Ballast Flora

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Ballast Flora are a parasitic organism that take root in the ballast Pumps and quickly grow into the rest of the submarine. A ballast flora infection has chance of taking root when pumping water in and the submarine is in a colony of ballast flora spores.


There is a 5% chance of infection every second while the submarine is inside spore area & the ballasts are pumping in water. The flora spores are faintly visible on sonar.

Ballast flora hijack the submarine's hatches, doors, and pumps to protect itself and harm players. Growing and potentially draining power, until attacked.

Installation Effect
Pumps If powered, pumps in water when attacked.
Doors/hatch Close the door/hatch when attacked.
Batteries/Junction box Adds 100-700 extra load per box/drain per battery & store power.

Uses stored power to accelerate growth when attacked.

Walls Releases invisible acidic gas that deals Affliction Burn.png Burn damage to humans.

Ballast flora are immune to damage while submerged.


Explosives, flamethrowers, plasma cutters, and Fire damage ballast flora. Destroying the root, located at the pump from which the infection originates, will destroy the rest of the plant.

The ballast flora may defend itself by releasing burn-damage causing gas, as well as by controlling pumps, doors, and hatches. Cutting power to the pump will prevent control.

Fragmentation grenades will kill the root in two hits – wiring two detonators filled with them to a button may be a good option to deal with ballast flora. This option is quicker than using flamethrowers or plasma cutters, and deals little damage to surrounding walls.

Minimal Hull Damage Methods of Damaging Ballast Flora
Method Damage Notes
Frag Grenade.pngFrag Grenade 120 Damages Installations.
40mm Grenade.png40mm Grenade 110 Damages Installations
Incendium Grenade.pngIncendium Grenade 50 Starts a Fire, damages Installations.
Flamer.pngFlamer 20/s Can set a Fire
Plasma Cutter.pngPlasma Cutter 5/s
High Hull Damage Methods To Damage Ballast Flora
Item Damage Notes
UEX.pngUEX 110
C-4 Block.pngC-4 Block 110
IC-4 Block.pngIC-4 Block 110 Starts a Fire.
Compound N.pngCompound N 60
Volatile Compound N.pngVolatile Compound N 60
Nitroglycerin.pngNitroglycerin 60


  • Ballast Flora was introduced in
  • According to roadmap[1], can be killed with chemicals; however, this is not yet implemented as of v0.11.0.10.