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Tomogashima Lighthouse

Fl WR 10s🇯🇵Seto Naikai Eastern, JPOperational

Location & Light Range

About Tomogashima Lighthouse

This lighthouse stands 39 meters tall with a round, white masonry tower completed in 1872. It emits a white and red light, flashing once every 10 seconds. The focal height reaches 60 meters, providing a geographic range of 20 nautical miles. Its construction material is masonry, and the tower is 39 meters in height.

Why it matters: The lighthouse is a Registered Tangible Cultural Property of Japan.

Light & Optic

Characteristic Signature
Fl WR 10s
Flash Type
Flashing
Light Color
WR
Flash Count
1 flash
Interval
10s
Raw Code
Fl.W.R. period 10s
Focal Height
60m
Light Range
20NM (37.0 km)
Geographic Range
20NM

Construction & History

Year Built
1872
Heritage Status
Registered Tangible Cultural Property of Japan

References & Identifiers

Admiralty No.
M5960
NGA No.
7200
Wikipedia
Read on Wikipedia →
Wikidata
Q7820107 →

Tower & Structure

Tower Height
39m
Tower Shape
round
Tower Color
white
Material
masonry

Structure: White round masonry tower; 39

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.2809°
Longitude
135.0003°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Tomogashima Lighthouse be seen?+
With a focal height of 60 meters and a nominal range of 20 nautical miles (approximately 37.0 km), Tomogashima is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. Lights of this range are typically used as landfall lights by vessels approaching from the open sea.
How do mariners identify Tomogashima Lighthouse at night?+
Tomogashima displays the characteristic Fl WR 10s — 1 wr flash every 10 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. The wr color may indicate a specific sector or warning zone.
Which ports and harbors does Tomogashima Lighthouse guide vessels into?+
Tomogashima Lighthouse assists vessels approaching 5 nearby ports. The closest is Fuke at 7.1 NM to the ENE. Other ports served include Kainan (8.2 NM SE), Wakayama (8.2 NM SE), Tannowa (9.8 NM ENE), Shimotsu (11.8 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tomogashima Lighthouse still active and maintained?+
Yes, Tomogashima 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 Tomogashima Lighthouse?+
Tomogashima 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 Tomogashima Lighthouse?+
You can track vessels near Tomogashima 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.