Quarantine Enforcement Platform

This seems new This article contains information that is updated for the latest Experimental Version of Subnautica. Players using stable mode may find this information inaccurate.

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   <default>Quarantine Enforcement Platform</default>
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Structural Analysis complete. Designation: super weapon. Evidence suggests this facility will intercept all ships attempting to approach or take off from the planet. Scanning for any method of disabling the weapon.

― PDA, Dialogue

The Precursor Ground-To-Air Weapon System is a huge weapon that will be located by the Mountain Island. It fired the energy pulses responsible for causing both the Degasi and Aurora to crash on Planet 4546B, as well as eventually destroying the Sunbeam.

The weapon was built by the Precursor race around one thousand years ago, in order to prevent the spread of Carar.

The player must locate the purple Precursor Artifact to gain entrance to the facility, and must cure himself of Carar before being able to disable the gun and leave the planet.

To view the weapon aiming and firing, type 'precursorgunaim' into the console. To view just the firing FX, type "playsunbeamfx" into the console. 

Warpers can be found around the Precursor Ground-To-Air Weapon System.

A small amount of Ion Crystals can be found here.

Resourses

• Ion Crystals
• Purple Precursor Artifact

Interior

The Precursor Ground-To-Air-Weapon System's interior consists of two major areas, the upper section and the submerged lower section. Both sections have separate entrances, although the player can take an anti-gravity elevator found within the facility in order to access one section from the other. The purple Precursor Artifact is required in order to unlock the upper entrance, the elevator, and the deactivation terminal room.

Upper Section

The entrance to the upper section can be found on the beach of the Mountain Island, a large door gives access to the interior from here. Multiple data terminals and ion crystals are found here. The player will receive a notification from their PDA about the location of the Secondary Research Facility if they explore enough of the facility.

Lower Section

The entrance to the lower section is a large opening in the side of the "tower", which gives access to a large moonpool. The moonpool is just large enough to fit a Cyclops submarine. Inside the moonpool room are two doors, one leading to the right and one leading straight forward. The door to the right leads to the elevator, while the other door leads deeper into the facility, into a room dominated by a series of platforms and ramps. In the corner of the "ground floor" of the room is a winding hallway that leads to the Precursor Teleporter room. Going up the ramps will lead the player to the control room. The deactivation terminal can be found here, which will unfold and activate when you are near it.

Data Bank Entry

<tabber> Energy Core=

Massive energy readings for this structure indicate it is the main reactor powering the alien weapon's laser system. If this system could be powered down, it may be possible to escape the planet's atmosphere.

</tabber>

Gallery

<tabber> In Game Screenshots=

• 

  The moonpool entrance

• 

  Suspended structures outside the cannon

• 

  The Ground To Air Weapon System firing at the Sunbeam

• 

  Overview

• 

  Night view

|-| Videos=

• SN PrecursorGun 01

  Energy pulse animation

• Badaboom

  The weapon turning, and the sounds of the beam and explosion.

• SN Sunbeam 09

  Updated Sunbeam explosion

• Louis Karim Live Stream (Terminal)

  Early animations for the gun deactivation terminal

• Brandt Wojak Live Stream

  Animations for the "gravity elevator" linking the upper and lower sections of the weapon system.

• Terminal wip

  Deactivation terminal in game

|-| Concept Art=

• 

  Deactivation terminal Concept Art

</tabber> For a more complete gallery, visit Precursor Ground-To-Air Weapon System/Gallery.

Trivia

• The in-development name for the Precursor Ground-To-Air Weapon System was the Precursor Gun, and Precursor Global Defense System.