MARINE FARMS Marine farms exist within the areas indicated. They may not all be shown individually and their positions may change frequently. Marine farms may be marked by lit or unlit buoys or beacons. Mariners are advised to avoid these structures and their associated moorings. DEPTHS AND AIDS TO NAVIGATION Depths in the main channel of the Westerschelde are maintained by dredging to 14.5m LAT. The secondary channels and depths shown on this chart are subject to frequent change. The buoyage and other aids to navigation are adjusted accordingly. For the latest information see Notices to Mariners or consult the pilotage authorities. VESSEL REPORTING For details of the Westerschelde Vessel Traffic Services Scheldemond (VTS SM) including Traffic Area Gent-Terneuzen, see the Netherlands Coast Pilot (HP1) or Admiralty List of Radio Signals. WESTERSCHELDE SHIPPING REGULATIONS (WSR) In the Westerschelde and approaches, traffic regulations'The Westerschelde Shipping Regulations 1990' are in force. For details see the Netherlands Coast Pilot (HP1) or Admiralty Sailing Directions. SUBMARINE CABLES AND PIPELINES Mariners are advised not to anchor or trawl in the vicinity of submarine cables and pipelines. Pipelines are not always buried and their presence may significantly reduce the charted depth. They may also span seabed undulations and cause fishing gear to become irrecoverably snagged, putting a vessel in severe danger. 'FIETSPAD' SMALL CRAFT CHANNEL Small crafts are urgently requested to use the channel parallel to the main fairway, named 'Fietspad' and marked with yellow buoys. Ask the local VTS for the least sounded depth. 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. RESTRICTIONS MOTORBOATS AND WATERSKIING In these waters restrictions for sailing with fast motorboats and waterskiing are in force.