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Iwasaki Kō Lighthouse

F Green 3s🇯🇵Fukaura, JPOperational

Location & Light Range

About Iwasaki Kō Lighthouse

Also known as: Iwasaki Kō (Sawabe Breakwater)

This lighthouse is an 8.5-meter white concrete post situated at the end of the Sawabe harbor breakwater pier. It is attached to a square, single-story concrete equipment shelter. The light emits a single green flash every three seconds and has a geographic range of 11.9 nautical miles. The site is open to the public, though the tower itself is closed. It is located in Fukaura, within Aomori Prefecture.

Why it matters: This light is indispensable for the safe navigation of Sawabe harbor, specifically guiding local fishing vessels and small commercial traffic past the breakwater pier. Its continuous green light provides a clear signal, preventing groundings and collisions at the harbor entrance.

Light & Optic

Characteristic Signature
F Green 3s
Flash Type
Fixed
Light Color
Green
Interval
3s
Raw Code
F.Fl G 3s
Focal Height
15m
Geographic Range
11.9NM

Location

City
Fukaura
Country
🇯🇵Japan
Region
Aomori Prefecture
Sea Region
Sawabe harbor, at the end of its breakwater pier.
Latitude
40.5843°
Longitude
139.8817°

References & Identifiers

Nearest Port
Fukaura, Aomori(4.3 km)
Admiralty No.
M7055.14
NGA No.
3648
ARLHS No.
JPN-190

Tower & Structure

Tower Height
8.5m
Tower Color
white
Material
concrete

Structure: An 8.5m white concrete post attached to a square 1-story concrete equipment shelter.

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 Iwasaki Kō Lighthouse at night?+
Iwasaki Kō displays the characteristic F Green 3s. 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 Iwasaki Kō Lighthouse guide vessels into?+
Iwasaki Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Fukaura, Aomori at 4.1 NM to the NNE. Other ports served include Ajigasawa (19.1 NM NE), Noshiro (23.4 NM SSE), Kodomari, Aomori (38.2 NM NNE), Odomari (38.4 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Iwasaki Kō Lighthouse still active and maintained?+
Yes, Iwasaki 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.
What shipping routes pass near Iwasaki Kō Lighthouse?+
Iwasaki Kō Lighthouse is located within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Iwasaki Kō Lighthouse?+
You can track vessels near Iwasaki 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.