Naval Base

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Building Network // Active: Naval Base
19 Structures // Scroll →
01 Arms Industry 02 Army Base 03 Air Base 04 Naval Base 05 Recruiting Office 06 Bunkers 07 Hospital 08 Secret Lab 09 Annex City 10 Combat Outpost 11 Mercenary Outpost 12 Local Industry 13 Field Hospital 14 Airfield 15 Pontoons 16 Military Logistics 17 Coastal Battery 18 Observation Station 19 Air Defense
[ Building Network ] // 04 Naval Base ▼
01 // Arms Industry ← 02 // Army Base ← 03 // Air Base ← 04 // Naval Base CURRENT 05 // Recruiting Office → 06 // Bunkers → 07 // Hospital → 08 // Secret Lab → 09 // Annex City → 10 // Combat Outpost → 11 // Mercenary Outpost → 12 // Local Industry → 13 // Field Hospital → 14 // Airfield → 15 // Pontoons → 16 // Military Logistics → 17 // Coastal Battery → 18 // Observation Station → 19 // Air Defense →
[ BUILDING DOSSIER // BLDG-A04 ] // MARITIME FORCE PROJECTION

NAVAL BASE

Maritime production and coastal deployment infrastructure. The supplied progression begins with a free homeland Harbor baseline, then advances through paid military Naval Base upgrades that reduce embarkation time, increase local resource yield and unlock progressively heavier naval assets.

← Buildings Database Open Upgrade Matrix ↓
Naval Base
Baseline Harbor
Free
Max Embarkation
-50% Time
Max Resource Yield
+20%
Shipyard Threshold
40% HP
[ OPERATIONAL BLUEPRINT ]
Maritime Network
Free Coastal Baseline
Friendly homeland coastal cities receive a free Level 1 Harbor baseline.
Embarkation Logistics
Listed embarkation time improves from -5% at the baseline Harbor to -50% at the top listed tier.
Fleet Projection
Higher infrastructure progressively unlocks heavier naval assets while also raising local resource yield.
[ PREREQUISITES MATRIX ]

Maritime Conditions

01
Homeland Harbor
Friendly homeland coastal cities receive the supplied Level 1 Harbor baseline for free.
02
Patrol Boat
The baseline Harbor can produce Patrol Boats when paired with Arms Industry Level 1.
03
Military Upgrades
Subsequent tiers are listed as active military construction upgrades rather than free baseline infrastructure.
04
40% HP Rule
Naval Base operations require at least 40% HP to remain operational.
[ NAVAL INFRASTRUCTURE CONFIGURATOR ]

Select Listed Infrastructure Tier

The source presents five listed rows: a free baseline Harbor followed by four paid Naval Base progression rows. Select any supplied row to update structural HP, embarkation modifier, resource yield, unlocks and costs.
[ ACTIVE MARITIME PROFILE ]
LEVEL 1 // BASELINE HARBOR
FREE // HOMELAND STANDARD // HP 5 // EMBARKATION -5% TIME // RESOURCE YIELD NO BONUS // UNLOCK PATROL BOAT* // DEPLOYMENT $0
FREE BASELINE
Structural HP
5
5 → 25 HP
Embarkation
-5%
Time modifier
Local Resource Yield
0%
Source: No Bonus
Build Time
FREE
Homeland standard
Money Cost
$0
Deployment
[ UPGRADE MATRIX ]

Harbor-To-Fleet Progression

Listed Level Source Label Build Time Structural HP Embarkation Resource Yield Unlocks Supplies Components Electronics Fuel Money
Level 1 Baseline Harbor Free // Homeland Standard 5 HP -5% Time No Bonus Patrol Boat* — — — — $0
Level 2 Naval Base Level 1 24:00:00 10 HP -10% Time +5% Corvette · Attack Submarine 500 1,000 500 1,000 $2,750
Level 3 Naval Base Level 2 09:00:00 15 HP -20% Time +10% Frigate · Destroyer · Ballistic Submarine 500 750 500 750 $2,000
Level 4 Naval Base Level 3 30:00:00 20 HP -40% Time +15% Cruiser 750 1,000 750 1,250 $3,500
Level 5 Naval Base Level 4/5 [Top Listed Tier] 32:00:00 25 HP -50% Time +20% Aircraft Carrier · Elite Submarine Hull Matrix 1,000 1,500 1,000 1,750 $5,500
[ NAVAL UNLOCK LADDER ]

Fleet Access by Supplied Tier

L1
Baseline Harbor
Patrol Boat*

*Requires Arms Industry Level 1.
L2
Naval Base Level 1
Corvette
Attack Submarine
L3
Naval Base Level 2
Frigate
Destroyer
Ballistic Submarine
L4
Naval Base Level 3
Cruiser
L5
Top Listed Tier
Aircraft Carrier
Elite Submarine Hull Matrix
[ MARITIME SCALING ]

Harbor-To-Fleet Network

Structural Scaling
Structural health rises 5 → 10 → 15 → 20 → 25 HP across the supplied rows.
Embarkation Scaling
Embarkation-time reduction progresses -5% → -10% → -20% → -40% → -50%.
Resource Scaling
The free Harbor lists No Bonus. Paid tiers then increase local resource yield +5% → +10% → +15% → +20%.
[ STRATEGIC INTELLIGENCE ]

Maritime Doctrine

Free Coastal Baseline
The source treats the Level 1 Harbor as a free homeland standard rather than a normal paid Naval Base upgrade.
Projection Scaling
Higher tiers simultaneously improve embarkation time, local resource output and access to heavier naval hulls.
40% HP Threshold
The source states that below 40% HP, ongoing ship construction freezes and capital hulls cannot be mobilized until the shipyard is repaired.
Data Separation // Harbor Baseline ≠ Paid Naval Upgrade
The supplied progression distinguishes the free homeland Harbor from later paid military infrastructure. Structural HP, embarkation-time reduction, local resource yield, hull unlocks, build time and deployment cost are kept as separate source values. The 40% HP operational rule is also independent of the listed infrastructure bonuses.
Source Note // Tier Naming & Hero Copy
The source terminal calls the maximum tier Level 5, while the final progression row itself is labeled “Level 5 // Naval Base Level 4/5 [Top Listed Tier]” . This replacement preserves that distinction instead of silently choosing whether the final military infrastructure should be called Naval Base Level 4 or Level 5. The original hero paragraph also contains the same unrelated single-tier crossing-infrastructure wording seen in earlier source pages; those statements are not used as Naval Base mechanics.
[ MARITIME ARCHITECTURE ]

Five Independent Layers

01
Harbor / Naval Tier
02
Structural HP
03
Embarkation Modifier
04
Resource / Hull Access
05
40% HP Operations
[ BUILDING NETWORK // NEXT DOSSIER ]
Recruiting Office
Naval Base maritime infrastructure is documented. Continue into manpower infrastructure with Recruiting Office.
Open Recruiting Office →