Base Building

Base Building

Build a home under the sea

Rooms, power, and utilities for every playstyle. Filter by function and plan your layout before you commit titanium.

Quick reference — readable without JavaScript
ModuleCategory
🧩 Piece-by-Piece Constructionstructure
🪟 Custom Windows & Glass Wallsstructure
🎨 Custom Color & Lightingutility
🔽 Descent Elevatorutility
🌊 Hydro Powerpower
♨️ Thermal Powerpower
🛠️ Fabricator & Craftingfabricator
Base planner

Plan your capability loadout

Tick the modules you intend to build. We summarize what your base will be able to do — not the material bill (piece costs aren't public yet).

Build calculator

Estimate your material haul

Enter how many of each piece you plan, and we tally the raw materials. Rates are editable — fill in costs from your scanned blueprints.

⚠ Subnautica 2 builds piece-by-piece — there are no fixed prefab room recipes and exact material costs aren't published in Early Access. The Moonpool's 5 Titanium is confirmed in-game. Everything else starts blank; load the SN1 reference preset as a planning baseline, or type your own scanned costs.
SN1 → SN2 resource conversion hints

Basic ores map 1:1 across both games, so the Load SN1 reference preset is a safe planning baseline for them:

  • Titanium, Lead, Quartz, Glass, Copper, Lithium — same name & role in SN1 and SN2.
  • Lubricant & Enameled Glass — building consumables present in both titles, but per-piece costs differ; treat SN1 figures as a rough estimate only.

SN2 piece-by-piece building has no published exact costs — always confirm against your own scanned blueprints.

Material rate per piece

Quick base-building tips

  • • Power comes in three tiers: Solar Panels early (surface daylight), Hydro Turbines in ocean currents (mid), Thermal Plants at vents (late, near-limitless). Bridge the gaps with a Battery Terminal.
  • • Build your first base near the Lifepod, then a second at Red Grass Mesa — current-swept and sheltered, ideal for Hydro Power.
  • • You need a Tadpole Dock (plus a Vehicle Fabricator) before you can build or upgrade the Tadpole — prioritize it once you have fragments.
  • • Piece-by-piece construction is the headline change: place individual panels and stretch surfaces into any shape. Plan your corridors before you commit titanium.
  • • Watch hull integrity: too many connected modules without Foundation or Support Pillars cause flooding or collapse. Add supports as you expand.