USS Ptolemy (NCC-3801)

The USS Ptolemy is the first ship of her class. Launched in the mid 23rd century, it was the chief transport for the Federation. In 2269 the Ptolemy was presumed lost in the Delta Triangle trying to avoid an Ion storm. In 2389, the USS Crusader (NCC-51492) found the Ptolemy and would bring her back to Starbase 140 intact. The crew was lost to a Zentradi cruiser that abducted them in a spatial anomaly inside the Delta Triangle.(Star Trek: Generation Fleet)