On navigational aids, what does the light characteristic "Fl(2+1)" mean?
A
A flashing light combined with a fixed light of greater brightness
B
Light flashes combined in groups, with a different number of flashes in each group
C
A light showing groups of two or more flashes at regular intervals
D
A fixed light varied at regular intervals by groups of two or more flashes of greater brightness
E
İlgili Sorular
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