Where to Find Modification Station Fragments in Subnautica

If you've been exploring the ocean depths in Subnautica and hit a crafting wall, chances are the Modification Station is on your priority list. This workbench upgrades your tools, suits, and equipment — but before you can build one, you need to scan enough of its fragments scattered across the seafloor. Knowing where to look saves hours of aimless diving.

What Are Modification Station Fragments?

In Subnautica, most advanced blueprints aren't handed to you directly. Instead, you scan fragments — broken pieces of equipment left on the ocean floor — using your Scanner tool. Once you've scanned enough fragments of the same item, the full blueprint unlocks automatically.

The Modification Station requires 3 fragments to unlock its blueprint. After that, you can build it inside a base or Seabase module using:

• 1× Computer Chip
• 2× Diamond
• 1× Titanium
• 1× Gold

But none of that matters until you've found those three fragments first.

Primary Locations for Modification Station Fragments 🗺️

Modification Station fragments tend to cluster in a handful of biomes. They're not random — the game seeds them in specific zones, though exact positions on the map can vary slightly between saves.

Kelp Forest

The Kelp Forest is often the most accessible early-game source. This biome sits relatively close to the starting Lifepod and doesn't require a vehicle to explore thoroughly, though a Seaglide makes sweeping it much faster. Look for fragments resting on sandy patches between the large kelp columns and around wreckage debris on the biome floor.

Grassy Plateaus

The Grassy Plateaus is another high-yield zone for Modification Station fragments. It's a wide, relatively shallow biome (roughly 50–150m depth) with scattered Degasi wreckage and debris fields. The flat terrain makes scanning easier — fragments tend to sit in the open rather than tucked under geometry.

Wrecks (Especially Large Ones)

Wrecks are among the most reliable sources. Large wrecks — found in the Grassy Plateaus, Mushroom Forest, and other mid-range biomes — contain interior rooms with fragments spread across floors and shelves. Bring a Laser Cutter to access sealed doors. The fragments inside wrecks are often clustered, meaning one wreck visit can net you two or even all three scans needed.

Mushroom Forest

The Mushroom Forest sits slightly deeper and further from the starting zone, but it's a solid secondary option. The biome has several wreck sites and debris fields that commonly include Modification Station fragments alongside other useful blueprints.

Variables That Affect Your Search 🔍

No two Subnautica saves are identical. Several factors determine exactly how your search plays out:

Seed variation — Fragment spawn positions shift between saves. A fragment sitting in the center of a Grassy Plateaus clearing in one run might spawn closer to a cliff edge in another.

Scanning order — Fragments from different equipment share floor space. If you're prioritizing other blueprints simultaneously, you might scan the same debris field and come away with Vehicle Upgrade Console or Fabricator fragments instead.

Progress stage — If you've already triggered certain story events, some wreck areas may have changed or become more hazardous. Early-game exploration of the Kelp Forest and Grassy Plateaus avoids most of these complications.

Visibility and lighting — Fragments are small and often blend with sandy or rocky floors. Time of day in-game, water clarity in different biomes, and your current depth all affect how far you can see. A Flashlight or Seaglide with lighting makes fragment hunting meaningfully more efficient.

What to Bring Before You Go

Preparation changes how productive a fragment run feels:

A single well-equipped dive into a large wreck in the Grassy Plateaus can unlock the Modification Station in one session — or it might take two or three focused runs across different zones depending on where your fragments spawned.

How the Modification Station Changes Your Game ⚙️

Once built, the Modification Station fundamentally expands what your equipment can do. It's the workbench that allows upgrades like:

• Reinforced Dive Suit (reduces damage taken)
• Ultra High Capacity Tank (dramatically increases oxygen)
• Ultra Glide Fins (faster swimming)
• Knife upgrades (heat blade, etc.)

These upgrades matter more the deeper your exploration goes. Players heading toward biomes like the Jellyshroom Cave, Lost River, or Inactive Lava Zone feel the difference sharply — better oxygen capacity and suit protection aren't cosmetic at those depths.

The Difference Between Knowing the Locations and Finding Them

The biomes above represent where Modification Station fragments reliably appear across most Subnautica saves. But how quickly you find all three depends on factors specific to your current run — which wrecks you've already explored, how your seed placed the fragments, what depth you're comfortable diving without a vehicle, and whether you're scanning systematically or sweeping broadly.

Some players finish the scan in 20 minutes by getting lucky inside a single large wreck. Others spend multiple sessions clearing debris fields before the third fragment appears. The locations narrow the search considerably — but your specific save, your current gear, and how methodically you sweep each zone are what determine the actual experience.