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Kusuva Saki Lighthouse

Fl White 4s🇯🇵Tsukumi, JPOperational

Location & Light Range

About Kusuva Saki Lighthouse

Also known as: Kusuva Saki (Tomariganti)

This white, cylindrical lighthouse stands 10 meters tall, with its light positioned 73 meters above sea level. It emits a single white flash every 4 seconds, visible for 21.8 nautical miles. The structure marks the end of a long promontory in the Bungo Strait, located between the towns of Usuki and Tsukumi. While the lighthouse site is accessible, the tower itself is closed to the public. The nearest port, Nagame, is 2 kilometers away.

Why it matters: The lighthouse serves as a critical warning for vessels navigating the Bungo Strait, indicating the promontory it occupies and aiding safe passage through this significant waterway.

Light & Optic

Characteristic Signature
Fl White 4s
Flash Type
Flashing
Light Color
White
Interval
4s
Raw Code
Fl W 4s
Focal Height
73m
Geographic Range
21.8NM

Location

City
Tsukumi
Country
🇯🇵Japan
Region
Oita Prefecture
Sea Region
Bungo Strait, marking a long promontory between Usuki and Tsukumi.
Latitude
33.1244°
Longitude
131.9144°

References & Identifiers

Nearest Port
Nagame(2.0 km)
ARLHS No.
JPN-2338

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
white

Structure: round cylindrical tower

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 Kusuva Saki Lighthouse at night?+
Kusuva Saki displays the characteristic Fl White 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 white color may indicate a specific sector or warning zone.
Which ports and harbors does Kusuva Saki Lighthouse guide vessels into?+
Kusuva Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Tsukumi at 3.4 NM to the SW. Other ports served include Usuki (5.2 NM W), Saganoseki (7.6 NM NNW), Saiki (8.7 NM S), Urashiro (9.5 NM S). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kusuva Saki Lighthouse still active and maintained?+
Yes, Kusuva Saki 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 Kusuva Saki Lighthouse?+
Kusuva Saki 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 Kusuva Saki Lighthouse?+
You can track vessels near Kusuva Saki 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.