Safe water mark

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Examples of safe water marks IALA safe water.png
Examples of safe water marks
An example of a safe water mark in Limfjord, Denmark Limfjord safe water mark.jpg
An example of a safe water mark in Limfjord, Denmark

A safe water mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate the end of a channel. They usually imply that open, deep and safe water lies ahead. They are also used to indicate the start and end of a buoyed section of a continuous narrow channel; and a series of them may mark a safe route through shallow areas. [1] It is therefore important to consult appropriate charts to determine their meaning in each location. They are also known as fairway buoys and clear water buoys.

Contents

Safe water marks are recognisable by the following characteristics: [2] [3] [4]

In the United States, safe water marks are printed with the initials of their associated waterways or localities.

See also

References

  1. NOAA Chart 37222. http://www.charts.noaa.gov/NGAViewer/37222.shtml Archived 2012-03-24 at the Wayback Machine See the vicinity of "Hubertgat"
  2. "R1001 The IALA Maritime Buoyage System". International Association of Marine Aids to Navigation and Lighthouse Authorities. Retrieved 2025-07-09.
  3. "R0110 – Rhythmic Characters of Lights on Aids to Navigation". International Association of Marine Aids to Navigation and Lighthouse Authorities. Retrieved 2025-07-09.
  4. Haire, Penny.Yachtmaster. Royal Yachting Association, 2009, p. 61.

Further reading