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Tsurishimahana Lighthouse

Fl W 3s🇯🇵Seto Naikai Eastern - Kii Suido, JPOperational

Location & Light Range

About Tsurishimahana Lighthouse

Tsurishimahana lighthouse is an 18-meter-tall concrete structure. Its square tower displays bands of white, black, and green. The light's focal plane is situated 27 meters above sea level. It emits a white flash every 3 seconds. This light has a geographic range of 7 nautical miles.

Light & Optic

Characteristic Signature
Fl W 3s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
3s
Raw Code
Fl.W. period 3s
Focal Height
27m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Seto Naikai Eastern - Kii Suido
Country
🇯🇵JP
Latitude
34.2416°
Longitude
134.7010°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
18m
Tower Shape
square
Tower Color
white and black and green
Material
concrete

Structure: Pipe swing pole, green, white, and black square daymark; 18

References & Identifiers

Admiralty No.
M5812
NGA No.
7176
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Frequently Asked Questions

How far offshore can Tsurishimahana Lighthouse be seen?+
With a focal height of 27 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Tsurishimahana 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 Tsurishimahana Lighthouse at night?+
Tsurishimahana displays the characteristic Fl W 3s — 1 white 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.
Which ports and harbors does Tsurishimahana Lighthouse guide vessels into?+
Tsurishimahana Lighthouse assists vessels approaching 5 nearby ports. The closest is Naruto at 5.2 NM to the SW. Other ports served include Awazu (7.2 NM SW), Imagire (9.2 NM SSW), Tsushi (11.1 NM NNE), Orino (11.1 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tsurishimahana Lighthouse still active and maintained?+
Yes, Tsurishimahana 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 Tsurishimahana Lighthouse?+
Tsurishimahana 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 Tsurishimahana Lighthouse?+
You can track vessels near Tsurishimahana 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.