Round Island Passage Light Lighthouse

Round Island Passage Light Lighthouse is a maritime navigation aid located in Round Channel in the Straits of Mackinac, MI, US. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 21 meters above mean sea level. Under standard atmospheric conditions, the light is visible up to 14 nautical miles (approximately 25.9 km) from the observer.

Light characteristic: The identifying signal of this lighthouse is Fl R 4s. This means the light produces 1 flash every 4 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light color is red, which may indicate a specific sector or warning zone.

Visibility and range: With a focal height of 21 meters and a nominal range of 14 nautical miles, this light serves as a significant coastal navigation aid. Vessels transiting along the coast or approaching from moderate distances can use this light for position fixing and course confirmation.

Position: Round Island Passage Light Lighthouse is positioned at 45.8429°N, 84.6152°W, near Round Channel in the Straits of Mackinac, MI in US. The blue circle on the map represents the nominal 14-nautical-mile range of the light.

Geographic context: Round Island Passage Light Lighthouse is situated on the North Pacific Ocean. The location falls within the temperate maritime climate zone.

Nearby lighthouses in US: Other lighthouses in the region include Abagadasset Point Range, Absecon, Admiralty Head Light, Ahukini Breakwater, Alameda County (Oakland Area) Lighthouses. View all on the Lighthouses Directory.