https://www.rsm.govt.nz/
Type: Posts; User: gadgetman
https://www.rsm.govt.nz/
Anyone can use VHF Marine Radio for emergency calls. Anything else requires a licence obtained through Coastguard.
That should be 5 Watt maximum as that is the limit for units in NZ.
If you import you need to make sure it is set up for the Aus/NZ frequencies.