List of missing or abandoned ships
From Halopedia, the Halo wiki
| Ship | Years missing | Last contact | Cause of disappearance | Crew complement | Notable personnel | Fate |
|---|---|---|---|---|---|---|
| Argent Moon | 1.5 years | March 17, 2557 | Outbreak of biological agent, steered away from habitable systems by shipboard AI. | Unknown | Rooker | Intercepted and destroyed by Blue Team. |
| CMA Argo | 0.46 years | April 20, 2525, Harvest | Destroyed during first contact with the Covenant. | Unknown | Destroyed by Rapid Conversion. Confirmed by Battle Group 4. | |
| UNSC Forward Unto Dawn (aft-section) | 4.61 years | Dec. 11, 2552, The Ark | Severed in half by closing portal. | 2 | John-117 | Crashed on Requiem July 21, 2557. Contact was established with UNSC Infinity. |
| UNSC Rubicon | 5.81 years | Aug. 10, 2554, The Ark | Hijacked by 343 Guilty Spark. | Unknown | Bobby Kodiak | Destroyed after crashing into Geranos-a. All crew killed. |
| UNSC Spirit of Fire | 29.31 years | Feb. 10, 2531, Arcadia | Jumped to unknown region of space pursuing Dr. Ellen Anders. Slipspace engine sacrificed to prevent Covenant from accessing Forerunner warfleet. | 11,350 | James Cutter | Last seen fighting the Banished at The Ark |
