Assembly Complete Port Connectivity - this page describes which ISS elements are docked to each other - and which docking ports or locations are used.
FGB Control Module ("Zarya") [in space] - The Functional Cargo Block (FGB) was the first piece of the International Space Station (ISS) to be placed in orbit. It was built by Russia and paid for by the U.S. The FGB's prime function was to provide the initial propulsion, power, guidance, and navigation control for the ISS as it was being assembled.
Node 1 ("Unity") [in space] - Node 1 is a U.S.-provided element that provides six docking ports (four radial and two axial) for the attachment of other modules. Node 1 provides internal storage, serves as a link between ISS modules, and provides external attachment points for the truss.
Service Module ("Zvezda") [in space] - The Service Module is provided by Russia and serves as the initial living quarters for the first Expedition crews to live aboard the ISS. It also provided initial guidance, navigation, communication, life support, and propulsion for the entire ISS.
U.S. Laboratory Module ("Destiny") [in space] - The U.S. Laboratory Module is designed to house the research hardware and supporting systems required to allow a wide range of scientific and technological research to be conducted aboard the International Space station.
Joint Airlock - The Joint Airlock is provided by the U.S. and provides the capability for ISS-based Extravehicular Activity (EVA) using either a U.S. Extravehicular Mobility Unit (EMU) or Russian Orlon EVA suits.
Multi-Purpose Logistics Module (MPLM) [in use] - MPLMs are carried to and from the ISS in the cargo bay of a Space Shuttle Orbiter. MPLMs are pressurized throughout their mission and carry payload racks and other materials to and from the ISS. Three MPLMs have been provided by Italy.
JEM - Japanese Experiment Module ("Kibo") - JEM is provided by Japan. JEM has the prime function of supporting a wide range of life science and materials processing research and development experiments. JEM has three parts a Pressurized Module, a smaller Pressurized Section, and an external Exposed Facility.
APM - Attached Pressuized Module ("Columbus") - Columbus is provided by the Eurpopean Space Agency and houses research racks for a variety of life science and microgravity experiments.
Integrated Cargo Carrier - The Spacehab Integrated Cargo Carrier is used to accommodate and support the transfer of exterior cargo from the shuttle orbiter to the International Space Station and from the station to work sites on the truss assemblies.
Ultra High Frequency (UHF) antenna [in space] - The Ultra High Frequency (UHF) antenna is attached to the U.S. laboratory Destiny. The UHF subsystem is used for space-to-space communication (voice, commands and telemetry for the space station).
Z1 Truss Segment [in space] - The Z1 is the base structure for the U.S. solar array and is attached to the zenith side of the U.S. Lab module.
Node 2 - Node 2 is an Italian-provided element that provides six docking ports (four radial and two axial) for the attachment of other modules. Node 2 will be attached to the US Lab module and will provide internal storage and serve as a link between ISS modules (JEM, APM, CAM, MPLM).
Node 3 - Node 3 is an Italian - provided element that provides six docking ports (four radial and two axial) for the attachment of other modules. Node 2 will be attached to Node 1 and will provide internal storage and serve as a link between ISS modules (HAB, CRV, PMA).
Centrifuge Accommodation Module (CAM) The CAM is a laboratory module dedicated to gravitational biology research. It will house a 2.5 meter diameter centrifuge facility and associated holding racks and research equipment. The CAM is being built in Japan for the U.S.