Corovian Star Repair Shuttle
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
The Corovian Star Repair Shuttle is a barge that survives the final Cylon attack against the Twelve Colonies.
A copy of Sharon Valerii, with the memories of "Caprica Valerii", discovers the crew from this barge when she downloads into a new body, itself in a Raptor (Battlestar Galactica 5). After convincing its crew -- eighty of whom lived outside the ship in EVA suits at a time -- to mutiny, she is able to kill the captain of the barge and convert the ship to an FTL-capable craft by using the FTL drive from her Raptor.
After instructing the crew to build hang rails on the outside of the hull, she is able to bring all the survivors to the The Fleet (Battlestar Galactica 6).