One of my finds while ass deep in blogs last night was this kickass looking Forge Class Mobile Repair Station.
What I found really cool is that it's big enough for a ship model to actually fit inside.
Cradle from the first Halo novel, The Fall of Reach. It plays a small, but critical role during the Battle of Sigma Octanus IV, where it was sacrificed to protect an assembled UNSC fleet from the opposing Covenant fleet's barrage of plasma torpedoes.
A mobile repair facility actually makes a lot of sense. If you have a fleet heading off to battle and you expect them to get messed up fighting it, then you would want repair facilities at hand to patch them up. Alternatively, if a warship suffers some kind of damage or systems failure out in the middle of nowhere and can't make it to a station, then you can just send one of these out to either repair in the field or to haul it back home.
If you're interested, you can buy the Forge Class Mobile Repair Facility from RavenstarStudios.