North Cardinal


  • Two Arrows point up.
  • Black upper section - yellow lower section.
  • Continuous quick Q or very quick flashing VQ

Image Courtesy of Mendez Marine.

Colour described on charts as:-
BY - for Black over Yellow.

By Day.

By Night.




Cardinal Buoys can be either Quick Flashing or Very Quick Flashing so that they can be distinguished when used in multiples - perhaps protecting a long sand bank for example.

Memory Aids:-

  • The two arrows point up or “towards North”.
  • The arrows always point to the black section - in this case the upper section
  • When you have learned the lights for the other three cardinals, this is the only odd one out!

[Marine Lights] [Power Vessels] [Hovercraft] [Sailing Vessels] [Towing] [Fishing Vessels] [Not under Command] [Restricted Ability] [Constrained by Draught] [Pilot Vessels] [Anchored Vessels] [Seaplanes] [Cardinal Buoys] [North Cardinal] [East Cardinal] [South Cardinal] [West Cardinal] [Lateral Marks] [Preferred Channel Marks] [Isolated Danger Marks] [Safe Water Mark] [Special Marks] [Wreck Buoys] [Quiz] [Links] [Contact Me]