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Ai Shima Lighthouse

Occ W 4s🇯🇵Ehime (Western Shikoku), JPOperational

Location & Light Range

About Ai Shima Lighthouse

Ai Shima Lighthouse is a maritime navigation aid located in Ehime (Western Shikoku), JP. It is currently operational and active, providing guidance to vessels navigating the surrounding waters. The light sits at a focal height of 65 meters above mean sea level.

Light characteristic: The identifying signal of this lighthouse is Occ W 4s. This means the light produces 1 flash every 4 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: Ai Shima Lighthouse is positioned at 34.0709°N, 132.7109°E, near Ehime (Western Shikoku) in JP.

Geographic context: Ai 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

Hojo

JPHJO

6.2 NMSSE

Kikuma

JPKIK

6.6 NMESE

Osako

JPOJO

7.3 NMWNW

Kamagari

JPKGR

7.7 NMN

Tainouchi

JPTAL

8.7 NMWNW

Flash Characteristics

Characteristic Signature
Occ W 4s
Flash Type
Occ
Light Color
White
Flash Count
1 flash
Interval
4s

Physical Specifications

Focal Height
65m
Light Range
Not available
Status
ACTIVE
City
Ehime (Western Shikoku)
Country
🇯🇵JP
Latitude
34.0709°
Longitude
132.7109°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Ai Shima Lighthouse at night?+
Ai Shima displays the characteristic Occ 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 Ai Shima Lighthouse guide vessels into?+
Ai Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Hojo at 6.2 NM to the SSE. Other ports served include Kikuma (6.6 NM ESE), Osako (7.3 NM WNW), Kamagari (7.7 NM N), Tainouchi (8.7 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ai Shima Lighthouse still active and maintained?+
Yes, Ai 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 Ai Shima Lighthouse?+
Ai 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 Ai Shima Lighthouse?+
You can track vessels near Ai 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.