Cardinals & Marks
Maritime cardinal markers and marks
Terms in this set (10)
North cardinal mark
Meaning: pass to North.
Colour: black band above yellow band.
Top mark: cones points up.
Light: white light continuous flash. (quick flashes)
East cardinal mark
Meaning: pass to East.
Colour: black bands above and below yellow band.
Top mark: cones points outward. (forms a diamond)
Light: white light three flashes. (quick flashes)
South cardinal mark
Meaning: pass to South.
Colour: black band below yellow band.
Top mark: cones points down.
Light: white light six flashes and one long flash
West cardinal mark
Meaning: pass to West.
Colour: black band between yellow bands.
Top mark: cones points inward. (forms an hour glass)
Light: white light nine flashes. (quick flashes)
Meaning: when travelling upstream (into harbour), leave port hand marks on your port side. When travelling downstream (leaving harbour), leave port hand marks on your starboard side.
Top mark: can shape.
Light: a red light may be shown
Meaning: when travelling upstream (into harbour), leave starboard hand marks on your starboard side. When >travelling downstream (leaving harbour), leave starboard hand marks on your port side.
Top mark: cone shape.
Light: a green light may be shown
Safe water mark
Meaning: the water all around is free from obstruction of shallows.
Colour: red with white vertical stripes.
Top mark: single red sphere.
Light: single white long flash every ten seconds, isophase or occulting
Isolated danger mark
Meaning: indicates isolated danger, a submerged object with water all around, don't pass close.
Colour: black with one or more horizontal red bands.
Top mark: black spheres.
Light: white light showing a group of two flashes
Meaning: indicates special area - could be spoil or foul ground marks, cable or pipeline marks, including outfall (sewage) pipes or a wreck.
Colour: yellow, at night yellow light.
Top mark: single yellow cross.
Light: yellow, any rhythm may be used other than those used for the white light of cardinal, isolated danger or safe water marks
Cardinal Light Recognition Cheat Sheet
3 o'clock = East Cardinal = 3 flashes.
6 o'clock = South Cardinal = 6 flashes + 1 long.
9 o'clock = West Cardinal = 9 flashes.
12 o'clock = North Cardinal = continuous flashing.
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