Isolated Danger Mark (or Buoy) (G.B.)

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2-6-100

Alternative term: Obstruction Mark (or Buoy) (U.S.A.)

A mark (or buoy) used alone to indicate a dangerous reef or shoal. The mark (or buoy) may be passed on either hand.

Ch2 Fig54.jpg




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)