KiwiRail has ordered two brand-new, bigger, hybrid ferries. (see Ferry Shipping News 1 July 2021) An outstanding public website explains all details and answers a lot of questions. Kiwirail also started a consultation for the upgrading of the Wellington / Kaiwharawhara Interislander ferry terminal....
https://ferryshippingnews.com/kiwirail-outstanding-website-explains-the-new-ship-and-port-projects/