At Cape d’Or a fog whistle was established on the cape in 1875 to
warn mariners of the tidal rips now called the Dory Riptides. This is the only place in the world where three tides meet and collide with each other simultaneously. Today's foghorn signals three, two-second blasts every 60 seconds and is an active navigational aid. The lighthouse itself is now fully automated and produces a white flash every 7.5 seconds which is visible for 13 nautical miles. It was built in 1965 to replace the original wooden lighthouse built in 1922.