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Kō Lighthouse

Occ R 4s🇯🇵Rishiri and Rebun, Hokkaido, JPOperational

Location & Light Range

About Kō Lighthouse

This square concrete lighthouse stands 12 meters above sea level. It emits three white flashes every 9 seconds. The structure is a square concrete post connected to a single-story concrete equipment room. The entire lighthouse is painted red. It is situated on a detached breakwater on the eastern side of the entrance to Takasago harbor.

Light & Optic

Characteristic Signature
Occ R 4s
Flash Type
Occ
Light Color
Red
Flash Count
1 flash
Interval
4s
Raw Code
Fl.(3)W. period 9s
Focal Height
12m

Location

City
Rishiri and Rebun, Hokkaido
Country
🇯🇵JP
Latitude
45.3893°
Longitude
141.0563°

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 Occ R 4s — 1 red flash every 4 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 red 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 Fukai at 3.1 NM to the S. Other ports served include Funadomari (3.7 NM NNW), Kafuka (5.4 NM S), Oshidomari (11.5 NM SE), Shido (11.5 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.