NEW ZEALAND HYDROGRAPHIC AUTHORITY NZ300057 - NZ57 - NORTH ISLAND - EAST COAST - BLACKHEAD POINT TO CASTLEPOINT INDEX: SATELLITE DERIVED POSITIONS VOLUNTARY CODE SATELLITE DERIVED POSITIONS Positions obtained from satellite navigation systems referred to WGS 84 Datum can be plotted directly onto this chart. Caution must be exercised in the transfer of geographical positions to other charts not in terms of WGS 84 Datum. VOLUNTARY CODE Vessels laden with oil or other harmful liquid substances in bulk are to keep at least 5 nautical miles off the land, any charted danger, or any outlying island(s), until reaching the position where alteration is required to make port. END OF FILE