Ship Database
Tier VIII Submarine

U.S.S.R.

L-20

The last group of L-class minelaying submarines (XIII-38 series). The boats' torpedo armament consisted of eight tubes—six in the bow, two in the stern. Five of the six submarines were commissioned, two of which were lost during World War II. The lead boat of the series was sunk during nuclear weapons tests in 1957.

Credits
11,500,000
Official profile image of L-20

At a glance

The numbers that shape the ship

Hit points
13,300
Maximum speed
29.0 knots
Surface detection
6.2 km
Main battery range
6.0 km
Main battery reload
5.0 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 detection6.2 km
  • Main battery6 km
  • Torpedoes9 km
  • Sonar ping9 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 · SAT-38U 4,600
Handling, concealment and protectionOverview

Handling

Maximum speed
29.0 knots
Turning circle radius
460 m
Rudder shift time
8.1 s
Maneuverability API rating 50

Concealment

Surface detection
6.2 km
Air detection
2.2 km
Submarine detection
2.2 km
Concealment API rating 94

Survivability

Hit points
13,300
Torpedo damage reduction
0 %
Survivability API rating 25

Published armour thickness

Only positive values supplied by the API are shown.

Overall published range
6–25 mm
Weapons and payloadsArmament

Surface armament

Main battery

Artillery API rating 15
Maximum range
6.0 km
Reload time
5.0 s
Rate of fire
12.0 rounds/min
180° turn time
18.0 s
Maximum dispersion
36 m
Gun layout
Mount
100 mm/51 B-24PL Model 1936
Mounts
1
Barrels each
1

Automatic armament

Secondary battery

Underwater armament

Torpedoes

Torpedoes API rating 28

SAT-38U

Maximum range
9.0 km
Maximum damage per hit
4,600
Reload time
41 s
Speed
68 knots
Detectability
1.7 km
Torpedo-tube layout
Mount
Torpedo Tubes: Bow Group
Mounts
6
Tubes each
1
Mount
Torpedo Tubes: Stern Group
Mounts
2
Tubes each
1
Submarine systemsClass system

Dive capacity

Maximum capacity
210.0
Consumption rate (API value)
1.0
Regeneration rate (API value)
1.5
Dive capacity API rating 25

Underwater handling

Maximum underwater speed
14 knots
Maximum dive/ascent speed
2.4 knots
Dive-plane shift time
14.6 s
Underwater maneuverability API rating 34

Sonar ping

Maximum range
9.0 km
Ping width (API value)
15
Ping velocity (API value)
800
Reload time (API value)
17.5
Single-sector duration (API value)
25
Double-sector duration (API value)
55
Sonar API rating 45
Modules, hull and progressionTechnical data

Default hull

Hull hit points
13,300
Main-battery barrels
1
Torpedo tubes
8

Engine

Published maximum speed
29.0 knots

Module research tree

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

HAS 8 mod. 1

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

HAS 8 mod. 2

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

Propulsion: 4,000 hp

Default
Type
Engine
Purchase
1,000,000 credits

100 mm/51 B-24PL Model 1936

Default
Type
Artillery
Purchase
500,000 credits

L-20 (A)

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

L-20 (B)

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

533 mm

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

533 mm

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

Aiming Systems Modification 1

Modernization

Credits
500,000

Damage Control System Modification 2

Modernization

Credits
1,000,000

Main Battery Modification 2

Modernization

Credits
500,000

Torpedo Tubes Modification 3

Modernization

Credits
2,000,000

Next ships

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

Ship
K-1
Research cost
355,000 XP
Available module groups
10
Compatible upgrades
8
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

Japan

I-56

HP
24,200
Speed
29 kn
Guns
8.5 km
Torps
6 km
Open comparison

United Kingdom

Sturdy

HP
12,000
Speed
25 kn
Torps
10 km
Open comparison
All published source fields 172 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_id4181112272
ship_id_strPRSS108
nameL-20
typeSubmarine
nationussr
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.health13300
default_profile.armour.range.max25
default_profile.armour.range.min6
default_profile.armour.total25
default_profile.artillery.artillery_id3548360144
default_profile.artillery.artillery_id_strPRUA712
default_profile.artillery.distance6.0
default_profile.artillery.gun_rate12.0
default_profile.artillery.max_dispersion36
default_profile.artillery.rotation_time18.0
default_profile.artillery.shot_delay5.0
default_profile.artillery.slots.0.barrels1
default_profile.artillery.slots.0.guns1
default_profile.artillery.slots.0.name100 mm/51 B-24PL Model 1936
default_profile.atbas.distance0.0
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_ship6.2
default_profile.concealment.detect_distance_by_submarine2.2
default_profile.concealment.total94
default_profile.engine.engine_id3552423376
default_profile.engine.engine_id_strPRUE708
default_profile.engine.max_speed29.0
default_profile.hull.anti_aircraft_barrels0
default_profile.hull.artillery_barrels1
default_profile.hull.atba_barrels0
default_profile.hull.health13300
default_profile.hull.hull_id3547082192
default_profile.hull.hull_id_strPRUH713
default_profile.hull.range.max25
default_profile.hull.range.min6
default_profile.hull.torpedoes_barrels8
default_profile.mobility.max_speed29.0
default_profile.mobility.rudder_time8.1
default_profile.mobility.total50
default_profile.mobility.turning_radius460
default_profile.submarine_battery.consumption_rate1.0
default_profile.submarine_battery.max_capacity210.0
default_profile.submarine_battery.regen_rate1.5
default_profile.submarine_battery.total25
default_profile.submarine_mobility.buoyancy_rudder_time14.6
default_profile.submarine_mobility.max_buoyancy_speed2.4
default_profile.submarine_mobility.max_speed_under_water14
default_profile.submarine_mobility.total34
default_profile.submarine_sonar.submarine_sonar_id3558321616
default_profile.submarine_sonar.submarine_sonar_id_strPRUQ702
default_profile.submarine_sonar.total45
default_profile.submarine_sonar.wave_duration_025
default_profile.submarine_sonar.wave_duration_155
default_profile.submarine_sonar.wave_max_dist9.0
default_profile.submarine_sonar.wave_shot_delay17.5
default_profile.submarine_sonar.wave_speed_max800
default_profile.submarine_sonar.wave_width15
default_profile.torpedoes.distance9.0
default_profile.torpedoes.max_damage4600
default_profile.torpedoes.reload_time41
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.guns2
default_profile.torpedoes.slots.1.nameTorpedo Tubes: Stern Group
default_profile.torpedoes.torpedo_nameSAT-38U
default_profile.torpedoes.torpedo_speed68
default_profile.torpedoes.torpedoes_id3556126160
default_profile.torpedoes.torpedoes_id_strPRUT704
default_profile.torpedoes.visibility_dist1.7
default_profile.weaponry.aircraft0
default_profile.weaponry.anti_aircraft0
default_profile.weaponry.artillery15
default_profile.weaponry.torpedoes28
modules.artillery[0]3548360144
modules.engine[0]3552423376
modules.hull[0]3547082192
modules.hull[1]3533450704
modules.sonar[0]3558321616
modules.sonar[1]3557273040
modules.torpedoes[0]3556126160
modules.torpedoes[1]3551931856
modules_tree.3533450704.is_defaultNo
modules_tree.3533450704.module_id3533450704
modules_tree.3533450704.module_id_strPRUH726
modules_tree.3533450704.nameL-20 (B)
modules_tree.3533450704.next_ships[0]4179015120
modules_tree.3533450704.price_credit3000000
modules_tree.3533450704.price_xp27000
modules_tree.3533450704.typeHull
modules_tree.3547082192.is_defaultYes
modules_tree.3547082192.module_id3547082192
modules_tree.3547082192.module_id_strPRUH713
modules_tree.3547082192.nameL-20 (A)
modules_tree.3547082192.next_modules[0]3533450704
modules_tree.3547082192.price_credit1000000
modules_tree.3547082192.price_xp0
modules_tree.3547082192.typeHull
modules_tree.3548360144.is_defaultYes
modules_tree.3548360144.module_id3548360144
modules_tree.3548360144.module_id_strPRUA712
modules_tree.3548360144.name100 mm/51 B-24PL Model 1936
modules_tree.3548360144.price_credit500000
modules_tree.3548360144.price_xp0
modules_tree.3548360144.typeArtillery
modules_tree.3551931856.is_defaultNo
modules_tree.3551931856.module_id3551931856
modules_tree.3551931856.module_id_strPRUT708
modules_tree.3551931856.name533 mm
modules_tree.3551931856.price_credit2000000
modules_tree.3551931856.price_xp18000
modules_tree.3551931856.typeTorpedoes
modules_tree.3552423376.is_defaultYes
modules_tree.3552423376.module_id3552423376
modules_tree.3552423376.module_id_strPRUE708
modules_tree.3552423376.namePropulsion: 4,000 hp
modules_tree.3552423376.price_credit1000000
modules_tree.3552423376.price_xp0
modules_tree.3552423376.typeEngine
modules_tree.3556126160.is_defaultYes
modules_tree.3556126160.module_id3556126160
modules_tree.3556126160.module_id_strPRUT704
modules_tree.3556126160.name533 mm
modules_tree.3556126160.next_modules[0]3551931856
modules_tree.3556126160.price_credit1000000
modules_tree.3556126160.price_xp0
modules_tree.3556126160.typeTorpedoes
modules_tree.3557273040.is_defaultNo
modules_tree.3557273040.module_id3557273040
modules_tree.3557273040.module_id_strPRUQ703
modules_tree.3557273040.nameHAS 8 mod. 2
modules_tree.3557273040.price_credit2000000
modules_tree.3557273040.price_xp18000
modules_tree.3557273040.typeSonar
modules_tree.3558321616.is_defaultYes
modules_tree.3558321616.module_id3558321616
modules_tree.3558321616.module_id_strPRUQ702
modules_tree.3558321616.nameHAS 8 mod. 1
modules_tree.3558321616.next_modules[0]3557273040
modules_tree.3558321616.price_credit1000000
modules_tree.3558321616.price_xp0
modules_tree.3558321616.typeSonar
upgrades[0]4268937136
upgrades[1]4220702640
upgrades[2]4189245360
upgrades[3]4262645680
upgrades[4]4259499952
upgrades[5]4269985712
upgrades[6]4287811504
upgrades[7]4188196784
next_ships.4179015120355000

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