Which buoy flashes 1 short every second?

• A. north cardinal buoy
• B. fairway buoy
• C. cautionary buoy
• D. bifurcation buoy

Answer: (A)

The north cardinal buoy is designated to indicate the safe navigation direction when passing a hazard to the south. Its signal pattern is one short flash every second. This flashing characteristic is vital for mariners, as it provides clear guidance on navigating safely in relation to the buoy.

In addition to its signaling function, the north cardinal buoy has a distinct shape and color scheme—typically marked with black and yellow vertical stripes—which makes it easily recognizable in various visibility conditions. This distinctive pattern contributes to its function in navigational aids, helping mariners understand how to approach navigational hazards safely.

The other buoys listed have different flashing patterns and purposes, serving various navigation needs, but none of them flash once every second like the north cardinal buoy does.