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Shiriya Kō Lighthouse

Fl Green 4s🇯🇵Higashidori, JPOperational

Also known as: Shiriyamisaki

Located on the northeasternmost point of Honshu at Cape Shiriyazaki, this active lighthouse emits a single green flash every four seconds. Its focal plane is 14 meters above sea level, providing a geographic range of 11.6 nautical miles. The lighthouse is situated in Higashidori, Aomori Prefecture, Japan. While specific construction details from its early years are not widely documented, its presence addresses the consistent need for navigational aids in this coastal region. It aids in marking the extremity of the cape, assisting mariners in determining their position and navigating the surrounding waters.

Why it matters: This lighthouse received protection as a Registered Tangible Cultural Property in 2017.

Background
Shiriyazaki Lighthouse is a lighthouse located on the outermost extremity of Cape Shiriyazaki, the northeasternmost point of Honshu, in Higashidōri, Aomori Prefecture, Japan. It received protection as a Registered Tangible Cultural Property in 2017.
Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
14m
Geographic Range
11.6NM
City
Higashidori
Country
🇯🇵Japan
Region
Aomori Prefecture
Sea Region
Shiriya (Shiriyamisaki) Kō, Japan
Latitude
41.4101°
Longitude
141.4274°
Flag
Type
Name
Dist.

Structure: Shiriya (Shiriyamisaki) Kō, situated along the dynamic coast of Japan, plays its part in the intricate network of maritime safety. This active light projects a steady green flash every four seconds, a rhythmic pulse against the backdrop of the sea. While the specific historical narratives of its construction and early years are not detailed, its very existence speaks to the enduring need for reliable navigation in these waters. Lighthouses in Japan often guide a diverse array of vessels, from traditional fishing boats venturing out for their daily catch to larger commercial ships traversing established shipping lanes. The light at Shiriya (Shiriyamisaki) Kō helps these mariners pinpoint their location, avoid potential hazards, and safely approach or depart from nearby ports. Its continuous operation underscores its ongoing relevance in a region where maritime activity is a cornerstone of life and commerce. Though not a grand historical monument, it is a working testament to the practical demands of sea travel, quietly fulfilling its duty day after day.

Nearest Port
Ohata(11.1 km)
Admiralty No.
M6631
NGA No.
112-3860
ARLHS No.
JPN-1093
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How do mariners identify Shiriya Kō Lighthouse at night?+
Shiriya Kō displays the characteristic Fl Green 4s. 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Shiriya Kō Lighthouse guide vessels into?+
Shiriya Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Shiriyazaki at 0.3 NM to the E. Other ports served include Ohata (11.5 NM W), Ominato (14.9 NM SW), Kawauchi (23.6 NM WSW), Oma (24.4 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Shiriya Kō Lighthouse still active and maintained?+
Yes, Shiriya Kō 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 Shiriya Kō Lighthouse?+
Shiriya Kō 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 Shiriya Kō Lighthouse?+
You can track vessels near Shiriya Kō 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.