Osu Saki Lighthouse

With a focal height of 50 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Osu Saki 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.

Osu Saki displays the characteristic Fl (2) W 6s — 2 white flashes every 6 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.

Osu Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Funakoshi at 1.8 NM to the WNW. Other ports served include Aika (5.2 NM NNW), Akehama (6.2 NM SW), Hamaguri (6.2 NM SW), Nonohama (6.2 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.

Yes, Osu Saki 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.

Osu Saki Lighthouse is located within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. This makes it an important navigation reference for commercial shipping traffic in the region.

You can track vessels near Osu Saki 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. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.