VESSEL REPORTING
For details of the Nieuwe Waterweg Vessel Traffic Service see the Netherlands 
Coast Pilot (HP1) or Admiralty List of Radio Signals.

DEPTHS AND AIDS TO NAVIGATION
The channel depths are liable to frequent change and the buoys are moved accordingly. 
Charted details cannot always be relied upon.

DEPTHS IN HARBOURS
Depths in harbours and along quays are maintained by dredging. 
For the latest information consult the pilot.

PORT SIGNPOSTING SYSTEM
Berth numbers e.g. 6001-6105 relate to the Port Signposting system. 
These numbers correspond to the numbering of the waterfront. 
The port numbers are indicated in black figures on yellow boards.

TIDAL STREAMS
Attention is drawn to the strong tidal streams in these waters.
For tidal streams and tidal information see: HP 33 Tidal heights
and streams for coastal waters of the Netherlands and adjacent waters
and HP 33D-NLTides published by the Netherlands Hydrographer.