Games / Subnautica 2 / Depth Module MK1
1 Why Depth Module MK1 Opens New Worlds
The Depth Module MK1 upgrades your Tadpole from 200m to 300m depth capability. That extra 100 meters isn't just a number — it's the difference between seeing the ocean floor and discovering entirely new biomes, wrecks, and resources that are completely inaccessible without this upgrade.
At 300m, you gain access to the Deep Reef, Jellyshroom Caves, and several high-value wreck sites. These areas contain fragments for advanced vehicles, rare materials like Magnetite and Rubies, and story-critical data logs. Without this module, you're locked out of half the game.
2 Crafting Recipe
Final Craft
Titanium Ingot x1 + Ruby x2 + System Chip x1 → @ Vehicle Modification Station = Depth Module MK1
Complete Materials List
| Material | Qty | Source | Location | Rate |
|---|---|---|---|---|
| Depth Module Fragment | 2 | Scan fragments | Grassy Plateaus Wreck (~120m) / Sparse Reef (~200m) | 100% (scan) |
| Titanium Ingot | 1 | Craft | 10 Titanium @ Fabricator — Limestone Outcrops | — |
| Ruby | 2 | Ruby outcrops | Blood Kelp Zone (~200-300m) / Jellyshroom Caves (~250m) | 100% (node) |
| System Chip | 1 | Craft | 1 Gold + 1 Copper Wire @ Fabricator | — |
3 Materials & Locations
Each material with exact location, drop rate, and farming tips.
⚒ Depth Module Fragment
Location: Grassy Plateaus Wreck (~120m) / Sparse Reef (~200m)
Drop Rate: 100% (scan)
⚒ Titanium Ingot
Location: 10 Titanium @ Fabricator — Limestone Outcrops
Drop Rate: —
⚒ Ruby
Location: Blood Kelp Zone (~200-300m) / Jellyshroom Caves (~250m)
Drop Rate: 100% (node)
⚒ System Chip
Location: 1 Gold + 1 Copper Wire @ Fabricator
Drop Rate: —
4 Optimal Collection Route
Follow this order to minimize backtracking and maximize efficiency.
① Scan Fragments (200m+ zone)
Fragment 1: Grassy Plateaus wreck (~120m) — accessible with base Tadpole, look for the orange glow of the fragment
Fragment 2: Sparse Reef (~200m) — right at your Tadpole's limit, plan your route carefully
② Find Rubies
Rubies are found in Blood Kelp Zone (~200-300m) and Jellyshroom Caves (~250m). Problem: These areas are at or beyond your Tadpole's 200m limit without the upgrade! Solution: Use Seaglide + High Capacity Air Tank to reach Ruby outcrops at exactly 200m edge, or look for Ruby outcrops on elevated terrain in Blood Kelp.
③ Craft and Install
Build Vehicle Modification Station at your base → Craft Depth Module MK1 → Install on Tadpole
DEPTH LIMIT: 300M
5 ⚠ Gotcha Tips — Don't Waste Your Time
Read this BEFORE you start.
This is the hardest part. Most Ruby deposits are at 220-280m — past your Tadpole's limit. Look for Ruby outcrops on elevated terrain in Blood Kelp Zone (some sit at exactly 195-200m). Alternatively, use Seaglide + extra O2 tanks for a deep dive.
Blood Kelp Zone is home to Crabsquids (EMP attack disables vehicles) and Ampeels (electric defense). Approach slowly, stay near the seafloor, and retreat if EMP'd.
The Mod Station requires its own fragments (found in Safe Shallows/Kelp Forest wrecks at ~50-100m). Build this BEFORE hunting Depth Module fragments.
6 🎁 Free Benefits — Loot Along the Way
Don't leave empty-handed.
While scanning the fragment: The wreck contains data logs, supply crates, and often unlocked lockers with free batteries/food.
While hunting Rubies: Blood Kelp is the only source of Blood Oil (for Benzene → advanced materials). Collect it — you'll need it later for Plastic and Synthetic Fibers.
If you explore to 250m: Jellyshrooms have Magnetite deposits on their stalks (for Advanced Wiring Kit), and the caves contain unique fauna scans and precursor tech.