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Nemuro Kō North Breakwater Lighthouse

F Green 3s🇯🇵Nemuro, JPOperational

Location & Light Range

About Nemuro Kō North Breakwater Lighthouse

A cylindrical concrete tower, 14 meters high, was built and first lit in 1945 at the end of the north breakwater marking the north entrance to Nemuro harbor. Painted white, the structure features a lantern and gallery. Its light is green, exhibiting a single flash every 3 seconds. The lighthouse is located 0.4 kilometers from the nearest port, Nemuro, in Hokkaido Prefecture. The site is accessible to the public, though the tower itself is closed.

Why it matters: This lighthouse is critical for guiding fishing vessels and other maritime traffic safely into Nemuro Harbor, a significant port on Hokkaido's eastern coast. Its position on the north breakwater delineates the safe channel entrance.

Light & Optic

Characteristic Signature
F Green 3s
Flash Type
Fixed
Light Color
Green
Interval
3s
Raw Code
F.Fl G 3s
Focal Height
14m
Geographic Range
11.6NM

Construction & History

Year Built
1945

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
14m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

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

Location

City
Nemuro
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Located at the end of the short north breakwater at the north entrance to Nemuro harbor.
Latitude
43.3480°
Longitude
145.5788°

References & Identifiers

Nearest Port
Nemuro(0.4 km)
Admiralty No.
M6850
NGA No.
0436
ARLHS No.
JPN-924
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Frequently Asked Questions

How do mariners identify Nemuro Kō North Breakwater Lighthouse at night?+
Nemuro Kō North Breakwater 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 Nemuro Kō North Breakwater Lighthouse guide vessels into?+
Nemuro Kō North Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Nemuro at 0.9 NM to the SSE. Other ports served include Nasa (3.9 NM S), Hanasaki (4 NM S), Kiritappu (25.4 NM SW), Shibetsu (27 NM NW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Nemuro Kō North Breakwater Lighthouse still active and maintained?+
Yes, Nemuro Kō North 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 Nemuro Kō North Breakwater Lighthouse?+
You can track vessels near Nemuro Kō North 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.