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Oki Ko Lighthouse

F WRG 14.5s🇯🇵Nanpo-Shoto, JPOperational

Location & Light Range

About Oki Ko Lighthouse

This lighthouse stands on a 7-meter column described as a red casbah with green banding. Its focal height reaches 40 meters above sea level. The light emits a single white flash. It has a geographic range of 1 nautical mile.

Light & Optic

Characteristic Signature
F WRG 14.5s
Flash Type
Fixed
Light Color
WRG
Flash Count
1 flash
Interval
14.5s
Raw Code
F.W.
Focal Height
40m
Light Range
13NM (24.1 km)
Geographic Range
1NM

Location

City
Nanpo-Shoto
Country
🇯🇵JP
Latitude
26.6342°
Longitude
142.1615°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
7m
Tower Color
red and green

Structure: Red casbah column, green banded; 7

References & Identifiers

Admiralty No.
M8350
NGA No.
4972
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Frequently Asked Questions

How far offshore can Oki Ko Lighthouse be seen?+
With a focal height of 40 meters and a nominal range of 13 nautical miles (approximately 24.1 km), Oki 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 Oki Ko Lighthouse at night?+
Oki Ko displays the characteristic F WRG 14.5s — 1 wrg flash every 14.5 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 wrg color may indicate a specific sector or warning zone.
Is Oki Ko Lighthouse still active and maintained?+
Yes, Oki 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.
How can I track vessels near Oki Ko Lighthouse?+
You can track vessels near Oki 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.