NEW ZEALAND HYDROGRAPHIC AUTHORITY TONGA – VAVA’U INDEX: SATELLITE DERIVED POSITIONS CORAL HEADS AIDS TO NAVIGATION 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. CORAL HEADS Due to the complexity of the coral bathymetry, depths shoaler than those charted may exist away from the main channels. AIDS TO NAVIGATION The aids to navigation shown on this chart are not to be relied upon. 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’. END OF FILE