• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.

unmerged(881)

Colonel
Feb 8, 2001
1.175
0
Visit site
How to read the diagrams

  • Each diagram lists the research fields required for research of the item.
  • Each diagram lists the specific theories and applications required for research of the item.
  • Some diagrams have warnings about the effects of certain research choices so be mindful of them before making your selection.

Points to keep in mind
  • The diagram threads use the same ID numbering system as State Machine's Technology Charts and Analysis pages and (of course) the Hearts of Iron tech database.
  • Many research items have the effect of deactivating other research choices e.g. research of an Improved Medium Tank with a 40mm+ Tank Gun automatically deactivates the 20mm+ and 30mm+ research options.
  • The diagrams list only the specific components needed for research. Be mindful of the fact that many of these components might require that multiple sub-components of their own be researched before your research goals can continue.
  • The diagrams are listed in platform groups e.g. all Light Tanks are listed together to aid in searching... at least how I would search if I was looking for something. :D
  • My use of colors, specifically blue, indicates only the required prerequisites that are part of the research progression (e.g. the 40mm+ requires successful research of the 30mm+ tank gun) and are components of a given diagram item.
  • Your research choices could very well result in an item I have marked green being listed as [color=FF9933]in the process of being researched[/color] or already successfully researched.
 
Marines

Required research fields:

Naval Research

Required components

Level 2 Theory:
Amphibious Warfare

Level 2 Application:
Naval Infantry Training


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Last edited:
Basic Destroyer

Required research fields:

Naval Research
Artillery Research

Required components

Level 1 Theory:
Basic Warship Design

Level 0 Applications:
Naval Gun 120mm+
Basic Destroyer Hull


Level 1 Application:
Basic Destroyer Propulsion


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Improved Destroyer

Required research fields:

Naval Research
Artillery Research

Required components

Level 6 Theory:
Improved ASW and Convoy Escorts

Level 0 Applications:
Naval Gun 120mm+


Level 6 Applications:
Improved Destroyer Propulsion
Improved Destroyer Hull



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Last edited:
Advanced Destroyer

Required research fields:

Naval Research
Artillery Research

Required components

Level 8 Theory:
Advanced ASW and Convoy Escorts

Level 8 Applications:
Advanced Destroyer Propulsion
Advacned Destroyer Hull



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Basic Cruiser

Required research fields:

Naval Research
Artillery Research

Required components

Level 1 Theory:
Basic Warship Design

Level 0 Applications:
Naval Cruiser Gun 180mm+
Basic Cruiser Hull


Level 1 Application:
Basic Cruiser Propulsion


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Improved Cruiser

Required research fields:

Naval Research
Artillery Research

Required components

Level 5 Theory:
Improved Warship Design

Level 0 Application:
Naval Gun 120mm+

Level 4 Application:
Naval Cruiser Gun 200mm+

Level 5 Applications:
Improved Cruiser Hull
Improved Cruiser Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Last edited:
Advanced Cruiser

Required research fields:

Naval Research
Artillery Research

Required components

Level 7 Theory:
Advanced Warship Design

Level 0 Application:
Naval Gun 180mm+

Level 4 Application:
Naval Cruiser Gun 200mm+

Level 7 Applications:
Advanced Cruiser Hull
Advanced Cruiser Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Last edited:
Nuclear Cruiser

Required research fields:

Naval Research
Artillery Research
Naval Warfare Doctrines

Required components

Level 11 Theory:
Semi-Modern Warship Design

Level 0 Application:
Naval Gun 120mm+

Level 4 Application:
Naval Cruiser Gun 200mm+

Level 5 Application:
Nuclear Support Doctrine

Level 7 Application:
Advanced Cruiser Hull

Level 11 Application:
Nuclear Cruiser Propulsion

Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Basic Battleship 150mm+

Required research fields:

Naval Research
Artillery Research

Required components

Level 1 Theory:
Basic Warship Design

Level 0 Applications:
Naval Gun 120mm+
Basic BB Hull


Level 1 Application:
Basic Battleship Propulsion


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Basic Battleship 350mm+

Required research fields:

Naval Research
Artillery Research

Required components

Level 1 Theory:
Basic Warship Design

Level 0 Applications:
Naval Battleship Gun 350mm+
Naval Gun 120mm+
Basic BB Hull


Level 1 Application:
Basic Battleship Propulsion


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Improved Battleship

Required research fields:

Naval Research
Artillery Research

Required components

Level 5 Theory:
Improved Warship Design

Level 0 Application:
Naval Gun 120mm+

Level 4 Application:
Naval Battleship Gun 400mm+

Level 5 Applications:
Improved Battleship Hull
Improved Battleship Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Advanced Battleship

Required research fields:

Naval Research
Artillery Research

Required components

Level 7 Theory:
Advanced Warship Design

Level 0 Application:
Naval Gun 120mm+

Level 4 Application:
Naval Battleship Gun 400mm+

Level 7 Applications:
Advanced Battleship Hull
Advanced Battleship Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Last edited:
Nuclear Battleship

Required research fields:

Naval Research
Artillery Research
Naval Warfare Doctrines

Required components

Level 11 Theory:
Semi-Modern Warship Design

Level 0 Application:
Naval Gun 120m+

Level 4 Application:
Naval Battleship Gun 400mm+

Level 5 Application:
Nuclear Support Organization

Level 7 Application:
Advanced Battleship Hull

Level 11 Application:
Nuclear Battleship Propulsion


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Basic Aircraft Carrier

Required research fields:

Naval Research
Naval Warfare Doctrines

Required components

Level 1 Theory:
Basic Warship Design

Level 0 Applications:
Naval Aviation Doctrine
Basic CV Hull


Level 1 Application:
Basic CV Propulsion


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Last edited:
Improved Aircraft Carrier

Required research fields:

Naval Research

Required components

Level 5 Theory:
Improved Warship Design

Level 5 Applications:
Improved Carrier Hull
Improved Carrier Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Advanced Aircraft Carrier

Required research fields:

Naval Research

Required components

Level 7 Theory:
Advanced Warship Design

Level 7 Applications:
Advanced Carrier Hull
Advanced Carrier Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Heavy Advanced Aircraft Carrier

Required research fields:

Naval Research
Naval Warfare Doctrine

Required components

Level 7 Theory:
Advanced Warship Design

Level 4 Application:
Maritime Air Superiortity Doctrine

Level 7 Applications:
Advanced Carrier Heavy Hull
Advanced Carrier Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Super-Heavy Advanced Aircraft Carrier 'Advanced class'

Required research fields:

Naval Research
Naval Warfare Doctrine

Required components

Level 7 Theory:
Advanced Warship Design

Level 4 Application:
[color]=lime]Maritime Air Superiortity Doctrine[/color]

Level 7 Applications:
Advanced Carrier Super-Heavy Hull
Advanced Carrier Propulsion



Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.
 
Last edited:
Nuclear Air Carrier

Required research fields:

Naval Research
Naval Warfare Doctrine

Required components

Level 11 Theory:
Semi-Modern Warship Design

Level 5 Application:
Nuclear Support Organization

Level 7 Application:
Advanced Carrier Heavy Hull

Level 11 Application:
Nuclear Carrier Propulsion


Green is an item that can be researched.
Rust is an item being researched.
Blue is an item that has been researched.