Vehicle Guide — Subnautica 2 Submersibles: Stats, Depth Modules & Upgrades

Subnautica 2 vehicles are your ticket to the deepest biomes, and choosing the right submersible for each depth range is critical for efficient exploration. This vehicle guide covers every craftable vehicle in the Early Access build: the Seamoth, Prawn Suit, Sea Truck, and the new Glider Ray mount. Each vehicle has unique depth limits, speed profiles, and upgrade slots that determine where and how you can use them. This vehicle guide ranks Subnautica 2 vehicles by utility and provides module recommendations for each biome tier.

Vehicle stat comparison

Understanding the raw stats of each vehicle is the first step in this vehicle guide. The Seamoth is the fastest vehicle but has the lowest depth ceiling among submersibles. The Prawn Suit is slow but can reach the deepest zones and carries dual arm attachments for mining and combat. The Sea Truck offers modular flexibility but requires significant investment to reach its full potential. The Glider Ray is not a traditional submersible — it is a tamed creature mount that requires no power cells, making it the most economical option for shallow-to-mid-depth exploration. All powered Subnautica 2 vehicles require a Moonpool or Vehicle Charging Station to recharge, except the Glider Ray which regenerates stamina when fed.

Upgrade paths and module recommendations

The most important upgrades in this vehicle guide are depth modules. Each vehicle starts with a default depth limit and requires sequential MK1, MK2, and MK3 depth module upgrades crafted at the Vehicle Upgrade Console. The Seamoth benefits most from speed modules and the sonar system — the sonar reveals terrain and creatures in dark biomes and is essential for navigating the Deep Zone. The Prawn Suit's arm attachments define its role: drill arm for mining large deposits, grapple arm for mobility (swinging across deep chasms), and propulsion arm for combat. This vehicle guide recommends the drill arm plus grapple arm combo for most Prawn Suit expeditions. The Sea Truck's modular design allows cargo modules (extra storage), habitat modules (mobile room with fabricator), and sleeper modules (oxygen refill station). The Glider Ray's single upgrade slot is best used with the speed fin to maximize its already impressive sprint speed.

Vehicle docking strategy matters for base design. The Seamoth docks in a standard Moonpool. The Prawn Suit requires a separate Prawn Dock module. The Sea Truck can dock at a Moonpool but the modular extensions make it too wide for most base corridors — build a dedicated Sea Truck dock with a wide entrance. The Glider Ray does not dock; it follows you when idle and can be recalled with the Creature Call device. For deep expeditions, this vehicle guide recommends building a Moonpool at your mid-depth base and a Prawn Dock at your deep biome outpost, allowing you to switch vehicles without returning to the surface.