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Kametoku Ko Lighthouse

Fl G 4s🇯🇵Nansei Shoto, JPOperational

This white, round concrete tower stands 46 meters tall. It is situated in Nansei Shoto and emits a green light. The light flashes once every 4 seconds. The focal height of the light is 18 meters above sea level.

Characteristic Signature
Fl G 4s
Flash Type
Flashing
Light Color
Green
Flash Count
1 flash
Interval
4s
Raw Code
Fl.G. period 4s
Focal Height
18m
Light Range
5NM (9.3 km)
Geographic Range
5NM
City
Nansei Shoto
Country
🇯🇵JP
Latitude
27.7389°
Longitude
129.0276°
Flag
Type
Name
Dist.
Tower Height
46m
Tower Shape
round
Tower Color
white
Material
concrete

Structure: White round concrete tower; 46

Admiralty No.
M4766.7
NGA No.
13200
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How far offshore can Kametoku Ko Lighthouse be seen?+
With a focal height of 18 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Kametoku 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 Kametoku Ko Lighthouse at night?+
Kametoku Ko displays the characteristic Fl G 4s — 1 green flash every 4 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 Kametoku Ko Lighthouse guide vessels into?+
Kametoku Ko Lighthouse assists vessels approaching 5 nearby ports. The closest is Kametoku at 0 NM to the WSW. Other ports served include Boma (4.7 NM NNW), Omonawa (5.3 NM SW), Shikaura (6.5 NM WSW), Hetono (8.5 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kametoku Ko Lighthouse still active and maintained?+
Yes, Kametoku 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.
How can I track vessels near Kametoku Ko Lighthouse?+
You can track vessels near Kametoku 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.