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Kosei Shima Lighthouse

Fl W 3s🇯🇵Eastern Shikoku, JPOperational

Location & Light Range

About Kosei Shima Lighthouse

Kosei Shima Lighthouse is a maritime navigation aid located in Eastern Shikoku, JP. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 27 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Fl W 3s. This means the light produces 1 flash every 3 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: Kosei Shima Lighthouse is positioned at 34.3737°N, 133.8515°E, near Eastern Shikoku in JP.

Geographic context: Kosei 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

Sakaide

JPSKD

2.2 NMS

Utazu

JPUTZ

2.4 NMS

Shimotsui

JPSTI

4.7 NMNW

Shibukawa

JPSKB

5.5 NMNNE

Aoki

JPAOI

5.6 NMSW

Flash Characteristics

Characteristic Signature
Fl W 3s
Flash Type
Flashing
Light Color
White
Flash Count
1 flash
Interval
3s

Physical Specifications

Focal Height
27m
Light Range
Not available
Status
ACTIVE
City
Eastern Shikoku
Country
🇯🇵JP
Latitude
34.3737°
Longitude
133.8515°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Kosei Shima Lighthouse at night?+
Kosei Shima displays the characteristic Fl W 3s — 1 white flash every 3 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 Kosei Shima Lighthouse guide vessels into?+
Kosei Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Sakaide at 2.2 NM to the S. Other ports served include Utazu (2.4 NM S), Shimotsui (4.7 NM NW), Shibukawa (5.5 NM NNE), Aoki (5.6 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kosei Shima Lighthouse still active and maintained?+
Yes, Kosei 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 Kosei Shima Lighthouse?+
Kosei 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 Kosei Shima Lighthouse?+
You can track vessels near Kosei 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.