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Nakakoshiki Kō Lighthouse

Fl Green 4s🇯🇵Satsumasendai, JPOperational

Location & Light Range

About Nakakoshiki Kō Lighthouse

Also known as: #Nakakoshiki Kō

Situated at the extremity of the primary breakwater for Kami-Koshikijima's main port, this marker began operation in 2016. The present tower, colored red and topped with a lantern, measures 10 meters in focal height. Its light pattern is a single green flash occurring every four seconds (Fl G 4s). This installation succeeded a former, smaller marker that had served as the harbor's entrance guide. The location is open for visits, but access to the tower is restricted.

Why it matters: This marker precisely indicates the termination of the main breakwater, offering navigation for ships approaching Nakakoshiki harbor.

Light & Optic

Characteristic Signature
Fl Green 4s
Flash Type
Flashing
Light Color
Green
Interval
4s
Raw Code
Fl G 4s
Focal Height
10m
Geographic Range
10.4NM

Construction & History

First Lit
2016

Significant events: Replaced in 2016, Original lighthouse removed

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Shape
lantern
Tower Color
red

Structure: A light on a post with a focal plane of 10 meters.

Location

City
Satsumasendai
Country
🇯🇵Japan
Region
Kagoshima Prefecture
Sea Region
Located at the end of the main breakwater at Nakakoshiki, the principal harbor of Kami-Koshikijima.
Latitude
31.8339°
Longitude
129.8641°

References & Identifiers

Nearest Port
Eishi(0.9 km)
Admiralty No.
M4996
NGA No.
11104
USCG No.
JCG-6583
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Frequently Asked Questions

How do mariners identify Nakakoshiki Kō Lighthouse at night?+
Nakakoshiki Kō displays the characteristic Fl Green 4s. 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 Nakakoshiki Kō Lighthouse guide vessels into?+
Nakakoshiki Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Nakakoshiki at 0.2 NM to the NW. Other ports served include Higashisonogi-Gun Cho (12.3 NM NNE), Teuchi (14.5 NM SW), Satsumasendai (17 NM E), Hashima (18.1 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Nakakoshiki Kō Lighthouse still active and maintained?+
Yes, Nakakoshiki Kō 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 Nakakoshiki Kō Lighthouse?+
Nakakoshiki Kō 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 Nakakoshiki Kō Lighthouse?+
You can track vessels near Nakakoshiki Kō 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.