Federation Navy Bastion Module

Faction Siege Modules

Federation 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 Price1.87bISK
90d Avg1.78bISK
Volume200m³
Base Price5.00mISK
Regional market

All Regions price history

Daily traded price, corrected when EVERef republishes historical data.

2.02b 1.94b 1.86b 1.77b 1.69b Oct 10, 2026 — 27 units traded Oct 11, 2026 — 40 units traded Oct 12, 2026 — 13 units traded Oct 13, 2026 — 46 units traded Oct 14, 2026 — 21 units traded Oct 15, 2026 — 9 units traded Oct 16, 2026 — 18 units traded Oct 17, 2026 — 20 units traded Oct 18, 2026 — 9 units traded Oct 19, 2026 — 15 units traded Oct 20, 2026 — 7 units traded Oct 21, 2026 — 17 units traded Oct 22, 2026 — 13 units traded Oct 23, 2026 — 16 units traded Oct 24, 2026 — 17 units traded Oct 25, 2026 — 16 units traded Oct 26, 2026 — 24 units traded Oct 27, 2026 — 22 units traded Oct 28, 2026 — 29 units traded Oct 29, 2026 — 27 units traded Oct 30, 2026 — 33 units traded Oct 31, 2026 — 26 units traded Nov 1, 2026 — 36 units traded Nov 2, 2026 — 19 units traded Nov 3, 2026 — 15 units traded Nov 4, 2026 — 23 units traded Nov 5, 2026 — 12 units traded Nov 6, 2026 — 6 units traded Nov 7, 2026 — 8 units traded Oct 10, 2026Nov 7, 2026
Average priceUnits traded
Order security
Snapshot Nov 8, 2026, 4:30 PM

Sellers (44)

Location
11,876,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 22h
11,880,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 21h
51,887,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 18h
11,888,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 10h
21,888,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)189d 16h
11,898,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 23h
21,899,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 14h
11,900,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 12h
11,910,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 13h
31,912,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 10h
11,913,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 9h
31,914,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)188d 7h
11,922,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)130d 4h
11,949,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)168d 15h
11,950,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)187d 3h
41,951,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)128d 23h
41,957,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)128d 1h
41,972,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)125d 14h
11,979,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)168d 15h
11,979,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)187d 20h
12,000,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)140d 2h
12,096,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)182d 14h
12,148,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)189d 14h
12,149,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)187d 8h
12,150,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)14d 0h
12,260,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)132d 18h
12,300,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)123d 13h
12,340,000,000Amarr VIII - Emperor Family Academy (0.9)189d 15h
12,344,000,000Amarr VIII - Emperor Family Academy (0.9)189d 12h
12,345,000,000Amarr VIII - Emperor Family Academy (0.9)189d 11h
12,347,000,000Amarr VIII - Emperor Family Academy (0.9)189d 2h
12,356,000,000Amarr VIII - Emperor Family Academy (0.9)185d 19h
12,400,000,000Rens VI - Moon 8 - Brutor Tribe Treasury (0.9)182d 8h
12,400,000,000Hek VIII - Moon 12 - Boundless Creation Factory (0.8)184d 9h
22,500,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)185d 16h
12,655,000,000Amarr VIII - Emperor Family Academy (0.9)184d 1h
22,659,000,000Amarr VIII - Emperor Family Academy (0.9)183d 14h
12,678,000,000Amarr VIII - Emperor Family Academy (0.9)180d 4h
12,680,000,000Amarr VIII - Emperor Family Academy (0.9)180d 3h
12,694,000,000Amarr VIII - Emperor Family Academy (0.9)177d 7h
12,694,000,000Amarr VIII - Emperor Family Academy (0.9)177d 7h
12,695,000,000Amarr VIII - Emperor Family Academy (0.9)170d 23h
12,697,000,000Amarr VIII - Emperor Family Academy (0.9)170d 19h
12,815,000,000Amarr VIII - Emperor Family Academy (0.9)136d 5h

Buyers (36)

Location
11,715,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)185d 6h
11,621,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)16d 21h
21,620,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)178d 2h
11,613,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)177d 5h
11,600,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)178d 20h
11,555,000,000Perimeter - 0.0% Neutral States Market HQ (0.9)115d 20h
11,531,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)174d 15h
11,528,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)174d 11h
11,505,000,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)188d 16h
11,504,000,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)187d 23h
11,502,000,000Amarr VIII - Emperor Family Academy (0.9)181d 2h
11,450,000,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)136d 4h
11,286,000,000Eglennaert I - Moon 1 - Federation Navy Assembly Plant (0.8)189d 22h
11,285,000,000Botane - Cheapest Market BE SMART (0.9)189d 17h
11,283,000,000Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)185d 13h
11,041,000,000Perimeter - Tranquility Trading Tower (0.9)134d 10h
11,001,000,0004-HWWF (0.0)183d 1h
1939,700,000Amarr VIII - Emperor Family Academy (0.9)185d 15h
1938,900,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)183d 21h
1937,400,000Ashab - Amarr Mk2 CHEAPEST Market (0.9)145d 13h
1800,300,000Botane - Cheapest Market BE SMART (0.9)13d 15h
317,780,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)175d 21h
110,620,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)171d 5h
1010,610,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)167d 10h
210,370,000Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)156d 2h
25,067,000Fihrneh VI - Moon 1 - Royal Amarr Institute School (0.1)175d 4h
15,001,000Azer - IChooseYou Market and Industry (0.7)182d 2h
15,000,000Villore - BLACK MARTKET II (0.9)120d 23h
1002Dodixie IX - Moon 20 - Federation Navy Assembly Plant (0.9)119d 6h
81.67Aldranette IX - Moon 1 - FedMart Warehouse (0.4)14d 13h
100,0001Duripant VII - AIR Laboratories School (0.9)14d 4h
100,0001Amsen VI - AIR Laboratories School (0.9)177d 3h
11Perimeter - 0.0% Neutral States Market HQ (0.9)189d 15h
11Perimeter - 0.0% Neutral States Market HQ (0.9)189d 15h
11Perimeter - 0.0% Neutral States Market HQ (0.9)189d 15h
100,0000.01Jita IV - Moon 4 - Caldari Navy Assembly Plant (0.9)150d 0h