U.K. · Tier VI Submarine

Undine

Verified build

U.K. submarine: homing torpedo attacks from depth

21

Submarine Commander Skills — verified — 20 skills

Recommended role

U.K. submarine: homing torpedo attacks from depth

Undine · Tier 6 Submarine · Balanced playstyle

Points used21/21
Use these skills now
  1. 1

    Liquidator

    1 ptEssential5 out of 5

    One point for more flooding on every torpedo hit.

    In game: +30% flooding chance (multiplicative) from your torpedo hits. · Unlocked from 1 total points.

  2. 2

    Last Stand

    2 ptsEssential5 out of 5

    Keeps you manoeuvring with damaged engine or diving planes — vital when escaping.

    In game: The engine and steering gears remain partially operational while incapacitated, so you keep moving and steering. · Unlocked from 3 total points.

  3. 3

    Preventive Maintenance

    2 ptsEssential5 out of 5

    Protects the same fragile modules Last Stand covers.

    In game: -30% risk of module incapacitation. · Unlocked from 5 total points.

  4. 4

    Sonarman

    3 ptsEssential5 out of 5

    Longer ping duration gives more time to line up a homing salvo.

    In game: +25% duration of a once-highlighted ping sector; -15% duration of a twice-highlighted ping sector. · Unlocked from 8 total points.

  5. 5

    Adrenaline Rush

    4 ptsRecommended4 out of 5

    Faster torpedo and sonar reload as your health drops.

    In game: For each 1% of HP lost: -0.25% torpedo reload, -0.25% Sonar reload, -0.25% secondary battery reload and -0.25% main battery reload. · Unlocked from 12 total points.

  6. 6

    Torpedo Aiming Master

    4 ptsRecommended4 out of 5

    More damage on double-pinged sections — the main damage skill.

    In game: +15% homing torpedo damage against a twice-highlighted sonar-ping sector. · Unlocked from 16 total points.

  7. 7

    Improved Battery Efficiency

    4 ptsRecommended4 out of 5

    Faster dive-capacity recharge, so you can stay hidden more often.

    In game: While dive capacity is below 50%: +25% dive capacity recharge rate on the surface. · Unlocked from 20 total points.

  8. 8

    Helmsman

    1 ptRecommended4 out of 5

    Sharper handling right after a Hydrophone use, which is when you reposition.

    In game: For 15 s after using the Hydrophone: -10% rudder shift time and -10% diving plane shift time. · Unlocked from 21 total points.

Recommended Upgrades

Class-based recommendation

  1. Slot 1

    Sonar Modification 1

    Protects the sonar used to guide homing torpedoes.

  2. Slot 2

    Sonar Modification 2

    Supports quicker target acquisition when pinging.

  3. Slot 3

    Dive Capacity Modification 1

    Recharges dive capacity faster for more underwater time.

  4. Slot 4

    Submarine Steering Gears

    Improves underwater handling when repositioning or escaping.

Next recommended skill

Build complete — every recommended skill is already unlocked at 21 points.

Why this build?
  • This is a no-reset path: every skill taken earlier is still in the final 21-point build, so you never pay to redistribute points.
  • Ping quality and torpedo damage are the submarine's whole damage model.
  • Battery efficiency and Last Stand are what let you escape after the attack.
  • Points are only spent when the next skill in the plan is fully affordable — intermediate points are banked rather than wasted.
How to play this ship
  • Approach at maximum depth, come up to periscope depth only to ping, then dive again.
  • Ping twice on the same section before firing: single pings do far less damage.
  • Stay away from destroyers and ships with depth charges until they are busy with someone else.
  • Watch your battery: surfacing next to an enemy with an empty battery ends the game for you.
Sources

Skill data: Skill names, point costs and effects taken from the current World of Warships Wiki commander skill list (last edited 11 Aug 2026). The submarine tree is structurally different: 20 skills, 5 per point-cost row.

Build: Curated beginner-safe no-reset progression built only from this app's verified class skill catalog (current World of Warships PC sources). Ship role reflects the ship's well-known in-game character; no numeric ship statistics are claimed. Not an official Wargaming build.

Avoid / low priority skills

Enlarged Propeller Shaft

4 ptsOptional2 out of 5

Optional: surface speed does nothing at maximum depth.

Watchful

3 ptsOptional2 out of 5

Optional: extra awareness, but it competes with survival skills.

Full skill table for Undine

Submarine Commander Skills — 20 skills, 5 per row

Laid out like the in-game tree for this class. Each row is one point cost.

1 pt
  • Enhanced SonarSituational3 out of 5
  • LiquidatorEssential5 out of 5
  • HelmsmanRecommended4 out of 5
  • Priority TargetSituational3 out of 5
  • Incoming Fire AlertRecommended4 out of 5
2 pts
  • Improved Battery CapacitySituational3 out of 5
  • Torpedo Crew TrainingSituational3 out of 5
  • Consumables EnhancementsSituational3 out of 5
  • Preventive MaintenanceEssential5 out of 5
  • Last StandEssential5 out of 5
3 pts
  • Enhanced Impulse GeneratorSituational3 out of 5
  • SonarmanEssential5 out of 5
  • Consumables SpecialistSituational3 out of 5
  • WatchfulOptional2 out of 5
  • SuperintendentSituational3 out of 5
4 pts
  • Adrenaline RushRecommended4 out of 5
  • Torpedo Aiming MasterRecommended4 out of 5
  • Sonarman ExpertSituational3 out of 5
  • Improved Battery EfficiencyRecommended4 out of 5
  • Enlarged Propeller ShaftOptional2 out of 5

Showing 20 of 20 submarine commander skills , rated for Undine.

  • Liquidator

    1 pt
    Essential5 out of 5

    +30% flooding chance (multiplicative) from your torpedo hits.

    One point for more flooding on every torpedo hit.

  • Preventive Maintenance

    2 pts
    Essential5 out of 5

    -30% risk of module incapacitation.

    Does not apply to secondary or AA batteries.

    Protects the same fragile modules Last Stand covers.

  • Last Stand

    2 pts
    Essential5 out of 5

    The engine and steering gears remain partially operational while incapacitated, so you keep moving and steering.

    Keeps you manoeuvring with damaged engine or diving planes — vital when escaping.

  • Sonarman

    3 pts
    Essential5 out of 5

    +25% duration of a once-highlighted ping sector; -15% duration of a twice-highlighted ping sector.

    Longer ping duration gives more time to line up a homing salvo.

  • Helmsman

    1 pt
    Recommended4 out of 5

    For 15 s after using the Hydrophone: -10% rudder shift time and -10% diving plane shift time.

    Sharper handling right after a Hydrophone use, which is when you reposition.

  • Incoming Fire Alert

    1 pt
    Recommended4 out of 5

    Warns you about a main battery salvo fired at your ship from more than 4.5 km away.

    A cheap final point: warning when long-range shells are on the way.

  • Adrenaline Rush

    4 pts
    Recommended4 out of 5

    For each 1% of HP lost: -0.25% torpedo reload, -0.25% Sonar reload, -0.25% secondary battery reload and -0.25% main battery reload.

    Faster torpedo and sonar reload as your health drops.

  • Torpedo Aiming Master

    4 pts
    Recommended4 out of 5

    +15% homing torpedo damage against a twice-highlighted sonar-ping sector.

    Only works with homing (acoustic) torpedoes.

    More damage on double-pinged sections — the main damage skill.

  • Improved Battery Efficiency

    4 pts
    Recommended4 out of 5

    While dive capacity is below 50%: +25% dive capacity recharge rate on the surface.

    Faster dive-capacity recharge, so you can stay hidden more often.

  • Enhanced Sonar

    1 pt
    Situational3 out of 5

    While your submarine is detected: -10% Sonar reload time.

    Situational: only works while you are detected.

  • Priority Target

    1 pt
    Situational3 out of 5

    Shows the number of opponents currently aiming their main battery at your submarine.

    No ship-specific note yet.

  • Improved Battery Capacity

    2 pts
    Situational3 out of 5

    +10% dive capacity; -20% dive capacity recharge rate while on the surface.

    No ship-specific note yet.

  • Torpedo Crew Training

    2 pts
    Situational3 out of 5

    While your submarine is detected: -15% torpedo tube reload time.

    Situational: detection-gated reload bonus.

  • Consumables Enhancements

    2 pts
    Situational3 out of 5

    +5% action time of your ship's consumables.

    No ship-specific note yet.

  • Enhanced Impulse Generator

    3 pts
    Situational3 out of 5

    While dive capacity is below 33%: +15% sonar ping velocity.

    No ship-specific note yet.

  • Consumables Specialist

    3 pts
    Situational3 out of 5

    -15% preparation (reload) time of your ship's consumables.

    No ship-specific note yet.

  • Superintendent

    3 pts
    Situational3 out of 5

    +1 charge to all mounted consumables.

    Situational: an extra consumable charge.

  • Sonarman Expert

    4 pts
    Situational3 out of 5

    If a sector was highlighted within 30 s of using the Hydrophone: +25% ping-effect duration on both once- and twice-highlighted sectors.

    Situational: strong for a Hydrophone-heavy playstyle.

  • Watchful

    3 pts
    Optional2 out of 5

    Displays an “in detection range” warning when your otherwise-undetected submarine is inside active Submarine Surveillance, Surveillance Radar or Hydroacoustic Search detection range.

    Detection range depends on your current depth under the standard depth rules.

    Optional: extra awareness, but it competes with survival skills.

  • Enlarged Propeller Shaft

    4 pts
    Optional2 out of 5

    While dive capacity is below 50%: +18% speed at the surface and at periscope depth.

    Does not work at maximum depth.

    Optional: surface speed does nothing at maximum depth.