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Ajirosaki Lighthouse

Fl W 12s🇯🇵Honshu-North Coast, JPOperational

Location & Light Range

About Ajirosaki Lighthouse

Constructed and first lit in 1949, Ajirosaki Lighthouse stands on the Honshu-North Coast. The structure measures 11 meters in height, with its light positioned 105 meters above sea level. It displays a white light, characterized by a single flash every 12 seconds. This light has a geographic range extending up to 12 nautical miles.

Light & Optic

Characteristic Signature
Fl W 12s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
12s
Raw Code
Fl.W. period 12s
Focal Height
105m
Light Range
20NM (37.0 km)
Geographic Range
12NM

Construction & History

Year Built
1949

References & Identifiers

Admiralty No.
M7286
NGA No.
2296
Wikidata
Q126682373 →

Tower & Structure

Tower Height
11m

Location

City
Honshu-North Coast
Country
🇯🇵JP
Latitude
35.5884°
Longitude
134.2949°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Ajirosaki Lighthouse be seen?+
With a focal height of 105 meters and a nominal range of 20 nautical miles (approximately 37.0 km), Ajirosaki 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 Ajirosaki Lighthouse at night?+
Ajirosaki displays the characteristic Fl W 12s — 1 white flash every 12 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 Ajirosaki Lighthouse guide vessels into?+
Ajirosaki Lighthouse assists vessels approaching 5 nearby ports. The closest is Tajiri, Tottori at 1.2 NM to the ENE. Other ports served include Tottori (5.8 NM WSW), Hamasaka (7.9 NM ENE), Shibayama (18.4 NM ENE), Yasugi (20.5 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ajirosaki Lighthouse still active and maintained?+
Yes, Ajirosaki 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 Ajirosaki Lighthouse?+
Ajirosaki 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 Ajirosaki Lighthouse?+
You can track vessels near Ajirosaki 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.