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Sawaki Kō Breakwater Lighthouse

Fl Green 4s🇯🇵Oumu, JPOperational

A round, cylindrical concrete tower painted white, this lighthouse was established in 1966 at the north end of Sawaki's main breakwater. Standing 10 meters tall with its light at 12 meters above sea level, it emits a green flash every 4 seconds. The structure offers a geographic range of 11 nautical miles. It is located about 8 kilometers southeast of Ōmu on Hokkaido Prefecture. The lighthouse guides vessels navigating into and out of the port of Sawaki.

Why it matters: This lighthouse is essential for marking the breakwater's northern limit, ensuring safe entry and exit for vessels utilizing Sawaki's port and supporting the local fishing fleet.

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
12m
Geographic Range
11NM
Year Built
1966
Nearest Port
Omu(5.5 km)
Admiralty No.
M6890
NGA No.
244
ARLHS No.
JPN-964
Tower Height
10m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery, painted white

City
Oumu
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Located on the north end of the main breakwater of Sawaki, about 8 km (5 mi) southeast of Ōmu.
Latitude
44.5243°
Longitude
143.0607°
Flag
Type
Name
Dist.
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How do mariners identify Sawaki Kō Breakwater Lighthouse at night?+
Sawaki Kō Breakwater displays the characteristic Fl Green 4s. 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.
Is Sawaki Kō Breakwater Lighthouse still active and maintained?+
Yes, Sawaki Kō Breakwater 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 Sawaki Kō Breakwater Lighthouse?+
You can track vessels near Sawaki Kō Breakwater 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.