Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Futami Ko Lighthouse

Fl W 4s🇯🇵Nanpo-Shoto, JPOperational

Location & Light Range

About Futami Ko Lighthouse

This square white tower stands 33 meters tall, with its light positioned 70 meters above sea level. The light emits a single white flash every 4 seconds, providing a geographic range of 12 nautical miles. The lighthouse is located in Nanpo-Shoto, Japan, at coordinates 142.2102, 27.07281. It is currently operational.

Light & Optic

Characteristic Signature
Fl W 4s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
4s
Raw Code
Fl.W. period 4s
Focal Height
70m
Light Range
12NM (22.2 km)
Geographic Range
12NM

Location

City
Nanpo-Shoto
Country
🇯🇵JP
Latitude
27.0728°
Longitude
142.2102°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
33m
Tower Shape
square
Tower Color
white

Structure: White tower; 33

References & Identifiers

Admiralty No.
M8346
NGA No.
4964
Live tracking · 50,000+ mariners

Find Futami Ko Lighthouse on the live nautical map

Plan voyages near JP, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How far offshore can Futami Ko Lighthouse be seen?+
With a focal height of 70 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Futami 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 Futami Ko Lighthouse at night?+
Futami Ko displays the characteristic Fl W 4s — 1 white flash every 4 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.
Is Futami Ko Lighthouse still active and maintained?+
Yes, Futami 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 Futami Ko Lighthouse?+
You can track vessels near Futami 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.