The Starfleet vessel that was due to carry Wesley Crusher to Starfleet Academy in 2366, and which he deliberately missed in order to help rescue Riker and the Trois from the Ferengi.
The USS Bradbury is mentioned in the Next Generation episode Ménage à Troi. Wesley Crusher has at last passed the Academy's written entrance examinations and is booked to leave the Enterprise-D on the Bradbury, which will take him to Earth for his oral exams.
While he is on his way to the transporter room, he realises that an odd pattern of interference in a Ferengi subspace signal is actually a message from Riker, who has been kidnapped with Deanna and Lwaxana Troi by DaiMon Tog. He turns back to the bridge and the Bradbury leaves without him.
Missing the ship costs him a year's entry to the Academy. Picard responds by granting him a field promotion to full ensign, and Wesley wears a standard uniform from then on.