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Submarine | Germany | Tier X
Tech Tree Position
Research price355000 exp
Purchase price28,000,000 Credits
Hit Points18,900 
Torpedo Tubes
533 mm6 х 1 pcs.
Rate of Fire0.87 shots/min.
Reload Time69 sec.
Rotation Speed12 deg./sec.
180 Degree Turn Time15 sec.
TorpedoG7e T4 mod. 0 
Maximum Damage8,633 
Torpedo Speed77 knot
Torpedo Range14.001 km.
Maximum Speed27 knot
Turning Circle Radius420 m.
Rudder Shift Time6.8 sec.
Surface Detectability Range5.57 km.
Air Detectability Range2.06 km.
Battle Levels

U-2501 — German Tier X submarine.

The first project for submarines designed specifically to stay most of the time underwater was Project XXI. They were equipped with improved batteries and a snorkel—a device that enabled the use of diesel engines for underwater movement. These submarines were also equipped with low-noise electric motors, allowing them to stealthily approach their targets. The lead submarine of the series, U-2501, did not participate in combat patrols and was sunk in Hamburg on May 3, 1945.


Hull Hit Points
Main Turrets
Secondary Gun Turrets
AA Mounts
Torpedo Tubes
Hangar Capacity
Research price
Purchase price
U-250118,9006256 03,000,000
Torpedoes Rate of Fire
Torpedo Tubes Reload Time
180° Turn Time
Maximum Damage
Torpedo Speed
Torpedo Range
Research price
Purchase price
G7e T4 mod. 0 and G7e T3 MZ0.969158,6337714 02,000,000
G7e T4 and G7e T4 MZ160158,6338214 38,0002,500,000
Sonar Rate of Fire
Torpedo Range
Research price
Purchase price
Engine Maximum Speed
Research price
Purchase price
Propulsion: 5,000 hp27 02,000,000

Compatible Upgrades

 Slot 1 
Main Armaments Modification 1
Damage Control Party Modification 1
Sonar Modification 1
 Slot 2 
Engine Room Protection
Sonar Modification 2
Damage Control System Modification 3
Reserve Battery Unit Modification 1
 Slot 3 
Torpedo Tubes Modification 1
Dive Capacity Modification 1
Submarine Surveillance Modification 1
 Slot 4 
Damage Control System Modification 2
Propulsion Modification 1
Submarine Steering Gears
 Slot 5 
Ship Consumables Modification 1
Torpedo Tubes Modification 3
Reinforced Bulkheads
 Slot 6 
Torpedo Tubes Modification 2
Dive Capacity Modification 2

Player Opinion



U-2501 is the tech tree Tier X U-boat for the German submarine branch. She is well equipped in terms of offense, having access to homing and conventional torpedoes, and also has access to Reserve Battery UnitWhen active, dive capacity does not deplete..


U-2501’s survivability is low, with an HP pool of 18,900. Her armor is nonexistent, with her entire exterior hull covered in 19mm. Players should be careful not to be spotted on the surface for extended periods of time, as she will suffer heavy damage.

U-2501’s maneuverability and concealment are very good at helping her survive in battle. Her turning circle and ruddershift are good, at 420 meters and 3.26 seconds respectively, which aids in dodging depth charges. Her concealment, at 5.6km, is very good for her tier (outspotting almost every destroyer in her matchmaking spread).

She has a mediocre 27 knot top speed on the surface. However, her underwater speed is fast for her tier, at 27 knots. While her speed is good, careful positioning is vital in order to not be stuck in bad situations where her speed will not bail her out. Her speed is not enough to outrun destroyers and her hull can be vulnerable to depth charges if the player is not careful.

U-2501’s Dive Capacity recharge and depletion rate are standard for her tier, at 1 unit/sec each. Her Dive Capacity reserve is high, at 308 units, allowing her to stay underwater for more than 5 minutes. Her time underwater can be extended with the Reserve Battery Unit consumable which stops the depletion of Dive Capacity for 30 seconds per consumable. This gives U-2501 an extra 90 units of dive capacity time.


U-2501’s sonar is a helpful tool for dealing effective damage. While the velocity is slow at 500 m/s, the 14km of range, and fast reload time of 6s is enough to double ping reliably. The double ping lasts 65 seconds which allows ample time for homing torpedoes to arrive.

Homing Torpedoes U-2501’s homing torpedoes allow for long range torpedo attacks. The homing torpedoes have best in tier range at 14km. They deal a respectable 8.6k damage, travel fast at 86 knots, and have a 35% chance of flooding. While her homing torpedoes are good at long range, their fast speed and short arming distance allow them to be used at close ranges against small and agile targets, especially when shotgunning. Shotgunning is the act of closing distance to a target (around 2-3km) and launching torpedoes at it, often heavily damaging or destroying low-health ships. Due to having 6 bow torpedo tubes, shotgun attacks with homing torpedoes can deal crippling damage to cruisers and outright destroy enemy destroyers with a maximum alpha strike of 51,600. Both homing and conventional torpedoes have the same reload time, 51 seconds.

Conventional Torpedoes

U-2501’s conventional torpedoes deal 14,300 per torpedo at the cost of a lower range (8km) and slower speed (65 knots). With 6 bow tubes, a full salvo can cause crippling damage or outright kill large/slow targets with a maximum alpha strike of 85,500. Her torpedoes have a good reload of 51 seconds and all reload at once. Due to having a longer arming distance and slower speed, conventional torpedoes should be used against slow or stationary targets.


U-2501 has a standard Damage Control PartyWhen activated, instantly repairs fires, floods, and incapacitations, and prevents more for the duration., with three stock charges and a short 5 second duration time. Players should be careful not to quickly exhaust their limited charges or will rapidly lose HP to flood and fire damage.

Her Hydrophone is useful for tracking the location of surface ships while underwater. It lasts 30 seconds, has an 8km range, and has an 80 second reload time

U-2501’s Submarine Surveillance is improved, with a much longer range of 9km. This aids her in detecting enemy submarines from further distances.

U-2501, as a German submarine, gets access to the Reserve Battery Unit.


U-2501 is a flexible submarine, as it can deal effective damage in any situation to any target. Players should use her speed and concealment to gain advantageous positions to either utilize her homing torpedoes from range or close the distance and “shotgun” targets. When pinging targets from range, it is important to utilize her ruddershift in order to dodge depth charges sent at the approximate locations of pings. Double pings will yield more hits, but exposes the submarine's approximate position from repeated pings. This playstyle can also yield less damage due to players using damage control on pings and dodging homing torpedoes by turning away. Once enemy ships are aware of a submarine's relative location, the submarine players' effectiveness shrinks, as the enemy ships will take evasive maneuvers to avoid taking massive torpedo damage. Due to how deadly ASW damage is at tier 10, it is advised to minimize being spotted or blind dropped by ASW planes.

When closing distances to shotgun targets, players should primarily approach battleships and cruisers. Once at around 6km, players should dive to periscope depth and further close distance. At around 2-3km, conventional torpedoes will arm and deal high damage to targets. Thus, players should quickly launch all torpedoes before proximity detection (2km) and dive quickly to avoid detection. Against maneuverable targets such as light cruisers and destroyers, homing torpedoes can be used as they have fast speed and lower arming distance. Players can also ping destroyers at close range as the homing shut off distance is short for destroyers (240m). U-2501 having all torpedoes on her bow makes shotgun attacks deadly, with most ships unable to survive the burst damage.

Against enemy submarines, her long range Submarine Surveillance consumable helps in spotting targets and her fast homing torpedoes can devastate unaware submarines.

U-2501 is a universal submarine, and her playstyle can be adapted to any game situation. While her characteristics do not particularly stand out, she does not have many weaknesses that prevent her from being effective in any situation. Her biggest strengths are her low concealment and access to the Reserve Battery Unit consumable, which can aid in staying underwater to evade detection during shotgun attacks or when escaping detection range. The combination of her good maneuverability characteristics and low detection aids in the shotgunning playstyle. Players can find success in both long range homing torpedo attacks and shotgunning targets at close ranges.


  • Long range homing torpedoes with fast sonar ping reload time
  • Conventional torpedoes have good damage
  • All torpedo tubes are on her bow
  • Good Dive Capacity reserve
  • Fast underwater speed
  • Good Concealment
  • Long range Submarine Surveillance
  • Access to the Reserve Battery Unit consumable


  • Low HP pool
  • Slow sonar ping velocity
  • Non existent armor
  • Mediocre surface speed


Unlike most Tier X ships, U-2501 has modules to research:

  1. Sonar: Upgrade to Typ 10 Mod. B for a faster sonar reload.
  2. Torpedoes: Upgrade to G7e T4 and G7e T4 MZ for faster torpedo reload, better speed on the homing torpedoes, and improved speed for the conventional torpedoes.

Optimal Configuration


The recommended upgrades are:

Commander Skills


U-2501 equips the following consumables:


Note: Use of the Juliet Charlie signal makes detonation impossible.


Historical Info

Historical Gallery


Ship Change Log

See here for links to Update notes.

  • First available for testing for all players from random bundles from Update 0.10.7 until Update 0.11.0.
  • Made available for testing again for all players in Update 0.11.2 from sequential combat missions until Update 0.11.9.

Testing Changes

  • DevBlog 181:
    • Adjusted maximum sonar ping and torpedo range from 10.9 to 11 km.
    • Adjusted detectability range:
      • By air and submarines: from 2.2 to 2.1 km.
      • When emitting a sonar ping in smoke: from 2 to 2.1 km.
      • Decreased dive capacity from 510 to 470 units.
    • Other changes:
      • Speed of torpedoes changing depth is now approximately 2.5x higher.
      • Detectability range after emitting a sonar ping now increases to a flat 4 km, rather than the detectability value of the submarine on the surface.
      • The width of the sonar ping and its impact radius has been increased 1.5x.
      • Speed of sonar ping emitted on the surface changed to 500 m/s.
      • Submarine Steering Gears Modification 2 added in upgrade slot 4.
      • Submarine Steering Gears Modification 3 added in upgrade slot 5.
  • DevBlog 188:
    • Changed the parameters of torpedoes:
      • Speed increased from 64 to 82 knots.
      • Detectability increased from 1.7 to 2.2 km.
      • Maximum damage increased from 5,800 to 7,700.
    • Changed the "Hydrophone" consumable:
      • Action time of the consumable increased from 45 to 60 s.
      • Detection of ships decreased from 8.5 to 7 km.
      • Detection of submarines decreased from 8.5 to 7 km.
  • Update 0.10.8:
    • Dive capacity depletion when the submarine is detected increased from 2 to 4 points per second.
    • Dive capacity restoration rate increased from 0.3 to 0.5 points per second.
    • Detectability range by sea after using the Sonar Ping decreased from 4 to 2 km.
    • The time it takes the torpedoes to arm increased from 0.5 to 2 s.
    • Reduced the detectability after using the Sonar Ping in smoke from 2.1 to 2 km.
    • Changed the Hydrophone consumable:
      • Consumable action time decreased from 60 to 40 s.
      • Consumable cooldown time decreased from 90 to 60 s.
      • Reduced ship bearing distance and spotting range when submerged from 7 to 6.5 km.
  • Update 0.10.9:
    • Dive Capacity depletion rate when spotted decreased from 4 to 3 units per second.
    • Torpedoes are now launched one by one.
    • The width of torpedo launch cone increased 2.5 times.
    • Changed the parameters of torpedoes and sonar ping:
      • Torpedo tubes reload time decreased from 85 to 77 s.
      • Maximum torpedo damage increased from 7,700 to 8,633.
      • Chance of causing flooding by a torpedo increased from 41 to 47%.
      • Torpedo and sonar ping range increased from 11 to 14 km.
  • Update 0.10.10:
    • Decreased maneuvering capabilities of homing torpedoes.
    • Distance in which homing torpedoes cease to home in on cruisers and destroyers increased twofold.
    • Added G7e/T4 MZ proximity fuse torpedoes with the following characteristics:
      • Reload time: 77 s.
      • Torpedo-type switching time: 5 s.
      • Range: 14 km.
      • Maximum damage: 12,033.
      • Speed: 82 knots.
    • The base visibility of surface ships at operating depth was decreased to 2 km.
    • Changes in the visibility of the submarine now occur at periscope and operating depth.
    • Fixed the model and textures of the ship.
  • Update 0.10.11:
    • The torpedo homing mechanics were updated.
    • The Hydrophone consumable starts with a 300 s cooldown at the beginning of a battle.
    • Added an underwater torpedo reticle.
  • DevBlog 255:
    • Increased HP from 13,400 to 18,900.
    • Increased the duration of the double-pinged sector from 25 to 75 s.
    • Decreased the maximum depth from 80 to 60 m. The concealment and visibility parameters were changed accordingly.
    • Can no longer be detected with the Surveillance Radar consumable at periscope depth.
    • Can now detect ships in smoke from the assured acquisition range from operating depth.
    • Ships in smoke can now detect the submarine at the operating depth from the assured acquisition range.
    • Fixed a bug causing the submarine to be affected by a 20-second detectability penalty after using a sonar ping.
    • Fixed a bug that caused ships' detectability to increase for the submarine after firing main battery guns while in smoke.
  • Update 0.11.0:
    • Removed from the live server.
  • Update 0.11.2:
    • Minor fixes to the geometry and textures of the ship.
  • Update (This lists the overall changes made to the submarine, including DevBlog 289 and DevBlog 293):
    • Readded to the live server.
    • Can now be detected by Hydroacoustic Search at maximum depth from 2 km.
    • Operating depth removed.
    • Emits oil slicks when hit at periscope or maximum depth.
    • Sonar pings emitted by the submarine are visible to enemy ships at a distance of 8 km.
    • Changed the Damage Control Party consumable:
      • Number of charges decreased from unlimited to 3.
      • Cooldown increased from 40 to 60 s.
      • Action time increased from 5 to 15 s.
    • Changed the Hydrophone consumable:
      • Number of charges increased from 3 to unlimited.
      • Interval between pings decreased to 6 s.
    • Changed the parameters of homing torpedoes:
      • Arming time set to 2 s.
      • Ascent time increased by approximately 2 times.
      • Reload time decreased from 77 to 60 s.
      • Flooding chance decreased from 47% to 35%.
    • Changed the parameters of conventional (proximity fuse) torpedoes:
      • Visibility decreased from 2.2 to 1.9 km.
      • Damage increased from 12,033 to 12,500.
      • Range decreased from 14 to 6.3 km.
      • Speed decreased from 82 to 62 knots.
      • Flooding chance increased from 70% to 73%.
    • Sonar reload time decreased from 8.3 to 6 s.
    • Decreased the duration of the double-pinged sector from 75 to 65 s.
    • Dive capacity decreased from 470 units to 280 units.
    • Dive capacity recharge rate increased from 0.5 to 1 units/s.
    • Dive capacity depletion rate when detected decreased from 3 to 1.3 units/s.
    • Flooding duration decreased from 40 to 30 s.
    • Flooding damage increased from 0.20% to 0.33% HP/sec.
  • Update 0.11.3:
    • Damage Control Party action time decreased from 15 to 5 s.
  • Update 0.11.4:
    • Disabled the possibility to launch conventional torpedoes at maximum depth.
    • Disabled the increased dive capacity depletion rate when the submarine is detected by the enemy.
    • Replaced ping movement effect with ping launch effect when undetected, displayed within a range of 1 km from the submarine and lasting 5 seconds.
    • The characteristics and capabilities at periscope depth are now maintained while staying at that depth and right until the submarine has reached her maximum depth.
    • The border separating the periscope and maximum depths now lies at 15 m.
    • Maximum depth values were changed to 30 and 60 m.
  • DevBlog 329:
    • Added dispersion when launching torpedoes:
      • 16 ° for bow tubes.
  • DevBlog 332:
    • Changed the dispersion when launching torpedoes:
      • For bow tubes - reduced from 16 ° to 5 °.
  • Update 0.11.5:
    • Replaced the rotation of torpedo launchers with torpedo turning mechanics.
    • Fixed a bug that caused the submarine at the start of each new battle to select a torpedo type that was different from the last selected type in the previous battle.
    • Fixed a bug that prevented the submarine's torpedo reticles from turning to follow the sonar.
  • DevBlog 338:
    • Dive Capacity recovery rate reduced from 1 to 0.8 units/s.
    • Changes to speed and turning circle radius:
      • Surface speed: from 26 to 27 knots.
      • Underwater speed: from 31 to 27 knots.
      • Turning circle radius: from 540 to 480 meters.
  • DevBlog 348:
    • Removed the Hydrophone consumable.
    • Added the Echo-Ranging Set consumable with the following settings:
      • Action time: 30 s.
      • Reload time: 80 s.
      • Interval between pings: 6 s.
      • Ship bearing effect duration: 4 s.
      • Ship bearing distance: 8 km.
      • Number of charges: Unlimited.
    • Added the Low-Frequency Hydrophone consumable with the following settings:
      • Action time: 60 s.
      • Reload time: 120 s.
      • Submarines' spotting range: 9 km.
      • Number of charges: Unlimited.
      • Preparation time: 360 s.
  • Update 0.11.7:
    • Renamed the Echo-Ranging Set consumable to the Hydrophone consumable.
    • Renamed the Low-Frequency Hydrophone consumable to the Submarine Surveillance consumable.
    • Disabled guaranteed detection for the submarine in the submerged position.
    • The visual effects above the submarine when using sonar is now also displayed for the submarine herself.
  • Update 0.11.8:
    • Added a visual distinction between the effect of acoustic homing torpedoes and regular ones.
    • Fixed a bug that caused Credits to be deducted for resupplying only a part of the submarine's ammunition.
    • Fixed a bug that caused tooltips to overlap the screen with the composition of teams when playing the submarine.
  • DevBlog 370:
    • With the release of Update 0.11.9:
      • Preparation time for the Submarine Surveillance consumable reduced from 360 to 330 s.
  • Update 0.11.9:
    • Readded the ping movement effect.
    • Added a special indicator to notify players when there is little diving capacity remaining.
    • Updated the set of sound effects for torpedo launching.
    • Updated the icon for acoustic homing torpedoes.
  • Introduced to the game as a researchable ship in Update 0.11.10.
  • Update 13.1:
    • Turning circle radius reduced from 480 to 420 m.
  • Update 13.2:
    • Torpedoes now do 10% of maximum damage up to 2.9 km, and then scale to 100% damage from 2.9 to 3 km.
    • Stock homing torpedoes changed:
      • Arming distance reduced from 414 to 21 m.
    • Researchable homing torpedoes changed:
      • Arming distance reduced from 440 to 22 m.
    • Stock conventional torpedoes changed:
      • Maximum damage increased from 12,500 to 14,300.
      • Arming distance reduced from 951 to 16 m.
      • Range increased from 6.3 to 7.5 km.
    • Researchable conventional torpedoes changed:
      • Maximum damage increased from 12,500 to 14,300.
      • Arming distance reduced from 999 to 17 m.
      • Range increased from 6.3 to 8 km.

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