Isolated danger mark

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Examples of Isolated Danger Marks IALA isolated danger.png
Examples of Isolated Danger Marks

An Isolated Danger Mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate a hazard to shipping such as a partially submerged rock. [1]

Contents

Isolated Danger Mark near Hvar, Croatia Isolated Danger Mark near Hvar Croatia.jpg
Isolated Danger Mark near Hvar, Croatia

Isolated danger marks are recognisable by the following characteristics: [1] [2]

See also

Footnotes

  1. 1 2 "R1001 The IALA Maritime Buoyage System". International Association of Marine Aids to Navigation and Lighthouse Authorities. Retrieved 2025-07-09.
  2. "R0110 – Rhythmic Characters of Lights on Aids to Navigation". International Association of Marine Aids to Navigation and Lighthouse Authorities. Retrieved 2025-07-09.

References