How to Get High Capacity O₂ Tank in Subnautica: Below Zero
High Capacity O₂ Tank comes from a data box. The box is listed with coordinates below.
Data: Subnautica: Below Zero game files (build of 12 Aug 2025), read and drawn by PinDrop. (c) Unknown Worlds Entertainment. PinDrop is fan-made and not affiliated with Unknown Worlds Entertainment.
How to unlock High Capacity O₂ Tank
Data box
One data box unlocks it. Coordinates are in the table below.
The game files read for this page do not say whether you start with this blueprint.
Where the pins are
Depth in metres: negative is below sea level, positive above.
| Pin | Area | Depth (m) | Position | Map |
|---|---|---|---|---|
| Data box | Shallow Twisty Bridges | -128 | x -253, z -242 | Show on map |
What High Capacity O₂ Tank needs
In-game description: "O₂ mix. Highly-compressed breathable air."
Standard O₂ Tankx 1
Glassx 2
Titaniumx 4
Silver orex 1
Crafted at: Fabricator, Seatruck Fabricator Module, craft time 5 s.
Menu path in the files: Fabricator: Personal > Equipment > Double Tank · Seatruck Fabricator Module: Personal > Equipment > Double Tank.
What High Capacity O₂ Tank is used in
3 named recipes use it as an ingredient.
Booster tankFabricator, Seatruck Fabricator Module
Lightweight high capacity tankno station listed
Ultra high capacity tankModification station
About the High Capacity O₂ Tank blueprint
High Capacity O₂ Tank comes from a data box. Once unlocked it is made from 1 standard o₂ tank, 2 glass, 4 titanium, 1 silver ore.
See all data boxes and fragments, or the full crafting list.