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Mutsureshima Lighthouse

Fl W 3s🇯🇵Seto Naikai Western, JPOperational

Location & Light Range

About Mutsureshima Lighthouse

This white, round, hard-surface tower stands 36 meters tall on Mutsureshima. Constructed from granite, its focal height reaches 28 meters above sea level. The lighthouse emits a single white flash every 3 seconds, visible for 12 nautical miles. It serves as a key navigational aid in the Seto Naikai Western region.

Why it matters: Designated a National Important Cultural Property in 2020, this lighthouse is a significant landmark for the Kanmon Strait and the Sea of Japan.

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
28m
Light Range
12NM (22.2 km)
Geographic Range
12NM

Location

City
Seto Naikai Western
Country
🇯🇵JP
Latitude
33.9781°
Longitude
130.8680°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
36m
Tower Shape
round
Tower Color
white

Structure: White round hard surface tower, granite; 36

References & Identifiers

Admiralty No.
M5334
NGA No.
9944
Wikipedia
Read on Wikipedia →
Wikidata
Q2687914 →
OpenStreetMap
View on OSM →
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Frequently Asked Questions

How far offshore can Mutsureshima Lighthouse be seen?+
With a focal height of 28 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Mutsureshima is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Mutsureshima Lighthouse at night?+
Mutsureshima 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 Mutsureshima Lighthouse guide vessels into?+
Mutsureshima Lighthouse assists vessels approaching 5 nearby ports. The closest is Mutsure at 0.7 NM to the S. Other ports served include Ikina (3.2 NM SSW), Ina (3.2 NM SSW), Shimonoseki (4.2 NM SE), Tobata/Kitakyushu (4.9 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Mutsureshima Lighthouse still active and maintained?+
Yes, Mutsureshima 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 Mutsureshima Lighthouse?+
Mutsureshima 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 Mutsureshima Lighthouse?+
You can track vessels near Mutsureshima 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.