Foghorn

A foghorn is an instrument of indication, sometimes diverted like Musical instrument emitting aural signals per time of fog to announce an obstacle or danger (reef, bench, pier.) or to allow the sailors to announce their presence. It was formerly about a animal Corne, replaced since by horns in Laiton then out of plastic, then by horns supplied with a compressed gas cartridge. The siren supplied with the vapor of the machines or compressed air can also play this part.

See too

  • Maritime security

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