting down planes for the rest of the battle; DCP does not repair destroyed mounts. HE shells specifically target AA mounts since the small-caliber HP pool falls fast.
Rudder (module)	separate HP pool, does not drain ship HP	12,600 module HP	Incapacitated at 0 HP	When module HP reaches 0 the rudder locks at its current angle until DCP repairs it. Repair via Damage Control Party.

Saturation cap = HP a section can absorb before further damage to it is reduced (the "bow-tank" effect). Citadel pool is ~165k on every ship (effectively no cap); damage is gated by pen/over-pen multipliers instead. Superstructure saturates fast but HE always pens regardless of the plate thickness. Rudder (and other module HPs) are a separate pool from ship HP: damaging a module doesn't drain ship HP. Incapacitated modules like the rudder and engine are restored by DCP, but secondary and AA mounts destroyed at 0 HP stay out for the rest of the battle.

Open in Charting Tool

Ship Charts

Balance History

Balance updates affecting Riga. Cards are condensed; use each source link for full context.

Nerf ×1Buff ×4Main Battery ×4

2026-07-30

Ministry of Balance: Anniversary Tune-Up

credit earnings reduced by 3.16%.

Read the full official post

2023-11-02

MINISTRY OF BALANCE REPORTS: A FLURRY OF CHANGES

Riga has always been an oddball, and now she seems like a low point in the line compared to Tallinn and Petropavlovsk. We're improving the ship's accuracy to make her dispersion more consistent and reliable.
Main battery shell grouping increased by 2.5% (from 1.8 to 1.85).
Main battery dispersion improved by 9% (Riga's dispersion becomes the same as normal cruisers).
Stock main battery reload time reduced from 16.5 to 15.5 s.
Upgraded main battery reload time reduced from 15.5 to 14.5 s.

Read the full official post

Exteriors

Skins & permanent camouflages

Every custom exterior Riga can equip, from in-game data.

DefaultThe ship’s standard exterior

Primary official WG sources

Filtered to official World of Warships: Legends pages where this ship is a focus, reward, line member, or high-context variant mention.

2021-09-30 · Patch notes Halloween Update: Double the Fun, Double the Trouble Patch notes 2021-11-04 · Patch notes November update: Fury on the wings of wisdom Patch notes 2026-07-30 · Patch notes Anniversary Update: Tides of Adventure Patch notes

Riga

Riga Community Stats

Riga Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get Riga

Builds

Cohort position

Peers in this cohort

Stats & specs

See all derived stats

Main battery formulas

AA defense

Secondary battery dispersion

Secondary battery firepower

Armor Beta

Ship Charts

Balance History

Ministry of Balance: Anniversary Tune-Up

MINISTRY OF BALANCE REPORTS: A FLURRY OF CHANGES

Skins & permanent camouflages

Primary official WG sources

Signature Traits