|This article is about the Plasteel Tank. You may be looking for the O₂ Tank or the High Capacity Tank.|
Just like the regular tank, it boosts the player's Oxygen supply by 30 units. However it has a lower weight than the regular version, thus increasing the player's swimming speed in comparison to the regular tank.
The player can carry multiple tanks at a time. The Plasteel Tank also takes up four slots (2x2) in the player's Inventory.