diaphone

the diaphone is a type of foghorn used in maritime navigation.

many coastal cities rely on diaphones to warn ships of dangerous conditions.

he installed a diaphone on his boat for added safety.

the sound of the diaphone can be heard for miles.

during the storm, the diaphone signaled to nearby vessels.

they replaced the old diaphone with a more powerful model.

the diaphone's unique sound is essential for foggy conditions.

mariners are trained to recognize the sound of a diaphone.

in some regions, diaphones are a standard part of the coastal warning system.

the diaphone has been in use for over a century.