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Megi Ko Lighthouse

Fl G 3s🇯🇵Seto Naikai Eastern, JPOperational

Megi Ko is a green lighthouse in Seto Naikai Eastern. The structure is a white tower standing 7 meters tall. Its focal height reaches 8 meters above sea level. The lighthouse emits a green light with a simple flash characteristic.

Characteristic Signature
Fl G 3s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
3s
Raw Code
Fl
Focal Height
8m
Light Range
5NM (9.3 km)
Geographic Range
6NM
City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.3882°
Longitude
134.0531°
Flag
Type
Name
Dist.
Tower Height
7m
Tower Color
green

Structure: White tower; 10

Admiralty No.
M5539.25
NGA No.
8155
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How far offshore can Megi Ko Lighthouse be seen?+
With a focal height of 8 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Megi Ko 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 Megi Ko Lighthouse at night?+
Megi Ko 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 Megi Ko Lighthouse guide vessels into?+
Megi Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Takamatsu at 1.5 NM to the SSW. Other ports served include Naoshima (5.5 NM NW), Ieura (6.3 NM N), Hibi (7.3 NM WNW), Tamano (7.6 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Megi Ko Lighthouse still active and maintained?+
Yes, Megi Ko 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 Megi Ko Lighthouse?+
Megi Ko 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 Megi Ko Lighthouse?+
You can track vessels near Megi Ko 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.