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

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.

United Kingdom

Sturdy

HP: 12,000
Speed: 25 kn
Torps: 10 km

Open comparison

Germany

U-190

HP: 13,300
Speed: 29 kn
Torps: 12.5 km

Open comparison

U.S.A.

Salmon

HP: 14,700
Speed: 33 kn
Torps: 11 km

Open comparison