Modifier Type
Navy Maintenance Efficiency
This changes how much Ducats and Sailors is required to maintain a Ship.
Percentage · higher is better · Unit
 Burghers At high estate power | Estate | +50% | |
 Pirate Brethren Country modifier | Government Reform | +50% | |
| Union Investment in Military | Static Modifier | +50% | |
| Surge in Naval Expansion | Static Modifier | +33% | |
 End of the Shipbuilding Guilds | Advance | +25% | |
| Protector of the Anchorage Country modifier | Omen | +20% → +40% With Monarch power percentage in country (Military Ability): ×1 at 0% → ×2 at 100% Formula: Monarch power percentage in country (Military Ability) + 1 | |
| The Foam-Born Country modifier | Omen | +20% → +40% With Monarch power percentage in country (Administrative Ability): ×1 at 0% → ×2 at 100% Formula: Monarch power percentage in country (Administrative Ability) + 1 | |
 Agreements with the Sea Nomads | Advance | +15% | |
 Admiralty Regime Country modifier | Government Reform | +15% | |
| Naval Supply Contracts | Static Modifier | +15% | |
 The Piraeus Arsenal | Advance | +10% | |
 Cantabrian Fisheries | Advance | +10% | |
 College of the Admiralty | Advance | +10% | |
 The New Republic | Advance | +10% | |
 Grand Navy | Advance | +10% | |
 Shugo of Iyo | Advance | +10% | |
 The Sick and Hurt Board | Advance | +10% | |
 Venetian Arsenal On the country, when in its capital | Building | +10% | |
 Shipwright Contracts Country modifier | Estate Privilege | +10% | |
 Arsenal of the Realm Country modifier | Government Reform | +10% | |
 Navy Board Country modifier | Government Reform | +10% | |
 Dutch Shipbuilding Industry Country modifier | Government Reform | +10% | |
 Portuguese Monarchy Country modifier | Government Reform | +10% | |
 Fleet in Being Country modifier | Policy | +10% | |
| Grand Armada Country modifier | Policy | +10% | |
 Navy Audits Country modifier | Policy | +10% | |
 Royal Charters Country modifier | Policy | +10% | |
 Zemi Definition modifier | Religion | +10% | |
| Hegemon of the New World | Static Modifier | +10% | |
 Extortioner Modifier | Trait | +10% | |
| Naval Supply Contracts Modifier when in debate | Parliament Issue | +7% | |
| The Admiral's Administrative Ability | Static Modifier | +0.5% | |
 Letters of Marque Country modifier | Policy | −10% | |
| Repairing Decayed Ships | Static Modifier | −10% | |
 Admiralty Board Negative effects | Bureaucracy | −20% → 0% With Bureaucracy Maintenance: ×1 at 0% → ×0 at 100% Formula: 1 − Bureaucracy Maintenance |
color = good
percent = yes
game_data = {
category = unit
}