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Tsubota Kō Lighthouse

Fl Green 5s🇯🇵Tokyo, JPOperational

Location & Light Range

About Tsubota Kō Lighthouse

This cylindrical concrete lighthouse, built in 1963, stands 8.5 meters tall on the main breakwater of Tsubota port. Its top flares outward, and it is attached to a small concrete equipment shelter. The lighthouse emits a single green flash every five seconds. With a focal height of 20 meters, it has a geographic range of 13.2 nautical miles. The light marks the entrance to the small port on the island's southeast coast.

Why it matters: This lighthouse is essential for guiding local fishing boats and other small vessels safely into Tsubota port, especially during periods of low visibility or inclement weather.

Light & Optic

Characteristic Signature
Fl Green 5s
Flash Type
Flashing
Light Color
Green
Interval
5s
Raw Code
Fl G 5s
Focal Height
20m
Geographic Range
13.2NM

Construction & History

Year Built
1963

References & Identifiers

Nearest Port
Mikurajima(9.8 km)
Admiralty No.
M6276.4
NGA No.
4932

Tower & Structure

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

Structure: round concrete tower with a flared top, attached to a small concrete equipment shelter

Location

City
Tokyo
Country
🇯🇵Japan
Region
Miyake Subprefecture
Sea Region
main breakwater of Tsubota, a small port on the southeast coast of the island.
Latitude
34.0573°
Longitude
139.5433°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Tsubota Kō Lighthouse at night?+
Tsubota Kō displays the characteristic Fl Green 5s. 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 Tsubota Kō Lighthouse guide vessels into?+
Tsubota Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Toshima/Tokyo at 30.8 NM to the NNW. Other ports served include Nishitokyo (40.6 NM N), Okada (44.7 NM N), Shimoda, Shizuoka (46.8 NM NW), Inatori (49.6 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tsubota Kō Lighthouse still active and maintained?+
Yes, Tsubota 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 Tsubota Kō Lighthouse?+
Tsubota 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 Tsubota Kō Lighthouse?+
You can track vessels near Tsubota 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.