Imperial Navy Bastion Module

Faction Siege Modules

Imperial 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 Price1.31bISK
90d Avg1.25bISK
Volume200m³
Base Price5.00mISK
Regional market

All Regions price history

Daily traded price, corrected when EVERef republishes historical data.

1.42b 1.35b 1.29b 1.23b 1.17b Oct 10, 2026 — 15 units traded Oct 11, 2026 — 7 units traded Oct 12, 2026 — 5 units traded Oct 13, 2026 — 9 units traded Oct 14, 2026 — 5 units traded Oct 15, 2026 — 5 units traded Oct 16, 2026 — 4 units traded Oct 17, 2026 — 10 units traded Oct 18, 2026 — 3 units traded Oct 19, 2026 — 2 units traded Oct 20, 2026 — 3 units traded Oct 21, 2026 — 5 units traded Oct 22, 2026 — 7 units traded Oct 23, 2026 — 9 units traded Oct 24, 2026 — 6 units traded Oct 25, 2026 — 15 units traded Oct 26, 2026 — 6 units traded Oct 27, 2026 — 4 units traded Oct 28, 2026 — 6 units traded Oct 29, 2026 — 9 units traded Oct 30, 2026 — 10 units traded Oct 31, 2026 — 11 units traded Nov 1, 2026 — 7 units traded Nov 2, 2026 — 5 units traded Nov 3, 2026 — 3 units traded Nov 4, 2026 — 4 units traded Nov 5, 2026 — 7 units traded Nov 6, 2026 — 9 units traded Nov 7, 2026 — 5 units traded Oct 10, 2026Nov 7, 2026
Average priceUnits traded
Order security
Snapshot Nov 8, 2026, 7:00 PM

Sellers (38)

Location
11,250,000,000Boystin - Cayman (0.5)150d 11h
11,381,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)121d 23h
11,381,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)121d 23h
11,383,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)169d 22h
11,388,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)169d 1h
11,390,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)18d 22h
11,400,000,000Amarr VIII - Emperor Family Academy (0.9)189d 23h
21,401,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)168d 14h
11,420,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)168d 7h
41,426,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)167d 6h
11,431,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)166d 9h
11,435,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)163d 19h
11,436,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)136d 16h
11,444,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)127d 14h
11,445,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)127d 12h
11,465,000,000Amarr VIII - Emperor Family Academy (0.9)188d 16h
21,467,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)121d 5h
21,468,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)121d 5h
21,469,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)121d 5h
11,469,000,000Amarr VIII - Emperor Family Academy (0.9)188d 2h
11,480,000,000Amarr VIII - Emperor Family Academy (0.9)183d 4h
11,481,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)119d 19h
11,486,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)118d 21h
11,490,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)184d 6h
11,493,000,000Amarr VIII - Emperor Family Academy (0.9)185d 7h
11,494,000,000Amarr VIII - Emperor Family Academy (0.9)168d 14h
11,498,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)18d 1h
21,500,000,000Amarr VIII - Emperor Family Academy (0.9)160d 3h
21,500,000,000Amarr VIII - Emperor Family Academy (0.9)162d 6h
11,550,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)116d 9h
11,590,000,000Rens VI - Moon 8 - Brutor Tribe Treasury (0.9)155d 19h
11,599,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)148d 0h
11,634,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)169d 1h
11,635,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)167d 0h
11,641,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)116d 3h
11,646,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)17d 15h
21,749,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)138d 5h
101,750,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)121d 15h

Buyers (30)

Location
11,203,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)16d 19h
11,202,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)189d 13h
51,201,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)167d 6h
31,106,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)163d 16h
11,026,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)159d 15h
11,011,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)149d 13h
11,007,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)154d 17h
1988,100,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)189d 23h
1988,000,000Amarr VIII - Emperor Family Academy (0.9)187d 20h
1985,500,000Amarr VIII - Emperor Family Academy (0.9)184d 21h
1985,200,000Amarr VIII - Emperor Family Academy (0.9)183d 16h
1850,900,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)159d 23h
1805,000,000Amarr VIII - Emperor Family Academy (0.9)157d 6h
1803,200,000Amarr VIII - Emperor Family Academy (0.9)155d 13h
1200,900,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)161d 0h
2200,700,000Amarr VIII - Emperor Family Academy (0.9)155d 13h
1200,600,000Amarr VIII - Emperor Family Academy (0.9)15d 13h
1133,500,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)175d 19h
399,890,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)128d 18h
35,670,000Yiratal VIII - Moon 4 - The Scope Publisher (0.0)174d 8h
31,034,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)156d 0h
16,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)184d 10h
101,385Hek VIII - Moon 12 - Boundless Creation Factory (0.8)177d 2h
81.67Aldranette IX - Moon 1 - FedMart Warehouse (0.4)14d 10h
100,0001Duripant VII - AIR Laboratories School (0.9)14d 2h
11Perimeter - 0.0% Neutral States Market HQ (0.9)165d 13h
100,0001Amsen VI - AIR Laboratories School (0.9)177d 1h
11Perimeter - 0.0% Neutral States Market HQ (0.9)189d 13h
11Perimeter - 0.0% Neutral States Market HQ (0.9)189d 13h
100,0000.01Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)149d 21h