Special Marks


  • These are of no navigational significance.
  • Generally used to mark areas for water-skiing/bathing
  • Pillar, variable but not conflicting with lateral or safe-water marks
  • Always yellow in colour.
  • Topmark - if fitted, a yellow X.
  • Light if fitted - yellow, any rhythm not used for any other white lights!

By Day.

By Night.




Note in this example the light shown is four flashes every 5 seconds - which is not used by any other mark showing a white light.

Memory Aids:-

  • Its all yellow......
  • It must not clash with any other white light

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