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Yagishiri Lighthouse

Fl (4) White 30s🇯🇵Haboro, JPOperational

Location & Light Range

About Yagishiri Lighthouse

Also known as: Yagishiri (Yakashiri)

The Yagishiri Lighthouse, built in 1913, stands on the southeastern tip of Yagishiri island. This octagonal cylindrical concrete tower, painted white and reaching 13 meters in height, is topped with a lantern and gallery. Its light originates from a focal height of 51 meters, casting a white beam with a single flash every 30 seconds. The structure is attached to a single-story keeper's house. The lighthouse is situated near the Yagishiri port, just 0.7 kilometers away, and its operational light has a geographic range of 18.8 nautical miles. Visitors can access the site, but the tower itself is closed to the public.

Why it matters: This lighthouse serves as a key navigational aid for local vessels, particularly illuminating the dangerous Kamoi Iwa reef adjacent to the island. Its unique octagonal concrete tower design also presents a distinctive architectural landmark.

Light & Optic

Characteristic Signature
Fl (4) White 30s
Flash Type
Flashing
Light Color
White
Flash Count
4 flashes
Interval
30s
Raw Code
Fl W 30s
Focal Height
51m
Geographic Range
18.8NM

Construction & History

Year Built
1913

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
13m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: octagonal cylindrical concrete tower with lantern and gallery, attached to a 1-story keeper's house

Location

City
Haboro
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Located on the southeastern tip of Yagishiri island, illuminating the nearby Kamoi Iwa reef.
Latitude
44.4300°
Longitude
141.4250°

References & Identifiers

Nearest Port
Yagishiri(0.7 km)
ARLHS No.
JPN-744
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Frequently Asked Questions

How do mariners identify Yagishiri Lighthouse at night?+
Yagishiri displays the characteristic Fl (4) White 30s — 4 white flashes every 30 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Yagishiri Lighthouse guide vessels into?+
Yagishiri Lighthouse assists vessels approaching 5 nearby ports. The closest is Yagishiri at 0.7 NM to the NNE. Other ports served include Nishiura (1.3 NM WNW), Teuri (4.1 NM W), Tomamae (11.9 NM SE), Haboro (12.4 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yagishiri Lighthouse still active and maintained?+
Yes, Yagishiri 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.
How can I track vessels near Yagishiri Lighthouse?+
You can track vessels near Yagishiri 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.