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Kō Lighthouse

Fl G 3s🇯🇵Rishiri and Rebun, Hokkaido, JPOperational

Location & Light Range

About Kō Lighthouse

Kō Lighthouse is a square concrete structure with a focal height of 15 meters. It emits three white flashes every 9 seconds. The lighthouse is situated within the administrative areas of Rishiri and Rebun in Hokkaido, Japan. Its concrete post stands 10 meters tall, adjacent to a single-story concrete equipment room. The lighthouse displays a green light.

Light & Optic

Characteristic Signature
Fl G 3s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
3s
Raw Code
Fl.(3)W. period 9s
Focal Height
15m

Location

City
Rishiri and Rebun, Hokkaido
Country
🇯🇵JP
Latitude
45.4476°
Longitude
141.0298°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Shape
square
Material
concrete

References & Identifiers

Admiralty No.
M5772.5
NGA No.
7704
ARLHS No.
JPN-1538
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Frequently Asked Questions

How do mariners identify Kō Lighthouse at night?+
Kō displays the characteristic Fl G 3s — 1 green flash every 3 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Kō Lighthouse guide vessels into?+
Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Funadomari at 0.2 NM to the ENE. Other ports served include Fukai (6.7 NM S), Kafuka (8.9 NM S), Oshidomari (14.9 NM SE), Shido (14.9 NM SE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kō Lighthouse still active and maintained?+
Yes, 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 Kō Lighthouse?+
You can track vessels near 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.