UNSC Rubicon

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UNSC Rubicon
Production information

Slipspace drive:



Remote contact teams, including Broadside and RCT-06, and ONI science teams

Service information


December 2553[1]

Last sighted:

August 21, 2554[2]

Noteworthy crewmembers:

Bobby Kodiak



UNSC Rubicon is a ship in service with the Office of Naval Intelligence, commissioned for the first manned mission to the Ark following the Battle of Installation 00.[3][1] The shipboard AI was Curator.[2]


Rubicon was commissioned in December 2553 in response to the loss of automated probes sent to Installation 00 earlier that year.[1] The ship was dispatched to the Ark from Luna, carrying specialist remote contact teams, ONI scientific personnel, and an array of probes. Due to the damage dealt to the Ark's life support systems, the RCTs were forced to brave extremely hostile conditions on the surface in search of the signal's origin. Contact was lost with all teams after eight days; only RCT-06 returned, having sustained heavy casualties. However, they succeeded at recovering the beacon's source - the remains of 343 Guilty Spark, the former monitor of Halo Installation 04.[3]

The science team questioned the damaged monitor on his origins, who obliged the humans due to their authority as Reclaimers. Over the course of the interrogation, Spark breached the Rubicon's firewall several times, much to the team's dismay. Spark powered down after concluding his story and his casing was subsequently ejected into space; unknown to the crew he had already transferred his consciousness to the shipboard computers. After subduing the onboard AI and taking control of the ship, he explained to the crew that he was going to resume his quest to find the Lifeshaper and to restore his old friends, Riser and Vinnevra, back to life. Asserting that the Lifeshaper was still alive, he put the crew to sleep and had the Rubicon proceed to her location.[4][2]

Search-and-rescue teams were sent to the area after contact with Rubicon was lost, but they failed to find any trace of the ship.[3] Rubicon was formally declared lost on July 2, 2557.[5]


  • The ship is named after the Rubicon, a river in Italy known as the site where Julius Caesar uttered the famous phrase "alea iacta est" or "the die is cast" as he and his army crossed the river. Due to the historical significance of the event, "Rubicon" has become an idiom for a point of no return. Given this meaning, the name of the Rubicon may be a reference to another ONI vessel, the stealth cruiser UNSC Point of No Return.
  • According to Halo: Primordium, the ship (which goes unnamed in the novel) and its accompanying task force were involved in some form of fleet action toward the end of the interrogation of 343 Guilty Spark.[6] The nature of this engagement is not elaborated upon in either the novel or the fourth Eleventh Hour report which further details the fictional context of the novel.

List of appearances[edit]


  1. ^ a b c Halo: Hunters in the Dark, Chapter 2
  2. ^ a b c Halo Mythos
  3. ^ a b c Eleventh Hour reports, Report 4: Provenance
  4. ^ Halo: Primordium
  5. ^ Halo Waypoint: Catalog Interaction (post 2969311)
  6. ^ Halo: Primordium, page 376 ("Look at this... Ship's veering from main task force. We're moving away from all the action!")