Visuel officiel de Subnautica montrant un plongeur, un véhicule sous-marin et le monde océanique à explorer au début du jeu

[Guide] Subnautica beginner guide : safe base, oxygen, tools and Seamoth route

Visuel : les images appartiennent à leurs ayants droit respectifs.

Contents 6 min read

To use this Subnautica beginner guide well, start by making every dive safer instead of racing back to the surface in panic. Your early goal is to place a useful base near Lifepod 5, build a better oxygen margin, craft the tools that unlock progress, then move from the Seaglide to the Seamoth without wasting rare materials.

Key points

  • Subnautica is developed and published by Unknown Worlds Entertainment.
  • The official Steam page describes oxygen management, crafting, bases and submersibles.
  • Unknown Worlds lists Subnautica on Steam, Epic, Switch, Xbox and PlayStation.
  • The Xbox store confirms Xbox One, Xbox Series X|S, PC, cloud and handheld support.

Subnautica gives you very little hand-holding. Radio signals, fragments, wildlife behavior and oxygen pressure teach you the game. This route keeps discovery intact while avoiding costly mistakes: diving too deep too early, building a powerless base, ignoring the Scanner or filling storage with random materials.

For official reference, the Steam page confirms survival, crafting, oxygen, base and submersible systems. Unknown Worlds lists the game and supported platforms. You can also browse latest jeu.video updates, feature articles and news coverage.

Key Takeaways

  • Build your first base near Lifepod 5, in shallow water with clear landmarks.
  • Craft the Scanner, Repair Tool, Survival Knife and Flashlight before chasing bigger vehicles.
  • Enter caves only with a visible exit route and enough oxygen to leave safely.
  • The Seaglide makes short exploration safer; the Seamoth opens your first mid-game routes.
  • Store titanium, copper, quartz, silver and creepvine materials before crafting everything.
Subnautica diver swimming beside a submarine in clear water suitable for choosing a safe first base location
Your starter base should stay near clear water, simple resources and a fast route back to air.

Subnautica beginner guide: pick a base near Lifepod 5

The best early base is not the most impressive one. It is the one that saves time on every trip. Look for a spot between the Safe Shallows and the Kelp Forests. It should be shallow, bright and close to creepvine materials.

Do not rush to build next to the Aurora. That area is more dangerous and asks for better tools. Tight caves are also a poor first home. They contain useful materials, but they punish weak oxygen planning.

CheckGood ChoiceAvoid
DepthUnder 50 m early onDeep seafloor without a vehicle
ResourcesQuartz, titanium, copper and kelp nearbyLong trips for every craft
SafetyOpen view and direct exitDark corridors with frequent predators
ReadabilityEasy landmark from the LifepodHidden behind confusing terrain
Top-down view of Lifepod 5 in Subnautica showing shallow waters as a practical starting point for a beginner base
Lifepod 5 remains your anchor; your first base should shorten trips.

Start Subnautica safely by managing oxygen first

Oxygen controls your pace. Every dive should have a short objective: gather quartz, scan one fragment, collect acid mushrooms, search sandstone or follow a radio signal. If you dive just to look around, you will often turn back too late.

Before each descent, check your oxygen meter, the distance to the surface and the way out. In caves, keep roughly a third of your tank for leaving. If you find a rare resource but cannot see the exit, surface first.

  1. Repair the Lifepod as soon as possible to stabilize your starting point.
  2. Craft a better oxygen tank when the materials are available.
  3. Explore caves in short loops: entrance, resource, exit, breathe, then repeat.
  4. Place storage or a small base near repeated resource runs.
  5. Wait for the Seaglide before making deeper or nighttime exploration routine.
Interior of the Subnautica Lifepod showing equipment to repair before exploring farther from the starting area
Repairing the Lifepod gives your early game a safer rhythm and clearer progression.

Craft tools in the right order

The Scanner is your first major priority. It turns exploration into permanent progress. Every scanned fragment can push you toward the Seaglide, Habitat Builder, Mobile Vehicle Bay, Seamoth or base modules.

The Repair Tool should follow quickly. It fixes the Lifepod and becomes important once vehicles enter the picture. The Survival Knife lets you cut creepvines and defend yourself in emergencies. The Flashlight helps when you start searching caves and wrecks.

PriorityToolWhy It Matters Early
1ScannerUnlocks fragments, data and essential blueprints
2Repair ToolStabilizes the Lifepod and prepares vehicle use
3Survival KnifeCollects plant materials and offers basic defense
4FlashlightMakes caves and wrecks readable
5Habitat BuilderEnables oxygen, storage, power and crafting stations
Subnautica player using advanced equipment after the early Scanner and Habitat Builder progression stage
Advanced tools come later; the Scanner and Repair Tool carry the first hours.

Build a useful base, not a palace

Your first base should be practical. One tube, one hatch, a solar panel, a few lockers and a Fabricator are enough if you can afford them. The point is to create an oxygen and storage stop near resources.

Watch the power supply. A base without energy does very little. In shallow water, solar panels are simple and reliable. Later, you can move toward a Bioreactor, Moonpool and specialist rooms.

  • One locker for titanium and basic construction resources.
  • One locker for copper, silver, gold and electrical parts.
  • One locker for quartz, glass and building materials.
  • One mission locker with food, water, batteries and beacons.
Official Subnautica Steam asset showing underwater base building for resource storage and oxygen recovery
An early base exists to store, craft and restart dives with enough air.

Unlock the Seaglide, then aim for the Seamoth

The Seaglide is the first vehicle-style upgrade worth chasing. It speeds up travel, reduces failed oxygen returns and makes short detours safer. Scan fragments in shallow areas and accessible wreck crates.

Keep a spare battery ready. An empty Seaglide in a cave is dead weight. The Seamoth is the real mid-game threshold. It gives mobility, safety and oxygen, letting you visit farther biomes with less risk.

Before building it, unlock the Mobile Vehicle Bay and prepare the required materials. Once it is built, do not immediately dive into danger. Learn its depth limits, read threats and start looking for useful modules.

View from a Subnautica Seamoth facing a creature in a deeper biome that should be explored carefully
The Seamoth makes exploration safer, but predators can still punish careless routing.

Early mistakes to avoid

The first mistake is confusing curiosity with progress. Subnautica rewards exploration if you return with a blueprint, resource or useful clue. If your inventory is full of titanium while you still lack copper, you have not really moved forward.

The second mistake is ignoring beacons. A rich resource patch, cave entrance, fragment wreck or future base spot deserves a marker. Many landmarks look similar at night or when you are fleeing with 20 seconds of oxygen left.

The third mistake is crafting everything immediately. Keep reserves. A vehicle, tool or module may need exactly the material you just spent on decoration.

Burning Aurora in Subnautica showing why beginners should not rush far from base without tools and oxygen reserves
The Aurora is tempting from minute one, but it rewards preparation.

Frequently Asked Questions

Where should I build my first base in Subnautica?

Build near Lifepod 5 in shallow, open water between the Safe Shallows and Kelp Forests, with quick access to air and basic resources.

What tool should I craft first in Subnautica?

Craft the Scanner early. It unlocks fragments and turns normal exploration into blueprint progress.

How do I stop dying from low oxygen?

Keep one third of your tank for the exit, surface before entering unknown tunnels and wait for the Seaglide before taking longer routes.

Should I go to the Aurora immediately?

No. Bring core tools, food, water, mobility and a clear plan before approaching riskier Aurora routes.

When should I build the Seaglide?

Build it as soon as you scan the required fragments. It makes short dives safer and improves every resource run.

When should I start working toward the Seamoth?

Start after you have a small powered base, the Scanner, stored electrical materials and the Mobile Vehicle Bay blueprint.

Which resources should beginners keep?

Keep copper, silver, quartz, titanium, gold and acid mushrooms. They feed tools, batteries, electronics and base modules.

Where can I follow official Subnautica updates?

Verified sources

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