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Standard O₂ 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.

This article is about the Standard O₂ Tank. You may be looking for the Lightweight High Capacity Tank, High Capacity O₂ Tank, or the Ultra High Capacity Tank.

Carrying multiple oxygen tanks will increase your survivable exposure time in hostile environments.

PDA, Dialogue


The Standard O2 Tank is a crafted piece of Equipment which boosts the Player's Oxygen supply by 30 units. The player has an equipment slot just for the Standard O2 Tank, freeing up space in their Inventory. Only the tank stored in the slot will give the player oxygen.

It can be upgraded into the High Capacity O₂ Tank at the Fabricator, which can be further upgraded into the Lightweight High Capacity Tank and the Ultra High Capacity Tank at the Modification Station.

Speed VariationEdit

# of Tanks
Dive Suit
Ultra Glide Fins
Top Speed 5.7 m/s 6.7 m/s 7.6 m/s
1 -14% -12% -7%
2 -28% -24% -19%
3 -42% -36% -31%
4+ -50% -40% -37%


GlassTitaniumTitaniumArrow-right (1)FabricatorArrow-right (1)Tank

Gallery Edit