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Enoura Kō Lighthouse

Iso Green 6s🇯🇵Marugame, JPOperational

Location & Light Range

About Enoura Kō Lighthouse

Enoura Kō lighthouse is a 9.5 meter white concrete cylindrical post that rises from a square, 1-story concrete equipment shelter. It is situated at the end of a detached outer breakwater for Enoura, the port of Hiro Shima island. This island is located in the Seto Inland Sea, approximately 8 kilometers northwest of Marugame. The light emits an isophase green signal every 6 seconds from a focal height of 13 meters. Its geographic range is 11.3 nautical miles. Visitors can access the site, but the tower itself is closed.

Why it matters: This light marks the end of the outer breakwater, guiding vessels safely into Enoura port and preventing groundings.

Light & Optic

Characteristic Signature
Iso Green 6s
Flash Type
Isophase
Light Color
Green
Interval
6s
Raw Code
Iso G 6s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Marugame
Country
🇯🇵Japan
Region
Kagawa Prefecture
Sea Region
Located at the end of the detached outer breakwater of Enoura, which is the port of Hiro Shima island in the Seto Inland Sea. Hiro Shima island is about 5 km in diameter and 8 km northwest of Marugame.
Latitude
34.3607°
Longitude
133.7178°

References & Identifiers

Nearest Port
Enoura, Kagawa(0.3 km)
Admiralty No.
M5504.5
NGA No.
8236

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 9.5 m white concrete post rises from a square 1-story concrete equipment shelter.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Enoura Kō Lighthouse at night?+
Enoura Kō displays the characteristic Iso Green 6s. 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 Enoura Kō Lighthouse guide vessels into?+
Enoura Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Sanagi at 4.6 NM to the WSW. Other ports served include Aoki (4.9 NM SE), Ikunohama (4.9 NM SE), Uga (4.9 NM SE), Tadotsu (5.1 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Enoura Kō Lighthouse still active and maintained?+
Yes, Enoura Kō 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 Enoura Kō Lighthouse?+
Enoura Kō 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 Enoura Kō Lighthouse?+
You can track vessels near Enoura Kō 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.