On the water

Power lines and submarine cables cross many NSW waterways, posing a potential threat to boaters and yachties. You don't even need to touch power lines to compromise safety. That’s why it is so important to know what to look for when enjoying yourself on the water.


  • Know the height of your vessel and obey the overhead crossing warning signs.
  • Be mindful of overhead power lines when transporting, launching and retrieving boats.
  • Clearance heights may vary according to water levels. Be aware of king tides and floods.
  • Power lines have the potential to sag during hot weather, reducing clearance below the power lines.
  • Do not drop anchor within 200 metres of submarine cables.
  • Monitor the weather. Yachts and boats may be blown off course into overhead power lines and within 200m of submarine cables.