Off-Topic

UNSC Andraste Production information Class UNSC Frigate Technical specifications Slipspace Drive Shaw-Fujikawa Translight Engine Slipspace velocity N/A Shielding None Hull 60 Centimeters of Titanium-A Armor Armament MAC Gun (1) Archer Missile Pods (30) with 30 missiles each 8 point defense guns 3 Shiva nuclear warheads Usage Affiliation UNSC Navy

[Source]

The UNSC Andraste is UNSC Frigate shown in the art novel Art of Halo 3.  The UNSC Andraste was the therd  frigate attacking the Ark in the level, 'The Storm' 's ending cutscene.  After the failed attack the Andraste took off  to an unknown location and did not go though the portal, but stayed on Earth         

Trivia

   the UNSC Andraste  is still unknown, only showing its self in the attack, its rummored it took part in the space battle above Reach and was one of the 3 ships that servived the attack. master sargant Haseo served on this ship as an ODST, but was KIA back on Reach, his wife Ayana is the UNSC Andraste's  piolet.       
 
 
PS i looked in to it in the halo history there were only 3 or 4 ships that servived the battle, piller of auttom as one of them!