|This article is about the Standard O₂ Tank. You may be looking for the High Capacity O₂ Tank, Lightweight High Capacity Tank or Ultra High Capacity Tank.|
The player must equip the Standard O2 Tank in the tank slot of the Paperdoll UI in order to benefit from it. While not equipped, it takes up 6 slots (2x3) in the inventory.
Equipping or carrying any O2 Tank will incur a swimming speed penalty. For more information, see: Swimming Speed.