Moana Roa--could be on her maiden voyage, judging by all the flags, and the fact that it's a publicity photo.
Built: 1960 Grangemouth Dockyard
Owners: NZ Government
Built as a replacement for 'Maui Pomare' for the Auckland-Cook Islands trade. Carried 40 passengers and some refrigerated and general cargo
1974: Taken over by Royal NZ Navy, converted into survey ship, r/n HMNZS Monowai
2003: Broken up at Cadiz.