We stopped round for a few barbequed chops and had a good look around 'Port'. Along with some entertainment for the kiddies, there was a freighter (Maersk Dunafare) dockside that allowed a true appreciation of their size (45,803 gross tonnage) and an interesting exhibit on loan from the museum detailing the first frozen meat shipment from New Zealand to England. The day actually marked the 125th Anniversary of that voyage. A historic day indeed for the 2 Billion dollar industry (2006 stats).
This is the Tunnel Hotel (aka Port Chalmers Hotel) and yes, that is a train tunnel. A great location for the train aficionado but we didn't stay for any longer than a photo as they don't serve my favourite beer. But they do at the Carey's Bay Pub, not a kilometer along the road.
In the photo on the link, the CBH is the big stone building closest to the water.
Carey's Bay is a great historic hotel that has recently been lovingly restored retaining much of its original character. Stop in for lunch, a few pints of Bookbinder in their covered courtyard or sunny front section, and drink in the view as well.