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Ikeshima Lighthouse

Iso W 6s🇯🇵Shikoku-South coast, JPOperational

Location & Light Range

About Ikeshima Lighthouse

This lighthouse features a white, round concrete tower that reaches 28 meters in height. The light itself is positioned at a focal height of 59 meters above sea level. It emits an isophase white light, which completes its cycle every 6 seconds. This light has a geographic range extending to 8 nautical miles.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso.W. period 6s
Focal Height
59m
Light Range
8NM (14.8 km)
Geographic Range
8NM

Location

City
Shikoku-South coast
Country
🇯🇵JP
Latitude
32.9143°
Longitude
132.6889°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
28m
Tower Shape
round
Tower Color
white
Material
concrete

Structure: White round concrete tower; 28

References & Identifiers

Admiralty No.
M5610.5
NGA No.
10512
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Frequently Asked Questions

How far offshore can Ikeshima Lighthouse be seen?+
With a focal height of 59 meters and a nominal range of 8 nautical miles (approximately 14.8 km), Ikeshima 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 Ikeshima Lighthouse at night?+
Ikeshima displays the characteristic Iso W 6s — 1 white flash every 6 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 Ikeshima Lighthouse guide vessels into?+
Ikeshima Lighthouse assists vessels approaching 5 nearby ports. The closest is Ikeshima at 0.4 NM to the N. Other ports served include Sukumowan (1.4 NM E), Ozuku (2.3 NM SE), Kozukushi (2.4 NM SE), Fukaura, Ehime (4.9 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ikeshima Lighthouse still active and maintained?+
Yes, Ikeshima 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 Ikeshima Lighthouse?+
Ikeshima 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 Ikeshima Lighthouse?+
You can track vessels near Ikeshima 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.