GamingDiver / WoWs Legends Ships / ARP Musashi

World of Warships: Legends ship guide

ARP Musashi

Beta

Japan · Tier VIII · Battleship · Premium · Musashi Variant

Sniper battleshipA sniper: farm AP citadels from range, repositioning before the line closes.

Playstyle

Sit 14-17 km from the brawl line and bow toward the closest threat
Avoid: Pushing the brawl line to chase a kill

Key characteristics

460 mm AP overmatchHeavy AP penHeavy HE shellsWide always-pen zoneSlowWeak AA

On this page

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

Community Data

ARP Musashi Community Stats

Across 4,400+ Standard battles from 79 players, ARP Musashi averages a 63% win rate, 97,900 damage and 1.1 kills per battle, and survives 43% of them.

Community Data

ARP Musashi Community Stats

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

Playstyle

Overview

ARP Musashi is a Tier VIII Japanese sniper battleship (17.2 km): the long main battery reach lets her land AP citadels from positions where peer BBs have to push to engage. HE pen sits at the 1/4 caliber ratio instead of the standard 1/6, so HE spam is a real damage option here. Standout traits: best heavy AP shells in T8 BBs (14,800, 1st of 33) and best AP overmatch threshold in T8 BBs (32.1 mm, 1st of 33). The trade is worst surface detection in T8 BBs (16.1 km, 32nd of 33).

Positioning

Sit 14-17 km from the brawl line and bow toward the closest threat. The heavy bow plate holds an angle indefinitely against same-tier guns, which is what protects the citadel; the citadel sides do not survive a broadside trade even at long range. Rotate one map cell back if a flank starts to collapse rather than holding the angle, and keep bow on between salvos. With 18.7 s on the rudder she starts turning late, so the angle has to be set before you are shot at.

Potato Avoidance

Pushing the brawl line to chase a kill

The kit pays out at range; every map cell you push forward is one your sniper advantage shrinks, and you stop trading better than the peer BBs you out-range.

Signature Traits

ELITE MAIN BATTERY ↗

Heavy AP shells · 14800 damage
Big-caliber AP overmatch · 32.1 mm
Heavy HE shells · 7300 damage
Close-range AP brick · 931.3 mm
Long-range AP brick · 620.29 mm

High HP pool ↗

85000 HP, top decile of T8 BBs.

Thickest plate ↗

500 mm on her single heaviest plate, top decile of T8 BBs. Its thickest plate is beyond any HE or AP overmatch in the game, though that is one belt rather than the ship as a whole.

Easily spotted ↗

16.1 km surface detect, worst of T8 BBs. Visible before you can react; position early.

Weak AA ↗

224 AA DPS, bottom decile of T8 BBs. Aircraft chew through with impunity; lean on positioning over AA.

Acquisition

How to get ARP Musashi

ARP Musashi is a Premium ship and not available to unlock in the Tech Tree. Acquisition path: Containers. Container chances are shown as the listed odds of receiving this exact ship, dividing grouped ship-pool odds across the resolved ships and including nested container paths when a crate can drop another crate.

ContainersAppears in official container odds below; availability depends on the container being sold or awarded.

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

Best listed chance for this ship

Arpeggio II crate 1% VIII ARP Musashi + Flag: ARP Musashi Collaboration · Arpeggio II crate

Show direct source rows

Arpeggio II crate 1% · VIII ARP Musashi + Flag: ARP Musashi

Want the full picture? Each container page charts the odds as you open more crates - including ~~pity~~ guaranteed-reward timers and, for GD Supporters, pack math personalized to your port.

Builds

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

Open in Build Tool →

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 ARP Musashi sits among Tier VIII BBs (32 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.

BestMain battery caliber460 mm (1 of 2 tied) BestSecondary HE alpha2,600 (1 of 6 tied) BestAP pen at 10 km738 mm (1 of 2 tied) Top 10%Hit points85,000 HP (3/33) Top 10%AP ricochet start50° (3/33) Top 10%AP auto-bounce angle65° (3/33) Top 10%Max armor500 mm (3/33) Top 25%HE DPM131,400 (7/31) Top 25%AP DPM266,400 (7/33) Top 25%Main dispersion207.8 m (9/33) Top 25%Secondary fire chance10% (8/31) Top 25%Citadel belt410 mm (5/31) Bottom 25%Rudder shift18.7 s (29/33) Bottom 25%Secondary DPM (per side)177,849 (27/33) Bottom 25%Acceleration (0-12 kt)15 s (30/33) Bottom 25%Power-to-weight2.06 hp/t (29/33) Bottom 25%Flak damage per salvo (expected)1,208 (28/33) Bottom 10%Max speed27 kt (31/33) WorstStealth profile16.07 km / 12.86 km (1 of 3 tied / 1 of 3 tied) WorstSmoke fire bloom15.97 km (1 of 3 tied) WorstAP arming threshold77 mm (1 of 2 tied) WorstDisplacement72,810 t (1 of 2 tied) WorstSecondary range5 km (1 of 16 tied) WorstAA DPS224 (1 of 2 tied) WorstAA threat786 (1 of 2 tied) WorstNo torpedoes (26 of 33 in cohort) WorstRepair charges2 (1 of 9 tied)

See 20 mid-pack stats

Not standouts for ARP Musashi -- 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.

Turning circle900 m(19/33) Main battery range17.2 km(15/33) Main battery reload30 s(13/33) Sigma1.65(25/33) HE fire chance35%(19/31) Fires per minute6.3(23/31) Secondary HE pen26 mm(9/31) AP velocity780 m/s(25/33) HE velocity805 m/s(23/31) Time to 90% speed35.1 s(23/33) Engine power150,000 hp(23/33) Power / turn radius166.7 hp/m(23/33) Effective HE DPM (incl. fire)183,042(13/31) AA range5 km(19/33) NormSecondary dispersion bracket57(24 of 33 tied at this value) NormAP fuse timer0.033 s(30 of 33 tied at this value) NormTurn speed retained81%(32 of 33 tied at this value) NormRepair heal rate0.5 %/s(24 of 33 tied at this value) NormBow armor32 mm(29 of 31 tied at this value) NormStern armor32 mm(29 of 31 tied at this value)

Peers in this cohort

Compare Tier VIII Battleships

Show all 32 peers

Stats & specs

Customize in the Build Tool →

Survivability

Hit Points85,000

Displacement72,810 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.

263 x 38.9 m

Armor range16–500 mm

Plate armor thicknesses16, 18, 19, 25, 32, 50, 57, 75, 80, 100, 135, 140, 200, 230, 270, 290, 340, 350, 410, 500 mm

Armor material/layer entries66

Fire resistance

top hull: 1 − 0.6004 fire coefficient = 40%. 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.

40%

Fire duration60 s

Fire damage

One unattended fire: 0.003 of max HP per second (0.3%) × 60 s = 0.18 of the pool; 0.18 × 85,000 HP = 15,300 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: 0.005 of max HP per second (0.5%) × 40 s = 0.2 of the pool; 0.2 × 85,000 HP = 17,000 HP on this ship.

0.5% of HP per second

Torp Reduction

1 − 0.15 hull torpedo-damage coefficient / 0.333 unprotected baseline = 55%. Reduces torpedo hit damage. It does not affect flooding: floods start as often and tick at the full rate.

55%

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.

48,700

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.

29,200

Effective HP

Base 85,000 HP plus everything Repair Party can restore: 0.005 of max HP per second (0.5%) × 28 s × 85,000 HP = 11,900 HP per charge, × 2 charges = 23,800 HP. Ceiling, not a prediction: a charge only restores damage actually taken, and only the regeneratable share of it. In practice ships realize about half of this, mostly because half the charges go unspent; a charge that is used returns about 97% of the per-charge figure above.

94,444–108,800

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 × 9,500 = 19,000), 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.

9,500

Casemate section HP

Damage saturation pool for the casemate: penetrations here deal their normal share until twice this much penetration damage has landed on the section (2 × 7,700 = 15,400), 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.

7,700

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 × 73,000 = 146,000), 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.

73,000

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 × 2,300 = 4,600), 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.

2,300

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 × 9,700 = 19,400), 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.

9,700

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: 460 mm/45 Type94

Mounts / barrels3 mounts / 9 barrels

Reload time30 s

Firing range17.2 km

Turret traverse4 °/s

Turret armor650 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 ±149°

Guns to bear

180° − 149° (the most restricted aft-facing mount's arc) = 31° off bow; 180° − 149° (the most restricted forward-facing mount's arc) = 31° 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.

31° off bow / 31° off stern

See the firing-arcs diagram ↓

Shell Grouping (σ)1.65

Dispersion type

In practice: 10% tighter (better) horizontal dispersion and 19% more vertical spread at max range (17.2 km) than a standard battleship: about 208 m wide × 166 m tall, against 232 m × 139 m. Also on this curve (19): ARP Haruna, ARP Kirishima, Ashitaka, Daisen, Hizen, Hyūga, Hyūga W, Inamura, Ise, Ishizuchi, Iwami, Iwami B and 7 more.

Japanese battleship

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{17198}{30} \cdot \frac{10 - 2.8}{1000} + 2.8) \cdot 30 = 207.8 m

207.8 m at 17.2 km

Max Vert Disp

Vertical dispersion ellipse height at max range:

σ_{V} = σ_{H} \cdot radiusOnMax

= 207.8 \cdot 0.8 = 166.3 m

166.3 m at 17.2 km

Med Horiz Disp

50%-hit horizontal radius:

σ_{H, 50} = σ_{H} \cdot \frac{0.6}{σ}

= 207.8 \cdot \frac{0.6}{1.65} = 75.6 m

75.6 m at 17.2 km

Med Vert Disp

50%-hit vertical radius:

σ_{V, 50} = σ_{V} \cdot \frac{0.6}{σ}

= 166.3 \cdot \frac{0.6}{1.65} = 60.5 m

60.5 m at 17.2 km

Turret turn time

180 degrees / 4 deg/s traverse speed = 45 s.

45 s

Shells/min

Zero upgrades: 9 broadside guns x 60 / 30 s base reload = 18. All upgrades (Main Battery Mod. 3 = -10% reload): 9 broadside guns x 60 / 27 s all-upgrades reload (30 s × 0.9 Main Battery Mod. 3 = 27 s) = 20.

Initial: 18 → 20

HE shells

HE alpha7,300

HE Velocity805 m/s

Fire Chance35%

HE fire DPM vs T8 BB51642

Effective HE DPM vs T8 BB183042

HE penetration

115 mm ≈ 460 mm caliber / 4 (improved HE penetration: German BBs, Yamato-class, and a handful of others).

115 mm

HE full-salvo alpha

7,300 HE damage x 9 broadside guns = 65,700.

65,700

HE DPM

Zero upgrades: 65,700 HE full-salvo alpha x 60 / 30 s base reload = 131,400. All upgrades (Main Battery Mod. 3 = -10% reload): 65,700 HE full-salvo alpha x 60 / 27 s all-upgrades reload (30 s × 0.9 Main Battery Mod. 3 = 27 s) = 146,000.

Initial: 131,400 → 146,000

Fires/min

Zero upgrades: 18 shells/min × 0.35 (35% fire chance) = 6.3. All upgrades (Main Battery Mod. 3 = -10% reload): 20 shells/min × 0.35 (35% fire chance) = 7.

Initial: 6.3 → 7

AP shells

AP alpha14,800

AP Velocity780 m/s

Min Ricochet50 deg

Guaranteed Ricochet65 deg

Fuse Timer0.033 s

Fuse Threshold77 mm

AP pen max range621 mm

AP overmatch

floor(460 mm caliber / 14.3) = 32 mm (AP auto-penetrates plating this thick or less).

32 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 2831 \cdot 1460^{0.69} \cdot {0.46}^{- 1.07} \cdot 780^{1.38} = 971.1 mm

971.1 mm point-blank

AP Pen Far

Same formula at the ship's max firing range (17.2 km), where the shell has slowed to 563.7 m/s:

P = 10^{- 7} \cdot 2831 \cdot 1460^{0.69} \cdot {0.46}^{- 1.07} \cdot {563.7}^{1.38} = 620.4 mm

620.4 mm at 17.2 km

AP full-salvo alpha

14,800 AP damage x 9 broadside guns = 133,200.

133,200

AP DPM

Zero upgrades: 133,200 AP full-salvo alpha x 60 / 30 s base reload = 266,400. All upgrades (Main Battery Mod. 3 = -10% reload): 133,200 AP full-salvo alpha x 60 / 27 s all-upgrades reload (30 s × 0.9 Main Battery Mod. 3 = 27 s) = 296,000.

Initial: 266,400 → 296,000

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.

400

AA Defense

AA mount points14

Maximum AA range

Longest-reaching family on the in-game AA card. Base AirDefense aura max range is 3.1 km; dual-purpose mount auras extend it.

5 km

25 mm Type96 mod. 28×3 25mm

25 mm Type96 mod. 14×3 25mm

13 mm Type932×2 13mm

127 mm Type89 A1 mod. 2 (DP)

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

6×2 127mm

Guns127 mm Type89 A1 mod. 2 (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 63 from dual-purpose secondaries firing as AA in this range band.

Range5 km

Guns25 mm Type96 mod. 1 + 25 mm Type96 mod. 2

Continuous DPS

Effective DPS: 49 raw aura damage × 3.5 × 0.85 hit probability = 146 - the same in-game units as the Close-range AA DPS headline.

146

Range3.1 km

Total DPS in Aura

Far 63 + Outer Near 146 = 209

209

Guns13 mm Type93

Continuous DPS

Effective DPS: 5 raw aura damage × 3.5 × 0.85 hit probability = 15 - the same in-game units as the Close-range AA DPS headline.

Range1.2 km

Total DPS in Aura

Far 63 + Outer Near 146 + Inner Near 15 = 224

224

AA explosions

Each ~2 s salvo fires 2 AA explosions in quick succession, each leaving 3 clouds ahead of the attacking squadron, plus 1 stray cloud farther out that appear off-beat between salvos - up to 7 clouds per salvo × 230 damage each. Planes that fly into a cloud take its damage; clouds dissipate before the next salvo lands. Defensive AA Fire, where fitted, multiplies the AA explosions within each salvo, and commander skills that raise the Number of AA explosions add to it.

2 per salvo, 3 clouds each + 1 outer cloud

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 salvos 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.

75%

Salvo interval

A new flak salvo (the AA explosions above) fires roughly every 2 s.

every ~2 s

Fired by

Flak keeps firing while at least one secondary battery mount is operational - even losing every dedicated 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 clouds can land short of 2.5 km or past 5 km - once planes get inside the band, new salvos stop. AA range bonuses push the outer edge out; the 2.5 km inner edge does not move.

2.5-5 km

See the AA layers diagram ↓

Secondary Battery

Mounts10

Firing range5.0 km

Shell Grouping (σ)1

Total secondary fires/min (per side)

Sum of each gun family's fires/min (per side): 3.8 + 3 = 6.8. Per side: the barrels that bear on one broadside target (mounts × barrels / 2). A ceiling: assumes every shell hits and ignores the four-fire cap and Fire Prevention.

6.8

Secondary DPM (per side)

Sum across all secondary families of (per-side barrels × 60 / reload_s × alpha), with each reload counted in whole 1/7 s ticks (guns fire on the first tick after the reload), where per-side barrels = mounts × barrels-per-mount / 2 (the guns that bear on one broadside target). Per-family: 6×2 127 mm (6/side) × 60/7.571 s (7.5 s = 53 ticks) × 2100 = 99,849 + 4×3 155 mm (6/side) × 60/12 s × 2600 = 78,000. Assumes every shell hits (real hit rate is lower; the Brawl matchup tool on the Compare page folds in dispersion + target armor).

177,849

Secondary fire DPM vs T8 BB (per side)

Fires/min (per side) 6.8 × (1 − 0.4 fire resistance) × 60 s × 0.003 of max HP per second × 75,900 HP = 55,772. Per side: the barrels that bear on one broadside target (mounts × barrels / 2). A ceiling: assumes every shell hits and ignores the four-fire cap and Fire Prevention.

55,772

Total secondary DPM vs T8 BB (per side)

Secondary DPM (per side) 177,849 + secondary fire DPM 55,772 = 233,621: shell damage plus fire damage against one T8 battleship, every shell hitting.

233,621

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

Caliber127 mm

Reload time7.5 s

HE alpha2,100

Muzzle Velocity725 m/s

Fire Chance8%

Secondary fires/min (per side)

6×2 barrels / 2 sides × 60 / 7.571 s (7.5 s = 53 ticks) × 0.08 (8% fire chance) = 3.8. Per side: the barrels that bear on one broadside target (mounts × barrels / 2). A ceiling: assumes every shell hits and ignores the four-fire cap and Fire Prevention.

3.8

HE Pen21 mm

Show 1 more gun family

Caliber155 mm

Reload time12 s

HE alpha2,600

Muzzle Velocity925 m/s

Fire Chance10%

Secondary fires/min (per side)

4×3 barrels / 2 sides × 60 / 12 s × 0.1 (10% fire chance) = 3. Per side: the barrels that bear on one broadside target (mounts × barrels / 2). A ceiling: assumes every shell hits and ignores the four-fire cap and Fire Prevention.

HE Pen26 mm

Maneuverability

Engine power150,000 hp

Maximum speed27.0 kt

Turning circle radius900 m

Rudder shift time18.7 s

Engine power-boost threshold7.0 kt

Engine spool-up time23 s

Reverse spool-up time11.5 s

Reverse speed

top speed / 4 + 4.9 = 27 / 4 + 4.9 = 11.7 kt. Base value; speed modifiers scale it.

11.7 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.

47.9 s

Engine boost threshold (reverse)

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

8.1 kt

Acceleration 0-90%

Time to reach 90% of top speed (24.3 kt of 27.0 kt).

35.1 s

Acceleration 0-99%

Time to reach 99% of top speed (26.7 kt of 27.0 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.

56 s

Guns in a full turn

With the rudder hard over the hull turns 3.2°/s, so a target drifts across the bow at that rate. Turret traverse minus hull turn: 4 − 3.2 = +0.8°/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 (+0.8°/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): 16.07 km x 0.955 = 15.35 km. Camouflage does not change detectability by air.

16.07 km

With Grade IV camouflage (sea)

Detectability by sea 16.07 km x 0.955 (Grade IV permanent camo or any disposable camo) = 15.35 km.

15.35 km

Detectability by air12.86 km

Smoke firing penalty15.97 km

Detect when firing (sea)

max(main battery range, sea detectability 16.07 km) = 17.2 km. Equal to the ship's main battery range (never below base detectability): firing makes you visible to everyone you can reach.

17.2 km

Detect when firing (air)

Air detectability 12.86 km + gun-firing bloom 9.2 km = 22.06 km. The bloom tracks main-battery caliber 460 mm × 0.020 = 9.2 km.

22.06 km

Detect when on fire (sea)

Sea detectability 16.07 km + 2.0 km while burning = 18.07 km.

18.07 km

Detect when on fire (air)

Air detectability 12.86 km + 3.0 km while burning = 15.86 km.

15.86 km

Guaranteed Detect2 km

✦

Consumables

Damage Control Party∞ charges · 80 s reload · 8 s active

Repair Party2 charges · 80 s reload · 28 s active · 11,900 HP (14% of max HP) total heal (per charge)
ƒ
0.005 of max HP per second (0.5%) × 28 s effective active time = 0.14 of max HP × 85,000 HP = 11,900 HP: up to 14% of max HP restored per charge.
· 23,800 HP (28% of max HP) total heal (all charges)
ƒ
0.14 of max HP per charge × 2 charges = 0.28 × 85,000 HP = 23,800 HP: up to 28% of max HP if the whole Repair Party loadout is used.
· 425 HP/s (0.5% of max HP) heal per second
ƒ
0.005 (0.5% of max HP) × 85,000 HP = 425 HP/s. WoWS heals a flat percent of MAX HP each second, so this rate holds at any health level.

Choose one

Catapult Fighter4 charges · 80 s reload · 60 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

Observation Seaplane4 charges · 200 s reload · 30 s active · 1 squadron size · Tightens main-battery shell grouping

Enhanced Secondary Targeting3 charges · 160 s reload · 30 s active · +100% grouping · -50% dispersion

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 BB10% tighter H · 19% taller V

H = horizontal, V = vertical spread. This ship's curve against the standard battleship curve, both evaluated at this ship's max range (17.2 km) with the same model as Max Horiz/Vert Disp: horizontal 208 / 232 m − 1 = -10%, vertical 166 / 139 m − 1 = +19%. Shell grouping (σ) is separate: it sets how shells bunch toward the centre of this ellipse.

Shell scatter width @ 5 km120 m

(166.7 × (10 − 2.8) / 1000 + 2.8) × 30 = 120 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 km156 m

(333.3 × (10 − 2.8) / 1000 + 2.8) × 30 = 156 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 km192 m

(500 × (10 − 2.8) / 1000 + 2.8) × 30 = 192 m. Horizontal scatter at a fixed 15 km, from the same dispersion model - the long-range anchor. Only shown when the ship's guns reach 15 km.

Shell scatter height @ 5 km51.9 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,  $radiusOnDelim = 0.6$  at  $delim \cdot R_{m a x} = 0.5 \cdot 17198 = 8599$  m, and  $radiusOnMax = 0.8$  at 17198 m. Below the kink:  $k = 0.2 + (0.6 - 0.2) \cdot \frac{5000}{8599} = 0.4326$ , so  $σ_{V} = σ_{H} \cdot k = 120 \cdot 0.4326 = 51.9 m$ .

Shell scatter height @ 10 km98.7 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,  $radiusOnDelim = 0.6$  at  $delim \cdot R_{m a x} = 0.5 \cdot 17198 = 8599$  m, and  $radiusOnMax = 0.8$  at 17198 m. Above the kink:  $k = 0.6 + (0.8 - 0.6) \cdot \frac{10000 - 8599}{17198 - 8599} = 0.6326$ , so  $σ_{V} = σ_{H} \cdot k = 156 \cdot 0.6326 = 98.7 m$ .

Shell scatter height @ 15 km143.8 m

How tall the scatter ellipse is at a fixed 15 km, from the same model. Only shown when the ship's guns reach 15 km. 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,  $radiusOnDelim = 0.6$  at  $delim \cdot R_{m a x} = 0.5 \cdot 17198 = 8599$  m, and  $radiusOnMax = 0.8$  at 17198 m. Above the kink:  $k = 0.6 + (0.8 - 0.6) \cdot \frac{15000 - 8599}{17198 - 8599} = 0.7489$ , so  $σ_{V} = σ_{H} \cdot k = 192 \cdot 0.7489 = 143.8 m$ .

AP pen 5 km844 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 2831 \cdot 1460^{0.69} \cdot {0.46}^{- 1.07} \cdot {704.7}^{1.38} = 844 mm$ , where 704.7 m/s is the shell's speed when it arrives at 5 km (from 780 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 km738 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  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 2831 \cdot 1460^{0.69} \cdot {0.46}^{- 1.07} \cdot 639^{1.38} = 738 mm$ , where 639 m/s is the shell's speed when it arrives at 10 km (from 780 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 15 km651 mm

AP penetration at a fixed 15 km, from the same ballistic curve as AP Pen Close/Far: the shell's impact velocity at that range fed through the AP formula  $P = 10^{- 7} \cdot K \cdot m^{0.69} \cdot d^{- 1.07} \cdot v^{1.38}$   $= 10^{- 7} \cdot 2831 \cdot 1460^{0.69} \cdot {0.46}^{- 1.07} \cdot {583.9}^{1.38} = 651 mm$ , where 583.9 m/s is the shell's speed when it arrives at 15 km (from 780 m/s at the muzzle). Fixed anchors make ships directly comparable at the same fighting distance; the Charts card plots the full curve.

AP flight time @ 10 km5.15 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.292 \cdot {0.46}^{2}}{8 \cdot 1460} = 1.66 \times 10^{- 5}$ . That runs from a 780 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.

HE flight time @ 10 km5.54 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:  $k = \frac{π C_{d} d^{2}}{8 m} = \frac{π \cdot 0.543 \cdot {0.46}^{2}}{8 \cdot 1360} = 3.32 \times 10^{- 5}$ . That runs from a 805 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.

Improved HE PenYes

This ship's HE shells use a 1/4 (~0.25) caliber-to-pen ratio instead of the standard 1/6 (~0.167) - 0.25 in this case. Lets HE pen ~115mm armor instead of ~76mm. Hits every German cruiser (150mm CL, 203mm CA) and BB (350mm+), British heavy cruisers / Lion / Nelson, a handful of other premiums.

Guns per full salvo (alpha, DPM)9

3 mounts × 3 barrels = 9; all 9 bear on the broadside.

Model inputs

Krupp (AP)2,831

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 mass1,460 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 coefficient0.292

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

AP muzzle velocity780 m/s

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

HE muzzle velocity805 m/s

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

idealRadius10

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

minRadius2.8

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.

radiusOnDelim0.6

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

radiusOnMax0.8

Vertical scatter as a share of horizontal at maximum range.

delim0.5

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

AA defense

AA DPS at max range63

Only families that reach 5 km contribute at the outer edge of the AA bubble. In-game families: 13mm76 Type93 double 2x2 -> 15 DPS @ 1.2 km; 25mm Type96 Triple 1 8x3 -> 97 DPS @ 3.1 km; 25mm Type96 4x3 -> 49 DPS @ 3.1 km; 127mm40 Type89 Mod A 6x2 -> 63 DPS @ 5 km.

AA DPS layered by range63 DPS @ 5 km, 209 DPS @ 3.1 km, 224 DPS @ 1.2 km

@ 5 km: 63 from one family; @ 3.1 km: 97 + 49 + 63 = 209; @ 1.2 km: 15 + 97 + 49 + 63 = 224. 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-blank224

15 + 97 + 49 + 63 = 224 DPS: the sum of every family's average DPS, achievable only inside the closest-range family (1.2 km).

AA threat index786

15 × 1.2 + 97 × 3.1 + 49 × 3.1 + 63 × 5 = 786. 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 range3.1 km

Secondary battery firepower

Max HE alpha2600

max(2100 (127 mm), 2600 (155 mm)) = 2600. Maximum HE damage per shell across secondary HE families. Best on this ship: 2600 from the 155 mm family.

Max HE fire chance10%

max(8% (127 mm), 10% (155 mm)) = 10%. Maximum per-shell fire chance across secondary HE families (before target fire resistance is applied). Best on this ship: 10% from the 155 mm family.

Max HE pen26 mm

max(21 mm (127 mm), 26 mm (155 mm)) = 26 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: 26 mm from the 155 mm family.

Open in Charting Tool

Ship Charts

Background

A Yamato-class battleship - Yamato's only sister ship to be commissioned. Just like Yamato, Musashi was the biggest warship of World War II. Upon completion and contrasting her subsequently modernized sister ship, she had more powerful secondary battery guns but weaker AA defenses.

Armor Beta

Hull HP 85,000, distributed across 5 hull zones, each with its own plate thicknesses, saturation cap, and pen thresholds. HP caps are estimates.

Bow & stern32 mm

Overmatched by 7 AP guns here: Incomparable SE 25IncomparableYamato and 4 more. Angling still helps against the rest.

Belt / citadel410 mm

Citadels come from a flat broadside at close range; held past ~30° of angle, AP shatters or bounces.

Farming19 mm

Superstructure and extremities take HE pens and AP overpens from nearly any gun: steady chip damage. Fire resistance 40%, fires burn 60s. Range-by-range in the Compare tool →

Section	Plates	HP cap	Threats	Tactic
Bow	32 mm primary (range 32–350 mm)	≈ 4,250 (~5% of HP)	Overmatched by 460mm+ AP (Aki, Musashi)Angle bounces 410mm32 mm: HE pens from 203mm+	Bow-tank fits behind this exterior plate. Saturation is FAST here; the cap is often only a few thousand HP.
Hull (midship)	32 mm primary (range 18–350 mm)	≈ 63,750 (~75% of HP)	Overmatched by 460mm+ AP (Aki, Musashi)Angle bounces 410mm32 mm: HE pens from 203mm+	Largest HP pool. Citadel sits behind these plates; thinner deck and side plating absorb the rest.
Stern	32 mm primary (range 25–350 mm)	≈ 4,250 (~5% of HP)	Overmatched by 460mm+ AP (Aki, Musashi)Angle bounces 410mm32 mm: HE pens from 203mm+	Mirror of bow. Same fast saturation.
Citadel	410 mm primary (range 16–410 mm)	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	19 mm primary (range 19–500 mm)	no cap	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).

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 ARP Musashi 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.

2025-01-23 · Patch notes February Update: Legendary Pilgrimage Patch notes 2026-04-30 · Patch notes May Update: From Rome to Edo Patch notes 2026-10-01 · Patch notes Halloween Update: The Restless Fleet Patch notes

ARP Musashi

ARP Musashi Community Stats

ARP Musashi Community Stats

ARP Musashi Community Stats

Playstyle

Overview

Positioning

Potato Avoidance

Signature Traits →

How to get ARP Musashi

Best listed chance for this ship

Builds

Cohort position

Peers in this cohort

Stats & specs

Under the hood

Main battery formulas

Model inputs

AA defense

Secondary battery firepower

Ship Charts

Background

Armor Beta

Skins & permanent camouflages

Primary official WG sources

Signature Traits