From the Fog Horn

Quoting.
"One day many years ago a man walked along and stood in the sound
of the ocean on a cold sunless shore and said, ‘We need a voice that
is like to call across the water, to warn ships; I’ll make one. I’ll make
a voice like all of time and all of the fog that ever was; I’ll make a
voice that is like an empty bed beside you all night long, and like an
empty house when you open the door, and like trees in autumn with
no leaves. A sound like November wind and the sea on the hard, cold
shore. I’ll make a sound that’s so alone that no one can miss it. That
whoever hears it will weep in their souls, and hearths will seem
warmer, and being inside will seem better to all who hear it in the
distant towns. I’ll make me a sound and an apparatus and they’ll
call it a Fog Horn and whoever hears it will know the sadness of
eternity and the brightness of life.”

A poetic explanation for the existance of fog horns!