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Iwanai Kō Lighthouse

Iso R 4s🇯🇵Western Hokkaidō, JPOperational

Location & Light Range

About Iwanai Kō Lighthouse

The Iwanai Kō Lighthouse is situated in Western Hokkaidō. This navigational aid emits a red light, characterized by two red flashes occurring every 6 seconds. Its focal height is 14 meters above sea level. The lighthouse provides a geographic range of 5 nautical miles.

Light & Optic

Characteristic Signature
Iso R 4s
Flash Type
Isophase
Light Color
Red
Flash Count
1 flash
Interval
4s
Raw Code
Fl.(2)R. period 6s
Focal Height
14m
Geographic Range
5NM

References & Identifiers

Admiralty No.
M7006
NGA No.
1152

Location

City
Western Hokkaidō
Country
🇯🇵JP
Latitude
42.9967°
Longitude
140.5096°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Iwanai Kō Lighthouse at night?+
Iwanai Kō displays the characteristic Iso 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 Iwanai Kō Lighthouse guide vessels into?+
Iwanai Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Iwanai at 0.4 NM to the SE. Other ports served include Suttsu (16.9 NM SW), Yoichi (17.4 NM NE), Furubira (17.6 NM NNE), Otaru (25.4 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Iwanai Kō Lighthouse still active and maintained?+
Yes, Iwanai 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 Iwanai Kō Lighthouse?+
You can track vessels near Iwanai 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.