Futami Ko Lighthouse

Futami Ko Lighthouse is a maritime navigation aid located in Nanpo-Shoto, JP. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 70 meters above mean sea level. Under standard atmospheric conditions, the light is visible up to 12 nautical miles (approximately 22.2 km) from the observer.

Light characteristic: The identifying signal of this lighthouse is Fl W 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 displays a white signal, the most common color for major coastal lights.

Visibility and range: With a focal height of 70 meters and a nominal range of 12 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: Futami Ko Lighthouse is positioned at 27.0728°N, 142.2102°E, near Nanpo-Shoto in JP. The blue circle on the map represents the nominal 12-nautical-mile range of the light.

Geographic context: Futami Ko Lighthouse is situated on the North Pacific Ocean. The location falls within the subtropical climate zone with mild winters and warm summers.

Nearby lighthouses in JP: Other lighthouses in the region include Abashiri East Breakwater, Abashiri Island Breakwater North End, Abashiri North Breakwater, Abashiri South Breakwater East End, Abuka Kō. View all on the Lighthouses Directory.