The Basic Compartment or I Compartment is the most basic Seabase module.

It is constructed with the Habitat Builder, and can be placed on top of a Foundation, although it is possible to build off the foundation. The Compartment module can be deconstructed, but all attached components on that single module must be deconstructed first.

At the surface, a Basic Compartment has a Hull Integrity level of 9 and every Basic Compartment added reduces the integrity by -1 level. During placement, it can be rotated using the mouse wheel by default.


  • Hatches can be placed on the side-panels, the end-panels, and both the floor and ceiling.
  • Windows can be placed on the side-panels, the end-panels, and the ceiling.
  • Ladders can be placed on the floor and ceiling when there is an adjacent seabase module to connect.
  • Reinforcements and Wall Planters can be placed on the side-panels.
  • The Basic Compartment can be expanded with other modules from its two end-panels.
  • Smaller components such as the Fabricator can be placed inside as well.


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