Tier XSubmarine italy

ItalyEliteCommonGlobal

Pietro Calvi

WoWS World of Warships Italy Submarine · Tier X

Main Battery: 120 mm/45 Model 1931 on a single mount; 2 turrets × 1 barrels; Range 10.5 km
Torpedoes: Torpedo Tubes: Bow Group; 4 launchers × 1 tubes; Range 9 km
Torpedoes: Torpedo Tubes: Stern Group; 4 launchers × 1 tubes; Range 9 km

Pietro Calvi Win Rate & Combat Stats

Sample of 453.6K players · as of 2026-08-06

BattlesWin rateAvg damage

EUBattles 811

811811

Win rate

50.41%

Low sample

Avg damage

37,635

Low sample

NABattles 752

752752

Win rate

50.61%

Low sample

Avg damage

36,507

Low sample

Averages from our own crawled player sample, not official server-wide data. The sample skews toward active clan players, so its overall win rate runs about 1 point above the true server average. Battle counts are career totals and include games played before this ship’s past balance changes.

Survivability

Hit Points18,800

#10 of 13

Group avg 20,615

Main Belt Armor25 mm

Bow / Stern Armor19 mm

Ship Length84.3 m

Ship Width7.7 m

Main Battery

Main Guns2 × 1

Caliber120 mm

Firing Range10.5 km

#2 of 8

Group avg 8.6 km

Reload Time5.0 s

Rotation Time7.2 s

Max Dispersion51 m

Sigma2.00

Shell Types

SAP Shell

Damage2,600

Shell Velocity730 m/s

Overmatch Threshold8.4 mm

Ricochet Angle60° / 75°

Normalization45°

Fuse Threshold25 mm

Air Drag0.2215

Flight Time7.58 s

DPM62,400

#4 of 8

Group avg 56,014

Torpedoes

533 mm

Torpedo Tubes8

Speed60 knots

Range9.0 km

#11 of 13

Group avg 11.4 km

Damage12,033

#5 of 13

Group avg 12,197

Alpha Damage32,800

Splash Damage1,100

Flood Chance70%

Detectability1.40 km

Reload Time77.0 s

#13 of 13

Group avg 56.5 s

180° Rotation15.0 s

Arming Time0.1 s

Resurface Distance13.33 m

Spread Angle3° / 3°

Torpedo Caliber533 mm

Tube Module HP1,200

Loaders2

Fuse Depth0.14 m

Maneuverability

Max Speed29.0 knots

#8 of 13

Group avg 29.2 knots

Turning Radius460 m

#4 of 13

Group avg 495 m

Rudder Shift Time6.7 s

Engine Power4,400 hp

Displacement2,060 t

Power-to-Weight2.14 hp/t

Submarine Maneuverability

Max Speed (Periscope)29.0 knots

Max Speed (Deep)16.0 knots

#8 of 13

Group avg 19.9 knots

Surface/Dive Speed4.0 m/s

Horizontal Rudder Shift Time23.74 s

Battery Capacity160 s

#11 of 13

Group avg 235 s

Battery Recharge Rate1.50 /s

Concealment

Max Surface Detection5.94 km

#8 of 13

Group avg 6.05 km

Min Surface Detection5.35 km

Air Detection2.13 km

Submarine Detection2.13 km

Detectability Firing in Smoke2.19 km

Combat Instructions

Torpedo Reload and Power Plant Forcing

Duration60 s

Charge Required50

Charge Decay1/s (30s)

Charge Method

Hit an enemy ship with a main battery shell+20

Activation effect

Torpedo tube reload time-20%

Ship speed+15%

Consumables

Slot 1

Damage Control Party

Extinguishes fires, removes instances of flooding, and repairs damaged modules. Prevents enemy acoustic torpedoes from homing.

Reload60 s

Duration5 s

Charges3

Slot 2

Submarine Surveillance

Detects submarines at maximum and periscope depths.

Reload120 s

Duration60 s

Charges∞

Radar Range9.0 km

Slot 3

Main Battery Reload Booster

Reduces main battery gun reload time.

Reload100 s

Duration30 s

Charges4

Reload Coeff.×0.3

Slot 4

Smoke Generator

Generates a smoke screen that reduces the risk of being detected by the enemy.

Reload80 s

Duration40 s

Charges5

Smoke Duration10 s

Slot 5

Repair Party

Partially restores the ship's HP by repairing any light damage.

Reload80 s

Duration40 s

Charges2

Heal Rate0.5%/s

Battle Instructions

Torpedo Reload and Power Plant Forcing

Duration60 s

Charge Required50

Charge Decay1/s (30s)

Hit an enemy ship with a main battery shell+20

Torpedo tube reload time-20%

Ship speed+15%

Pietro Calvi Change History

15.4Test shipsDev Blog 2026-05-14 ↗
Main Battery parameters changed · HE shells replaced with SAP with the following parameters
- Maximum damage - 2,600
- Armor penetration capacity - 34mm
- Initial velocity - 730 m/s
Main Battery parameters changed
- Shell ballistics changed. Arcs will now be flatter
- Buffmaximum standard torpedo damage10,800 → 12,033
- Buffalternative torpedo maximum damage16,400 → 19,900
- Buffcombat instructions bonus to torpedo tubes reload time15 → 20 %
15.3Test shipsDev Blog 2026-04-01 ↗
The ship has received a Combat Instruction with the following characteristics
- The Combat Instruction is activated automatically upon reaching maximum progress
- duration60 s
- Time before you start losing progress: 30.0 s. Progress loss per second: -50.0 %
The ship has received a Combat Instruction with the following characteristics · Progress conditions
- hit an enemy ship with a main battery shell20 %
The ship has received a Combat Instruction with the following characteristics · Activation Effects
- Torpedo launcher reload time -15%
- Ship Maximum Speed +15%

See all version changes →

Modules

120 mm/45 Model 1931 on a single mount

Main Battery

Rate of Fire:10.9

Max HE Damage:1,800

Rotation Time:7.2s

533 mm Si 270

Torpedoes

Range:0 km

Max Damage:10,800

Reload Time:0.8 knots

Torpedo Speed:60 knots

533 mm Si 270 M

Torpedoes

Range:0 km

Max Damage:10,800

Reload Time:0.9 knots

Torpedo Speed:65 knots

Calvi

Hull

AA Guns:0

Main Guns:2

Secondary Guns:0

HP:18,800

Range:6-19

Torpedo Tubes:8

Propulsion: 4,400 hp

Engine

Max Speed:29 knots

Mk10 mod. 1

Sonar

Wave Duration 0:35s

Wave Duration 1:75s

Max Distance:10

Wave Shot Delay:20s

Max Speed:550 knots

Wave Width:18

Mk10 mod. 2

Sonar

Wave Duration 0:35s

Wave Duration 1:75s

Max Distance:10

Wave Shot Delay:15s

Max Speed:550 knots

Wave Width:18

Upgrades

Slot 1

Sonar Modification 1

Risk of sonar becoming incapacitated: -25%

Sonar repair time: -25%

Main Armaments Modification 1

Risk of main battery becoming incapacitated: -20%

Main battery survivability: +50%

Main battery repair time: -20%

Risk of torpedo tubes becoming incapacitated: -20%

Torpedo tubes survivability: +50%

Torpedo tubes repair time: -20%

Damage Control Party Modification 1

Consumable action time: +40%

Slot 2

Damage Control System Modification 3

Damage taken from fires: -5%

Damage taken from flooding: -5%

Sonar Modification 2

Sonar ping velocity: +10%

Engine Room Protection

Risk of steering gears becoming incapacitated: -20%

Steering gears repair time: -20%

Risk of engine becoming incapacitated: -20%

Engine repair time: -20%

Slot 3

Dive Capacity Modification 1

Dive Capacity Recharge Rate per Second: +10%

Torpedo Tubes Modification 1

Risk of torpedo tubes becoming incapacitated: -40%

Torpedo tubes traverse speed: +20%

Torpedo speed: +5%

Aiming Systems Modification 1

Maximum main battery shell dispersion: -7%

Maximum secondary battery shell dispersion: -5%

Secondary battery firing range: +5%

Torpedo tubes traverse speed: +20%

Main Battery Modification 2

Main battery traverse speed: +15%

Submarine Surveillance Modification 1

Submarine Surveillance preparation and cooldown time: -20%

Smoke Generator Modification 1

Smoke Curtain Generator consumable action time: +20%

Smoke Generator consumable action time: +20%

Slot 4

Submarine Steering Gears

Rudder shift time: -50%

Dive plane reset time: -50%

Diving plane shift time: -50%

Propulsion Modification 1

Maximum reverse speed at full power: +140%

Time to reach full engine power when decelerating: -50%

Maximum forward speed at full power: +140%

Time to reach full engine power when accelerating: -50%

Damage Control System Modification 2

Fire extinguishing time: -15%

Flooding recovery time: -15%

Slot 5

Reinforced Bulkheads

Damage taken from depth charges: -15%

Torpedo Tubes Modification 3

Torpedo damage: +7%

Ship Consumables Modification 1

Ship consumable action time: +10%

Slot 6

Dive Capacity Modification 2

Dive Capacity: +15%

Gun Fire Control System Modification 2

Main battery firing range: +16%

Torpedo Tubes Modification 2

Risk of torpedo tubes becoming incapacitated: +50%

Torpedo tube reload time: -15%

Main Battery Modification 3

Main battery traverse speed: -13%

Main battery reload time: -12%

More:All Tier X ships All Submarines Italy ships

Pietro Calvi

Specifications

Pietro Calvi Win Rate & Combat Stats

Survivability

Main Battery

Torpedoes

Maneuverability

Submarine Maneuverability

Concealment

Combat Instructions

Consumables

Pietro Calvi Change History

Ballistics

Armor Model

Overview

Modules

120 mm/45 Model 1931 on a single mount

Main Battery

533 mm Si 270

Torpedoes

533 mm Si 270 M

Torpedoes

Calvi

Hull

Propulsion: 4,400 hp

Engine

Mk10 mod. 1

Sonar

Mk10 mod. 2

Sonar

Upgrades

Slot 1

Sonar Modification 1

Main Armaments Modification 1

Damage Control Party Modification 1

Slot 2

Damage Control System Modification 3

Sonar Modification 2

Engine Room Protection

Slot 3

Dive Capacity Modification 1

Torpedo Tubes Modification 1

Aiming Systems Modification 1

Main Battery Modification 2

Submarine Surveillance Modification 1

Smoke Generator Modification 1

Slot 4

Submarine Steering Gears

Propulsion Modification 1

Damage Control System Modification 2

Slot 5

Reinforced Bulkheads

Torpedo Tubes Modification 3

Ship Consumables Modification 1

Slot 6

Dive Capacity Modification 2

Gun Fire Control System Modification 2

Torpedo Tubes Modification 2

Main Battery Modification 3

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