The USS Rockford was a Baton Rouge Class Starship that was declared LOST by Starfleet in 2238 after it disappeared as it was exploring the Dosiania Parasec. The Rockford and it's crew was actually captured by a pirate race in a pocket of space that emerges every so often where they prey on shipping. This pocket of space has a slower time intervals, so when it was encountered in 2374 by the USS Shiloh, the crew was still alive.