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Mission: Minefield

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This article contains information that no longer applies to the current version of Star Trek Online. The mission has been removed as part of the Romulan Mystery revamp, released with the 5 Year Anniversary Event on January 29, 2015.

In Minefield the player is sent to deploy a new weapon to defend the Federation's transwarp network from Romulan incursion.

Synopsis[edit | edit source]

Incomplete and/or missing data
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Outline[edit | edit source]

Mission Text[edit | edit source]

Starfleet Command is concerned about the safety of our transwarp network. If the Romulans obtain access to it, they could reach almost every world in the Federation in minutes.

There is a scientist at Sierra Outpost II who has a possible solution.

He has developed a new type of mine that reacts to trace minerals that Starfleet uses in its starships that the Romulans and Klingons don't. If a ship has those minerals in its hull, there is no effect.

Without it, the mines detonate. Starfleet Command has concluded that this will adequately secure the transwarp network against the Romulan advance.

Proceed to Sierra Outpost II and meet with S'larin.

He will explain how to deploy the minefield. If it works on one conduit, will use the mines to protect the entire network.

Goal[edit | edit source]

Go to Sierra Outpost II in the Sierra Sector of the Alpha Centauri Sector Block and meet S'larin, a scientist who has developed a way to protect the Federation's transwarp network.

Objectives[edit | edit source]

  • Attack Pattern Sierra
    • Go To Sierra Outpost II
    • Sierra Attack
      • Defeat Attacking Romulan Squadrons (0/3)
      • Beam to Station
  • Precious Cargo
    • Go To Sierra Outpost Station
    • Speak to S'larin
    • Secure the Station
      • Defuse Romulan Spatial Charges (0/3)
      • Tag Crates Containing Experimental Mines (0/3)
    • Return to Ship
  • To Serve and Protect
    • Go To Teneebia System
    • Destroy Large Rubindium Asteroids (0/5)
    • Deploy Mines Near Nav Beacons (0/3)
    • Keep the Transwarp Conduit Clear 3:00 [1]
    • Return to Sector Space
  • Report to Starfleet

NPCs[edit | edit source]

NPC starships[edit | edit source]

Allies[edit | edit source]

Starships[edit | edit source]

Object[edit | edit source]

  • Mine

Gallery[edit | edit source]

Accolades[edit | edit source]

Icon Name Description How to Get Points
Prototype Procurer icon.png Prototype Procurer Secure the Experimental Mines 10
Detour Required icon.png Detour Required Mine the Transwarp Conduit 10


For a walkthrough of this mission, visit the Walkthrough page.

Strategy Notes[edit | edit source]

  1. 3:00 means three minutes (countdown timer)
  • "Sierra Attack" Romulan squadrons are based around a space station on an asteroid in the lower left part of the map.
  • When you are destroying the Rubindium Asteroids you do not have to destroy the little asteroids.

Mission Replay[edit | edit source]

This mission is repeatable through Mission Replay, although the Rewards for completing might be reduced. Items scale to a player appropriate level (Scaling Rewards), as followed:

Level Rank SP Exp Mark <>
26–29 Commander 1552 1338 VI
30–39 Captain 1743 1878 VIII
40–49 Rear Admiral LH & UH 1935 1856 X
50 Vice Admiral 2126 1856 XI

Removed Storyline Episode Missions
Klingon War title=Federation only “War is Good for Business”
Romulan Mystery title=Federation only “Under the Cover of Night”title=Federation only “Minefield”title=Federation only “Divide et Impera”title=Federation only “Saturday's Child”title=Federation only “Preemptive Strike”title=Federation only “Hunting the Hunters”title=Federation only “Project Nightingale”title=Federation only “By Any Means”title=Federation only “Ground Zero”title=Federation only “Ghost Ship”title=Federation only “Friend of My Enemy”title=Federation only “Taris”title=Federation only “Trapped”title=Federation only “S'harien's Swords”
Cardassian Struggle “Venture into Deep Space”“Badlands”title=Federation only “Suspect”title=Federation only “War Games”title=Federation only “Shutdown”“Rapier”“Forging Bonds”“The Long Night”title=Federation only “The Tribble with Klingons”title=Federation only “Tear of the Prophets”“Crack in the Mirror”“The New Link”“Seeds of Dissent”title=Federation only “The Other Side”title=Federation only “Cage of Fire”
Borg Collective “Collateral Damage”“Asset Recovery”“State of Q”
Undine Advance “Assimilation”“The Return”“Fluid Dynamics”“A Light in the Dark”