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Tateyama Kō Lighthouse

Oc Green 4s🇯🇵Tateyama, JPOperational

Location & Light Range

About Tateyama Kō Lighthouse

Located at the eastern end of the Tateyama breakwater, this concrete post lighthouse stands 8.5 meters tall. It features a white cylindrical tower with a lantern, attached to a single-story equipment shelter. The focal height of its green light is 11 meters, and it emits a single green flash every 4 seconds. This structure has a geographic range of 10.7 nautical miles. The site is open to visitors, though the tower itself is closed to the public.

Why it matters: This lighthouse warns vessels of the eastern breakwater, guiding ships safely into Tateyama harbor.

Light & Optic

Characteristic Signature
Oc Green 4s
Flash Type
Occulting
Light Color
Green
Interval
4s
Raw Code
Oc G 4s
Focal Height
11m
Geographic Range
10.7NM

Location

City
Tateyama
Country
🇯🇵Japan
Region
Chiba Prefecture
Sea Region
End of the east breakwater of Tateyama.
Latitude
34.9877°
Longitude
139.8480°

References & Identifiers

Nearest Port
Tateyama(0.1 km)
ARLHS No.
JPN-632

Tower & Structure

Tower Height
8.5m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: A 8.5m white concrete post with lantern, attached to a square 1-story concrete equipment shelter.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Tateyama Kō Lighthouse at night?+
Tateyama Kō displays the characteristic Oc 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 Tateyama Kō Lighthouse guide vessels into?+
Tateyama Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Tateyama at 1.1 NM to the N. Other ports served include Muya (2.5 NM WNW), Wada (8.7 NM ENE), Maguchi (12.5 NM NW), Abuto (13.6 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tateyama Kō Lighthouse still active and maintained?+
Yes, Tateyama 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 Tateyama Kō Lighthouse?+
Tateyama 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 Tateyama Kō Lighthouse?+
You can track vessels near Tateyama 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.