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Namari Ko Lighthouse

Fl G 6s🇯🇵Seto Naikai Eastern, JPOperational

Location & Light Range

About Namari Ko Lighthouse

The Namari Ko light is situated on a truncated pyramidal base supporting a post structure. This light stands 7 meters tall, with its focal plane 13 meters above the water. It emits a single green flash every 6 seconds. This navigational aid has a geographic range of 2 nautical miles. The structure is privately maintained and is currently temporarily extinguished.

Light & Optic

Characteristic Signature
Fl G 6s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
6s
Raw Code
Fl.G. period 6s
Focal Height
13m
Light Range
5NM (9.3 km)
Geographic Range
2NM

Location

City
Seto Naikai Eastern
Country
🇯🇵JP
Latitude
34.2504°
Longitude
133.5760°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
7m
Tower Shape
pyramidal

Structure: Post, truncated pyramidal base; 7. Private. Temporarily extinguished

References & Identifiers

Admiralty No.
M5498
NGA No.
8592
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Frequently Asked Questions

How far offshore can Namari Ko Lighthouse be seen?+
With a focal height of 13 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Namari Ko 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 Namari Ko Lighthouse at night?+
Namari Ko displays the characteristic Fl G 6s — 1 green 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. The green color may indicate a specific sector or warning zone.
Which ports and harbors does Namari Ko Lighthouse guide vessels into?+
Namari Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Ohama, Ehime at 1.8 NM to the SE. Other ports served include Awashima (3.1 NM ENE), Nio (4.3 NM SE), Takuma (4.8 NM ESE), Sanagi (5.7 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Namari Ko Lighthouse still active and maintained?+
Yes, Namari Ko 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 Namari Ko Lighthouse?+
Namari Ko 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 Namari Ko Lighthouse?+
You can track vessels near Namari Ko 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.