How to get a Tadpole submarine

Answer first

Scan three Tadpole fragments, unlock the Moonpool, build a Vehicle Fabricator, and craft the Tadpole. Prepare the System Chip and Power Cell first, then check which station your build uses for Strong Acid.

Strong Acid may appear in the Fabricator or Processor, so check both menus before farming cysts or Gold/Sulfur.

Field notes

MaterialsTitanium Ingots ×2, Glass ×1, System Chip (Wiring Kit + Quartz ×2), Power Cell (Basic Battery ×2 + Strong Acid + Salt)
ToolsScanner, Moonpool, Vehicle Fabricator
Depth / zoneShallow → mid; Moonpool room

Steps

  1. Enable landmark signals in the character/pause menu so wreck and blackbox markers show.
  2. Scan any three Tadpole fragments — Polygon lists multiple early picks (Welcome Center cliff ruins; current/ravine NE; ribcage plateau NE; seabed by Old Habitat; two at Tadpole Pens).
  3. At Tadpole Pens, also grab the Moonpool blueprint crate beside the docked Tadpole and scan Scout Ray chassis wings if present.
  4. In a large habitat room, place Moonpool (5 Titanium) then Vehicle Fabricator on the Moonpool edge (2 Titanium Ingots, 1 Copper Ingot, 2 Glass).
  5. Prepare the System Chip at a Fabricator (1 Wiring Kit + 2 Quartz) and the Power Cell at a Fabricator (2 Basic Batteries + 1 Strong Acid + 1 Salt). If Strong Acid is not in your Fabricator, use the facility that your current build lists for it; do not assume the older Processor-only route.
    Original factual diagram of the Tadpole, System Chip, and Power Cell material chain
    Image: Original site diagram based on the listed recipe sources; no game asset
  6. Craft Tadpole at the Vehicle Fabricator, then add a Tadpole Dock later to recharge.
Small submersible docked in a habitat moonpool
Image: Unknown Worlds / Steam store screenshot — official store media; scene reference only · View original source ↗

Checklist

Version differences and limitations

Sources