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This article is about T Compartment in Below Zero. Click here for information on this subject in Subnautica.

The T Compartment is a Seabase module shaped like a "T".

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

At the surface, a T Compartment has an integrity level of nine and every T Compartment added reduces the integrity by -1 level. By default, it can be rotated before placement using the mouse wheel.


  • Hatches can be placed on the single side-panel, the end-panels, and both the floor and ceiling.
  • Windows can be placed on the side-panel, 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 can be placed on the side-panel.
  • The T Compartment can be expanded with other modules from its three end-panels.
  • Smaller components such as the Fabricator can be placed inside.


The blueprint for this item is unlocked by unlocking the Habitat Builder. It is crafted with the Habitat Builder.

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