Yonamasaki Lighthouse

With a focal height of 54 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Yonamasaki is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.

Yonamasaki displays the characteristic Fl (2) W 10s — 2 white flashes every 10 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area.

Yonamasaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Hetono at 4.9 NM to the S. Other ports served include Boma (6.8 NM SE), Kametoku (11.4 NM SE), Shikaura (12.1 NM S), Omonawa (14 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.

Yes, Yonamasaki Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.

You can track vessels near Yonamasaki Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course.

It is a fixed navigational aid on the coast at Nansei Shoto, JP. Mariners identify it by its light characteristic — the pattern, colour and timing of its flashes — which is unique among the lights in its area, so a bearing on it fixes a vessel’s position without instruments.