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

Iwa Shima Lighthouse

Fl (3) W 12s🇯🇵Yamaguchi, JPOperational

Location & Light Range

About Iwa Shima Lighthouse

Iwa Shima Lighthouse is a maritime navigation aid located in Yamaguchi, JP. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 23 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Fl (3) W 12s. This means the light produces 3 flashes every 12 seconds. Mariners use this distinctive pattern to positively identify the light and distinguish it from other aids to navigation in the area. The light displays a white signal, the most common color for major coastal lights.

Position: Iwa Shima Lighthouse is positioned at 33.9837°N, 131.7526°E, near Yamaguchi in JP.

Geographic context: Iwa Shima Lighthouse is situated on the Sea of Japan, within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. The location falls within the subtropical climate zone with mild winters and warm summers.

Nearby lighthouses in JP: Other lighthouses in the region include Abashiri East Breakwater, Abashiri Island Breakwater North End, Abashiri North Breakwater, Abashiri South Breakwater East End, Abuka Kō. View all on the Lighthouses Directory.

Nearby Ports

Tonda

JPTND

3 NMN

Tokuyamakudamatsu

JPTXD

4 NMNNE

Tokuyama

JPTKY

4.4 NMNE

Kudamatsu

JPKUD

4.9 NMENE

Tajiri

JPTAJ

8.2 NMWNW

Flash Characteristics

Characteristic Signature
Fl (3) W 12s
Flash Type
Flashing
Light Color
White
Flash Count
3 flashes
Interval
12s

Physical Specifications

Focal Height
23m
Light Range
Not available
Status
ACTIVE
City
Yamaguchi
Country
🇯🇵JP
Latitude
33.9837°
Longitude
131.7526°

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Iwa Shima Lighthouse on the live nautical map

Plan voyages near JP, see nearby vessels in real time, and explore 7,000+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Iwa Shima Lighthouse at night?+
Iwa Shima displays the characteristic Fl (3) W 12s — 3 white flashes every 12 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 Iwa Shima Lighthouse guide vessels into?+
Iwa Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Tonda at 3 NM to the N. Other ports served include Tokuyamakudamatsu (4 NM NNE), Tokuyama (4.4 NM NE), Kudamatsu (4.9 NM ENE), Tajiri (8.2 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Iwa Shima Lighthouse still active and maintained?+
Yes, Iwa Shima 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 Iwa Shima Lighthouse?+
Iwa Shima 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 Iwa Shima Lighthouse?+
You can track vessels near Iwa Shima 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.