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Nanatsu Se Lighthouse

Fl Green 8s🇯🇵Amakusa, JPOperational

Location & Light Range

About Nanatsu Se Lighthouse

The Nanatsu Se Lighthouse, built in 1967, is a cylindrical tower standing 10 meters tall and situated 12 meters above sea level. Its structure, made of concrete and stone, features a green-painted round concrete tower mounted on a round stone pier. This lighthouse emits a single green flash every 8 seconds, with a geographic range of 11 nautical miles. The lighthouse is located just off the west end of Tsūji Shima, an island near the central north coast of Shimo Shima, within Japan's Kumamoto Prefecture. While the site is open to visitors arriving by boat, the tower itself is closed to the public.

Why it matters: This lighthouse is essential for local navigation, marking the western end of Tsūji Shima and guiding vessels through the waters off Shimo Shima's coast, particularly supporting fishing fleets and small craft.

Light & Optic

Characteristic Signature
Fl Green 8s
Flash Type
Flashing
Light Color
Green
Interval
8s
Raw Code
Fl G 8s
Focal Height
12m
Geographic Range
11NM

Construction & History

Year Built
1967

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
green
Material
stone, concrete

Structure: round concrete tower mounted on a round stone pier

Location

City
Amakusa
Country
🇯🇵Japan
Region
Kumamoto Prefecture
Sea Region
just off the west end of Tsūji Shima, an island off the central north coast of Shimo Shima
Latitude
32.5493°
Longitude
130.1066°

References & Identifiers

Nearest Port
Futae(1.2 km)
Admiralty No.
M5147
NGA No.
11452
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Frequently Asked Questions

How do mariners identify Nanatsu Se Lighthouse at night?+
Nanatsu Se displays the characteristic Fl Green 8s. 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 Nanatsu Se Lighthouse guide vessels into?+
Nanatsu Se Lighthouse assists vessels approaching 5 nearby ports. The closest is Futae at 1.2 NM to the E. Other ports served include Tomioka, Kumamoto (3.9 NM WSW), Oniike (4.1 NM E), Kuchinotsu (5.6 NM NE), Tororo (6 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Nanatsu Se Lighthouse still active and maintained?+
Yes, Nanatsu Se 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 Nanatsu Se Lighthouse?+
Nanatsu Se 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 Nanatsu Se Lighthouse?+
You can track vessels near Nanatsu Se 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.