Navigating the frozen landscapes of planet 4546B in Subnautica Below Zero requires players to overcome several mechanical and environmental obstacles. One major milestone involves repairing the heavy bridge located in the Glacial Bay region to gain access to deeper terrestrial areas. Understanding how to craft Hydraulic Fluid is essential for restoring the bridge controls and advancing your exploration safely.
Unlocking the Hydraulic Fluid Blueprint in Glacial Bay
Before you can craft Hydraulic Fluid, you must first acquire its blueprint by scanning a specific damaged component in the world. When you arrive at the Glacial Bay bridge, inspect the maintenance panel adjacent to the bridge control console. Equipping your Scanner tool and scanning the ruptured hydraulic fluid canister will instantly synthesize the recipe into your PDA.
This scanning requirement ensures that players encounter the puzzle naturally before needing to collect the necessary materials. Once the blueprint is stored, you can return to your base or Seatruck fabricator to prepare the ingredients.
Required Crafting Resources and Where to Find Them
Crafting a single unit of Hydraulic Fluid requires two distinct aquatic resources gathered from around the map. You will need four Gel Sacks along with one Creepvine Seed Cluster to complete the recipe at a Fabricator. These materials are relatively easy to acquire once you know which biomes to explore.
Gel Sacks can be harvested from dark organic growths attached to cave walls and seabed formations in biomes like the Twisty Bridges or Deep Lilypads. Meanwhile, Creepvine Seed Clusters are glowing yellow pods easily gathered from the tall Creepvine stalks found in the Arctic Kelp Forest.
Fabricating and Installing Hydraulic Fluid at the Bridge
With four Gel Sacks and one Creepvine Seed Cluster in your inventory, interact with any standard Fabricator under the electronics category. Processing these raw organic components creates the synthesized fluid required to power the mechanical bridge lifts.
Return to the Glacial Bay bridge and approach the empty hydraulic compartment where you previously scanned the blueprint. Insert the newly crafted Hydraulic Fluid directly into the slot and interact with the primary control console to extend the walkway. Crossing this bridge opens up key story pathways across the icy terrain.