Which vehicle reaches the deepest in Subnautica 2?

The Cyclops submarine with three Depth Module Mk3 upgrades reaches 2200 meters — deep enough for the Inactive Lava Zone. The Prawn Suit with a single Depth Module Mk3 reaches 1700m, and the Seamoth with Mk3 caps at 900m. Use the target depth selector in this tool to plan the right vehicle.

Can I run Solar Charger and Thermal Reactor on the same Seamoth?

No. The compatibility matrix flags Solar Charger and Thermal Reactor as a hard conflict — running both at once causes a power loop and drains the battery in seconds. Pick one or the other based on your biome's energy availability.

What is the best Prawn Suit arm for resource gathering?

The Drill Arm is the fastest at breaking limestone and sandstone outcrops, while the Grappling Arm doubles as a movement tool for Lost River and Inactive Lava Zone jumps. Many players run Drill + Grappling as a balanced pair.

How does the cross-vehicle comparison work?

After you build a loadout on each vehicle tab, switch to the Compare tab to see a side-by-side table of depth, power drain, defense, speed index, special abilities, and storage for all three vehicles at once.

Are my saved loadouts private?

Yes. All saved loadouts are stored in your browser's localStorage under the sn2_vehicle_loadouts key. Nothing is uploaded to any server, and you can export or import JSON files to move loadouts between devices.

Vehicle Loadout Optimizer

Build optimal module combinations for the Seamoth, Prawn Suit, and Cyclops. 30+ modules with live compatibility checks, depth calculator, and 3 quick-start presets tuned for early, mid, and late-game progression.

How it works: Pick a vehicle tab, drag modules from the library into its slots, and watch the KPI panel update in real time. Compatibility issues flash red; depth targets show which vehicles can reach your dive site. Save your favorite combinations and export as JSON.

Vehicles

30+

Modules

Quick Presets

—

Target Depth

Conflicts

Cross-Vehicle

Quick Start Presets

One-click apply — overwrites current loadout

Loadout Editor

Seamoth

Compact single-seat submersible — 3 module slots.

Loadout Effect

Power Drain

Defense Bonus

200

Max Depth (m)

100

Speed Index

Special Abilities

Storage Slots

Compatibility Check

No conflicts detected.

Active Abilities

Equip modules to unlock abilities.

Target Depth Selector

See which vehicles can reach your dive site

Saved Loadouts

No saved loadouts yet. Build one and click "Save Current".

Cross-Vehicle Comparison

Side-by-side stats from current loadouts

Vehicle	Max Depth	Power Drain	Defense	Speed Idx	Storage	Abilities

Related Tools

All tools →

Plan your trip

Route Planner — Biome Traversal Paths

Now that your vehicle is loaded out, map the route. Biome risk levels, depth charts, and respawn point planning.

Frequently Asked Questions

How are module compatibility conflicts detected?

A declarative rule set evaluates every pair of equipped modules. Two rules per vehicle: (1) power-source conflicts — Solar Charger cannot coexist with Thermal Reactor on the same vehicle because they alternate which is active in their respective domains, and (2) weight conflicts — Hull Plating + Storage Module together reduce maneuverability below safe thresholds. Warnings (yellow) flag soft conflicts like two Depth Modules where Mk3 already dominates Mk1.

How accurate are the depth and power numbers?

Base vehicle depths and power drains are from EA patch 0.1.0.0 community testing. Module bonuses follow the formula base + sum(module bonus). The Cyclops depth shown is the standard Cyclops without moonpool upgrades. Verify against the in-game fabricator if you see drift — patches rebalance these values frequently.

Can I share loadouts with friends?

Yes. Use Export JSON to download every saved loadout as a portable file. Friends can use Import JSON to load them locally. Loadouts are also stored in your browser's localStorage under the key sn2_vehicle_loadouts, so back them up before clearing browser data.

What does the "Speed Index" mean?

A normalized score where 100 is the stock vehicle speed. Ultra Glide Fins (Seamoth) boost it, while heavy modules like Hull Plating and additional Depth Modules stack weight penalties. It's a rough composite — actual in-game speed depends on water currents and whether you're ascending or descending.

Wrong module stats or missing options?

Module values are tuned for the current EA patch. Report mismatches and we'll update the database.

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