High Capacity O₂ Tank (Subnautica)

The High Capacity O₂ Tank is an Equipment piece and an upgrade to the Standard O₂ Tank. It is crafted at the Fabricator.

While equipped, it boosts the player's maximum Oxygen supply by 90 units. Only the tank equipped in the Paperdoll UI Slot will give the Player oxygen.

It can be upgraded into the Lightweight High Capacity Tank or the Ultra High Capacity Tank at the Modification Station.