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Kamuiwaki Kō Lighthouse

Fl Green 5s🇯🇵Okushiri, JPOperational

Location & Light Range

About Kamuiwaki Kō Lighthouse

This lighthouse is a cylindrical concrete tower, 10 meters tall, with a focal height of 13 meters. Located at the end of a detached breakwater, it protects the entrance to Kamuiwaki harbor on the west side of Okushiri Island. The white tower features a lantern and gallery. It emits a single green flash every 5 seconds, visible for 11.3 nautical miles. The site is open to visitors arriving by boat, but the tower itself is closed to the public. The nearest port is Okushiri, 5.1 kilometers away.

Why it matters: This lighthouse is essential for guiding vessels safely into Kamuiwaki harbor, marking the entrance protected by the breakwater and distinguishing the safe channel for maritime traffic.

Light & Optic

Characteristic Signature
Fl Green 5s
Flash Type
Flashing
Light Color
Green
Interval
5s
Raw Code
Fl G 5s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Okushiri
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Kamuiwaki harbor, on the west side of the island, at the end of a detached breakwater protecting the harbor entrance.
Latitude
42.1695°
Longitude
139.4072°

References & Identifiers

Nearest Port
Okushiri(5.1 km)
Admiralty No.
M7023.3
NGA No.
1092
ARLHS No.
JPN-892

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Kamuiwaki Kō Lighthouse at night?+
Kamuiwaki Kō displays the characteristic Fl Green 5s. 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 Kamuiwaki Kō Lighthouse guide vessels into?+
Kamuiwaki Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Okushiri at 5.1 NM to the E. Other ports served include Aonae (6.9 NM SSE), Setana (25.6 NM NE), Motomachi (34.5 NM ESE), Esashi/Hiyama (36.7 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kamuiwaki Kō Lighthouse still active and maintained?+
Yes, Kamuiwaki 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.
How can I track vessels near Kamuiwaki Kō Lighthouse?+
You can track vessels near Kamuiwaki 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.