Naval (legacy)
All 32 Naval (legacy) research technologies from HOI4 v1.19 — real costs, years, prerequisites and unlocks mined from the game files.
| Tech | Cost | Year | Prerequisites | Leads to | Unlocks | Effects |
|---|---|---|---|---|---|---|
Battlecruiser Iearly_battlecruiser |
1.5 | 1922 | — | Battlecruiser II |
|
— |
Light Cruiser Iearly_light_cruiser Has a scripted effect on completion. |
1.5 | 1922 | — | Light Cruiser II |
|
— |
Early Carrier (Carrier I)early_carrier |
1.5 | 1922 | — | Basic Carrier (Carrier II) |
|
— |
Destroyer Iearly_destroyer |
1.5 | 1922 | — | Destroyer II |
|
— |
Submarine Iearly_submarine Has a scripted effect on completion. |
1.5 | 1922 | — | Submarine II |
|
— |
Transport Shiptransport |
1.5 | 1922 | — | Landing Craft, Multi-Product Supply Ship | — |
|
Battleship Iearly_battleship Has a scripted effect on completion. |
1.5 | 1922 | — | Battleship II |
|
— |
Heavy Cruiser Iearly_heavy_cruiser |
1.5 | 1922 | — | Basic Heavy Cruiser (Heavy Cruiser II) |
|
— |
Light Cruiser IIbasic_light_cruiser |
2 | 1936 | Light Cruiser I, Basic Heavy Cruiser (Heavy Cruiser II) | Light Cruiser III, Basic Heavy Cruiser (Heavy Cruiser II) |
|
— |
Basic Carrier (Carrier II)basic_carrier |
2 | 1936 | Early Carrier (Carrier I) | Carrier III |
|
— |
Destroyer IIbasic_destroyer |
2 | 1936 | Destroyer I | Improved Destroyer (Destroyer III) |
|
— |
Submarine II Gotterdammerungbasic_submarine Has a scripted effect on completion. |
2 | 1936 | Submarine I | Submarine III |
|
— |
Battleship IIbasic_battleship |
2 | 1936 | Battleship I | Battleship III, Super-Heavy Battleship II |
|
— |
Basic Heavy Cruiser (Heavy Cruiser II)basic_heavy_cruiser |
2 | 1936 | Light Cruiser II, Heavy Cruiser I | Heavy Cruiser III, Light Cruiser II |
|
— |
Multi-Product Supply Ship Gotterdammerungsp_multi_product_supply_ships |
2 | 1938 | Transport Ship, Transport Ship | Standardized Tensioned Replenishment Alongside Method | — |
|
Battlecruiser IIbasic_battlecruiser |
2 | 1940 | Battlecruiser I, Battleship III | Battleship III |
|
— |
Light Cruiser IIIimproved_light_cruiser |
2 | 1940 | Light Cruiser II, Heavy Cruiser III | Light Cruiser IV, Heavy Cruiser III |
|
— |
Carrier III Gotterdammerungimproved_carrier Has a scripted effect on completion. |
2 | 1940 | Basic Carrier (Carrier II) | Carrier IV |
|
— |
Improved Destroyer (Destroyer III)improved_destroyer |
2 | 1940 | Destroyer II | Destroyer IV |
|
— |
Submarine IIIimproved_submarine |
2 | 1940 | Submarine II | Submarine IV |
|
— |
Landing Craftlanding_craft |
2 | 1940 | Transport Ship | Advanced Landing Craft |
|
|
Battleship IIIimproved_battleship |
2 | 1940 | Battlecruiser II, Battleship II | Battleship IV, Battlecruiser II |
|
— |
Heavy Cruiser IIIimproved_heavy_cruiser |
2 | 1940 | Light Cruiser III, Basic Heavy Cruiser (Heavy Cruiser II) | Heavy Cruiser IV, Light Cruiser III |
|
— |
Standardized Tensioned Replenishment Alongside Methodsp_standard_tenshioned_replenishment_alongside_method |
2.5 | 1943 | Multi-Product Supply Ship | — | — |
|
Light Cruiser IVadvanced_light_cruiser |
2 | 1944 | Light Cruiser III, Heavy Cruiser IV | Heavy Cruiser IV |
|
— |
Carrier IV Gotterdammerungadvanced_carrier Has a scripted effect on completion. |
2 | 1944 | Carrier III | — |
|
— |
Destroyer IVadvanced_destroyer |
2 | 1944 | Improved Destroyer (Destroyer III) | — |
|
— |
Submarine IVadvanced_submarine |
2 | 1944 | Submarine III | — |
|
— |
Advanced Landing Crafttank_landing_craft |
2 | 1944 | Landing Craft | — | — |
|
Battleship IV Gotterdammerungadvanced_battleship Has a scripted effect on completion. |
2 | 1944 | Battleship III | — |
|
— |
Heavy Cruiser IVadvanced_heavy_cruiser |
2 | 1944 | Light Cruiser IV, Heavy Cruiser III | Light Cruiser IV |
|
— |
Super-Heavy Battleship IIheavy_battleship2 |
2 | 1944 | Battleship II | — |
|
— |