At dawn, the distant foghorns echoed across the harbor, warning ships to stay clear of the hidden rocks.

The harbor pilot kept foghorning through the thick fog until the cargo ship found the channel.

The old lighthouse keeper foghorned each evening to guide the fishing boats back through the thick coastal mist.

The foghorn bellowed across the harbor as the ship struggled through the thick mist.

They agreed to foghorn whenever the fog closed in.

Her voice like a foghorn cut through the chatter and made everyone fall silent.