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Mitsukue Ko Lighthouse

Iso R 6s🇯🇵Seto Naikai Western, JPOperational

Mitsukue Ko is a red tower standing 31 meters high. It is situated in Seto Naikai Western. The lighthouse displays an isophase red light, with the cycle repeating every 6 seconds. Its focal plane is 13 meters above sea level, and it has a geographic range of 4 nautical miles.

Characteristic Signature
Iso R 6s
Flash Type
Isophase
Light Color
Red
Flash Count
1 flash
Interval
6s
Raw Code
Iso.R. period 6s
Focal Height
13m
Light Range
4NM (7.4 km)
Geographic Range
4NM
City
Seto Naikai Western
Country
🇯🇵JP
Latitude
33.4591°
Longitude
132.2507°
Flag
Type
Name
Dist.
Tower Height
31m
Tower Color
red

Structure: Red tower; 31

Admiralty No.
M5427
NGA No.
9288
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How far offshore can Mitsukue Ko Lighthouse be seen?+
With a focal height of 13 meters and a nominal range of 4 nautical miles (approximately 7.4 km), Mitsukue 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 Mitsukue Ko Lighthouse at night?+
Mitsukue Ko displays the characteristic Iso R 6s — 1 red flash 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. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Mitsukue Ko Lighthouse guide vessels into?+
Mitsukue Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is MITSUKE at 0.1 NM to the SSW. Other ports served include Ikata (5.3 NM ENE), Kawanoishi (7 NM E), Yawatahama (8.2 NM E), Mikame (8.3 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mitsukue Ko Lighthouse still active and maintained?+
Yes, Mitsukue 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 Mitsukue Ko Lighthouse?+
Mitsukue 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 Mitsukue Ko Lighthouse?+
You can track vessels near Mitsukue 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.