Undine

13.9

Undine

Submarine | U.K. | Tier VI

Tech Tree Position

stock

 top

General

Research price40000 exp

Purchase price4,500,000

Hit Points9,200

Secondary Armament #1

76 mm/45 20cwt QF HA Mk.I on a CPV mount1 х 1 pcs.

Firing Range4 km.

Rate of Fire12 shots/min.

Reload Time5 sec.

Torpedo Tubes

533 mm6 х 1 pcs.

Rate of Fire1.33 shots/min.

Reload Time45 sec.

Rotation Speed12 deg./sec.

180 Degree Turn Time15 sec.

Torpedo533 mm Mk VIII Mod 0

Maximum Damage5,933

Torpedo Speed75 knot

Torpedo Range9 km.

Maneuverability

Maximum Speed20 knot

Turning Circle Radius320 m.

Rudder Shift Time5.9 sec.

Concealment

Surface Detectability Range5.53 km.

Air Detectability Range1.98 km.

Battle Levels

12345678910

13.9

Undine

Submarine | U.K. | Tier VI

Tech Tree Position

stock

 top

General

Research price40000 exp

Purchase price4,500,000

Hit Points9,600

Secondary Armament #1

76 mm/45 20cwt QF HA Mk.I on a CPV mount1 х 1 pcs.

Firing Range4 km.

Rate of Fire12 shots/min.

Reload Time5 sec.

Torpedo Tubes

533 mm6 х 1 pcs.

Rate of Fire1.33 shots/min.

Reload Time45 sec.

Rotation Speed12 deg./sec.

180 Degree Turn Time15 sec.

TorpedoIDS_PBPT035_533MM_MKVII_MOD0_SUB

Maximum Damage6,533

Torpedo Speed75 knot

Torpedo Range9.999 km.

Maneuverability

Maximum Speed20 knot

Turning Circle Radius320 m.

Rudder Shift Time5.9 sec.

Concealment

Surface Detectability Range5.53 km.

Air Detectability Range1.98 km.

Battle Levels

12345678910

VI

4,500,000

Undine — British Tier VI submarine.

U-class submarines were conceived as unarmed targets for anti-submarine training, but after the project had been approved, a decision was made to arm them with torpedoes. The fore-end was redesigned to accommodate six torpedo tubes. The submarines relied on electric motors to move, and they used diesel engines as generators. When World War II broke out, Undine participated in missions as part of the 6th Submarine Flotilla. On January 7, 1940, she was sunk by German auxiliary minesweepers.

Modules

	Hit Points (HP)	Armor (mm)	Armor (mm)	Main Turrets (pcs.)	Secondary Gun Turrets (pcs.)	AA Mounts (pcs.)	Torpedo Tubes (pcs.)	Hangar Capacity (pcs.)		Research price (exp)	Purchase price ()
Undine (A)	9,200	16	25		1		6			0	400,000
Undine (B)	9,600	16	25		1		6			12,000	1,050,000

	Rate of Fire (shots/min)	Torpedo Tubes Reload Time (sec)	180° Turn Time (sec)	Maximum Damage (HP)	Torpedo Speed (knot)	Torpedo Range (km)		Research price (exp)	Purchase price ()
533 mm Mk VIII	1.3	45	15	5,933	75	9		0	350,000
533 mm Mk VIII	1.3	45	15	6,533	75	10		8,000	700,000

	Rate of Fire (m/s)	Torpedo Range (km)		Research price (exp)	Purchase price ()

	Maximum Speed (knot)		Research price (exp)	Purchase price ()
Propulsion: 825 hp	20		0	350,000

Compatible Upgrades

Slot 1
Slot 2
Slot 3
Slot 4

Player Opinion

Performance

Warning: The data presented in the AA Defense sidebar section may be incorrect.
Refer to the in-game Port screens for more useful data.

Pros:

Cons:

• Only front-mounted torpedo tubes

Research

Availability of researchable upgrades for Undine is as follows:

1. Hull (B): For about 5% more health.
2. Sonar: Upgrade to ASDIC 6 Mod. B for a faster sonar reload.
3. Torpedoes: Upgrade to 533 mm Mk VIII for better homing torpedo damage, range and flooding chance.

Optimal Configuration

Upgrades

The recommended upgrades are:

• Slot 1:
• Slot 2:
• Slot 3:
• Slot 4:

Commander Skills

Recommended Commander Skills
Cost (points)	Attack			Defense
1	Enhanced Sonar -10% to sonar reload time when the boat is detected by an enemy.	Liquidator +30% chance of a torpedo strike causing flooding.	Helmsman Within 15 seconds of using the Hydrophone consumable: -10% to the shift times of the rudder and dive planes.	Priority Target The detection indicator additionally shows the number of opponents that are currently aiming at you with their main battery guns.	Incoming Fire Alert A warning about a salvo fired at your ship from a distance of more than 4.5 km.
2	Improved Battery Capacity +10% to the total Dive Capacity -20% Dive Capacity Recharge Rate per second.	Torpedo Crew Training -15% torpedo tubes reload time while detected by an enemy.	Consumables Enhancements +5% to the action time of the boat's consumables.	Preventive Maintenance -30% to the risk of the main turrets [sic], torpedo tubes, steering gear, or engine becoming incapacitated.	Last Stand The boat remains partially able to sustain speed and maneuverability with the engine and steering gears incapacitated.
3	Enhanced Impulse Generator If less than 33% of the maximum dive capacity remains: +15% sonar ping velocity.	Sonarman +25% to the duration of a ping effect on a sector highlighted once. -15% to the duration of a ping effect on a sector highlighted twice.	Consumables Specialist -15% to the preparation and reload time of the boat's consumables.	Watchful If undetected, displays an indicator showing that the boat is within range of activated enemy Hydroacoustic Search, Surveillance Radar, or Submarine Surveillance consumables. If you change depth while the indicator is displayed, you may be detected..	Superintendent +1 charge to all consumables.
4	Adrenaline Rush For every 1% of HP lost,   –0.25% to each of: * Main battery reload time * Sonar cooldown time * Torpedo tube reload time * Airstrike armament reload time * Secondary battery reload time.	Torpedo Aiming Master When launching homing torpedoes at a ship with a sector that is highlighted twice, torpedo damage is increased. The sector highlighted twice needs to remain active until the torpedoes hit the ship. +15% to torpedo damage.	Sonarman Expert When a sector is highlighted within 30 seconds of using the Hydrophone consumable: +25% to ping effect duration.	Improved Battery Efficiency If less than 50% of the maximum dive capacity remains: +25% Dive Capacity Recharge Rate per second.	Enlarged Propeller Shaft While less than 50% of the maximum dive capacity remains: +18% to the boat's speed on the surface and at periscope depth.
Key: ★★★ - Extremely Useful      ★★ - Frequently Useful      ★ - Occasionally Useful     No stars - Not Useful

Consumables

Undine equips the following consumables:

• Slot 1: Damage Control Party  – 3 charges
• Slot 2: Hydrophone  – 4 charges
• Slot 3: Submarine Surveillance 

Signals

Recommended Signal Flags
Combat
Juliet Charlie -100% to the risk of magazine detonation.	Juliet Yankee Bissotwo -20% to flooding duration.	India Yankee -20% to fire duration.	Hotel Yankee -20% to damage received when ramming the enemy. +50% to damage dealt when ramming the enemy.	Victor Lima +1% chance for HE bombs and shells with a caliber above 160mm causing a fire. +0.5% chance for bombs and smaller shells causing a fire. +4% chance of torpedoes causing flooding.	India X-Ray +1% chance for HE bombs and shells with a caliber above 160mm causing a fire. +0.5% chance for bombs and smaller shells causing a fire. +5% to the risk of your ship's magazine detonating.
Juliet Whiskey Unaone +15% chance of causing flooding. +5% to the risk of your ship's magazine detonating.	Mike Yankee Soxisix +5% to secondary battery maximum firing range. -5% to maximum dispersion of secondary battery shells. -5% to secondary battery loading time.	November Echo Setteseven +5% continuous AA damage at all ranges. +5% damage from flak bursts.	Sierra Mike +5% to the ship's maximum speed.	November Foxtrot -5% reload time on all consumables.	India Delta +20% to the amount of HP recovered when Repair Party  is used.
X-Ray Papa Unaone +10% action time of a Smoke Generator .	Sierra Bravo +10% action time of Hydroacoustic Search  -10% reload time of Defensive AA Fire .

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

Gallery

Historical Info

Undine, 19??

Construction

Builder:

Laid down:

Launched:

Commissioned:

---

Specifications

? tons displacement, standard

?m length

?m beam

?m draft (mean)

---

Machinery

12 boilers, 3 turbines [e.g.]

---

Performance

? knots at ? shaft horsepower

?nm range at ? knots

---

Armor

Main belt: ?mm

Torpedo bulkhead: ?mm

Decks: ?mm main, ?mm upper deck

Turrets: ?mm

Conning tower: ?mm

---

Armament

Main

? (?x?) ?mm rifles

Secondary

? (?x?) ?mm dual purpose? rifles

Anti-Aircraft

? (?x?) ?mm guns

Torpedoes

? (?x?) ?mm torpedo tubes

---

Aircraft

Three (3) ? float planes, one catapult

Historical Gallery

References

Ship Change Log

See here for links to Update notes.

• Available for testing by supertesters in the game starting from Update 0.11.9.

Testing Changes

• DevBlog 368:
  • Preliminary characteristics.
    • Note: The Dev Blog states Undine's Dive Capacity recharge rate is 1 units/s, she actually recharges 0.6 units/s.
• DevBlog 370:
  • With the release of Update 0.11.9:
    • Preparation time for the Submarine Surveillance consumable reduced from 360 to 330 s.
• DevBlog 379:
  • Stock torpedoes changed:
    • Range increased from 7 to 9 km.
    • Maximum damage increased from 4,630 to 5,700.
    • Chance to cause flooding reduced from 77 to 29%.
  • Researchable torpedoes changed:
    • Range increased from 8 to 10 km.
    • Maximum damage increased from 4,630 tо 6,267.
    • Chance to cause flooding reduced from 77 to 32%.
• DevBlog 409:
  • Fixed a bug with the maximum sonar range of the submarine: now it is equal to the homing torpedo range.
    • Maximum sonar range increased from 8 to 10 km.

• Update 12.1:
  • Available from sequential bundle #2 of the British Submarines Early Access event (for British Tokens).
• Introduced into the game as a researchable ship in Update 12.3.
• Update 13.1:
  • Turning circle radius reduced from 410 to 320 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 torpedoes changed:
    • Maximum damage increased from 5,700 to 5,933.
    • Arming distance reduced from 302 to 20 m.
  • Researchable torpedoes changed:
    • Maximum damage increased from 6,267 to 6,533.
    • Arming distance reduced from 302 to 20 m.

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