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Aoshima Kō East Breakwater Lighthouse

F (2) Green 10s🇯🇵Miyazaki, JPOperational

Location & Light Range

About Aoshima Kō East Breakwater Lighthouse

Constructed in 1964, this 8.5-meter cylindrical concrete post, painted white, is situated at the extremity of the primary eastern breakwater for Aoshima harbor. A single-story concrete building houses equipment. The light features a green emission, flashing twice in a 10-second cycle (F.Fl(2) G 10s), positioned at a focal height of 13 meters. Its visibility extends to 11.3 nautical miles, serving as a reference point for the harbor situated near Ao Shima in Miyazaki Prefecture. Visitors may access the grounds, but the structure is not open for entry.

Why it matters: This light clearly indicates the eastern entry point to the harbor near Ao Shima, functioning as a navigation aid for all craft entering the vicinity.

Light & Optic

Characteristic Signature
F (2) Green 10s
Flash Type
Fixed
Light Color
Green
Flash Count
2 flashes
Interval
10s
Raw Code
F.Fl(2) G 10s
Focal Height
13m
Geographic Range
11.3NM

Construction & History

Year Built
1964

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 8.5m cylindrical concrete post attached to a 1-story concrete equipment room, painted white.

Location

City
Miyazaki
Country
🇯🇵Japan
Region
Miyazaki Prefecture
Sea Region
at the end of the main breakwater of a harbor just south of Ao Shima
Latitude
31.7969°
Longitude
131.4752°

References & Identifiers

Nearest Port
Aoshima(0.1 km)
Admiralty No.
M4888
NGA No.
10772
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Frequently Asked Questions

How do mariners identify Aoshima Kō East Breakwater Lighthouse at night?+
Aoshima Kō East Breakwater displays the characteristic F (2) Green 10s — 2 green flashes every 10 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Aoshima Kō East Breakwater Lighthouse guide vessels into?+
Aoshima Kō East Breakwater Lighthouse assists vessels approaching 5 nearby ports. The closest is Aoshima at 0.1 NM to the NNW. Other ports served include Uchiumi (2.5 NM S), Miyazaki, Miyazaki (6.9 NM N), Aburatsu (13.7 NM SSW), Meitsu (15.9 NM SSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Aoshima Kō East Breakwater Lighthouse still active and maintained?+
Yes, Aoshima Kō East 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.
What shipping routes pass near Aoshima Kō East Breakwater Lighthouse?+
Aoshima Kō East Breakwater 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 Aoshima Kō East Breakwater Lighthouse?+
You can track vessels near Aoshima Kō East 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.