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Ichino Shima Lighthouse

Iso W 6s🇯🇵Honshu-East Coast, JPOperational

Location & Light Range

About Ichino Shima Lighthouse

Ichino Shima is an operational lighthouse situated on Honshu's East Coast. The tower, painted white, reaches a height of 16 meters, matching its focal height. It emits a white light with an isophase characteristic. This consistent illumination pattern aids mariners navigating the area. The structure itself is a straightforward design, typical of many coastal aids.

Why it matters: This lighthouse provides a geographic range of 13 nautical miles.

Light & Optic

Characteristic Signature
Iso W 6s
Flash Type
Isophase
Light Color
White
Flash Count
1 flash
Interval
6s
Raw Code
Iso
Focal Height
16m
Light Range
5NM (9.3 km)
Geographic Range
13NM

Location

City
Honshu-East Coast
Country
🇯🇵JP
Latitude
35.7477°
Longitude
140.8566°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
16m
Tower Color
white

References & Identifiers

Admiralty No.
M6482
NGA No.
4752
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Frequently Asked Questions

How far offshore can Ichino Shima Lighthouse be seen?+
With a focal height of 16 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Ichino Shima is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Ichino Shima Lighthouse at night?+
Ichino Shima 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 Ichino Shima Lighthouse guide vessels into?+
Ichino Shima Lighthouse assists vessels approaching 5 nearby ports. The closest is Choshi at 0.6 NM to the WSW. Other ports served include Naarai (0.9 NM SSW), Takada (0.9 NM SSW), Kashima, Ibaraki (12.9 NM NW), Futtsu, Chiba (25.1 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ichino Shima Lighthouse still active and maintained?+
Yes, Ichino 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 Ichino Shima Lighthouse?+
Ichino 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 Ichino Shima Lighthouse?+
You can track vessels near Ichino 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.