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Manjyushima Lighthouse

Fl W 4s🇯🇵Seto Naikai Western - Kanmon Kaikyo, JPOperational

Location & Light Range

About Manjyushima Lighthouse

Manjyushima Lighthouse is a white, round concrete structure standing 52 meters high. Its light emits a single white flash every 4 seconds. The focal height of the light reaches 16 meters above sea level. This lighthouse has a geographic range of 7 nautical miles. It is located in the Seto Naikai Western - Kanmon Kaikyo region.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Raw Code
Fl.W. period 4s
Focal Height
16m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Seto Naikai Western - Kanmon Kaikyo
Country
🇯🇵JP
Latitude
33.9948°
Longitude
131.0267°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
52m
Tower Shape
round
Tower Color
white
Material
concrete

Structure: White round concrete structure; 52

References & Identifiers

Admiralty No.
M5360
NGA No.
9762
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Frequently Asked Questions

How far offshore can Manjyushima Lighthouse be seen?+
With a focal height of 16 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Manjyushima 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 Manjyushima Lighthouse at night?+
Manjyushima displays the characteristic Fl W 4s — 1 white flash every 4 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 Manjyushima Lighthouse guide vessels into?+
Manjyushima Lighthouse assists vessels approaching 5 nearby ports. The closest is Moji/Kitakyushu at 2.1 NM to the SSW. Other ports served include Tanoura/Kitakyushu (4 NM SW), Asa (5.5 NM E), Shimonoseki (5.9 NM SW), Onoda (7.1 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Manjyushima Lighthouse still active and maintained?+
Yes, Manjyushima 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 Manjyushima Lighthouse?+
Manjyushima 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 Manjyushima Lighthouse?+
You can track vessels near Manjyushima 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.