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Namerikawa Ko Lighthouse

Fl (2) G 6s🇯🇵Honshu-Northwest Coast, JPInactive

Location & Light Range

About Namerikawa Ko Lighthouse

This post structure stands on Honshu's Northwest Coast. The tower is white and topped with a lantern. It emits two green flashes every 6 seconds from a focal height of 13 meters. Its geographic range is 5 nautical miles.

Light & Optic

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

Location

City
Honshu-Northwest Coast
Country
🇯🇵JP
Latitude
36.7772°
Longitude
137.3436°

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Shape
lantern
Tower Color
white

Structure: Post

References & Identifiers

Admiralty No.
M7145
NGA No.
3120
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Frequently Asked Questions

How far offshore can Namerikawa Ko Lighthouse be seen?+
With a focal height of 13 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Namerikawa 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 Namerikawa Ko Lighthouse at night?+
Namerikawa Ko displays the characteristic Fl (2) G 6s — 2 green flashes 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 Namerikawa Ko Lighthouse guide vessels into?+
Namerikawa Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Uozu, Toyama at 3.6 NM to the NE. Other ports served include Fushiki (10.1 NM W), Hiki (10.1 NM W), Toyama (10.1 NM W), Toyamashinko (10.9 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Namerikawa Ko Lighthouse still active and maintained?+
Namerikawa Ko Lighthouse is currently listed as inactive. It may have been decommissioned, replaced by a different navigation aid, or temporarily taken out of service. Mariners should check the latest Notices to Mariners for current status.
What shipping routes pass near Namerikawa Ko Lighthouse?+
Namerikawa 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 Namerikawa Ko Lighthouse?+
You can track vessels near Namerikawa 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.