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Oe Ko Lighthouse

Iso W 6s🇯🇵Kyushu-West Coast, JPOperational

Location & Light Range

About Oe Ko Lighthouse

Oe Ko is a white square concrete tower situated on the Kyushu-West Coast. Reaching a height of 23 meters, its structure supports a light positioned 83 meters above sea level. The lighthouse emits an isophase white light, completing a full cycle every 6 seconds. Its geographic range extends to 8 nautical miles.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso.W. period 6s
Focal Height
83m
Light Range
8NM (14.8 km)
Geographic Range
8NM

Location

City
Kyushu-West Coast
Country
🇯🇵JP
Latitude
32.3180°
Longitude
129.9881°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
23m
Tower Shape
square
Tower Color
white
Material
concrete

Structure: White square concrete tower; 23

References & Identifiers

Admiralty No.
M5144
NGA No.
11424
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Frequently Asked Questions

How far offshore can Oe Ko Lighthouse be seen?+
With a focal height of 83 meters and a nominal range of 8 nautical miles (approximately 14.8 km), Oe Ko is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Oe Ko Lighthouse at night?+
Oe Ko displays the characteristic Iso W 6s — 1 white flash every 6 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.
Which ports and harbors does Oe Ko Lighthouse guide vessels into?+
Oe Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Sakitsu at 2 NM to the E. Other ports served include Takahama/Amakusa (3.7 NM N), Oniki (4.9 NM SSE), Fukami (6.8 NM SE), Ushibuka (7.6 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Oe Ko Lighthouse still active and maintained?+
Yes, Oe Ko 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 Oe Ko Lighthouse?+
Oe Ko 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 Oe Ko Lighthouse?+
You can track vessels near Oe Ko 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.