The Oxygen Tank is a device that stores Oxygen Bottles for use at a nearby Oxygen Station. Refill your oxygen supply at the station.
The variants used for SVs and GVs is 1x1 meter container, with a capacity of 2 Oxygen Bottles each. The larger 2x1 CV and BA variants can hold a total of 10 Oxygen Bottles per container. Oxygen Tanks can only store Oxygen Bottles, and will display an error if the player attempts to place any other item within them.