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Nenasi Syo Lighthouse

Fl (2) W 5s🇯🇵Ehime (Western Shikoku), JPOperational

Location & Light Range

About Nenasi Syo Lighthouse

This grey post lighthouse stands 17 meters above sea level. The structure is located in Ehime Prefecture on the western side of Shikoku Island. Its light exhibits two white flashes, repeating every 5 seconds. The geographic range of this light is 5 nautical miles.

Light & Optic

Characteristic Signature
Fl (2) W 5s
Flash Type
Flashing
Light Color
White
Flash Count
2 flashes
Interval
5s
Raw Code
Fl.(2)W. period 5s
Focal Height
17m
Geographic Range
5NM

Location

City
Ehime (Western Shikoku)
Country
🇯🇵JP
Latitude
33.9462°
Longitude
132.4977°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Color
grey

Structure: Grey post

References & Identifiers

Admiralty No.
M5646
NGA No.
9188
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Frequently Asked Questions

How do mariners identify Nenasi Syo Lighthouse at night?+
Nenasi Syo displays the characteristic Fl (2) W 5s — 2 white flashes every 5 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 Nenasi Syo Lighthouse guide vessels into?+
Nenasi Syo Lighthouse assists vessels approaching 5 nearby ports. The closest is Ihota at 3 NM to the W. Other ports served include Tainouchi (10.5 NM NNE), Osako (10.7 NM NNE), Matsuyama (11.5 NM ESE), Masaki (11.6 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Nenasi Syo Lighthouse still active and maintained?+
Yes, Nenasi Syo 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 Nenasi Syo Lighthouse?+
Nenasi Syo 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 Nenasi Syo Lighthouse?+
You can track vessels near Nenasi Syo 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.