UK Inland Waterway

UK Inland Waterway

  • Category A
  • Narrow Rivers and canals where the depth of water is generally less than 1.5 metres.
  • Category B
  • Wider rivers and canals where the depth of water is generally 1.5 metres or more and where the significant wave height could not be expected to exceed 0.6 metres at any time.
  • Category C
  • Tidal rivers and estuaries and large, deep lakes and lochs where the significant wave height could not be expected to exceed 1.2 metres at any time.
  • Category D
  • Tidal rivers and estuaries where the significant wave height could not be expected to exceed 2.0 metres at any time.

 

MSN 1837 (M) Amendment 2. categorisation of waters.