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.

It boosts the player's Oxygen supply by 90 units. Only the tank stored in the 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.