Lightweight High Capacity Tank

The Lightweight High Capacity Tank (henceforth LW-HCT) is an equipment upgrade for the High Capacity O₂ Tank. It provides the same +90 units of oxygen (for a total of 135), but with a slightly lower Swimming Speed penalty: -0.1 m/s underwater and -0.13 m/s on the surface, compared to the High Capacity tank's -0.4 and -0.53 m/s.

In effect, the player's swim speed is only about 4% greater with the LW-HCT versus the regular HCT. Wearing the ultra-HCT (which provides 1.667x the oxygen capacity of the LW-HCT), the player's swim speed is only about 6% greater than with the LW-HCT. For this reason, the ultra-HCT is almost unanimously the better late-game tank.

Stats

Feature	Details
Tab	Equipment
Description	Lighter build allows for enhanced manoeuvrability.
Build Time	3 seconds
Size	6 (2×3)
Perks	Additional air capacity
Penalties	-0.1/-0.13 m/s surface/underwater
Debug Spawn	`plasteeltank`

Crafting

The LW-HCT can be crafted at the Modification Station combining a Plasteel Ingot and a High Capacity tank, after the player has retrieved its blueprint from a Data Box. When fabricated it is empty, even if the upgraded tank was full, and must be equipped in the tank slot of the Paperdoll UI while in atmosphere to be filled.

While not equipped, the LW-HCT takes up six slots (2×3) in the inventory with no speed penalty. Speed penalties only affect unassisted swimming, and do not matter while using a Seaglide.