Ship Database
Tier VIII Submarine

United Kingdom

Sturdy

Unlike their prewar sisterships, the S-class submarines built during World War II stood out for their extensive use of welding in their construction, as well as their increased fuel capacity. An extra torpedo tube appeared in the light hull. HMS Sturdy was built at Birkenhead between 1942 and 1943. The ship spent most of the war in the Pacific, sinking more than 30 Japanese ships.

Credits
11,500,000
Official profile image of Sturdy

At a glance

The numbers that shape the ship

Hit points
12,000
Maximum speed
25.0 knots
Surface detection
6.1 km
Torpedo range
10.0 km
Torpedo reload
40 s

Combat envelope

Range and detection

Scale: 10 km

Every bar uses the same 10 km scale. Surface detection is a visibility threshold, not a weapon range.

  • Surface detection6.1 km
  • Secondary battery5 km
  • Torpedoes10 km
  • Sonar ping10 km

Damage comparison

Published maximum per hit

Ship-relative

Bars are normalized only against this ship's highest listed hit. They are not salvo damage, expected damage or DPM.

  • Torpedo · 533 mm Mk VIII Mod 0* 7,233
Handling, concealment and protectionOverview

Handling

Maximum speed
25.0 knots
Turning circle radius
360 m
Rudder shift time
5.0 s
Maneuverability API rating 44

Concealment

Surface detection
6.1 km
Air detection
2.2 km
Submarine detection
2.2 km
Concealment API rating 95

Survivability

Hit points
12,000
Torpedo damage reduction
0 %
Survivability API rating 24

Published armour thickness

Only positive values supplied by the API are shown.

Overall published range
16–25 mm
Weapons and payloadsArmament

Automatic armament

Secondary battery

Maximum range
5.0 km

Underwater armament

Torpedoes

Torpedoes API rating 12

533 mm Mk VIII Mod 0*

Maximum range
10.0 km
Maximum damage per hit
7,233
Reload time
40 s
Speed
75 knots
Detectability
1.7 km
Torpedo-tube layout
Mount
Torpedo Tubes: Bow Group
Mounts
6
Tubes each
1
Mount
Torpedo Tubes: Stern Group
Mounts
1
Tubes each
1
Submarine systemsClass system

Dive capacity

Maximum capacity
280.0
Consumption rate (API value)
1.0
Regeneration rate (API value)
0.6
Dive capacity API rating 37

Underwater handling

Maximum underwater speed
17 knots
Maximum dive/ascent speed
3.1 knots
Dive-plane shift time
11.8 s
Underwater maneuverability API rating 50

Sonar ping

Maximum range
10.0 km
Ping width (API value)
15
Ping velocity (API value)
500
Reload time (API value)
8.0
Single-sector duration (API value)
25
Double-sector duration (API value)
55
Sonar API rating 50
Modules, hull and progressionTechnical data

Default hull

Hull hit points
12,000
Secondary barrels
1
Torpedo tubes
7

Engine

Published maximum speed
25.0 knots

Module research tree

Names, research prices and defaults are reported directly by the API.

ASDIC 8 Mod. A

Default
Type
Sonar
Purchase
1,000,000 credits
Next modules
1

ASDIC 8 Mod. B

Type
Sonar
Research
18,000 XP
Purchase
2,000,000 credits

Sturdy (A)

Default
Type
Hull
Purchase
1,500,000 credits
Next modules
1

Sturdy (B)

Type
Hull
Research
27,000 XP
Purchase
3,000,000 credits
Next ships
1

533 mm Mk VIII

Default
Type
Torpedoes
Purchase
1,000,000 credits
Next modules
1

533 mm Mk VIII

Type
Torpedoes
Research
18,000 XP
Purchase
2,000,000 credits

Propulsion: 1,550 hp

Default
Type
Engine
Purchase
1,000,000 credits

Compatible upgrades

Official modernization descriptions and listed purchase prices. Effects still depend on the slot and configuration used in game.

Propulsion Modification 1

Modernization

Reduces time to full speed

Credits
1,000,000

Torpedo Tubes Modification 1

Modernization

Credits
500,000

Damage Control System Modification 3

Modernization

Credits
250,000

Main Armaments Modification 1

Modernization

Credits
125,000

Damage Control System Modification 2

Modernization

Credits
1,000,000

Torpedo Tubes Modification 3

Modernization

Credits
2,000,000

Next ships

Research costs published in this ship's official progression data.

Ship
Thrasher
Research cost
355,000 XP
Available module groups
10
Compatible upgrades
6
Researchable next ships
1
Upgrade slots
5
Published battle levels
8–10

Cross-nation comparison

Ships that fill a similar slot

Closest same-tier, same-class matches from other nations, ranked by published base statistics.

Italy

Pietro Micca

HP
14,600
Speed
26 kn
Guns
9.5 km
Torps
8.5 km
Open comparison

U.S.S.R.

L-20

HP
13,300
Speed
29 kn
Guns
6 km
Torps
9 km
Open comparison

Germany

U-190

HP
13,300
Speed
29 kn
Torps
12.5 km
Open comparison
All published source fields 152 values

Advanced reference for this saved default configuration. Field names follow Wargaming's source. An em dash replaces the source's −1 placeholder; it is not a negative measurement. These records do not include every mechanic in the game. Read the coverage guide.

Published fieldValue
ship_id4181112784
ship_id_strPBSS108
nameSturdy
typeSubmarine
nationuk
tier8
is_premiumNo
is_specialNo
has_demo_profileNo
price_credit11500000
price_gold0
mod_slots5
default_profile.armour.casemate.max—
default_profile.armour.casemate.min—
default_profile.armour.citadel.max—
default_profile.armour.citadel.min—
default_profile.armour.deck.max—
default_profile.armour.deck.min—
default_profile.armour.extremities.max—
default_profile.armour.extremities.min—
default_profile.armour.flood_damage0
default_profile.armour.health12000
default_profile.armour.range.max25
default_profile.armour.range.min16
default_profile.armour.total24
default_profile.atbas.distance5.0
default_profile.battle_level_range_max10
default_profile.battle_level_range_min8
default_profile.concealment.detect_distance_by_plane2.2
default_profile.concealment.detect_distance_by_ship6.1
default_profile.concealment.detect_distance_by_submarine2.2
default_profile.concealment.total95
default_profile.engine.engine_id3547181008
default_profile.engine.engine_id_strPBUE713
default_profile.engine.max_speed25.0
default_profile.hull.anti_aircraft_barrels0
default_profile.hull.artillery_barrels0
default_profile.hull.atba_barrels1
default_profile.hull.health12000
default_profile.hull.hull_id3539742672
default_profile.hull.hull_id_strPBUH720
default_profile.hull.range.max25
default_profile.hull.range.min16
default_profile.hull.torpedoes_barrels7
default_profile.mobility.max_speed25.0
default_profile.mobility.rudder_time5.0
default_profile.mobility.total44
default_profile.mobility.turning_radius360
default_profile.submarine_battery.consumption_rate1.0
default_profile.submarine_battery.max_capacity280.0
default_profile.submarine_battery.regen_rate0.6
default_profile.submarine_battery.total37
default_profile.submarine_mobility.buoyancy_rudder_time11.8
default_profile.submarine_mobility.max_buoyancy_speed3.1
default_profile.submarine_mobility.max_speed_under_water17
default_profile.submarine_mobility.total50
default_profile.submarine_sonar.submarine_sonar_id3559370704
default_profile.submarine_sonar.submarine_sonar_id_strPBUQ701
default_profile.submarine_sonar.total50
default_profile.submarine_sonar.wave_duration_025
default_profile.submarine_sonar.wave_duration_155
default_profile.submarine_sonar.wave_max_dist10.0
default_profile.submarine_sonar.wave_shot_delay8.0
default_profile.submarine_sonar.wave_speed_max500
default_profile.submarine_sonar.wave_width15
default_profile.torpedoes.distance10.0
default_profile.torpedoes.max_damage7233
default_profile.torpedoes.reload_time40
default_profile.torpedoes.slots.0.barrels1
default_profile.torpedoes.slots.0.caliber533
default_profile.torpedoes.slots.0.guns6
default_profile.torpedoes.slots.0.nameTorpedo Tubes: Bow Group
default_profile.torpedoes.slots.1.barrels1
default_profile.torpedoes.slots.1.caliber533
default_profile.torpedoes.slots.1.guns1
default_profile.torpedoes.slots.1.nameTorpedo Tubes: Stern Group
default_profile.torpedoes.torpedo_name533 mm Mk VIII Mod 0*
default_profile.torpedoes.torpedo_speed75
default_profile.torpedoes.torpedoes_id3550883792
default_profile.torpedoes.torpedoes_id_strPBUT709
default_profile.torpedoes.visibility_dist1.7
default_profile.weaponry.aircraft0
default_profile.weaponry.anti_aircraft0
default_profile.weaponry.artillery2
default_profile.weaponry.torpedoes12
modules.engine[0]3547181008
modules.hull[0]3539742672
modules.hull[1]3538694096
modules.sonar[0]3559370704
modules.sonar[1]3558322128
modules.torpedoes[0]3550883792
modules.torpedoes[1]3549835216
modules_tree.3538694096.is_defaultNo
modules_tree.3538694096.module_id3538694096
modules_tree.3538694096.module_id_strPBUH721
modules_tree.3538694096.nameSturdy (B)
modules_tree.3538694096.next_ships[0]4179015632
modules_tree.3538694096.price_credit3000000
modules_tree.3538694096.price_xp27000
modules_tree.3538694096.typeHull
modules_tree.3539742672.is_defaultYes
modules_tree.3539742672.module_id3539742672
modules_tree.3539742672.module_id_strPBUH720
modules_tree.3539742672.nameSturdy (A)
modules_tree.3539742672.next_modules[0]3538694096
modules_tree.3539742672.price_credit1500000
modules_tree.3539742672.price_xp0
modules_tree.3539742672.typeHull
modules_tree.3547181008.is_defaultYes
modules_tree.3547181008.module_id3547181008
modules_tree.3547181008.module_id_strPBUE713
modules_tree.3547181008.namePropulsion: 1,550 hp
modules_tree.3547181008.price_credit1000000
modules_tree.3547181008.price_xp0
modules_tree.3547181008.typeEngine
modules_tree.3549835216.is_defaultNo
modules_tree.3549835216.module_id3549835216
modules_tree.3549835216.module_id_strPBUT710
modules_tree.3549835216.name533 mm Mk VIII
modules_tree.3549835216.price_credit2000000
modules_tree.3549835216.price_xp18000
modules_tree.3549835216.typeTorpedoes
modules_tree.3550883792.is_defaultYes
modules_tree.3550883792.module_id3550883792
modules_tree.3550883792.module_id_strPBUT709
modules_tree.3550883792.name533 mm Mk VIII
modules_tree.3550883792.next_modules[0]3549835216
modules_tree.3550883792.price_credit1000000
modules_tree.3550883792.price_xp0
modules_tree.3550883792.typeTorpedoes
modules_tree.3558322128.is_defaultNo
modules_tree.3558322128.module_id3558322128
modules_tree.3558322128.module_id_strPBUQ702
modules_tree.3558322128.nameASDIC 8 Mod. B
modules_tree.3558322128.price_credit2000000
modules_tree.3558322128.price_xp18000
modules_tree.3558322128.typeSonar
modules_tree.3559370704.is_defaultYes
modules_tree.3559370704.module_id3559370704
modules_tree.3559370704.module_id_strPBUQ701
modules_tree.3559370704.nameASDIC 8 Mod. A
modules_tree.3559370704.next_modules[0]3558322128
modules_tree.3559370704.price_credit1000000
modules_tree.3559370704.price_xp0
modules_tree.3559370704.typeSonar
upgrades[0]4268937136
upgrades[1]4220702640
upgrades[2]4189245360
upgrades[3]4262645680
upgrades[4]4269985712
upgrades[5]4188196784
next_ships.4179015632355000

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