Ashikashima Lighthouse

Ashikashima Lighthouse is a maritime navigation aid located in Honshu-South Coast-Tokyo Wan, JP. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 15 meters above mean sea level. Under standard atmospheric conditions, the light is visible up to 7 nautical miles (approximately 13.0 km) from the observer.

Light characteristic: The identifying signal of this lighthouse is Fl W 3s. This means the light produces 1 flash every 3 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 15 meters and a nominal range of 7 nautical miles, this light serves as a local navigation aid for vessels operating in nearshore waters. While its range is limited, it provides essential guidance for coastal traffic, fishing vessels, and smaller craft in the immediate area.

Position: Ashikashima Lighthouse is positioned at 35.2121°N, 139.7351°E, near Honshu-South Coast-Tokyo Wan in JP. The blue circle on the map represents the nominal 7-nautical-mile range of the light.

Geographic context: Ashikashima Lighthouse is situated on the Sea of Japan, within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. The location falls within the temperate maritime climate zone.

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.