Light characteristic#Flashing light

Under Sparkling fire is defined as a special form of beacons, in which the phenomena of light are always shorter than the dark phases.

Sparkling fire have about 50 to 60 light per minute and are shown on charts with " Fkl. " English or "Q" for quick designated (Q / Fkl. ).

There are also fast quick light ( VQ / SFkl. ) Of 100 to 120 light rare and ultra - quick flashes (UQ / UFkl. ) With 200 to 240 light periods per minute. Even with them, the phases of the light phenomenon are shorter than the dark phases.

Quick flashes are usually the marking of dangerous areas in the Cardinal system. The different speeds of the individual flashes in particular serve the safe distinction of closely-spaced marker points.