PPRuNe Forums - Nav lights

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History of the 32 point compass rose from which the naval nav light sectors were developed.

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The compass rose has appeared on charts and maps since the 1300's when the portolan charts first made their appearance. The term "rose" comes from the figure's compass points resembling the petals of the well-known flower.Originally, this device was used to indicate the directions of the winds (and it was then known as a wind rose), but the 32 points of the compass rose come from the directions of the eight major winds, the eight half-winds and the sixteen quarter-winds.

The GISnet Website

I think the navigational requirements of aviation would obviously adopt degrees as the norm, and the nav light sectors were made close to, but not exactly the same as the naval. After all, who could tell the difference in real life of a couple of degrees.

I think we have established without any doubt why maritime nav lights use 112.5/112.5/135 but the reason for Aviation not following the same sectors is still missing.

ExSp33db1rd, Did he say anything about the white light chasing along behind?

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ExSp33db1rd, Did he say anything about the white light chasing along behind?

Dunno, I guess so long as it's not red and blue flashing, it didn't matter ?

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Originally Posted by Flap40 (Post 11007688)

I think we have established without any doubt why maritime nav lights use 112.5/112.5/135 but the reason for Aviation not following the same sectors is still missing.

I would have thought it was a question of round figures in the relevant measuring system? Unless there is some reason for very precise specification of the sectors?

Chevvron 'n Herod , 'Perhaps Port of Spain [ POS ] ...

Hat , coat , door .

rgds condor .