Thanks for providing the context and some facts.Speaking as someone who is very senior in that industry I can honestly tell you that there is no plan to replace either the ferries or the port infrastructure (which is falling into the sea).
The ferry contract was a brilliant deal for the country but KiwiRail fucked up the port infrastructure pricing royally - refer my report to the minister 2020.
Camcelling the projects is gonna costs about $200m.