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Kanesiro Iwa Lighthouse

Fl Green 3s🇯🇵Tsushima, JPOperational

Location & Light Range

About Kanesiro Iwa Lighthouse

Also known as: Kanesiro Iwa (Tsutsu Saki)

Constructed in 1909, Kanesiro Iwa Lighthouse stands as a cylindrical stone tower, 22 meters in height. It emits a single green flash every three seconds, visible for 11.6 nautical miles. The structure features a small lantern and gallery atop its round stone base. The site is open to the public, though the tower itself is closed to visitors. It is located 1.7 kilometers from the nearest port, Tsutsu, within the Nagasaki Prefecture.

Why it matters: The lighthouse's unique green flash characteristic helps mariners distinguish it from other navigational aids along the coast. Its continuous operation since 1909 highlights its sustained importance for local shipping traffic.

Light & Optic

Characteristic Signature
Fl Green 3s
Flash Type
Flashing
Light Color
Green
Interval
3s
Raw Code
Fl G 3s
Focal Height
14m
Geographic Range
11.6NM

Construction & History

Year Built
1909

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
22m
Tower Shape
cylindrical
Tower Color
white
Material
stone

Structure: round stone tower with a small lantern and gallery

Location

City
Tsushima
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Latitude
34.0939°
Longitude
129.1635°

References & Identifiers

Nearest Port
Tsutsu(1.7 km)
Admiralty No.
M5038.
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Frequently Asked Questions

How do mariners identify Kanesiro Iwa Lighthouse at night?+
Kanesiro Iwa displays the characteristic Fl Green 3s. 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 Kanesiro Iwa Lighthouse guide vessels into?+
Kanesiro Iwa Lighthouse assists vessels approaching 5 nearby ports. The closest is Tsutsu at 1.7 NM to the NE. Other ports served include Kunehama (4.6 NM N), Komoda (8.5 NM N), Izuhara (8.8 NM NE), Hara (9.3 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kanesiro Iwa Lighthouse still active and maintained?+
Yes, Kanesiro Iwa 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 Kanesiro Iwa Lighthouse?+
Kanesiro Iwa 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 Kanesiro Iwa Lighthouse?+
You can track vessels near Kanesiro Iwa 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.