Callout was via police pager. Directed to location by police unit on scene. Communications with police unit with updates.
Links:
[1] http://www.coastguardmana.org.nz/users/mark-presling
[2] http://www.coastguardmana.org.nz/users/trevor-farmer
[3] http://www.coastguardmana.org.nz/crv/crv-trust-porirua-rescue