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Gō Saki Lighthouse

L White 6s🇯🇵Tsushima, JPOperational

Location & Light Range

About Gō Saki Lighthouse

A cylindrical concrete tower painted white, Gō Saki lighthouse was first lit in 1960. It stands 8.5 meters tall, with its light positioned 27 meters above sea level. The structure consists of the round tower centered on a square, single-story concrete equipment room. This lighthouse emits a long white flash every 6 seconds, visible for 14.7 nautical miles. The site is open to the public, though access to the tower itself is restricted. It is located on a promontory forming the south side of the entrance to Asō Bay.

Why it matters: Gō Saki lighthouse marks the entrance to Asō Bay, guiding vessels navigating these waters.

Light & Optic

Characteristic Signature
L White 6s
Flash Type
L
Light Color
White
Interval
6s
Raw Code
L Fl W 6s
Focal Height
27m
Geographic Range
14.7NM

Construction & History

Year Built
1960

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

Structure: round concrete tower centered on on a square 1-story concrete equipment room

Location

City
Tsushima
Country
🇯🇵Japan
Region
Nagasaki Prefecture
Sea Region
promontory on the south side of the entrance to Asō Bay
Latitude
34.3311°
Longitude
129.2052°

References & Identifiers

Nearest Port
Mizusaki(3.4 km)
ARLHS No.
JPN-070
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Frequently Asked Questions

How do mariners identify Gō Saki Lighthouse at night?+
Gō Saki displays the characteristic L 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 Gō Saki Lighthouse guide vessels into?+
Gō Saki Lighthouse assists vessels approaching 5 nearby ports. The closest is Osaki, Miyagi at 1.5 NM to the SE. Other ports served include Imazato (2.6 NM SSE), Mizusaki (3.4 NM ENE), Hirugaura (3.5 NM E), Takeshiki (5.2 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gō Saki Lighthouse still active and maintained?+
Yes, Gō 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 Gō Saki Lighthouse?+
Gō 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 Gō Saki Lighthouse?+
You can track vessels near Gō 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.