Federation Navy Bastion Module
FactionSiege ModulesFederation Navy Bastion Module — Faction Siege Module (Module) — EVE Online item
An electronic interface designed to augment and enhance a marauder's siege abilities. Through a series of electromagnetic polarity field shifts, the bastion module diverts energy from the ship's propulsion and warp systems to lend additional power to its defensive and offensive capabilities.
This results in a greatly increased rate of defensive self-sustenance and a boost to the ship's overall damage resistances. It also extends the reach of all the vessel's weapon systems and their rate of fire, allowing it to engage targets at farther ranges.
As a side effect of the ionic field created by the bastion module, beneficial remote repair and capacitor transfer effects are ineffective against the fitted ship while the module is active.
In addition, the lack of power to mobility subsystems means that neither standard propulsion nor warp travel are available to the ship, nor is it allowed to dock or jump until out of bastion mode.
Note: Only one bastion module can be fitted to a marauder-class ship. The increased shield boosting and armor repairing gained from the bastion module is subject to a stacking penalty when used with other modules that affect the same attribute on the ship.
Rapid Heavy Missile Launchers are not affected by bastion modules.
This results in a greatly increased rate of defensive self-sustenance and a boost to the ship's overall damage resistances. It also extends the reach of all the vessel's weapon systems and their rate of fire, allowing it to engage targets at farther ranges.
As a side effect of the ionic field created by the bastion module, beneficial remote repair and capacitor transfer effects are ineffective against the fitted ship while the module is active.
In addition, the lack of power to mobility subsystems means that neither standard propulsion nor warp travel are available to the ship, nor is it allowed to dock or jump until out of bastion mode.
Note: Only one bastion module can be fitted to a marauder-class ship. The increased shield boosting and armor repairing gained from the bastion module is subject to a stacking penalty when used with other modules that affect the same attribute on the ship.
Rapid Heavy Missile Launchers are not affected by bastion modules.
Jita Price
1.30b ISK
90d Avg
1.10b ISK
Volume
200 m³
Base Price
5.00m ISK
Jita Market (90d)
Latest Price (2026-08-05)
1.30b ISK
90d Average
1.10b ISK
90d High
1.68b ISK
90d Low
1.25m ISK
Avg Daily Volume
37
Variations(5)
Imperial Navy Bastion Module
Faction
Republic Fleet Bastion Module
Faction
Federation Navy Bastion Module
Faction
Caldari Navy Bastion Module
Faction
Bastion Module I
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4.33bRequired Skills
Attributes
Structure HP999,999
Velocity Modifier-100.0%
Powergrid Usage80 MW
CPU Usage10 tf
Cycle Time60.0s
Armor EM Resist30.0%
Armor Thermal Resist30.0%
Armor Kinetic Resist30.0%
Armor Explosive Resist30.0%
Shield EM Resist30.0%
Shield Thermal Resist30.0%
Shield Kinetic Resist30.0%
Shield Explosive Resist30.0%
Reprocessing Materials
Properties
Type ID94009
Group ID515
Category ID7
Mass1 kg
Volume200 m³
Portion Size1
Meta Level8
Tech Level1
PublishedYes
Recent Prices (Jita)
DatePriceVolume
2026-08-051.30b7
2026-08-041.31b8
2026-08-031.42b27
2026-08-021.47b9
2026-08-011.45b41
2026-07-311.43b9
2026-07-301.45b20
2026-07-291.48b23
2026-07-281.52b18
2026-07-271.40b51
2026-07-261.30b28
2026-07-251.16b28
2026-07-241.22b20
2026-07-231.22b18
2026-07-221.22b51
2026-07-211.17b21
2026-07-201.18b26
2026-07-191.21b15
2026-07-181.23b7
2026-07-171.20b20
2026-07-161.18b20
2026-07-151.18b14
2026-07-141.14b22
2026-07-131.12b15
2026-07-121.11b24
2026-07-111.10b20
2026-07-101.10b12
2026-07-091.10b18
2026-07-081.11b13
2026-07-071.10b8