WreckGrand Reef

Grand Reef Wreck 2

1.60 km SW · 212° · 440 m deep-894, -440, -1426Show on map

Before you go

Doors

3× Sealed door: cut it open Laser cutter
1× Locked door with no way to open it

Reach it with

Seamoth + Seamoth depth module MK2
Prawn suit
Cyclops

Crush depths from the game's vehicle data. Depth guide

Fragments

105 random spawn spots here. Each spot rolls once when the area first loads; odds are for a new save.
Fragment	Unlocks	Spots	At least one	Expected
Prawn suit drill arm fragment	Prawn suit drill arm	43	99%	4.5
Thermal Plant fragment	Thermal plant	34	97%	3.4
Scanner room fragment	Scanner room	34	97%	3.4
Prawn suit grappling arm fragment	Prawn suit grappling arm	14	98%	3.3
Moonpool fragment	Moonpool	34	94%	2.7

Data boxes

Cyclops Decoy Tube UpgradeBlueprint

Cyclops sonar upgradeBlueprint

Cyclops thermal reactor moduleBlueprint

PDAs and terminals

Surveillance Log, Leisure Deck BPDA

Bearing and distance are measured from the centre of the area where your lifepod lands (it lands at a random spot up to 400 m away). Bearings follow the in-game compass.

Subnautica data: build 83031 (Oct 2025)