The Edwin Fox is the ninth-oldest surviving ship in the world and one of the very few remaining Crimean-era timber merchantmen anywhere. She is half-rebuilt in a covered dry dock at the Picton wharf, presented as a working preservation project rather than a polished museum — most of the hull is still rotten, the frames are exposed, and you walk around her on scaffolding while the conservation team works.
The visit takes about an hour and includes a small museum covering the ship's history. The exposed bones of a Victorian merchantman are more impressive than any polished replica would be — you can see how the entire ship was hand-built from massive curved teak timbers shaped on land before assembly. Admission around NZ$20. A worthwhile, slightly melancholy stop right next to the ferry terminal.