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Kōgo Saki Lighthouse

Fl White 6s🇯🇵Sasebo, JPOperational

Location & Light Range

About Kōgo Saki Lighthouse

Also known as: Kōgo Saki (Sasebo Bay)

This concrete lighthouse stands 15 meters tall on a promontory that defines the northern edge of Sasebo Bay's entrance. The octagonal cylindrical tower, painted white, is topped with a lantern and gallery and attached to a single-story equipment building. Its light, visible for over 20 nautical miles, emits a white flash every six seconds. The facility is operational and maintained in Nagasaki Prefecture. Kōgo Saki is located about 10 kilometers southwest of the city of Sasebo, with the port of Omodaka situated 1.7 kilometers away.

Why it matters: The lighthouse marks the north side of the entrance to Sasebo Bay, guiding vessels into this significant harbor and ensuring safe passage.

Light & Optic

Characteristic Signature
Fl White 6s
Flash Type
Flashing
Light Color
White
Interval
6s
Raw Code
Fl W 6s
Focal Height
64m
Geographic Range
20.6NM

Construction & History

Significant events: Japan Sea Cadets visit 2021

References & Identifiers

Nearest Port
Omodaka(1.7 km)
Admiralty No.
M5232
NGA No.
11920
ARLHS No.
JPN-271

Tower & Structure

Tower Height
15m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: octagonal cylindrical concrete tower with lantern and gallery, attached to a 1-story concrete equipment building

Location

City
Sasebo
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
Promontory marking the north side of the entrance to Sasebo Bay, about 10 km southwest of the city.
Latitude
33.1024°
Longitude
129.6662°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Kōgo Saki Lighthouse at night?+
Kōgo Saki displays the characteristic Fl White 6s. 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 Kōgo Saki Lighthouse guide vessels into?+
Kōgo Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Omodaka at 1.7 NM to the S. Other ports served include Sasebo (4 NM NE), Ôshima, Nagasaki (4.5 NM SSW), Haiki (4.6 NM NNE), Saza (4.6 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Kōgo Saki Lighthouse still active and maintained?+
Yes, Kōgo 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 Kōgo Saki Lighthouse?+
Kōgo 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 Kōgo Saki Lighthouse?+
You can track vessels near Kōgo 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.