Habitation Module

About the size of a bus, the module was canceled after its pressurized hull was complete.

In order to accommodate more than three people on the ISS, a lifeboat craft other than a single Soyuz TMA would be needed and such a Crew Return Vehicle was not there at that time.

On 14 February 2006 it was decided to recycle the Habitation Module for ground-based Life Support Research for future missions.

With the cancellation of the Habitation Module, sleeping places are now spread throughout the station.

Some engineers in Britain have also proposed a Habitation Extension Module which could be attached to Node 3.