PORT CHALMERS - NZ

From my set of photos the best fit for the H class seems to Hurunui, but the only one I can confidently rule out is Hinakura (even stanchions). The Blue Star is either English or Scottish I think

With that radar mast, probably Haparangi.

The Blue Star ship has 7 holds, so is one of Auckland, Wellington, Adelaide or Tasmania Star.
Cheers, Brent

The Blue Star ship is one of the twin screw pair, Adelaide or Wellington, looks to be Wellington Star. Auckland and Tasmania, being single screw, had a different shaped stern.