Caldari Navy Bastion Module

Faction Siege Modules

Caldari 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.
Jita Price1.52bISK
90d Avg1.53bISK
Volume200m³
Base Price5.00mISK
Regional market

All Regions price history

Daily traded price, corrected when EVERef republishes historical data.

1.82b 1.74b 1.66b 1.57b 1.49b Oct 10, 2026 — 13 units traded Oct 11, 2026 — 21 units traded Oct 12, 2026 — 6 units traded Oct 13, 2026 — 7 units traded Oct 14, 2026 — 9 units traded Oct 15, 2026 — 8 units traded Oct 16, 2026 — 20 units traded Oct 17, 2026 — 14 units traded Oct 18, 2026 — 10 units traded Oct 19, 2026 — 16 units traded Oct 20, 2026 — 6 units traded Oct 21, 2026 — 26 units traded Oct 22, 2026 — 6 units traded Oct 23, 2026 — 4 units traded Oct 24, 2026 — 26 units traded Oct 25, 2026 — 20 units traded Oct 26, 2026 — 12 units traded Oct 27, 2026 — 17 units traded Oct 28, 2026 — 18 units traded Oct 29, 2026 — 10 units traded Oct 30, 2026 — 11 units traded Oct 31, 2026 — 18 units traded Nov 1, 2026 — 10 units traded Nov 2, 2026 — 13 units traded Nov 3, 2026 — 9 units traded Nov 4, 2026 — 6 units traded Nov 5, 2026 — 3 units traded Nov 6, 2026 — 10 units traded Nov 7, 2026 — 7 units traded Oct 10, 2026Nov 7, 2026
Average priceUnits traded
Order security
Snapshot Nov 8, 2026, 4:30 PM

Sellers (53)

Location
11,642,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 21h
11,643,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 21h
11,648,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 5h
11,649,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 19h
11,653,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 17h
51,660,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 14h
11,661,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 13h
11,677,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)186d 0h
11,698,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 16h
11,699,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 19h
11,699,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 19h
11,700,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 16h
11,704,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 16h
11,705,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 16h
11,707,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 13h
11,708,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 11h
11,709,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 11h
11,712,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)120d 14h
11,715,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)180d 8h
11,717,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)179d 21h
11,718,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)175d 18h
11,733,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)115d 8h
41,743,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)173d 2h
11,746,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)173d 0h
51,747,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)17d 13h
21,749,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)172d 10h
11,750,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)15d 18h
241,750,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)121d 17h
11,750,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)13d 8h
11,798,000,000Amarr VIII - Emperor Family Academy (0.9)189d 14h
11,799,000,000Amarr VIII - Emperor Family Academy (0.9)189d 14h
11,801,000,000Amarr VIII - Emperor Family Academy (0.9)189d 2h
11,832,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 22h
11,833,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)189d 13h
21,834,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)15d 17h
11,834,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)189d 13h
11,838,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)188d 11h
11,840,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)187d 9h
51,842,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)15d 14h
11,842,000,000Amarr VIII - Emperor Family Academy (0.9)188d 16h
11,843,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)15d 13h
101,847,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)15d 12h
11,850,000,000Amarr VIII - Emperor Family Academy (0.9)186d 11h
11,864,000,000Amarr VIII - Emperor Family Academy (0.9)183d 19h
11,885,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)126d 3h
11,940,000,000Hek VIII - Moon 12 - Boundless Creation Factory (0.8)189d 9h
11,941,000,000Hek VIII - Moon 12 - Boundless Creation Factory (0.8)189d 7h
12,019,000,000Amarr VIII - Emperor Family Academy (0.9)166d 17h
12,213,000,000Amarr VIII - Emperor Family Academy (0.9)150d 0h
12,217,000,000Amarr VIII - Emperor Family Academy (0.9)148d 7h
12,237,000,000Amarr VIII - Emperor Family Academy (0.9)141d 23h
12,400,000,000Rens VI - Moon 8 - Brutor Tribe Treasury (0.9)172d 11h
13,100,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)121d 8h

Buyers (33)

Location
11,442,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)189d 19h
11,441,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)189d 15h
11,439,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)189d 3h
41,429,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)15d 6h
21,420,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)179d 7h
21,392,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)167d 8h
11,385,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)159d 17h
11,357,000,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)186d 4h
11,356,000,000Amarr VIII - Emperor Family Academy (0.9)183d 19h
11,300,000,000Hek - 0% MARKET Fuelled for 12m (0.8)121d 9h
11,219,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)185d 13h
11,131,000,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)145d 14h
21,100,000,000Hek - IChooseYou Market and Industry (0.8)18d 2h
21,100,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)178d 2h
11,052,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)144d 0h
1922,000,000Amarr VIII - Emperor Family Academy (0.9)185d 15h
1921,000,000Amarr VIII - Emperor Family Academy (0.9)11d 4h
1600,300,0004-HWWF (0.0)154d 15h
25,067,000Fihrneh VI - Moon 1 - Royal Amarr Institute School (0.1)175d 4h
103,500,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)180d 12h
33,333,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)175d 21h
202,279,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)156d 19h
32,274,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)156d 2h
52,260,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)147d 17h
11,750,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)188d 14h
81.67Aldranette IX - Moon 1 - FedMart Warehouse (0.4)14d 13h
100,0001Duripant VII - AIR Laboratories School (0.9)14d 4h
11Perimeter - 0.0% Neutral States Market HQ (0.9)143d 18h
11Perimeter - 0.0% Neutral States Market HQ (0.9)174d 0h
1001D87E-A VII - Moon 6 - Guardian Angels Assembly Plant (0.0)172d 15h
100,0001Amsen VI - AIR Laboratories School (0.9)177d 3h
100,0000.01Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)150d 0h
9880.01Ammold V - Republic Military School School (0.9)189d 6h