Two boats sent out to perform a SAR exercise that involved people in the water (buoys) out near Mana Island. The master of Trust Porirua Rescue was tasked with setting up an initial search pattern at a specified Datum.
Later, Pelorus also joined the search as a 'civilian' vessel and was tasked by the master on TPR to assist with the Expanding Box and Creeping Line Ahead search patterns.
Links:
[1] http://coastguardmana.org.nz/users/mark-presling