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Submarines Archive // Active Dossier: Attack Submarine

Submarines Network // 01 Of 03

01 Attack Submarine 02 Ballistic Missile Submarine 03 Submarine Officer

[ Submarines ] // 01 Attack Submarine ▼

01 // Attack Submarine CURRENT 02 // Ballistic Missile Submarine → 03 // Submarine Officer →

[ UNIT DOSSIER // SUB-01 ] // HUNTER-KILLER ATTACK SUBMARINE

ATTACK SUBMARINE

Stealth hunter-killer designed to find, pursue and destroy enemy submarines and surface ships. Its strongest environment is deep water, where every doctrine receives a +25% attack bonus. The platform combines stealth, submarine detection, improving engagement range, radar and sonar, plus cruise-missile launch capability. Shallow coastal water is the major weakness.

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Western Research

1 / 4 / 9 / 11 / 20 / 22

Eastern Research

1 / 4 / 9 / 11 / 20 / 22

European Research

1 / 4 / 9 / 11 / 20 / 22

Submarines

01 / 03 Live

Critical Terrain Rule // Avoid Shallow Water

Deep water is the Attack Submarine’s preferred environment: every doctrine receives +25% attack. In shallow water, the supplied hull progression shows only half of the deep-water HP. Western and European also suffer −25% attack and −25% defense, while Eastern reduces those combat penalties to −15% / −15%.

Primary Fight

Surface + Sub

Verified direct combat focus.

Deep Water

+25% ATK

Shared by all three doctrine variants.

Stealth Package

Stealth + Reveal

Stealth unit plus Reveal Stealth: Submarines.

Cruise Missile

12H Reload

L1 capacity 1 and L5 capacity 2 explicitly confirmed.

[ ATTACK SUBMARINE PROFILE CONFIGURATOR ]

Select Doctrine & Level

Doctrine selection changes surface/submarine combat, sensor reach and doctrine-specific economic or terrain advantages. The shared hull progression controls HP, movement, sight and engagement range.

Selected Research Day Day 1

Select Attack Submarine Level

[ ACTIVE HUNTER-KILLER PROFILE ]

Western // Level 1

Los Angeles-Class // Surface 8 // Sub 5 // Sensor 85

Level 1

Surface ATK / DEF

Doctrine-specific supplied value

Submarine ATK / DEF

Doctrine-specific supplied value

Radar / Sonar

Western doctrine has the extended sensor curve

Deep-Water HP

Shallow-water HP is half this value

Engagement Range

75 at L4; 100 at L6

[ DOCTRINE INTELLIGENCE ]

Three Hunter-Killer Profiles

[ DOC-W // WESTERN ATTACK SUBMARINE ]

Western Doctrine

Los Angeles → Seawolf → Virginia

Research days: 1 / 4 / 9 / 11 / 20 / 22. Doctrine advantage: +15% Radar and Sonar range, plus −10% research cost and time. Sensor curve is 85 early and 115 from L4.

[ DOC-E // EASTERN ATTACK SUBMARINE ]

Eastern Doctrine

Viktor → Akula → Yasen

Research days: 1 / 4 / 9 / 11 / 20 / 22. Doctrine advantage: +10% damage and reduced coastal combat penalties. Shallow-water combat penalties become −15% ATK / −15% DEF instead of −25% / −25%.

[ DOC-EU // EUROPEAN ATTACK SUBMARINE ]

European Doctrine

Swiftsure → Rubis → Astute

Research days: 1 / 4 / 9 / 11 / 20 / 22. Doctrine advantage: −10% mobilization cost and 50% upkeep. The supplied economy table shows the lowest verified production and upkeep burden of the three doctrine lines.

[ DOCTRINE RESEARCH TIMING ]

Shared Unlock Schedule

Level	Western	Eastern	European
L1	Day 1	Day 1	Day 1
L2	Day 4	Day 4	Day 4
L3	Day 9	Day 9	Day 9
L4	Day 11	Day 11	Day 11
L5	Day 20	Day 20	Day 20
L6	Day 22	Day 22	Day 22

[ SHARED HULL PROGRESSION ]

Deep vs Shallow Water

Level	HP Deep	HP Shallow	Deep SPD	Shallow SPD	Sight	Engagement Range
L1	20	10	3.5	1.75	25	50
L2	25	12.5	3.5	1.75	25	50
L3	25	12.5	3.5	1.75	25	50
L4	30	15	3.5	1.75	25	75
L5	30	15	3.5	1.75	25	75
L6	40	20	3.5	1.75	25	100

Terrain Rule // Hull HP and Combat Modifiers Are Separate

The supplied hull table explicitly shows shallow-water HP at half the deep-water value. Separately, deep water grants +25% attack. Western and European shallow-water combat modifiers are −25% ATK and −25% DEF, while Eastern reduces those penalties to −15% / −15%. HP changes and percentage combat modifiers must not be merged into one generic terrain penalty.

[ SURFACE / SUBMARINE COMBAT ]

Doctrine-Specific Damage Curve

Level	Western Surface	Western Sub	Eastern Surface	Eastern Sub	European Surface	European Sub
L1	8	5	8.8	5.5	8	5
L2	8.5	5.5	9.4	6.1	8.5	5.5
L3	9	6	9.9	6.6	9	6
L4	10	10	11	11	10	10
L5	10.5	10.5	11.6	11.6	10.5	10.5
L6	15	12	16.5	13.2	15	12

[ SENSOR PROGRESSION ]

Radar & Sonar

Level	Western Radar / Sonar	Eastern Radar / Sonar	European Radar / Sonar
L1	85	75	75
L2	85	75	75
L3	85	75	75
L4	115	100	100
L5	115	100	100
L6	115	100	100

Sensor Rule // Radar, Sonar & Reveal Remain Separate

Western’s sensor advantage applies to Radar and Sonar range. Reveal Stealth: Submarines is a separate detection property. Engagement range is also a separate combat value. Matching or similar numbers must not cause these mechanics to be merged in calculator logic.

[ CONFIRMED SPECIAL MECHANICS ]

Stealth / Detection / Missiles

Stealth Unit

Confirmed

While not engaged in combat, the unit is not visible where the supplied stealth property applies.

Reveal Stealth

Submarines

Confirmed to reveal submarines inside detection range.

Cruise Missile L1

Cap 1 / 12H

Explicit supplied popup value.

Cruise Missile L5

Cap 2 / 12H

No unsupported L2–L4 or L6 capacity values are inferred.

[ PRODUCTION PROGRESSION ]

Doctrine Economy

Level	Western / Eastern Costs	European Costs	Mobilization	Western / Eastern Upkeep	European Upkeep
L1	700 / 450 / 250 / 1250 / 1750	650 / 400 / 250 / 1150 / 1600	1 day	30 / 50 / 35 / 125	15 / 25 / 20 / 65
L2	700 / 450 / 250 / 1250 / 1750	650 / 400 / 250 / 1150 / 1600	1d 1h	35 / 60 / 40 / 140	20 / 30 / 20 / 70
L3	700 / 450 / 250 / 1250 / 1750	650 / 400 / 250 / 1150 / 1600	1d 2h	40 / 45 / 160	20 / 25 / 80
L4	800 / 675 / 500 / 1500 / 2250	700 / 600 / 450 / 1350 / 2050	1d 4h	50 / 55 / 180	25 / 30 / 90
L5	800 / 675 / 500 / 1500 / 2250	700 / 600 / 450 / 1350 / 2050	1d 5h	55 / 60 / 200	30 / 30 / 100
L6	950 / 900 / 750 / 1750 / 3000	850 / 800 / 700 / 1600 / 2700	1d 7h	65 / 70 / 220	35 / 35 / 110

Economy Rule // Preserve Supplied Sequences

The source provides ordered production-cost and upkeep sequences. Those positions are preserved exactly rather than being assigned unsupported resource labels. European doctrine is shown with its own lower cost and upkeep sequences; Western and Eastern share the supplied economy values displayed in the source.

[ UPGRADE INTELLIGENCE ]

Attack Submarine Breakpoints

Hunter-Killer Online

Stealth, submarine reveal, 50 engagement range and cruise-missile capacity 1 are already confirmed at entry level.

Range & Sensor Jump

Engagement range rises 50 → 75. Eastern/European sensors rise 75 → 100; Western rises 85 → 115.

Missile Capacity 2

Cruise-missile capacity 2 with 12h reload is explicitly confirmed. No intermediate capacity progression is invented.

Maximum Hunter Profile

Deep HP reaches 40, engagement range reaches 100, Western/European reach 15 surface / 12 submarine, while Eastern reaches 16.5 / 13.2.

Source Separation // No Double Doctrine Modifiers

Eastern’s displayed combat values already reflect the supplied +10% damage doctrine advantage and are used directly without adding another 10%. Western sensor values likewise already appear as 85 / 115 rather than the 75 / 100 base curve. European economy values are taken directly from the supplied European cost and upkeep columns. Deep-water and coastal modifiers remain separate terrain effects rather than being folded into these displayed base combat numbers.

[ SUBMARINES // 01 OF 03 ]

Next Dossier // Ballistic Missile Submarine

Attack Submarine covers the stealth hunter-killer role. Continue to SUB-02 for the strategic missile platform.

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