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

Work the islands rather than a firing line
Avoid: Pushing in blind because the kit says brawler

Key characteristics

High HE / fire outputHigh AP DPMSonarFast turret traverseMany torpedo launchersShort AA reach

On this page

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

Community Data

Omaha Community Stats

Across 14,000+ Standard battles from 440+ players, Omaha averages a 55% win rate, 31,500 damage and 0.9 kills per battle, and survives 23% of them.

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 bring 8.2 fires a minute (1st of 20), with Sonar as her vision tool: it 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: turret traverse rate in T4 CAs (10, 6th of 23) and best many torpedo launchers in T4 CAs (4, 3rd of 21). The trade is AA reach in T4 CAs (3.1 km, 23rd of 23). 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

Work the islands rather than a firing line. Sonar (3.7 km on ships, 2.7 km on torpedoes) is the whole kit, and it only pays inside that radius, so hold the cover beside a contested cap and use it to catch destroyers and torpedoes coming around the corner: HE into the destroyer, AP into any cruiser that shows you a broadside while it sits in smoke. Firing from a friendly smoke reveals you at 5.2 km, so pick the salvo rather than holding the trigger. 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. The helm answers quickly (5.8 s), so she can break an incoming salvo that slower hulls have to eat.

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
AP DPM machine · 212571 AP
High fire pressure · 8.23 fires/min
Fast turret traverse · 10°/s
Flat arc HE shells · 914 m/s
Fire-starter cruiser

Many torpedo launchers ↗

4 launchers, best of T4 CAs. Each fires its own spread: aim them at different escape routes, or stack them on one line for more hits.

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.

While you save up, check active promo codes for free doubloons, camouflages, and other rewards.

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

Official WG availability sources

WoWS PC and Legends: Cross-Benefit Program Returns Free reward Start: 2024-05-20
- Below is the list of rewards you can earn in World of Warships: Legends for playing on PC.
- For first battle completed:
- American Tier IV cruiser Omaha

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, or browse the Ship Builds guide for proven loadouts across the fleet.

Cohort position

Hide ▾

Where Omaha sits among Tier IV CAs (22 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 (3/23) Top 10%AP DPM212,571 (3/23) Top 25%Rudder shift5.8 s (5/23) Top 25%AP velocity914 m/s (5/23) Top 25%HE velocity914 m/s (5/20) Top 25%Power / turn radius150 hp/m (6/23) 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 (7 of 23 in cohort) WorstAA range3.1 km (23/23) 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(9/23) Max speed34 kt(13/23) Concealment11.14 km(15/23) Smoke fire bloom5.15 km(10/23) Air detection6.68 km(14/23) Turning circle600 m(7/23) Main battery caliber152 mm(13/23) Main battery range13.38 km(17/23) HE shell damage2,200(11/20) HE fire chance12%(9/20) AP shell damage3,100(11/23) Main dispersion125.3 m(7/23) Time to 90% speed23.6 s(10/23) Acceleration (0-12 kt)8.4 s(10/23) AP fuse timer0.025 s(13/23) AP arming threshold25 mm(10/23) Engine power90,000 hp(13/23) Displacement9,150 t(13/23) Power-to-weight9.84 hp/t(9/23) AP pen at 10 km86 mm(18/23) AA DPS165(13/23) AA threat437(14/23) Max armor76 mm(15/23) Citadel belt76 mm(8/23) NormSigma2(21 of 23 tied at this value) NormAP ricochet start45°(21 of 23 tied at this value) NormAP auto-bounce angle60°(21 of 23 tied at this value) NormTurn speed retained81%(22 of 23 tied at this value)

Peers in this cohort

Compare Tier IV Cruisers

Show all 22 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, plus draft. 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

stock hull: 1 − 0.8668 fire coefficient = 13.3%; top hull: 1 − 0.8335 fire coefficient = 16.6%. Lowers how often hits set you on fire. It does not reduce the damage a burning fire does per second; fires burn at the full rate on every ship.

Initial: 13.3% → 16.6%

Fire duration30 s

Fire damage

One unattended fire: 0.003 of max HP per second (0.3%) × 30 s = 0.09 of the pool; 0.09 × 26,800 HP = 2,412 HP on this ship. 4 fire points can burn at once.

0.3% of HP per second

Flood duration40 s

Flood damage

One unattended flood: 0.0025 of max HP per second (0.25%) × 40 s = 0.1 of the pool; 0.1 × 26,800 HP = 2,680 HP on this ship.

0.25% of HP per second

Torp Reduction

1 − 0.333 hull torpedo-damage coefficient / 0.333 unprotected baseline = 0%. Reduces torpedo hit damage. It does not affect flooding: floods start as often and tick at the full rate.

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%

Bow section HP

Damage saturation pool for the bow: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 3,500 = 7,000), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

3,500

Auxiliary section HP

Damage saturation pool for the auxiliary room: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 1,500 = 3,000), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

1,500

Hull section HP

Damage saturation pool for the hull: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 20,100 = 40,200), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

20,100

Superstructure section HP

Damage saturation pool for the superstructure: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 1,100 = 2,200), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. The superstructure is not exempt: it saturates exactly like the bow and stern, so shells aimed at it stop dealing full damage once this pool is used up. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

1,100

Stern section HP

Damage saturation pool for the stern: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 1,900 = 3,800), then further hits on it deal half damage. A penetration deals 0.33 × the shell's max damage; once the section is saturated it deals exactly half of that (0.5 × 0.33 = 0.165 × max damage), so a 3,000-damage shell's pen goes from 990 to 495. Overpens (0.1 × max damage) and citadels (1.0 ×) ignore saturation. Pens on the ship's other, unsaturated sections still deal the normal 0.33 ×. A larger pool keeps that part of the ship taking full damage for longer; a small one saturates fast and protects the ship's HP.

1,900

Citadel section HP

This section has no practical saturation cap: every hit here keeps dealing its normal share of damage (on most ships the citadel; on many destroyers the casemate).

No saturation cap

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. 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

180° − 150° (the most restricted aft-facing mount's arc) = 30° off bow; 180° − 144° (the most restricted forward-facing mount's arc) = 36° off stern. 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.

30° off bow / 36° off stern

Shell Grouping (σ)2

Dispersion type

In practice: the baseline curve for a standard cruiser -- at max range (13.4 km) shells land in an ellipse about 125 m wide and 75 m tall. Also on this curve (215): AL Baltimore, AL Chapayev, AL Cheshire, AL Harbin, AL Montpelier, AL Tallinn, AL Zara, Aberdeen, Accord, Agano, Albemarle, Algérie and 203 more.

Standard cruiser

Max Horiz Disp

Horizontal dispersion ellipse width at max range, from the 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 alpha2,200

HE Velocity914 m/s

Fire Chance12%

HE fire DPM vs T4 BB59540

Effective HE DPM vs T4 BB210397

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 × 0.12 (12% fire chance) = 7.2. All upgrades (top gun): 68.6 shells/min × 0.12 (12% fire chance) = 8.23.

Initial: 7.2 → 8.23

AP shells

AP alpha3,100

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

AP formula 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

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 speed56.0 kt

Range5.49 km

Maximum simulated damage

Most targets only intersect one hull section, so a hit transfers about 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

. In battle, a hit on the torpedo belt deals the per-hit figure × (1 − the target's torpedo protection %), a bow or stern hit deals it in full, and a torpedo never counts as a citadel hit.

≈ 10,833

Maximum damage (ammunition)

32,500 warhead alpha / 3 + 900 blast = 11,733. Warhead alpha / 3 plus the blast addend: the per-torpedo damage figure. The 'Maximum simulated damage' row above applies target geometry to the same warhead.

11,733

Torpedo module damage

Per-torpedo module/blast damage parameter. 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.

900

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

. 2.6855 converts knots to m/s on the game clock. Base value; commander torpedo-concealment skills lower it further.

7.3 s

Flooding chance

This torpedo carries a flooding-chance value of 1.92 per hit, shown as

1.92 \times 100 = 192 %

. 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.

192%

Torpedo launcher traverse25 °/s

Launch arcswing 140° (one launcher per beam)

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. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

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.

Initial: 3.5 km → 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 speed34.0 kt

Turning circle radius600 m

Rudder shift timeInitial: 7.5 s → 5.8 s

Engine power-boost threshold7.0 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. Base value; speed modifiers scale it.

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, using the ship's own reverse-power ratio. The full curve is on the acceleration chart. Full reverse stops about a quarter faster than a plain Stop order from top speed.

25.9 s

Engine boost threshold (reverse)

Speed below which the engine's built-in power boost applies in reverse.

9.5 kt

Acceleration 0-90%

Time to reach 90% of top speed (30.6 kt of 34.0 kt).

23.6 s

Acceleration 0-99%

Time to reach 99% of top speed (33.7 kt of 34.0 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.

37.2 s

Guns in a full turn

With the rudder hard over the hull turns 6.9°/s, so a target drifts across the bow at that rate. Turret traverse minus hull turn: 10 − 6.9 = +3.1°/s, so the guns hold the target through the turn. Main Battery Mod. 2 (+20% traverse) and Mod. 3 (−15%) move this line.

hold target (+3.1°/s spare)

See the full acceleration curve ↓

Concealment

Detectability by sea

Base value, no camouflage. With a Grade IV permanent camo (or any disposable camo): 11.14 km x 0.955 = 10.64 km. Camouflage does not change detectability by air.

11.14 km

With Grade IV camouflage (sea)

Detectability by sea 11.14 km x 0.955 (Grade IV permanent camo or any disposable camo) = 10.64 km.

10.64 km

Detectability by air6.68 km

Smoke firing penalty5.15 km

Detect when firing (sea)

max(main battery range, sea detectability 11.14 km) = 13.38 km. Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach.

13.38 km

Detect when firing (air)

Air detectability 6.68 km + gun-firing bloom 3.04 km = 9.72 km. The bloom tracks main-battery caliber 152 mm × 0.020 = 3.04 km.

9.72 km

Detect when on fire (sea)

Sea detectability 11.14 km + 2.0 km while burning = 13.14 km.

13.14 km

Detect when on fire (air)

Air detectability 6.68 km + 3.0 km while burning = 9.68 km.

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 · 70 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 shift7.5 → 5.8 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

Under the hood

Show ▾

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

The constants behind the formulas and the long tail: shell and dispersion inputs, fixed-range anchors, salvo math, layered AA. Click the formula chip on any row to see how it is calculated.

Main battery formulas

vs standard cruiserStandard

The standard cruiser dispersion curve.

Shell scatter width @ 5 km67.5 m

(166.7 × (8 − 1.1) / 1000 + 1.1) × 30 = 67.5 m. Horizontal scatter at a fixed 5 km, from the same dispersion model as the rows below - a knife-fight-range anchor comparable across ships.

Shell scatter width @ 10 km102 m

(333.3 × (8 − 1.1) / 1000 + 1.1) × 30 = 102 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 height @ 5 km28.6 m

How tall the scatter ellipse is at a fixed 5 km, from the same model, comparable from ship to ship. 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. Below the kink:  $k = 0.2 + (0.5 - 0.2) \cdot \frac{5000}{6688} = 0.4243$ , so  $σ_{V} = σ_{H} \cdot k = 67.5 \cdot 0.4243 = 28.6 m$ .

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  $σ_{V} = σ_{H} \cdot k = 102 \cdot 0.5495 = 56.1 m$ .

AP pen 5 km140 mm

AP penetration at a fixed 5 km, from the same ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot {632.2}^{1.38} = 140 mm$ , where 632.2 m/s is the shell's speed when it arrives at 5 km (from 914 m/s at the muzzle). 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, from the same ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 1772 \cdot {47.6}^{0.69} \cdot {0.152}^{- 1.07} \cdot {445.4}^{1.38} = 86 mm$ , where 445.4 m/s is the shell's speed when it arrives at 10 km (from 914 m/s at the muzzle). 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 because the game clock runs faster than real time. 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 because the game clock runs faster than real time. Lower is better, since a faster shell is harder to dodge and needs less lead.

Guns per full salvo (alpha, DPM)8

Counted from each mount's firing arc: most barrels that bear at once: 8 of 12, on the beam; casemate/wing mounts only fire one side.

Model inputs

Krupp (AP)1,772

Armor-penetration constant of the AP shell; penetration scales straight with it, so a 10% higher Krupp is 10% more penetration at every range.

AP shell mass47.6 kg

Enters penetration as mass^0.69 and slows the shell's drag deceleration, so a heavier shell keeps more velocity at range.

AP drag coefficient0.3164

Air drag on the AP shell in flight; lower keeps velocity, and with it penetration, at long range.

AP muzzle velocity914 m/s

Starting speed of the AP shell; penetration scales with velocity^1.38.

HE muzzle velocity914 m/s

Starting speed of the HE shell; sets its flight time and lead.

idealRadius8

Horizontal dispersion growth per idealDistance of range, in 30 m units; the slope of the scatter-width line.

minRadius1.1

Horizontal dispersion at zero range, in 30 m units; the intercept of the scatter-width line.

idealDistance1,000 m

Range step over which horizontal dispersion grows by idealRadius.

taperDist4,000 m

Inside this range the scatter width tapers toward minRadius instead of following the line.

radiusOnZero0.2

Vertical scatter as a share of horizontal at zero range.

radiusOnDelim0.5

Vertical scatter as a share of horizontal at the delim point.

radiusOnMax0.6

Vertical scatter as a share of horizontal at maximum range.

delim0.5

Where the vertical-scatter curve bends, as a share of maximum range.

Torpedoes

Estimated torpedo reaction time7.3 s

1100 m / (56.0 kt × 2.6855) = 7.3 s. detectability / (speed kt x 2.6855 m/s per knot on the game clock).

Torpedo speed56.0 kt

Travel time to max range36.5 s

5490 m / (56.0 kt × 2.6855) = 36.5 s. range / (speed kt x 2.6855 m/s per knot on the game clock).

Tube count12

4 launchers × 3 tubes.

Per-side salvo6 torpedoes

12 wing tubes / 2 = 6: the launchers sit one per beam, so only half of them reach any one side. Each launcher reloads on its own, so she can fire one beam, turn, and fire the other without waiting.

Full-salvo damage129,996

All tubes hitting one target: tubes x per-torpedo simulated damage = 12 x 10,833 = 129,996. Each hit on the target's torpedo belt is reduced by its torpedo protection %.

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.

AA DPS layered by range126 DPS @ 3.1 km, 165 DPS @ 1.2 km

@ 3.1 km: 126 from one family; @ 1.2 km: 126 + 39 = 165. 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

126 + 39 = 165 DPS: the sum of every family's average DPS, achievable only inside the closest-range family (1.2 km).

AA threat index437

126 × 3.1 + 39 × 1.2 = 437. 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

Open in Charting Tool

Ship Charts

Background

A high-speed scout cruiser carrying torpedo armament and relatively powerful artillery, with part of the guns placed in turrets. She was the first cruiser in the U.S. Navy to receive aircraft handling equipment.

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.

Bow & stern10 mm

Overmatched by 136+ 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.

Exteriors

Skins & permanent camouflages

Every custom exterior Omaha can equip.

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

Omaha Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get Omaha

Builds

Cohort position

Peers in this cohort

Stats & specs

Under the hood

Main battery formulas

Model inputs

Torpedoes

AA defense

Ship Charts

Background

Armor Beta

Skins & permanent camouflages

Primary official WG sources

Signature Traits