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

Yoronshima Lighthouse

Fl W 4s🇯🇵Nansei Shoto, JPOperational

Location & Light Range

About Yoronshima Lighthouse

This lighthouse consists of a red fiberglass tower constructed on piles. It features a topmark and emits a single white flash every 4 seconds. The focal height of the light reaches 23 meters above sea level. The structure is made of glass-reinforced plastic, commonly known as fiberglass. Its location is within the Nansei Shoto region.

Why it matters: The lighthouse provides a geographic range of 12 nautical miles.

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
23m
Light Range
12NM (22.2 km)
Geographic Range
12NM

Location

City
Nansei Shoto
Country
🇯🇵JP
Latitude
27.0251°
Longitude
128.4553°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Color
red
Material
fiberglass

Structure: STARBOARD (IALA B) Red glass reinforced plastic(grp) fiberglass tower, topmark, on pile

References & Identifiers

Admiralty No.
M4763.8
NGA No.
13244
Live tracking · 50,000+ mariners

Find Yoronshima 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 Yoronshima Lighthouse be seen?+
With a focal height of 23 meters and a nominal range of 12 nautical miles (approximately 22.2 km), Yoronshima 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 Yoronshima Lighthouse at night?+
Yoronshima 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 Yoronshima Lighthouse guide vessels into?+
Yoronshima Lighthouse assists vessels approaching 5 nearby ports. The closest is China at 19.3 NM to the NNE. Other ports served include Wadomari (24.9 NM NNE), Inobe (25.5 NM NNE), Kada (27.5 NM WSW), Nakada (27.6 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Yoronshima Lighthouse still active and maintained?+
Yes, Yoronshima 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 Yoronshima Lighthouse?+
You can track vessels near Yoronshima 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.