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

Ieshima Lighthouse

Fl W 4s🇯🇵Nansei Shoto, JPOperational

Location & Light Range

About Ieshima Lighthouse

Located in the Nansei Shoto region, this lighthouse features a green, round metal tower situated on a pile. The structure rises to a focal height of 31 meters. It emits a single white flash every 4 seconds. The lighthouse's operational status ensures its light is available for maritime navigation. The tower is topped with a recognizable topmark.

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
31m
Light Range
7NM (13.0 km)
Geographic Range
7NM

Location

City
Nansei Shoto
Country
🇯🇵JP
Latitude
26.7259°
Longitude
127.7505°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Shape
round
Tower Color
green
Material
metal

Structure: PORT (IALA B) Green metal tower, topmark, on pile

References & Identifiers

Admiralty No.
M4763.6
NGA No.
13448
Live tracking · 50,000+ mariners

Find Ieshima 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 Ieshima Lighthouse be seen?+
With a focal height of 31 meters and a nominal range of 7 nautical miles (approximately 13.0 km), Ieshima is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Ieshima Lighthouse at night?+
Ieshima 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.
Which ports and harbors does Ieshima Lighthouse guide vessels into?+
Ieshima Lighthouse assists vessels approaching 5 nearby ports. The closest is Motobu at 8.7 NM to the SE. Other ports served include Sesoko (9 NM SE), Unten (14 NM ESE), Nago (14.4 NM SE), Kouri (14.5 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ieshima Lighthouse still active and maintained?+
Yes, Ieshima 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 Ieshima Lighthouse?+
You can track vessels near Ieshima 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.