National Directory of Waters

• All Water activities on Class C Waters except Powerboating are approved by a Leader provided they follow the standards contained in the factsheet Class C Waters available from Headquarters
  

• Any Rivers, Lakes or Reservoirs not affected by tidal flow

Tidal

• The tidal parts of any Essex Rivers
• The River Thames and the Coastal waters off the Essex shore inside a line drawn from ½ mile from High Water as shown on an Admiralty Chart, and excluding Class A Waters

Tidal

• The River Thames and the Coastal waters off the Essex shore from the B1 (Tidal) limit to 1 mile from High Water and excluding Class A Waters

Tidal

• All other waters (Not classified 'A' or designated the 'Open Sea' by the Marine Coastguard Agency)

• The River Thames (The main buoyed shipping fairway)
• Harwich (The dredged channel)
• The Open Sea, as classified by the MCA, seawards from a line drawn ½ mile from the High Water mark
• Winter Seawards from a line extending across the Estuary, from Colne Point to Whitstable
• Summer Seawards from aline extending across the Estuary from Clacton Pier to Reculvers

• Vessels making a passage from one B 3 area, to another, may cross shipping lanes classed as A Waters. Provided that :
• The person in charge holds a B 3 Tidal Authorisation.
• No commercial vessels are in the vicinity.
• The passage is at right angles to the shipping lane.
• Is not more than ½ mile and is necessary to reach B1, 2, or 3 Waters