Understanding Seamoth Upgrade Route
Progress from the first vehicle to depth upgrades, repairs and Moonpool support.
This is an original reference for the first Subnautica. Your current depth rating, oxygen, available tools and navigation route determine when an objective is practical. Follow actual in-game PDA and Fabricator information for any values that vary by version.
How to use this information
Understand current depth limits before planning deeper biome trips.
What to avoid
A starter Seamoth cannot enter every lower cave safely.