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Yamausu Kō Lighthouse

F Green 6s🇯🇵Esashi, JPOperational

Location & Light Range

About Yamausu Kō Lighthouse

This white, round cylindrical concrete tower measures 9.5 meters in height. Its light source is situated 12 meters above sea level. The lighthouse is at the end of the south breakwater for Yamausu, a fishing port located approximately 19.1 kilometers from Omu and southeast of Esashi. The lamp emits a green light with a characteristic of F.Fl G 6s, offering a range of 11 nautical miles. The tower is topped with a lantern and gallery. Public access is permitted to the grounds, but the tower interior is not open.

Why it matters: This navigation aid is important for local fishing vessels approaching and departing their home port, especially in periods of reduced visibility or darkness. It marks the extremity of the south breakwater, helping to avoid groundings and ensure safe passage into the harbor.

Light & Optic

Characteristic Signature
F Green 6s
Flash Type
Fixed
Light Color
Green
Interval
6s
Raw Code
F.Fl G 6s
Focal Height
12m
Geographic Range
11NM

Location

City
Esashi
Country
🇯🇵Japan
Region
Hokkaido Prefecture
Sea Region
Located at the end of the south breakwater of Yamausu, a small fishing port about 15 km southeast of Eshashi.
Latitude
44.8313°
Longitude
142.6792°

References & Identifiers

Nearest Port
Omu(19.1 km)
Admiralty No.
M6893.7
NGA No.
0224
ARLHS No.
JPN-1017

Tower & Structure

Tower Height
9.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery

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 Yamausu Kō Lighthouse at night?+
Yamausu Kō displays the characteristic F Green 6s. 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 Yamausu Kō Lighthouse guide vessels into?+
Yamausu Kō Lighthouse assists vessels approaching 4 nearby ports. The closest is Hamasarufutsu at 32.4 NM to the NW. Other ports served include Nishibe (37.6 NM NW), Onishi (37.6 NM NW), Teshio (40 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yamausu Kō Lighthouse still active and maintained?+
Yes, Yamausu 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 Yamausu Kō Lighthouse?+
You can track vessels near Yamausu 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.