Major Components of the ISS

Real, and at some time proposed

(Roughly in their assembly sequence as proposed, actual, and planned)

Mir US Laboratory JEM CTV/CRV
FGB / Zarya SSRMS Propulsion Module  
Node-1 / Unity   Node-2 Solar Gas Turbine Units
PMA-1 / PMA - 2 / PMA - 3 MPLM Research Module 2  
Service Module / Zvezda     ARD
Interim Control Module Science Power Platform S3 Truss ATV
  HTV
Progress M1 US Airlock S4 Truss
Soyuz-TM   Universal Docking Module
S0 Truss Life Support Module
FGB-2   Life Support Module 1 European Robotic Arm
Universal Docking Module 1 S1 Truss Life Support Module 2  
  APM (COF) Columbus Module Enterprise
Z1 Truss Research Module 1    
Universal Docking Module 2   Node-3 Cupola 1 / Cupola-2
Node-2 (US) Research Module 3  
Docking Compartment 1 P1 Truss    
P3 Truss Centrifuge Accomidation Module Multipurpose Module
P6 Truss P4 Truss S5 Truss  
P5 Truss  
LTV Docking Compartment 2 S6 Truss  
Progress M2 Docking & Stowage Module US Habitation Module  
   Docking & Stowage Module 1 Transhab  
PV Arrays Docking & Stowage Module 2    

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