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Field Report · v1

Seamoth Hull Upgrades

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Crafting path, fragments and depth ratings for every Seamoth hull upgrade module.

Last refreshed May 18, 2026

Seamoth Hull Upgrades

The Seamoth is the workhorse submersible of any Subnautica 2 playthrough. Push its crush depth before pushing your luck.

UpgradeCrush DepthFragments needed
Hull Mk I300 m2
Hull Mk II500 m3
Hull Mk III900 m4

Pair the Mk II hull with the Cure-All Reaper Strategy route to survive the Crash Zone descent.

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