NEW ZEALAND HYDROGRAPHIC AUTHORITY

TONGA – NIUATOPUTAPU GROUP AND NIUAFO’OU -COASTAL

INDEX:
SATELLITE DERIVED POSITIONS
FISH AGGREGATING DEVICES
SATELLITE DERIVED BATHYMETRY


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.

FISH AGGREGATING DEVICES
Mariners should exercise caution when navigating in these waters as FADs have been moored in outlying deepwater locations. The FADs are unlit: concentrations of fishing vessels may be found in their vicinity.

SATELLITE DERIVED BATHYMETRY
Refer to M_QUAL object for details of depths derived mainly from satellite imagery. Uncharted dangers may exist. For further information see Admiralty publication ‘The Mariners Handbook’.


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