NEW ZEALAND HYDROGRAPHIC AUTHORITY

NZ7142 - SOUTH ISLAND - WEST COAST - GREYMOUTH HARBOUR AND APPROACHES

INDEX:
SATELLITE DERIVED POSITIONS
DREDGING


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.

DREDGING
Dredging takes place during daylight hours from time to time in the river and Erua Moana.  Mariners are warned to give the dredge a wide berth due to outlying anchors and cables.


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