This article is about the Ultra High Capacity Tank. You may be looking for the Standard O₂ Tank, High Capacity O₂ Tank or Lightweight High Capacity Tank.
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This article contains information that is updated for the latest Experimental Version of Subnautica. Players using stable mode may find this information inaccurate.

The Ultra High Capacity Tank is a piece of Equipment and an upgrade to the High Capacity O₂ Tank. It can be crafted at the Modification Station after retrieving its Blueprint from a Data Box. It boosts the player's Oxygen supply by 180 units.

The player must equip the Ultra High Capacity Tank in the tank slot of the Paperdoll UI in order to benefit from it. While not equipped, it takes up 9 slots (3x3) in the inventory.


High Capacity O₂ TankLithium×4Arrow-right (1)Modification StationArrow-right (1)Ultra High Capacity Tank

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