Republic Fleet Bastion Module

Republic Fleet Bastion Module

FactionSiege Modules

Republic Fleet 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.
Jita Price
1.04b ISK
90d Avg
1.03b ISK
Volume
200
Base Price
5.00m ISK
Jita Market (90d)
Latest Price (2026-06-20)
1.04b ISK
90d Average
1.03b ISK
90d High
2.20b ISK
90d Low
808.50m ISK
Avg Daily Volume
16
Attributes
Structure HP999,999
Velocity Modifier-100.0%
Powergrid Usage80 MW
CPU Usage10 tf
Cycle Time60.0s
Armor EM Resist40.0%
Armor Thermal Resist40.0%
Armor Kinetic Resist40.0%
Armor Explosive Resist40.0%
Shield EM Resist40.0%
Shield Thermal Resist40.0%
Shield Kinetic Resist40.0%
Shield Explosive Resist40.0%
Properties
Type ID94008
Group ID515
Category ID7
Mass1 kg
Volume200 m³
Portion Size1
Meta Level8
Tech Level1
PublishedYes
Recent Prices (Jita)
DatePriceVolume
2026-06-201.04b12
2026-06-19997.00m3
2026-06-181.03b7
2026-06-17984.75m4
2026-06-16950.50m4
2026-06-15913.60m10
2026-06-141.06b5
2026-06-131.06b7
2026-06-121.14b17
2026-06-111.02b18
2026-06-10932.16m14
2026-06-09930.72m10
2026-06-08890.35m2
2026-06-07936.07m21
2026-06-06897.37m6
2026-06-05829.34m9
2026-06-04896.91m17
2026-06-03892.64m36
2026-06-02866.52m47
2026-06-01867.76m64
2026-05-31876.71m52
2026-05-30872.24m63
2026-05-29892.94m42
2026-05-28905.60m52
2026-05-27977.73m30
2026-05-26921.78m21
2026-05-25936.05m6
2026-05-24933.02m25
2026-05-23905.66m5
2026-05-22926.18m5