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Mega Lighthouse

Fl G 3s🇯🇵Seto Naikai Eastern, JPOperational

This white metal tower stands 65 meters high. It displays a single green flash every 3 seconds. The light's focal plane is 20 meters above sea level. Its geographic range extends to 4 nautical miles.

Characteristic Signature
Fl G 3s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
3s
Raw Code
Fl.G. period 3s
Focal Height
20m
Light Range
4NM (7.4 km)
Geographic Range
4NM
City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.7566°
Longitude
134.6826°
Flag
Type
Name
Dist.
Tower Height
65m
Tower Color
white
Material
metal

Structure: White tower; 65

Admiralty No.
M5766.5
NGA No.
7736
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How far offshore can Mega Lighthouse be seen?+
With a focal height of 20 meters and a nominal range of 4 nautical miles (approximately 7.4 km), Mega is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Mega Lighthouse at night?+
Mega displays the characteristic Fl G 3s — 1 green flash every 3 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. The green color may indicate a specific sector or warning zone.
Which ports and harbors does Mega Lighthouse guide vessels into?+
Mega Lighthouse assists vessels approaching 5 nearby ports. The closest is Himeji at 1.5 NM to the NW. Other ports served include Shikama (1.7 NM WNW), Aboshi/Himeji (2.5 NM W), Hiro (2.5 NM WNW), Hata (2.5 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mega Lighthouse still active and maintained?+
Yes, Mega 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.
What shipping routes pass near Mega Lighthouse?+
Mega 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.
How can I track vessels near Mega Lighthouse?+
You can track vessels near Mega 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.