GamingDiver / WoWs Legends Ships / Omaha

World of Warships: Legends ship guide

Omaha

Also called: 奥马哈 Beta

U.S.A. · Tier IV · CL Cruiser · Tech Tree: Early U.S. Cruisers

HE fire-spam cruiserStack fires and HE DPM; Sonar buys safe vision around cover and torpedoes.

Playstyle

Sit 10-13 km from a contested cap where an island shadows you from the opposite battleship line
Avoid: Pushing in blind because the kit says brawler

Key characteristics

High HE / fire outputHigh AP DPMSonarFast turret traverseHeavy beltShort AA reach

On this page

Community stats
Playstyle
How to get Omaha
Builds
Cohort position
Stats and specs
Armor
Charts
Exteriors

Community Data

Omaha Community Stats

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

Playstyle

Overview

Omaha is a Tier IV American light cruiser whose 152mm guns farm HE fires and sustained DPM, with Sonar as her vision tool: Hydro lets her contest islands and smoke without exposing the hull. Her sonar reaches 3.7 km, which is the range at which she can commit to a contest without guessing. Both shells run cohort-strong (top-decile AP at 212,571 AP DPM and cohort-best HE at 150,857 HE DPM), making her a dual-threat gunship: keep AP up against broadsides and citadels, and switch to HE against bow-in ships, superstructures, and the thin or angled targets AP over-penetrates or bounces off. Standout traits: best fires per minute in T4 CAs (8.2) and top-decile turret traverse rate in T4 CAs (10). Her value is back-loaded. At 23,100 HP she sits in the lower third of her cohort, so the first half of a match is about staying alive and unspotted, and the payoff arrives once the enemy battleships have been traded away and her fires and torpedoes can work uncontested.

Positioning

Sit 10-13 km from a contested cap where an island shadows you from the opposite battleship line. Hydro (3.7 km on ships, 2.7 km on torpedoes) lights up DDs and incoming torpedoes inside its bubble, so you can push the cap edge from cover without taking the spotting cycle; prefer cover positions over open-water flanks. Your guns lose penetration at range, so aim AP at broadsides you can still citadel and put HE into superstructures and upper-hull sections, rather than the bow-in or belt armor your shells bounce and shatter on. She is genuinely evasive in both phases of a turn, answering the helm in 5.8 s and carving a 600 m circle, so you can break a salvo and still be where you meant to go.

Potato Avoidance

Pushing in blind because the kit says brawler

3.7-km Sonar is what makes the close fight winnable, and it only helps once you are already committed; it does not tell you what is waiting two islands over. Push when a destroyer is lit or a teammate holds vision, not to find out who is there. The other half is opening fire while the nearest battleship still has a loaded salvo. At 11.14 km detection her guns give her away well inside battleship range, so the fire is worth setting only after that battleship has committed its guns elsewhere. Set it, then break line of sight instead of trading. Torpedoes go into the water when you have the time and space to launch them without being seen doing it, not as an excuse to close.

Signature Traits

ELITE MAIN BATTERY ↗

HE DPM machine · 150857 HE
High fire pressure · 8.23 fires
Fast turret traverse · 10°
AP DPM machine · 212571 AP
Fire-starter cruiser

Heavy belt ↗

Citadel belt in the top bracket. Incoming AP rarely citadels through angle.

Short AA reach ↗

3.1 km AA reach, bottom decile of T4 CAs. Bombs and torpedoes drop before AA bites.

Thin stern plate ↗

10 mm stern, bottom quartile of T4 CAs.

Acquisition

How to get Omaha

Omaha is available in the Early U.S. Cruisers branch of the U.S. Tech Tree for 500,000 credits after researching it in the branch. Known module upgrades cost up to 100,000 credits.

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

U.S. Tech Tree

Omaha sits in the Early U.S. Cruisers branch. The highlighted path shows the local branch context inside the full U.S. tree.

The early U.S. cruisers focus on providing a powerful broadside from their rapid-firing guns, and they are your starting point to the U.S. Tech Trees. From Tier III, you gain access to a useful self-defense tool: Sonar.

Advantages: High rate of fire, Sonar consumable starting at Tier III
Disadvantages: Limited main battery firing angles, Low-velocity shells

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

U.S.A.IIIIIIIVVVIVIIVIII

Destroyer

Cruiser

Light cruiser split

Battleship

Alternative battleship

Hybrid battleship

Carrier

Tier IIWickesPASD027 Tier IIIClemsonPASD019 Tier IVFarragutPASD005 Tier VMahanPASD006 Tier VIBensonPASD008 Tier VIIFletcherPASD021 Tier VIIIAllen M. SumnerPASD114 Tier IAlbanyPASC003 Tier IISt. LouisPASC004 Tier IIIPhoenixPASC024 Tier IVOmahaPASC005 Tier VPensacolaPASC012 Tier VINew OrleansPASC014 Tier VIIBaltimorePASC017 Tier VIIIBuffaloPASC109 Tier VDallasPASC206 Tier VIHelenaPASC207 Tier VIIClevelandPASC208 Tier VIIISeattlePASC209 Tier IIIWyomingPASB004 Tier IVNew YorkPASB006 Tier IVNevadaPASB105 Tier VNew MexicoPASB034 Tier VIColoradoPASB008 Tier VIIIowaPASB018 Tier VIIIMainePASB118 Tier VTennesseePASB106 Tier VINorth CarolinaPASB012 Tier VIIKansasPASB108 Tier VIIIMinnesotaPASB109 Tier VIConnecticutPASB207 Tier VIINebraskaPASB208 Tier VIIIDelawarePASB209 Tier IIILangleyPASA004 Tier VRangerPASA006 Tier VIILexingtonPASA012

Builds

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

Open in Build Tool →

Commanders frequently paired with this ship AL Baltimore AL Montpelier Captain Janeway

Have a build you swear by? Open it in the Build Tool and hit Save build to share it here.

Cohort position

Hide ▾

Where Omaha sits among Tier IV CAs (21 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.

BestFires per minute8.23 (1 of 2 tied) BestHE DPM150,857 (1 of 2 tied) BestEffective HE DPM (incl. fire)210,408 (1 of 2 tied) Top 10%Main battery reload7 s (3/22) Top 10%AP DPM212,571 (3/22) Top 25%Rudder shift5.8 s (5/22) Top 25%Turning circle600 m (6/22) Top 25%AP velocity914 m/s (5/22) Top 25%HE velocity914 m/s (5/19) Top 25%Turn-speed retention150 hp/m (6/22) Top 25%Torpedo reaction time7.3 s (4/21) Top 25%Torpedo reload66 s (6/21) Bottom 25%Torpedo range5.49 km (17/21) Bottom 25%Torpedo damage≈10,833 (18/21) Bottom 25%Torpedo speed56 kt (17/21) WorstNo secondaries (6 of 22 in cohort) WorstAA range3.1 km (22/22) WorstEnd plates10 mm (1 of 5 tied / 1 of 4 tied)

See 28 mid-pack stats

Not standouts for Omaha -- 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 points26,800 HP(9/22) Max speed34 kt(13/22) Concealment11.14 km(14/22) Smoke fire bloom5.15 km(9/22) Air detection6.68 km(13/22) Traverse-to-turn ratio5.99 ×(10/22) Main battery caliber152 mm(13/22) Main battery range13.38 km(17/22) HE shell damage2,200(11/19) HE fire chance12%(9/19) AP shell damage3,100(11/22) Main dispersion125.3 m(7/22) Acceleration24.9 s(11/22) AP fuse timer0.03 s(13/22) AP arming threshold25 mm(9/22) Engine power90,000 hp(13/22) Displacement9,150 t(12/22) Power-to-weight9.84 hp/t(9/22) AP pen at 10 km86 mm(17/22) AA DPS165(12/22) AA threat437(13/22) Max armor76 mm(15/22) Citadel belt76 mm(8/22) Deck armor37 mm(11/22) NormSigma2(20 of 22 tied at this value) NormAP ricochet start45°(20 of 22 tied at this value) NormAP auto-bounce angle60°(20 of 22 tied at this value) NormTurn speed retained81%(21 of 22 tied at this value)

Peers in this cohort

Compare Tier IV Cruisers

Show all 21 peers

Stats & specs

Customize in the Build Tool →

Survivability

Hit PointsInitial: 23,100 → 26,800

Displacement9,150 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.

169.3 x 16.85 m, draft 4.1 m

Armor range6–76 mm

Plate armor thicknesses6, 10, 13, 15, 21, 25, 37, 38, 76 mm

Armor material/layer entries38

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: 13.3% → 16.6%

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 (2,412 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 (2,680 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.

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.

13,400

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.

8,000

Repairable: penetration50%

Repairable: citadel10%

Repairable: steering gear50%

Main Battery

ModuleArtillery: 152 mm/53 Mk13/Mk16

Mounts / barrels10 mounts / 12 barrels

Reload timeInitial: 8 s → 7 s

Firing range (base)12.2 km

Firing range (top fire control)13.4 km

Turret traverse10 °/s

Turret armor25 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.

±150°, 2x 163° arc, ±144°, 2x 154° arc, 2x 144° arc, 2x 160° arc

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.

30° off bow / 36° off stern

HE fire DPM vs T4 BB59540

Effective HE DPM vs T4 BB210397

Shell Grouping (σ)2

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{13376}{30} \cdot \frac{8 - 1.1}{1000} + 1.1) \cdot 30 = 125.3 m

125.3 m at 13.4 km

Max Vert Disp

Vertical dispersion ellipse height at max range:

σ_{V} = σ_{H} \cdot radiusOnMax

= 125.3 \cdot 0.6 = 75.2 m

75.2 m at 13.4 km

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}

= 125.3 \cdot \frac{0.6}{2} = 37.6 m

37.6 m at 13.4 km

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}

= 75.2 \cdot \frac{0.6}{2} = 22.6 m

22.6 m at 13.4 km

Turret turn time

180 degrees / 10 deg/s traverse speed = 18 s.

18 s

Shells/min

Zero upgrades: 8 broadside guns x 60 / 8 s base reload = 60. All upgrades (top gun): 8 broadside guns x 60 / 7 s all-upgrades reload = 68.6.

Initial: 60 → 68.6

HE shells

HE Damage2,200

HE Velocity914 m/s

Fire Chance12%

HE penetration

25 mm ≈ 152 mm caliber / 6 (standard HE penetration ratio).

25 mm

HE full-salvo alpha

2,200 HE damage x 8 broadside guns = 17,600.

17,600

HE DPM

Zero upgrades: 17,600 HE full-salvo alpha x 60 / 8 s base reload = 132,000. All upgrades (top gun): 17,600 HE full-salvo alpha x 60 / 7 s all-upgrades reload = 150,857.

Initial: 132,000 → 150,857

Fires/min

Zero upgrades: 60 shells/min x 12% fire chance = 7.2. All upgrades (top gun): 68.6 shells/min x 12% fire chance = 8.23.

Initial: 7.2 → 8.23

AP shells

AP Damage3,100

AP Velocity914 m/s

Min Ricochet45 deg

Guaranteed Ricochet60 deg

Fuse Timer0.025 s

Fuse Threshold25 mm

AP overmatch

floor(152 mm caliber / 14.3) = 10 mm (AP auto-penetrates plating this thick or less).

10 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 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot 914^{1.38} = 233.1 mm

. Matches the in-game spec card.

233.1 mm point-blank

AP Pen Far

Same formula at the ship's max firing range (13.4 km), where the shell has slowed to 364.9 m/s:

P = 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot {364.9}^{1.38} = 65.7 mm

65.7 mm at 13.4 km

AP full-salvo alpha

3,100 AP damage x 8 broadside guns = 24,800.

24,800

AP DPM

Zero upgrades: 24,800 AP full-salvo alpha x 60 / 8 s base reload = 186,000. All upgrades (top gun): 24,800 AP full-salvo alpha x 60 / 7 s all-upgrades reload = 212,571.

Initial: 186,000 → 212,571

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.

Torpedoes

ModuleTorpedoes: Mark 11

Launchers / tubes4 launchers × 3 tubes = 12 tubes

Reload time66 s

Projectile speed56 kt

Range5.49 km

Maximum simulated damage

Estimate of WG's in-game value; matches the in-game port screen within ±5%. Saturation: most targets only intersect one hull section, so the sim transfers ~1/3 of the warhead alpha (2/3 when the warhead blast >= 5000 and the burst reaches a second section). For this ship:

D_{sim} = α \cdot c = 32, 500 \cdot 0.333 = 10, 833

≈ 10,833

Maximum damage (ammunition)

The ammunition card's 'Maximum Damage' stat, exact: warhead alpha / 3 plus the blast addend. This is the per-torpedo number most references quote; the 'Maximum simulated damage' row above is WG's separate geometry-sim stat from the launcher spec panel.

11,733

Torpedo detectability1.1 km

Reaction time

How long a target has to dodge after your torpedo is spotted at its detectability range (lower means less warning):

t_{react} = \frac{1.1 km}{56 kt \times 2.6855} = 7.3 s

. The 2.6855 m/s-per-knot game-speed factor is calibrated from in-game measurement; the community's traditional 2.6 reads about 3% slower. Base value; commander torpedo-concealment skills lower it further. Community torpedo-reaction calculator by u/LorenDovah and u/The_ColorOutofSpace.

7.3 s

Flooding chance

Read straight from the game's own data: this torpedo carries a flooding-chance value of 1.92 per hit, shown as

1.92 \times 100 = 192 %

. Torpedo flood values above 100% are normal: in battle the base chance is scaled down by the target's torpedo protection (the Torp Reduction stat on its Survivability card) and any flood-resistance modifiers, so a value above 100% keeps flooding likely even through partial protection. Not shown on the in-game port screen.

192%

Torpedo launcher traverse25 °/s

Launch arcs140° per side

Torp Turn

Time to rotate the launchers 180 deg:

t_{turn} = \frac{180 °}{25 ° / s} = 7.2 s

7.2 s

Torp Arming180 m

Per-side salvo damage

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 6 x 10,833 = 64,998.

64,998

AA Defense

AA mount pointsInitial: 4 → 12

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.

3.1 km

28 mm Mk2 mod. 2 (upgraded hull only)8×4 28mm

12.7 mm Browning M2 mod. 2 (upgraded hull only)4×1 13mm

76.2 mm Mk22 mod. 2 (stock hull only)4×1 76mm

Guns28 mm Mk2 mod. 2

Continuous DPS

Effective DPS: 40 raw aura damage × 3.5 × 0.9 hit probability = 126 - the same in-game units as the Close-range AA DPS headline.

126

Range3.1 km

Guns12.7 mm Browning M2 mod. 2

Continuous DPS

Effective DPS: 13 raw aura damage × 3.5 × 0.85 hit probability = 39 - the same in-game units as the Close-range AA DPS headline.

Range1.2 km

Total DPS in Aura

Medium 126 + Near 39 = 165

165

See the AA layers diagram ↓

Maneuverability

Engine power90,000 hp

Maximum speed34 kt

Turning circle radius600 m

Rudder shift time5.8 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 = 34 / 4 + 4.9 = 13.4 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.

13.4 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.

24.9 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).

9.5 kt

Acceleration 0-90%

Time to reach 90% of top speed (30.6 kt of 34 kt), from our in-house acceleration model.

24.9 s

Acceleration 0-99%

Time to reach 99% of top speed (33.7 kt of 34 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.

40.1 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{34.0 \cdot 0.5144}{600} = 1.67 ° / s

, so

ratio = \frac{ω_{turret}}{ω_{hull}} = \frac{10}{1.67} = 6.0 \times

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

6.0× slow

See the full acceleration curve ↓

Concealment

Detectability by sea11.14 km

Detectability by air6.68 km

Smoke firing penalty5.15 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.

13.38 km

Detect when firing (air)

Air detectability plus the gun-firing bloom (3.04 km, which tracks main-battery caliber x 0.020). Matches the in-game 'Detect Firing Air' value on every captured ship.

9.72 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.

13.14 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.

9.68 km

Guaranteed Detect2 km

✦

Consumables

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

Sonar2 charges · 180 s reload · 90 s active · 3.72 km ship detect
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{124 \times 30}{1000} = 3.72 km$
· 2.67 km torpedo detect
ƒ
Derived from the consumable's 30 m grid-unit range (km = grid units x 30 / 1000): $\frac{89 \times 30}{1000} = 2.67 km$

Catapult Fighter2 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

Module options (3)

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

HullTrade-off

Hit points23,100 → 26,800
Rudder shift9.8 → 7.5 s
AA mounts4 → 12
Close-range AA DPS6 → 53
Maximum AA range3.5 → 3.1 km

Fire controlUpgrade

Main battery range12,160 → 13,376 m

ArtilleryUpgrade

Base reload8 → 7 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)2

Max Horiz Disp125.3 m at 13.4 km

Horizontal dispersion ellipse width at max range, from the verified WoWS dispersion model:  $σ_{H} = (\frac{R}{30} \cdot \frac{idealRadius - minRadius}{idealDistance} + minRadius) \cdot 30$   $= (\frac{13376}{30} \cdot \frac{8 - 1.1}{1000} + 1.1) \cdot 30 = 125.3 m$

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.

Max Vert Disp75.2 m at 13.4 km

Vertical dispersion ellipse height at max range: $σ_{V} = σ_{H} \cdot radiusOnMax$ $= 125.3 \cdot 0.6 = 75.2 m$

Shell scatter height @ 10 km56.1 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  $delim \cdot R_{m a x} = 0.5 \cdot 13376 = 6688$  m, and  $radiusOnMax = 0.6$  at 13376 m. Above the kink:  $k = 0.5 + (0.6 - 0.5) \cdot \frac{10000 - 6688}{13376 - 6688} = 0.5495$ , so  $σ_{V} = σ_{H} \cdot k = 102 \cdot 0.5495 = 56.1 m$ .

Med Horiz Disp37.6 m at 13.4 km

50%-hit horizontal radius: $σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}$ $= 125.3 \cdot \frac{0.6}{2} = 37.6 m$

Med Vert Disp22.6 m at 13.4 km

50%-hit vertical radius: $σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}$ $= 75.2 \cdot \frac{0.6}{2} = 22.6 m$

Dispersion familyCruiser Disp.

Standard cruiser dispersion baseline.

AP Pen Close233.1 mm point-blank

Canonical community AP formula (jcw780/wows_shell), evaluated at muzzle velocity:  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v_{0}^{1.38}$   $= 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot 914^{1.38} = 233.1 mm$ . Matches the in-game spec card.

AP Pen Far65.7 mm at 13.4 km

Same formula at the ship's max firing range (13.4 km), where the shell has slowed to 364.9 m/s:  $P = 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot {364.9}^{1.38} = 65.7 mm$ .

AP pen 5 km140 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 km86 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.

HE flight time @ 10 km5.82 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.315 \cdot {0.152}^{2}}{8 \cdot 47.7} = 5.99 \times 10^{- 5}$ . That runs from a 914 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 km5.83 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.3164 \cdot {0.152}^{2}}{8 \cdot 47.6} = 6.03 \times 10^{- 5}$ . That runs from a 914 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 penetration25 mm

25 mm ≈ 152 mm caliber / 6 (standard HE penetration ratio).

AP overmatch10 mm

floor(152 mm caliber / 14.3) = 10 mm (AP auto-penetrates plating this thick or less).

AP AOE Radius10

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 alpha8

Barrels that can bear on one beam (8 of 12); casemate/wing mounts only fire one side.

Turret turn time18 s

180 degrees / 10 deg/s traverse speed = 18 s.

HE full-salvo alpha17,600

2,200 HE damage x 8 broadside guns = 17,600.

AP full-salvo alpha24,800

3,100 AP damage x 8 broadside guns = 24,800.

HE DPMInitial: 132,000 → 150,857

Zero upgrades: 17,600 HE full-salvo alpha x 60 / 8 s base reload = 132,000. All upgrades (top gun): 17,600 HE full-salvo alpha x 60 / 7 s all-upgrades reload = 150,857.

AP DPMInitial: 186,000 → 212,571

Zero upgrades: 24,800 AP full-salvo alpha x 60 / 8 s base reload = 186,000. All upgrades (top gun): 24,800 AP full-salvo alpha x 60 / 7 s all-upgrades reload = 212,571.

Shells/minInitial: 60 → 68.6

Zero upgrades: 8 broadside guns x 60 / 8 s base reload = 60. All upgrades (top gun): 8 broadside guns x 60 / 7 s all-upgrades reload = 68.6.

Fires/minInitial: 7.2 → 8.23

Zero upgrades: 60 shells/min x 12% fire chance = 7.2. All upgrades (top gun): 68.6 shells/min x 12% fire chance = 8.23.

Torpedoes

Torpedo detectability1.1 km

Estimated torpedo reaction time7.3 s

detectability / (speed kt x 2.6855 game-speed factor, m/s per knot, calibrated from in-game measurement; the community's traditional 2.6 reads about 3% slower).

Torpedo speed56 kt

Travel time to max range36.5 s

range / (speed kt x 2.6855 game-speed factor, m/s per knot, calibrated from in-game measurement).

Torpedo module damage900

Per-torpedo module/blast damage parameter from in-game data. Most torpedoes carry 500 to 2,000; ships announced by WG as dealing increased module damage carry 9,000 to 12,000, so their hits knock out engines, rudders, and turrets far more often. Comparative figure; the exact module-HP conversion is not published.

Tube count12

4 launchers x 3 tubes.

Per-side salvo6 torpedoes

tube count / 2 (symmetric port/starboard launcher layout; common on cruisers and battleships with deck torpedoes).

Full-salvo damage129,996

All tubes hitting one target: tubes x per-torpedo simulated damage = 12 x 10,833 = 129,996.

Per-side salvo damage64,998

One side firing, all torpedoes hitting: per-side tubes x per-torpedo simulated damage = 6 x 10,833 = 64,998.

AA defense

AA DPS at max range126

Only families that reach 3.1 km contribute at the outer edge of the AA bubble. In-game families: 1in Mk2 Mod2 8x4 -> 126 DPS @ 3.1 km; Browning M2 Mod2 4x1 -> 39 DPS @ 1.2 km.

Maximum AA range3.1 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 range126 DPS @ 3.1 km, 165 DPS @ 1.2 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-blank165

Sum of every family's average DPS, achievable only inside the closest-range family (1.2 km).

AA threat index437

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.

Near aura range1.2 km

Armor Beta

Hull HP 23,100 → 26,800 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 & stern10 mm

Overmatched by 134+ AP guns across the bracket. Can’t reliably bow-tank; gets bow-citadelled and overpenned.

Belt / citadel76 mm

Thin belt: battleship AP citadels straight through it broadside. Rely on angle, speed and concealment, never sit flat.

Farming6 mm

Superstructure and extremities take HE pens and AP overpens from nearly any gun: steady chip damage. Fire resistance 17%, fires burn 30s. Range-by-range in the Compare tool →

Section	Plates	HP cap	Threats	Tactic
Bow	10 mm primary (range 10–37 mm)	3,500 (13% of HP)	Overmatched by 150mm+ AP (De Ruyter, Karlsruhe)Angle bounces 127mm10 mm: HE pens from 127mm+	Bow-tank fits behind this exterior plate. Saturation is FAST here; the cap is often only a few thousand HP.
Hull (midship)	6 mm primary (range 6–38 mm)	20,100 (75% of HP)	Overmatched by 127mm+ AP (Shenyang, Nicholas)6 mm: HE pens from 127mm+	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	10 mm primary (range 10–25 mm)	1,900 (7% of HP)	Overmatched by 150mm+ AP (De Ruyter, Karlsruhe)Angle bounces 127mm10 mm: HE pens from 127mm+	Mirror of bow. Same fast saturation.
Citadel	76 mm primary (range 13–76 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	10 mm primary (range 10–37 mm)	1,100 (4% 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	13,400 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.
AA mount (28 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	8,000 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

Exteriors

Skins & permanent camouflages

Every custom exterior Omaha 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.

2021-12-16 · Patch notes Holiday Update: Chilling With the Beasts Patch notes

Omaha

Omaha Community Stats

Omaha Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get Omaha

Builds

Cohort position

Peers in this cohort

Stats & specs

See all derived stats

Main battery formulas

Torpedoes

AA defense

Armor Beta

Ship Charts

Skins & permanent camouflages

Primary official WG sources

Signature Traits